author | Claus Gittinger <cg@exept.de> |
Mon, 03 Nov 1997 16:35:38 +0100 | |
changeset 3095 | cdb753308f6e |
parent 3044 | a0bbac91639b |
child 3117 | b771cbc6c118 |
permissions | -rw-r--r-- |
848
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parents:
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1 |
" |
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2 |
COPYRIGHT (c) 1993 by Claus Gittinger |
76a83f34c26a
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3 |
All Rights Reserved |
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4 |
|
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5 |
This software is furnished under a license and may be used |
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6 |
only in accordance with the terms of that license and with the |
76a83f34c26a
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7 |
inclusion of the above copyright notice. This software may not |
76a83f34c26a
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8 |
be provided or otherwise made available to, or used by, any |
76a83f34c26a
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9 |
other person. No title to or ownership of the software is |
76a83f34c26a
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10 |
hereby transferred. |
76a83f34c26a
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11 |
" |
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12 |
|
3044 | 13 |
'From Smalltalk/X, Version:3.2.1 on 21-oct-1997 at 2:47:16 pm' ! |
2957 | 14 |
|
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15 |
ArrayedCollection subclass:#ExternalBytes |
1220 | 16 |
instanceVariableNames:'address* size' |
17 |
classVariableNames:'AllocatedInstances Lobby DebugMalloc TraceMalloc' |
|
18 |
poolDictionaries:'' |
|
19 |
category:'System-Support' |
|
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20 |
! |
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21 |
|
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22 |
!ExternalBytes primitiveFunctions! |
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23 |
%{ |
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24 |
|
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25 |
struct mallocList { |
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26 |
char *chunk; |
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27 |
unsigned size; |
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28 |
struct mallocList *next; |
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29 |
}; |
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30 |
static struct mallocList *mallocList = (struct mallocList *)0; |
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31 |
static mallocCount = 0; |
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32 |
|
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33 |
char * |
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34 |
__stx_malloc(nBytes) { |
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35 |
char *ptr; |
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36 |
char *malloc(); |
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37 |
struct mallocList *e, *this; |
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38 |
int found; |
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39 |
|
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40 |
ptr = malloc(nBytes); |
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41 |
if (@global(TraceMalloc) == true) { |
2788 | 42 |
#ifdef alpha64 |
2779 | 43 |
printf("EXTBYTES [info]: allocated %d bytes at: %016lx\n", nBytes, ptr); |
44 |
#else |
|
45 |
printf("EXTBYTES [info]: allocated %d bytes at: %08x\n", nBytes, ptr); |
|
46 |
#endif |
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47 |
} |
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48 |
if (@global(DebugMalloc) == true) { |
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49 |
if (ptr) { |
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50 |
found = 0; |
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51 |
for (this=mallocList; this; this=this->next) { |
76a83f34c26a
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52 |
if (this->chunk == ptr) { |
2788 | 53 |
#ifdef alpha64 |
2779 | 54 |
printf("EXTBYTES [warning]: **** %016lx already allocated (freed somewhere else ?)\n", ptr); |
55 |
#else |
|
56 |
printf("EXTBYTES [warning]: **** %08x already allocated (freed somewhere else ?)\n", ptr); |
|
57 |
#endif |
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58 |
found++; |
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59 |
} |
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60 |
} |
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61 |
if (! found) { |
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62 |
e = (struct mallocList *) malloc(sizeof(struct mallocList)); |
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63 |
e->next = mallocList; |
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64 |
e->chunk = ptr; |
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65 |
e->size = nBytes; |
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66 |
mallocList = e; |
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67 |
mallocCount++; |
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68 |
} |
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69 |
} |
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70 |
} |
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71 |
return ptr; |
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72 |
} |
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73 |
|
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74 |
char * |
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75 |
__stx_calloc(n, size) { |
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76 |
char *ptr; |
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77 |
|
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78 |
ptr = __stx_malloc(n * size); |
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79 |
if (ptr != (char *)0) { |
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80 |
bzero(ptr, (n * size)); |
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81 |
} |
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82 |
return ptr; |
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83 |
} |
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84 |
|
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85 |
char * |
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86 |
__stx_realloc(ptr, nBytes) |
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87 |
char *ptr; |
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88 |
{ |
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89 |
char *newPtr; |
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90 |
char *realloc(), *malloc(); |
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91 |
struct mallocList *this, *prev, *next, *e; |
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92 |
int foundOld, foundNew; |
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93 |
|
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94 |
newPtr = realloc(ptr, nBytes); |
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95 |
if (@global(TraceMalloc) == true) { |
2788 | 96 |
#ifdef alpha64 |
2779 | 97 |
printf("EXTBYTES [info]: reallocated %d bytes for %016lx at: %016lx\n", nBytes, ptr, newPtr); |
98 |
#else |
|
99 |
printf("EXTBYTES [info]: reallocated %d bytes for %08x at: %08x\n", nBytes, ptr, newPtr); |
|
100 |
#endif |
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101 |
} |
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102 |
if (@global(DebugMalloc) == true) { |
76a83f34c26a
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103 |
if (newPtr) { |
76a83f34c26a
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104 |
foundNew = 0; |
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105 |
for (this=mallocList; this; this=this->next) { |
76a83f34c26a
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106 |
if (this->chunk == newPtr) { |
2788 | 107 |
#ifdef alpha64 |
2779 | 108 |
printf("EXTBYTES [warning]: **** %016lx already allocated (freed somewhere else ?)\n", newPtr); |
109 |
#else |
|
110 |
printf("EXTBYTES [warning]: **** %08x already allocated (freed somewhere else ?)\n", newPtr); |
|
111 |
#endif |
|
848
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112 |
foundNew = 1; |
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113 |
} |
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114 |
} |
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115 |
} |
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116 |
|
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117 |
if (ptr) { |
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118 |
foundOld = 0; |
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119 |
for (this=mallocList, prev=0; this; this=next) { |
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120 |
next = this->next; |
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121 |
if (this->chunk == ptr) { |
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122 |
if (prev) { |
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123 |
prev->next = next; |
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124 |
} else { |
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125 |
mallocList = next; |
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|
126 |
} |
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127 |
free(this); |
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|
128 |
foundOld++; |
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|
129 |
} else { |
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|
130 |
prev = this; |
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|
131 |
} |
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|
132 |
} |
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|
133 |
if (! foundOld) { |
2788 | 134 |
#ifdef alpha64 |
2779 | 135 |
printf("EXTBYTES [warning]: **** realloc alien %lx (allocated somewhere else ?)\n", ptr); |
136 |
#else |
|
137 |
printf("EXTBYTES [warning]: **** realloc alien %x (allocated somewhere else ?)\n", ptr); |
|
138 |
#endif |
|
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139 |
} |
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|
140 |
} |
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|
141 |
|
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|
142 |
if (! foundNew) { |
913 | 143 |
e = (struct mallocList *) malloc(sizeof(struct mallocList)); |
144 |
e->next = mallocList; |
|
145 |
e->chunk = newPtr; |
|
146 |
e->size = nBytes; |
|
147 |
mallocList = e; |
|
148 |
if (! ptr) { |
|
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|
149 |
mallocCount++; |
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|
150 |
} |
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151 |
} |
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152 |
} |
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|
153 |
|
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154 |
return newPtr; |
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155 |
} |
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|
156 |
|
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157 |
__stx_free(ptr) |
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158 |
char *ptr; |
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159 |
{ |
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160 |
struct mallocList *this, *prev, *next; |
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161 |
int found; |
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|
162 |
|
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|
163 |
if (@global(TraceMalloc) == true) { |
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|
164 |
printf("EXTBYTES: free bytes at: %08x\n", ptr); |
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165 |
} |
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|
166 |
if (@global(DebugMalloc) == true) { |
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167 |
if (ptr) { |
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168 |
found = 0; |
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|
169 |
for (this=mallocList, prev=0; this; this=next) { |
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170 |
next = this->next; |
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171 |
if (this->chunk == ptr) { |
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172 |
if (prev) { |
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173 |
prev->next = next; |
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174 |
} else { |
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175 |
mallocList = next; |
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176 |
} |
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177 |
free(this); |
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178 |
found++; |
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179 |
mallocCount--; |
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180 |
} else { |
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181 |
prev = this; |
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182 |
} |
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183 |
} |
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184 |
if (! found) { |
2788 | 185 |
#ifdef alpha64 |
2779 | 186 |
printf("EXTBYTES [warning]: **** free: alien %lx (allocated somewhere else ?))\n", ptr); |
187 |
#else |
|
188 |
printf("EXTBYTES [warning]: **** free: alien %x (allocated somewhere else ?))\n", ptr); |
|
189 |
#endif |
|
848
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190 |
} |
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191 |
} |
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192 |
} |
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|
193 |
return free(ptr); |
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194 |
} |
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195 |
|
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196 |
%} |
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|
197 |
! ! |
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|
198 |
|
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|
199 |
!ExternalBytes class methodsFor:'documentation'! |
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|
200 |
|
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|
201 |
copyright |
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|
202 |
" |
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|
203 |
COPYRIGHT (c) 1993 by Claus Gittinger |
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|
204 |
All Rights Reserved |
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|
205 |
|
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|
206 |
This software is furnished under a license and may be used |
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|
207 |
only in accordance with the terms of that license and with the |
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|
208 |
inclusion of the above copyright notice. This software may not |
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|
209 |
be provided or otherwise made available to, or used by, any |
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|
210 |
other person. No title to or ownership of the software is |
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|
211 |
hereby transferred. |
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|
212 |
" |
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|
213 |
! |
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changeset
|
214 |
|
76a83f34c26a
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changeset
|
215 |
documentation |
76a83f34c26a
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|
216 |
" |
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|
217 |
This class provides access to any memory in the system. Its main purpose |
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|
218 |
is to provide a baseclass for objects referencing structured external data. |
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|
219 |
Normally, instances are created by primitive code which wants to pass C-data |
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|
220 |
to Smalltalk AND grants smalltalk access to individual bytes afterwards. |
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|
221 |
Primitives which do not want to grant this access should return instances of |
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|
222 |
ExternalAddress. See more info there. Also, have a look at ExternalFunction |
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|
223 |
which is another similar class, but specialized to represent callable C-functions. |
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|
224 |
|
76a83f34c26a
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changeset
|
225 |
Since the memory address of an instance stays fixed (once allocated), |
76a83f34c26a
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|
226 |
it can also be used to share data with external C-parts |
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|
227 |
(which are not prepared for objects to change their address). |
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changeset
|
228 |
|
76a83f34c26a
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changeset
|
229 |
Use with great care - access is not always checked for out-of-bounds |
76a83f34c26a
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|
230 |
or valid addresses. |
76a83f34c26a
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diff
changeset
|
231 |
|
76a83f34c26a
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diff
changeset
|
232 |
Since the data is allocated outside the garbage collected smalltalk space, |
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changeset
|
233 |
its address stays fix. Thus, it can be passed to external C-functions without |
76a83f34c26a
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changeset
|
234 |
any danger. However, you have to take care for freeing the memory yourself. |
76a83f34c26a
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parents:
diff
changeset
|
235 |
|
76a83f34c26a
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parents:
diff
changeset
|
236 |
To help in avoiding memory bugs, instances created with #new: are |
76a83f34c26a
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diff
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|
237 |
registered in a local classvar and deregistered when the underlying memory |
76a83f34c26a
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diff
changeset
|
238 |
is explicitely freed. Since a life reference (from that classvar) exists, |
76a83f34c26a
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parents:
diff
changeset
|
239 |
the garbage collector will never find these to be reclaimable, and the |
76a83f34c26a
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diff
changeset
|
240 |
underlying memory stays allocated (at a fix address) forever. |
76a83f34c26a
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diff
changeset
|
241 |
To release the memory, either #free it or #unprotect it. |
76a83f34c26a
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diff
changeset
|
242 |
The first will immediately release the memory, while the second will delay |
76a83f34c26a
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diff
changeset
|
243 |
freeing until the next garbage collect occurs. |
76a83f34c26a
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parents:
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changeset
|
244 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
diff
changeset
|
245 |
If you need memory which is automatically freed, create |
76a83f34c26a
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parents:
diff
changeset
|
246 |
the instance via #unprotectedNew: right away; the underlying malloced-memory |
76a83f34c26a
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diff
changeset
|
247 |
will be released as soon as no smalltalk reference to the ExtBytes object |
76a83f34c26a
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diff
changeset
|
248 |
exists any more (however, you have to know for sure, that no C-references |
76a83f34c26a
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parents:
diff
changeset
|
249 |
exist to this memory). |
76a83f34c26a
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parents:
diff
changeset
|
250 |
|
76a83f34c26a
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parents:
diff
changeset
|
251 |
To release all memory call #releaseAllMemory which simply sets the |
76a83f34c26a
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diff
changeset
|
252 |
AllocatedInstances class variable to nil (thus releasing those refs). |
76a83f34c26a
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diff
changeset
|
253 |
|
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parents:
diff
changeset
|
254 |
Example (automatic freeing as soon as ref to buffer is gone): |
1997 | 255 |
|buffer| |
848
76a83f34c26a
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diff
changeset
|
256 |
|
1997 | 257 |
buffer := ExternalBytes unprotectedNew:100. |
258 |
... |
|
848
76a83f34c26a
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diff
changeset
|
259 |
|
76a83f34c26a
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parents:
diff
changeset
|
260 |
|
76a83f34c26a
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parents:
diff
changeset
|
261 |
Example (manual freeing - never freed, if ref to buffer is gone): |
1997 | 262 |
|buffer| |
848
76a83f34c26a
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diff
changeset
|
263 |
|
1997 | 264 |
buffer := ExternalBytes new:100. |
265 |
... |
|
266 |
buffer free |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
diff
changeset
|
267 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
diff
changeset
|
268 |
|
76a83f34c26a
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parents:
diff
changeset
|
269 |
Example (delayed automatic freeing as soon as ref to buffer is gone): |
1997 | 270 |
|buffer| |
848
76a83f34c26a
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diff
changeset
|
271 |
|
1997 | 272 |
buffer := ExternalBytes new:100. |
273 |
... |
|
274 |
buffer unregister |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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diff
changeset
|
275 |
|
76a83f34c26a
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diff
changeset
|
276 |
This class only supports unstructured external data |
76a83f34c26a
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diff
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|
277 |
- see the companion class ExternalStructure for more. |
76a83f34c26a
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diff
changeset
|
278 |
|
76a83f34c26a
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diff
changeset
|
279 |
Notice: support for external data is still being developed - |
1997 | 280 |
a parser for C structure syntax and typedefs is on the way, |
281 |
making shared data with C programs much easier in the future. |
|
848
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changeset
|
282 |
|
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diff
changeset
|
283 |
Also notice, that this class may not be available or behave different |
76a83f34c26a
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diff
changeset
|
284 |
in other smalltalk systems, making code using it very unportable. |
76a83f34c26a
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diff
changeset
|
285 |
It is provided for C interfacing only. |
76a83f34c26a
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parents:
diff
changeset
|
286 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
diff
changeset
|
287 |
Finally note, that ST/X's memory system is much faster than malloc/free |
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|
288 |
in the normal case - especially for short term temporary objects, |
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|
289 |
automatically reclaimed object memory is about 5-10 times faster than |
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|
290 |
malloc/free. |
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|
291 |
Things may be different for huge byte-valued objects, which are to be |
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|
292 |
reclaimed by the oldspace colletor. |
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|
293 |
Anyway, for portability, we strongly warn from using this as a substitute |
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|
294 |
for byteArrays; it is meant for shared data with external C-functions ONLY. |
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|
295 |
|
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|
296 |
Debugging: |
1997 | 297 |
since all manual memory systems are subject of obscure errors, |
298 |
you may want to turn malloc-tracing on; this traces all allocations/frees |
|
299 |
done here. To do this, evaluate: 'ExternalBytes mallocTrace:true'. |
|
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300 |
|
1997 | 301 |
In addition, you may turn on full debugging (with 'ExternalBytes mallocDebug:true'); |
302 |
if turned on, all malloc/realloc requests are remembered and later free / realloc |
|
303 |
requests validated against this list (i.e. to detect freeing unallocated chunks). |
|
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|
304 |
|
1997 | 305 |
To benefit from this in C-code, we recommend you use __stx_malloc() / __stx_free() |
306 |
instead of malloc() / free(). To do so, redefine them in a header file (or cc comand line) |
|
307 |
and recompile your external c-libraries with this. |
|
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|
308 |
|
1997 | 309 |
I used this here to find memory leaks in the Xt libraries (there are still some in |
310 |
the HTML widget ...). If mallocDebug is on, #dumpMallocChunks will print out what is |
|
311 |
leftOver. This may help to find trouble spots in your C-code. |
|
1286 | 312 |
|
313 |
[author:] |
|
1997 | 314 |
Claus Gittinger |
1317 | 315 |
|
316 |
[see also:] |
|
1997 | 317 |
ExternalAddress ExternalFunction |
318 |
ByteArray |
|
319 |
( how to write primitive code :html: programming/primitive.html ) |
|
848
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|
320 |
" |
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diff
changeset
|
321 |
! |
76a83f34c26a
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changeset
|
322 |
|
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changeset
|
323 |
examples |
76a83f34c26a
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diff
changeset
|
324 |
" |
76a83f34c26a
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parents:
diff
changeset
|
325 |
These examples below are not directly executable; |
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parents:
diff
changeset
|
326 |
some require primitive code to be compiled, or are simply given |
76a83f34c26a
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parents:
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|
327 |
as sceletton. |
76a83f34c26a
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parents:
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changeset
|
328 |
Notice, that in C, indexing is 0-based, while in Smalltalk, indices start |
76a83f34c26a
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parents:
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changeset
|
329 |
at 1. |
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parents:
diff
changeset
|
330 |
|
76a83f34c26a
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parents:
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changeset
|
331 |
allocating memory in ST, passing it to C: |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
diff
changeset
|
332 |
|
76a83f34c26a
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parents:
diff
changeset
|
333 |
in smalltalk: |
76a83f34c26a
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parents:
diff
changeset
|
334 |
... |
76a83f34c26a
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parents:
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changeset
|
335 |
bytes := ExternalBytes new:100. |
76a83f34c26a
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parents:
diff
changeset
|
336 |
... |
76a83f34c26a
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parents:
diff
changeset
|
337 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
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changeset
|
338 |
in C (assuming that the bytes-object has been passed): |
76a83f34c26a
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parents:
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changeset
|
339 |
|
76a83f34c26a
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parents:
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changeset
|
340 |
... |
76a83f34c26a
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parents:
diff
changeset
|
341 |
char *bytePtr; |
76a83f34c26a
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parents:
diff
changeset
|
342 |
|
76a83f34c26a
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parents:
diff
changeset
|
343 |
bytePtr = (char *)(__externalBytesAddress(bytes)); |
76a83f34c26a
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parents:
diff
changeset
|
344 |
if (bytePtr) { |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
diff
changeset
|
345 |
... do something with bytes at bytePtr ... |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
diff
changeset
|
346 |
} |
76a83f34c26a
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parents:
diff
changeset
|
347 |
|
76a83f34c26a
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parents:
diff
changeset
|
348 |
freeing (in ST): |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
diff
changeset
|
349 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
diff
changeset
|
350 |
... |
76a83f34c26a
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parents:
diff
changeset
|
351 |
bytes free. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
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parents:
diff
changeset
|
352 |
... |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
353 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
354 |
allocating memory in C, passing it to ST: |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
355 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
356 |
in C: |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
357 |
... |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
358 |
char *bytePtr; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
359 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
360 |
bytePtr = (char *)(malloc(100)); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
361 |
... |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
362 |
RETURN (__MKEXTERNALBYTES(bytePtr)); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
363 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
364 |
in Smalltalk (extracting bytes, integers or strings): |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
365 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
366 |
byteVal := bytes byteAt:1. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
367 |
... |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
368 |
intVal := bytes doubleWordAt:1 MSB:true. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
369 |
... |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
370 |
string := bytes stringAt:20. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
371 |
... |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
372 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
373 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
374 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
375 |
!ExternalBytes class methodsFor:'initialization'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
376 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
377 |
initialize |
913 | 378 |
Lobby isNil ifTrue:[ |
379 |
Lobby := Registry new |
|
380 |
] |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
381 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
382 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
383 |
!ExternalBytes class methodsFor:'instance creation'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
384 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
385 |
address:aNumber |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
386 |
"return a new ExternalBytes object to access bytes starting at aNumber. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
387 |
The memory at aNumber has been allocated elsewhere. The size is not known, |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
388 |
therefore byte accesses will NOT be checked for valid index. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
389 |
Use this, if you get a pointer from some external source (such as a |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
390 |
C-callBack function) and you have to extract bytes from that. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
391 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
392 |
DANGER ALERT: this method allows very bad things to be done to the |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
393 |
system - use with GREAT care (better: do not use it)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
394 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
395 |
^ self basicNew setAddress:aNumber size:nil |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
396 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
397 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
398 |
address:aNumber size:size |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
399 |
"return a new ExternalBytes object to access bytes starting at aNumber. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
400 |
The memory at aNumber has been allocated elsewhere. The size is known, |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
401 |
which allows byte accesses to be checked for valid index. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
402 |
Use this, if you get a pointer to a structure from some external source |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
403 |
(such as a C-callBack function) and you have to extract things from that. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
404 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
405 |
DANGER ALERT: this method allows very bad things to be done to the |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
406 |
system - use with GREAT care (better: do not use it)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
407 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
408 |
^ self basicNew setAddress:aNumber size:size |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
409 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
410 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
411 |
new:numberOfBytes |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
412 |
"allocate some memory usable for data; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
413 |
return a corresponding ExternalBytes object or nil (if malloc fails). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
414 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
415 |
Use this, if you have to pass a block of bytes to some |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
416 |
external destination (such as a C function) which does not copy the |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
417 |
data, but instead keeps a reference to it. For example, many functions |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
418 |
which expect strings simply keep a ref to the passed string - for those, |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
419 |
an ST/X string-pointer is not the right thing to pass, since ST/X objects |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
420 |
may change their address. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
421 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
422 |
DANGER ALERT: the memory is NOT automatically freed until it is either |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
423 |
MANUALLY freed (see #free) or the returned externalBytes object |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
424 |
is unprotected or the classes releaseAllMemory method is called." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
425 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
426 |
|newInst| |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
427 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
428 |
newInst := self unprotectedNew:numberOfBytes. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
429 |
newInst protectFromGC. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
430 |
^ newInst |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
431 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
432 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
433 |
|bytes| |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
434 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
435 |
bytes := ExternalBytes new:100. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
436 |
bytes wordAt:1 put:1. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
437 |
bytes doubleWordAt:3 put:16r12345678. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
438 |
bytes inspect |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
439 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
440 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
441 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
442 |
unprotectedNew:numberOfBytes |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
443 |
"allocate some memory usable for data; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
444 |
return a corresponding ExternalBytes object or nil (if malloc fails). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
445 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
446 |
DANGER ALERT: the memory block as allocated will be automatically freed |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
447 |
as soon as the reference to the returned externalBytes object |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
448 |
is gone (by the next garbage collect). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
449 |
If the memory has been passed to a C-function which |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
450 |
remembers this pointer, bad things may happen ...." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
451 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
452 |
|newInst| |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
453 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
454 |
newInst := self newForData:numberOfBytes. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
455 |
Lobby register:newInst. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
456 |
^ newInst |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
457 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
458 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
459 |
!ExternalBytes class methodsFor:'instance release'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
460 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
461 |
releaseAllMemory |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
462 |
AllocatedInstances := nil |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
463 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
464 |
... the next GC will get 'em |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
465 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
466 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
467 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
468 |
!ExternalBytes class methodsFor:'malloc debug'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
469 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
470 |
dumpMallocChunks |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
471 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
472 |
struct mallocList *entry; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
473 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
474 |
for (entry = mallocList; entry; entry=entry->next) { |
2788 | 475 |
#ifdef alpha64 |
2779 | 476 |
printf(" %016lx (%d)\n", entry->chunk, entry->size); |
477 |
#else |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
478 |
printf(" %08x (%d)\n", entry->chunk, entry->size); |
2779 | 479 |
#endif |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
480 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
481 |
%} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
482 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
483 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
484 |
freeAllMallocChunks |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
485 |
"free all stx_malloc'd memory. Be careful, this does no validation at all; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
486 |
It simply walks through all chunks and frees them unconditionally. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
487 |
This may be helpful during debugging memory-leaks, to release memory which |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
488 |
was not correctly freed by C-code. Howeve, only memory which was allocated |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
489 |
by __stx_malloc() is freed here - so you better compile your primitive code with |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
490 |
malloc redefined to stx_malloc. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
491 |
Also, mallocDebug has to be on to do this." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
492 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
493 |
"first free my own memory ..." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
494 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
495 |
self releaseAllMemory. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
496 |
ObjectMemory garbageCollect. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
497 |
%{ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
498 |
struct mallocList *entry; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
499 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
500 |
while ((entry = mallocList) != (struct mallocList *)0) { |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
501 |
if (@global(TraceMalloc) == true ) { |
2788 | 502 |
#ifdef alpha64 |
2779 | 503 |
printf("EXTBYTES [info]: **** forced free of %016lx (%d)\n", entry->chunk, entry->size); |
504 |
#else |
|
505 |
printf("EXTBYTES [info]: **** forced free of %08x (%d)\n", entry->chunk, entry->size); |
|
506 |
#endif |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
507 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
508 |
__stx_free(entry->chunk); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
509 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
510 |
%} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
511 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
512 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
513 |
mallocDebug:aBoolean |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
514 |
DebugMalloc := aBoolean |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
515 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
516 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
517 |
ExternalBytes mallocDebug:true |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
518 |
ExternalBytes mallocDebug:false |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
519 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
520 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
521 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
522 |
mallocTrace:aBoolean |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
523 |
TraceMalloc := aBoolean |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
524 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
525 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
526 |
ExternalBytes mallocTrace:true |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
527 |
ExternalBytes mallocTrace:false |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
528 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
529 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
530 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
531 |
numberOfAllocatedChunks |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
532 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
533 |
RETURN ( __MKSMALLINT(mallocCount) ); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
534 |
%} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
535 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
536 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
537 |
!ExternalBytes class methodsFor:'private instance creation/release'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
538 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
539 |
newForData:numberOfBytes |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
540 |
"allocate some memory usable for data; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
541 |
return a corresponding ExternalBytes object or nil (if malloc fails). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
542 |
This is a private entry - no setup for memory reclamation is done here." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
543 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
544 |
|addr| |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
545 |
%{ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
546 |
char *space; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
547 |
unsigned long _addr = 0; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
548 |
unsigned int nBytes; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
549 |
char *__stx_malloc(); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
550 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
551 |
/* |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
552 |
* this one is not at all critical - simply return some space |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
553 |
* to be used for data space of loaded-in binaries. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
554 |
*/ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
555 |
if (__isSmallInteger(numberOfBytes)) { |
1133 | 556 |
nBytes = __intVal(numberOfBytes); |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
557 |
if (nBytes > 0) { |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
558 |
space = __stx_malloc(nBytes); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
559 |
_addr = (unsigned long) space; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
560 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
561 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
562 |
if (_addr > 0) { |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
563 |
if (_addr && (@global(TraceMalloc) == true)) { |
2788 | 564 |
#ifdef alpha64 |
2779 | 565 |
printf("EXTBYTES [info]: allocated %d bytes at: %016lx\n", nBytes, _addr); |
566 |
#else |
|
567 |
printf("EXTBYTES [info]: allocated %d bytes at: %08x\n", nBytes, _addr); |
|
568 |
#endif |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
569 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
570 |
addr = __MKUINT(_addr); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
571 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
572 |
%}. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
573 |
addr isNil ifTrue:[ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
574 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
575 |
memory allocation failed |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
576 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
577 |
^ ObjectMemory mallocFailureSignal raise |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
578 |
]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
579 |
^ self basicNew setAddress:addr size:numberOfBytes |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
580 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
581 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
582 |
newForText:numberOfBytes |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
583 |
"EXPERIMENTAL; do NEVER use this private method. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
584 |
Allocate some memory usable to put machine executable instructions into; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
585 |
return a corresponding ExternalBytes object or nil. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
586 |
These bytes are NOT subject to garbage collection; therefore someone |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
587 |
must take care of freeing the memory when its no longer needed. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
588 |
This method may not be available on all architectures |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
589 |
(i.e. those that do not allow allocating text-memory). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
590 |
This is a private entry - no setup for memory reclamation is done here. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
591 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
592 |
OBSOLETE: this method will vanish soon" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
593 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
594 |
%{ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
595 |
#if ! defined(CAN_USE_DATA_FOR_TEXT) |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
596 |
/* |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
597 |
* this one should allocate some space, into which we can put |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
598 |
* some code to be executed. You are in bad luck, if running on |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
599 |
* a SepId machine or if data space cannot be executed. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
600 |
* All you can do then, is to look for any OS-hooks and add more code here. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
601 |
*/ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
602 |
#endif |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
603 |
%}. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
604 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
605 |
assume data is ok for instructions as well ... |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
606 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
607 |
^ self newForData:numberOfBytes |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
608 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
609 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
610 |
!ExternalBytes class methodsFor:'queries'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
611 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
612 |
isBuiltInClass |
1267 | 613 |
"return true if this class is known by the run-time-system. |
614 |
Here, true is returned." |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
615 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
616 |
^ true |
1267 | 617 |
|
618 |
"Modified: 23.4.1996 / 15:57:50 / cg" |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
619 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
620 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
621 |
sizeofDouble |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
622 |
"return the number of bytes used by the machines native doubles" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
623 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
624 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
625 |
RETURN (__MKSMALLINT( sizeof(double))); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
626 |
%} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
627 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
628 |
ExternalBytes sizeofDouble |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
629 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
630 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
631 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
632 |
sizeofFloat |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
633 |
"return the number of bytes used by the machines native floats" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
634 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
635 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
636 |
RETURN (__MKSMALLINT( sizeof(float))); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
637 |
%} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
638 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
639 |
ExternalBytes sizeofFloat |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
640 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
641 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
642 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
643 |
sizeofInt |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
644 |
"return the number of bytes used by the machines native integer" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
645 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
646 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
647 |
RETURN (__MKSMALLINT( sizeof(int))); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
648 |
%} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
649 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
650 |
ExternalBytes sizeofInt |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
651 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
652 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
653 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
654 |
sizeofLong |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
655 |
"return the number of bytes used by the machines native longs" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
656 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
657 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
658 |
RETURN (__MKSMALLINT( sizeof(long))); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
659 |
%} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
660 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
661 |
ExternalBytes sizeofLong |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
662 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
663 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
664 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
665 |
sizeofPointer |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
666 |
"return the number of bytes used by the machines native pointer" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
667 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
668 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
669 |
RETURN (__MKSMALLINT( sizeof(char *))); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
670 |
%} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
671 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
672 |
ExternalBytes sizeofPointer |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
673 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
674 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
675 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
676 |
sizeofShort |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
677 |
"return the number of bytes used by the machines native short" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
678 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
679 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
680 |
RETURN (__MKSMALLINT( sizeof(short))); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
681 |
%} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
682 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
683 |
ExternalBytes sizeofShort |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
684 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
685 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
686 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
687 |
!ExternalBytes methodsFor:'accessing'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
688 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
689 |
address |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
690 |
"return the start address as an integer" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
691 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
692 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
693 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
694 |
int addr; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
695 |
|
1133 | 696 |
if (__INST(address_) != nil) { |
2769 | 697 |
addr = (INT)__INST(address_); |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
698 |
if (addr <= _MAX_INT) { |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
699 |
RETURN ( __MKSMALLINT(addr) ); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
700 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
701 |
RETURN ( __MKUINT(addr)); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
702 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
703 |
%}. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
704 |
^ nil |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
705 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
706 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
707 |
basicAt:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
708 |
"return the byte at index, anInteger; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
709 |
Indices are 1-based, therefore |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
710 |
this is the byte at (address + index - 1)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
711 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
712 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
713 |
|
1822 | 714 |
unsigned char *cp = (unsigned char *)(__INST(address_)); |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
715 |
int idx; |
1997 | 716 |
OBJ sz; |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
717 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
718 |
if (cp && __isSmallInteger(index)) { |
1133 | 719 |
idx = __intVal(index); |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
720 |
if (idx > 0) { |
1997 | 721 |
if (((sz = __INST(size)) == nil) |
722 |
|| (__intVal(sz) >= idx)) { |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
723 |
cp = cp + idx - 1; |
1133 | 724 |
RETURN ( __MKSMALLINT(*cp) ); |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
725 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
726 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
727 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
728 |
%}. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
729 |
(size notNil and:[self address notNil]) ifTrue:[ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
730 |
^ self subscriptBoundsError:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
731 |
]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
732 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
733 |
invalid index or unallocated |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
734 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
735 |
self primitiveFailed |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
736 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
737 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
738 |
basicAt:index put:value |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
739 |
"set the byte at index, anInteger to value which must be 0..255. |
1220 | 740 |
Returns value (sigh). |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
741 |
Indices are 1-based, therefore |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
742 |
this is the byte at (address + index - 1)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
743 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
744 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
745 |
|
1822 | 746 |
unsigned char *cp = (unsigned char *)(__INST(address_)); |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
747 |
int val; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
748 |
int idx; |
1997 | 749 |
OBJ sz; |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
750 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
751 |
if (cp && __bothSmallInteger(index, value)) { |
1997 | 752 |
idx = __intVal(index); |
753 |
if (idx > 0) { |
|
754 |
if (((sz = __INST(size)) == nil) |
|
755 |
|| (__intVal(sz) >= idx)) { |
|
756 |
val = __intVal(value); |
|
757 |
if ((val & ~0xFF) == 0) /* i.e. (val >= 0) && (val <= 255) */ { |
|
758 |
cp[idx-1] = val; |
|
759 |
RETURN ( value ); |
|
760 |
} |
|
761 |
} |
|
762 |
} |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
763 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
764 |
%}. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
765 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
766 |
(size notNil and:[self address notNil]) ifTrue:[ |
1997 | 767 |
^ self subscriptBoundsError:index |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
768 |
]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
769 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
770 |
invalid index, invalid value or unallocated |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
771 |
" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
772 |
self primitiveFailed |
1220 | 773 |
|
774 |
"Modified: 19.4.1996 / 11:15:05 / cg" |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
775 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
776 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
777 |
basicSize |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
778 |
"we do not know how many bytes are valid" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
779 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
780 |
size isNil ifTrue:[^ 0]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
781 |
^ size |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
782 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
783 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
784 |
byteAt:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
785 |
"return the unsigned byte at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
786 |
Indices are 1-based, therefore |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
787 |
this is the byte at (address + index - 1)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
788 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
789 |
^ self basicAt:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
790 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
791 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
792 |
byteAt:index put:aByteValuedInteger |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
793 |
"set the byte at index. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
794 |
Indices are 1-based, therefore |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
795 |
this is the byte at (address + index - 1)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
796 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
797 |
^ self basicAt:index put:aByteValuedInteger |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
798 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
799 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
800 |
doubleWordAt:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
801 |
"return the unsigned long at index, anInteger. fetching in the machines natural byteorder. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
802 |
Here, unaligned accesses are allowed - in C, this is usually an error." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
803 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
804 |
^ self doubleWordAt:index MSB:(UninterpretedBytes isBigEndian) |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
805 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
806 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
807 |
doubleWordAt:index MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
808 |
"return the unsigned long at index, anInteger. fetching is MSB-first. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
809 |
Here, unaligned accesses are allowed - in C, this is usually an error." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
810 |
|
3044 | 811 |
|val b1 b2 b3 b4| |
812 |
||
813 |
b1 := self at:index. |
|
814 |
b2 := self at:(index + 1). |
|
815 |
b3 := self at:(index + 2). |
|
816 |
b4 := self at:(index + 3). |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
817 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
818 |
msb ifTrue:[ |
3044 | 819 |
val := b1. |
820 |
val := (val bitShift:8) + b2. |
|
821 |
val := (val bitShift:8) + b3. |
|
822 |
val := (val * 256) + b4. |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
823 |
] ifFalse:[ |
3044 | 824 |
val := b4. |
825 |
val := (val bitShift:8) + b3. |
|
826 |
val := (val bitShift:8) + b2. |
|
827 |
val := (val * 256) + b1. |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
828 |
]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
829 |
^ val |
3044 | 830 |
|
831 |
"Modified: 21.10.1997 / 02:46:40 / cg" |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
832 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
833 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
834 |
doubleWordAt:index put:aNumber |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
835 |
"set the long at index, index to aNumber; storing in the machines natural byteorder. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
836 |
Here, unaligned accesses are allowed - in C, this is usually an error." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
837 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
838 |
^ self doubleWordAt:index put:aNumber MSB:(UninterpretedBytes isBigEndian) |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
839 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
840 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
841 |
doubleWordAt:index put:aNumber MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
842 |
"set the long at index, index to aNumber; storing is MSB or LSB-first. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
843 |
Here, unaligned accesses are allowed - in C, this is usually an error." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
844 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
845 |
msb ifTrue:[ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
846 |
self at:index put:(aNumber digitAt:4). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
847 |
self at:(index + 1) put:(aNumber digitAt:3). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
848 |
self at:(index + 2) put:(aNumber digitAt:2). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
849 |
self at:(index + 3) put:(aNumber digitAt:1). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
850 |
] ifFalse:[ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
851 |
self at:index put:(aNumber digitAt:1). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
852 |
self at:(index + 1) put:(aNumber digitAt:2). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
853 |
self at:(index + 2) put:(aNumber digitAt:3). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
854 |
self at:(index + 3) put:(aNumber digitAt:4). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
855 |
]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
856 |
^ aNumber |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
857 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
858 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
859 |
doubleWordAtDoubleWordIndex:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
860 |
"return the unsigned long at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
861 |
Fetching in the machines natural byte order. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
862 |
Indices are 1-based and scaled as appropriate to allow |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
863 |
accessing the memory as an array of doubleWord entries. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
864 |
(i.e. indices are 1, 2, ...)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
865 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
866 |
^ self doubleWordAtDoubleWordIndex:index MSB:(UninterpretedBytes isBigEndian) |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
867 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
868 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
869 |
doubleWordAtDoubleWordIndex:index MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
870 |
"return the unsigned long at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
871 |
Fetching is MSB if msb is true, LSB otherwise. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
872 |
Indices are 1-based and scaled as appropriate to allow |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
873 |
accessing the memory as an array of doubleWord entries. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
874 |
(i.e. indices are 1, 2, ...)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
875 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
876 |
^ self doubleWordAt:(index - 1 * 4 + 1) MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
877 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
878 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
879 |
doubleWordAtDoubleWordIndex:index put:value |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
880 |
"set the long at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
881 |
Storing in the machines natural byte order. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
882 |
Indices are 1-based and scaled as appropriate to allow |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
883 |
accessing the memory as an array of doubleWord entries. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
884 |
(i.e. indices are 1, 2, ...)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
885 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
886 |
^ self doubleWordAtDoubleWordIndex:index put:value MSB:(UninterpretedBytes isBigEndian) |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
887 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
888 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
889 |
doubleWordAtDoubleWordIndex:index put:value MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
890 |
"set the long at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
891 |
Storing is MSB if msb is true, LSB otherwise. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
892 |
Indices are 1-based and scaled as appropriate to allow |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
893 |
accessing the memory as an array of doubleWord entries. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
894 |
(i.e. indices are 1, 2, ...)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
895 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
896 |
^ self doubleWordAt:(index - 1 * 4 + 1) put:value MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
897 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
898 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
899 |
instVarAt:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
900 |
index == 1 ifTrue:[ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
901 |
^ self address |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
902 |
]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
903 |
^ super instVarAt:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
904 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
905 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
906 |
stringAt:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
907 |
"return a string starting at index up to the 0-byte" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
908 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
909 |
|stream i c| |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
910 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
911 |
stream := WriteStream on:''. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
912 |
i := index. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
913 |
[(c := self basicAt:i) ~~ 0] whileTrue:[ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
914 |
stream nextPut:(Character value:c). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
915 |
i := i + 1. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
916 |
]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
917 |
^ stream contents |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
918 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
919 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
920 |
stringAt:index size:maxSize |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
921 |
"return a string starting at index up to maxSize, or a 0-byte" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
922 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
923 |
|stream i c| |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
924 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
925 |
stream := WriteStream on:(String new:maxSize). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
926 |
i := index. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
927 |
[(i <= maxSize) |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
928 |
and:[(c := self basicAt:i) ~~ 0]] whileTrue:[ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
929 |
stream nextPut:(Character value:c). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
930 |
i := i + 1. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
931 |
]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
932 |
^ stream contents |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
933 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
934 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
935 |
wordAt:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
936 |
"return the unsigned short at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
937 |
Fetching is in the machines natural byte order. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
938 |
Indices are 1-based, therefore |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
939 |
this is the byte at (address + index - 1). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
940 |
Here, unaligned accesses are allowed - in C, this is usually an error." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
941 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
942 |
^ self wordAt:index msb:(UninterpretedBytes isBigEndian) |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
943 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
944 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
945 |
wordAt:index MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
946 |
"return the unsigned short at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
947 |
Fetching is MSB if msb is true, LSB otherwise. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
948 |
Indices are 1-based, |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
949 |
therefore the first byte fetched is the byte at (address + index - 1). |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
950 |
Here, unaligned accesses are allowed - in C, this is usually an error." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
951 |
|
2779 | 952 |
|b1 b2| |
953 |
||
954 |
b1 := self at:index. |
|
955 |
b2 := self at:(index + 1). |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
956 |
msb ifTrue:[ |
2779 | 957 |
^ (b1 bitShift:8) + b2 |
958 |
]. |
|
959 |
^ (b2 bitShift:8) + b1 |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
960 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
961 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
962 |
wordAt:index put:aNumber |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
963 |
"set the short at index, index to aNumber; storing in the machines natural byte order. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
964 |
Here, unaligned accesses are allowed - in C, this is usually an error." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
965 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
966 |
^ self wordAt:index put:aNumber msb:(UninterpretedBytes isBigEndian) |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
967 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
968 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
969 |
wordAt:index put:aNumber MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
970 |
"set the short at index, index to aNumber. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
971 |
Storing is MSB if msb is true, LSB otherwise. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
972 |
Here, unaligned accesses are allowed - in C, this is usually an error." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
973 |
|
2779 | 974 |
|dig1 dig2 b1 b2| |
975 |
||
976 |
dig1 := aNumber digitAt:1. |
|
977 |
dig2 := aNumber digitAt:2. |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
978 |
msb ifTrue:[ |
2779 | 979 |
b1 := dig2. |
980 |
b2 := dig1. |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
981 |
] ifFalse:[ |
2779 | 982 |
b1 := dig1. |
983 |
b2 := dig2. |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
984 |
]. |
2779 | 985 |
self at:index put:b1. |
986 |
self at:(index + 1) put:b2. |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
987 |
^ aNumber |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
988 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
989 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
990 |
wordAtWordIndex:index |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
991 |
"return the unsigned short at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
992 |
Fetching in the machines natural byte order. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
993 |
Indices are 1-based and scaled as appropriate to allow |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
994 |
accessing the memory as an array of word entries. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
995 |
(i.e. indices are 1, 2, ...)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
996 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
997 |
^ self wordAtWordIndex:index MSB:(UninterpretedBytes isBigEndian) |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
998 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
999 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1000 |
wordAtWordIndex:index MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1001 |
"return the unsigned short at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1002 |
Fetching is MSB if msb is true, LSB otherwise. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1003 |
Indices are 1-based and scaled as appropriate to allow |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1004 |
accessing the memory as an array of word entries. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1005 |
(i.e. indices are 1, 2, ...)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1006 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1007 |
^ self wordAt:(index - 1 * 2 + 1) MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1008 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1009 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1010 |
wordAtWordIndex:index put:value |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1011 |
"set the short at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1012 |
Storing in the machines natural byte order. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1013 |
Indices are 1-based and scaled as appropriate to allow |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1014 |
accessing the memory as an array of word entries. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1015 |
(i.e. indices are 1, 2, ...)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1016 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1017 |
^ self wordAtWordIndex:index put:value MSB:(UninterpretedBytes isBigEndian) |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1018 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1019 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1020 |
wordAtWordIndex:index put:value MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1021 |
"set the short at index, anInteger. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1022 |
Storing is MSB if msb is true, LSB otherwise. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1023 |
Indices are 1-based and scaled as appropriate to allow |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1024 |
accessing the memory as an array of word entries. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1025 |
(i.e. indices are 1, 2, ...)" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1026 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1027 |
^ self wordAt:(index - 1 * 2 + 1) put:value MSB:msb |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1028 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1029 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1030 |
!ExternalBytes methodsFor:'freeing'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1031 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1032 |
free |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1033 |
"free a previously allocated piece of memory - be very careful, there |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1034 |
are no checks done here. All dangers you usually have with malloc/free |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1035 |
are present here ..." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1036 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1037 |
"at least, we check for double freeing the same chunk" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1038 |
self address isNil ifTrue:[ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1039 |
self error:'freeing memory twice'. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1040 |
^ self |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1041 |
]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1042 |
Lobby unregister:self. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1043 |
self disposed. "/ does what we need here .. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1044 |
self unprotectFromGC |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1045 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1046 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1047 |
!ExternalBytes methodsFor:'instance release'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1048 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1049 |
disposed |
2779 | 1050 |
"some ExternalBytes object was finalized; |
1051 |
free the associated heap memory with it" |
|
1052 |
||
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1053 |
%{ /* NOCONTEXT */ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1054 |
char *mem = (char *)0; |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1055 |
|
1133 | 1056 |
mem = (char *)(__INST(address_)); |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1057 |
if (mem) { |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1058 |
__stx_free(mem); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1059 |
} |
1133 | 1060 |
__INST(address_) = __INST(size) = nil; |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1061 |
if (mem && (@global(TraceMalloc) == true)) { |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1062 |
printf("EXTBYTES: freed memory at: %08x\n", mem); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1063 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1064 |
%} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1065 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1066 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1067 |
shallowCopyForFinalization |
1242 | 1068 |
"redefined to return a lightweight copy |
1069 |
- all we need is the memory handle" |
|
1070 |
||
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1071 |
^ ExternalBytes basicNew setAddress:self address size:size |
1242 | 1072 |
|
1073 |
"Modified: 20.4.1996 / 23:23:28 / cg" |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1074 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1075 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1076 |
!ExternalBytes methodsFor:'printing & storing'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1077 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1078 |
displayString |
2957 | 1079 |
"return a printed representation of the receiver for displaying" |
1080 |
||
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1081 |
^ 'ExternalBytes at:' , (self address printStringRadix:16) |
2957 | 1082 |
|
1083 |
"Modified: 20.9.1997 / 11:39:29 / cg" |
|
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1084 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1085 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1086 |
!ExternalBytes methodsFor:'private accessing'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1087 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1088 |
setAddress:aNumber size:sz |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1089 |
"set the start address and size" |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1090 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1091 |
%{ /* NOCONTEXT */ |
1133 | 1092 |
if (__INST(address_) == nil) { |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1093 |
if (aNumber == nil) { |
1133 | 1094 |
__INST(address_) = nil; |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1095 |
} else { |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1096 |
if (__isSmallInteger(aNumber)) { |
1133 | 1097 |
__INST(address_) = (OBJ)(__intVal(aNumber)); |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1098 |
} else { |
1133 | 1099 |
__INST(address_) = (OBJ) __longIntVal(aNumber); |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1100 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1101 |
} |
1133 | 1102 |
__INST(size) = sz; |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1103 |
RETURN (self); |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1104 |
} |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1105 |
%}. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1106 |
^ self error:'cannot change address' |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1107 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1108 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1109 |
!ExternalBytes methodsFor:'registration'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1110 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1111 |
protectFromGC |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1112 |
"enter a reference to the receiver into the AllocatedInstances |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1113 |
class variable - this prevents it from ever being finalized by |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1114 |
the garbage collector, thus protecting the underlying memory." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1115 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1116 |
AllocatedInstances isNil ifTrue:[ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1117 |
AllocatedInstances := IdentitySet new |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1118 |
]. |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1119 |
AllocatedInstances add:self |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1120 |
! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1121 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1122 |
unprotectFromGC |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1123 |
"remove the receiver from the AllocatedInstances |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1124 |
class variable - if there is no other reference to the receiver, |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1125 |
the next garbage collect will finalize the receiver and the underlying |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1126 |
memory be freed." |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1127 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1128 |
AllocatedInstances notNil ifTrue:[ |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1129 |
AllocatedInstances remove:self ifAbsent:nil |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1130 |
] |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1131 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1132 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1133 |
!ExternalBytes class methodsFor:'documentation'! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1134 |
|
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1135 |
version |
3044 | 1136 |
^ '$Header: /cvs/stx/stx/libbasic/Attic/ExtBytes.st,v 1.15 1997-10-21 17:41:43 cg Exp $' |
848
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1137 |
! ! |
76a83f34c26a
moved ExtBytes & ExtFunc from libbasic2
Claus Gittinger <cg@exept.de>
parents:
diff
changeset
|
1138 |
ExternalBytes initialize! |