author | Jan Vrany <jan.vrany@fit.cvut.cz> |
Fri, 18 Nov 2016 20:48:04 +0000 | |
branch | jv |
changeset 21024 | 8734987eb5c7 |
parent 20244 | 20922299fd44 |
parent 20702 | 5dfa0631a814 |
child 21026 | 81e280fc1b93 |
permissions | -rw-r--r-- |
6 | 1 |
" |
2 |
COPYRIGHT (c) 1992 by Claus Gittinger |
|
358 | 3 |
All Rights Reserved |
6 | 4 |
|
5 |
This software is furnished under a license and may be used |
|
6 |
only in accordance with the terms of that license and with the |
|
7 |
inclusion of the above copyright notice. This software may not |
|
8 |
be provided or otherwise made available to, or used by, any |
|
9 |
other person. No title to or ownership of the software is |
|
10 |
hereby transferred. |
|
11 |
" |
|
6233 | 12 |
"{ Package: 'stx:libbasic' }" |
13 |
||
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class: WeakIdentityDictionary
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14 |
"{ NameSpace: Smalltalk }" |
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class: WeakIdentityDictionary
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parents:
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|
15 |
|
6 | 16 |
IdentityDictionary subclass:#WeakIdentityDictionary |
1054 | 17 |
instanceVariableNames:'' |
18 |
classVariableNames:'' |
|
19 |
poolDictionaries:'' |
|
4350 | 20 |
category:'Collections-Weak' |
6 | 21 |
! |
22 |
||
10 | 23 |
!WeakIdentityDictionary class methodsFor:'documentation'! |
24 |
||
88 | 25 |
copyright |
26 |
" |
|
27 |
COPYRIGHT (c) 1992 by Claus Gittinger |
|
358 | 28 |
All Rights Reserved |
88 | 29 |
|
30 |
This software is furnished under a license and may be used |
|
31 |
only in accordance with the terms of that license and with the |
|
32 |
inclusion of the above copyright notice. This software may not |
|
33 |
be provided or otherwise made available to, or used by, any |
|
34 |
other person. No title to or ownership of the software is |
|
35 |
hereby transferred. |
|
36 |
" |
|
37 |
! |
|
38 |
||
10 | 39 |
documentation |
40 |
" |
|
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41 |
WeakIdentityDictionaries behave like IdentityDictionaries, |
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|
42 |
as long as the keys are still referenced by some |
1263 | 43 |
other (non-weak) object. |
44 |
However, once the last non-weak reference ceases to exist, |
|
45 |
the object will be automatically removed from the Weakcollection |
|
46 |
(with some delay: it will be removed after the next garbage collect). |
|
47 |
||
48 |
This class was added to support keeping track of dependents without |
|
88 | 49 |
keeping the values alive - values simply become nil when no one else |
50 |
references it. The original dependency mechanism used a regular Dictionary, |
|
51 |
which usually leads to a lot of garbage being kept due to a forgotten |
|
52 |
release. Using a WeakDictionary may be incompatible to ST-80 but is much |
|
53 |
more comfortable, since no manual release of dependents is needed. |
|
1263 | 54 |
|
2306 | 55 |
[Warning:] |
56 |
If you use this, be very careful since the collections size changes |
|
57 |
'magically' - for example, testing for being nonEmpty and then |
|
58 |
removing the first element may fail, since the element may vanish inbetween. |
|
59 |
In general, never trust the value as returned by the size/isEmpty messages. |
|
2260 | 60 |
|
61 |
||
1290 | 62 |
[author:] |
2910 | 63 |
Claus Gittinger |
1290 | 64 |
|
1263 | 65 |
[See also:] |
2910 | 66 |
WeakArray WeakValueDictionary WeakIdentitySet |
10 | 67 |
" |
68 |
! ! |
|
69 |
||
359 | 70 |
!WeakIdentityDictionary methodsFor:'adding & removing'! |
71 |
||
2298 | 72 |
at:key ifAbsent:exceptionBlock |
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73 |
"redefined to block interrupts |
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(avoid change of the dictionary while accessing)" |
2298 | 75 |
|
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76 |
|val| |
2298 | 77 |
|
20166 | 78 |
key class == SmallInteger ifTrue:[ |
79 |
"SmallIntegers cannot be stored into a WeakArray" |
|
80 |
^ exceptionBlock value. |
|
81 |
]. |
|
82 |
||
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83 |
(OperatingSystem blockInterrupts) ifTrue:[ |
20166 | 84 |
"/ already blocked |
85 |
^ super at:key ifAbsent:exceptionBlock. |
|
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86 |
]. |
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|
87 |
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2298 | 88 |
[ |
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val := super at:key ifAbsent:exceptionBlock. |
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#valueNowOrOnUnwindDo: -> #ensure:
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90 |
] ensure:[ |
20166 | 91 |
OperatingSystem unblockInterrupts. |
2298 | 92 |
]. |
93 |
^ val |
|
94 |
||
95 |
"Modified: 6.5.1996 / 12:22:26 / stefan" |
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"Modified: 1.7.1997 / 10:45:47 / cg" |
2298 | 97 |
! |
98 |
||
19193 | 99 |
at:key ifAbsentPut:replacementBlock |
100 |
"redefined to block interrupts |
|
101 |
(avoid change of the dictionary while accessing)" |
|
102 |
||
103 |
|val| |
|
104 |
||
20166 | 105 |
key class == SmallInteger ifTrue:[ |
106 |
"SmallIntegers cannot be stored into a WeakArray" |
|
107 |
self error:'WeakidentityDictionary: cannot store a SmallInteger'. |
|
108 |
]. |
|
109 |
||
19193 | 110 |
(OperatingSystem blockInterrupts) ifTrue:[ |
111 |
"/ already blocked |
|
112 |
^ super at:key ifAbsentPut:replacementBlock. |
|
113 |
]. |
|
114 |
||
115 |
[ |
|
116 |
val := super at:key ifAbsentPut:replacementBlock. |
|
117 |
] ensure:[ |
|
118 |
OperatingSystem unblockInterrupts. |
|
119 |
]. |
|
120 |
^ val |
|
121 |
! |
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122 |
||
1256 | 123 |
at:key put:anObject |
124 |
"add the argument anObject under key, aKey to the receiver. |
|
125 |
Return anObject (sigh). |
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Redefined to block interrupts, to avoid trouble when dependencies |
1256 | 127 |
are added within interrupting high prio processes." |
128 |
||
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|val| |
359 | 130 |
|
20166 | 131 |
key class == SmallInteger ifTrue:[ |
132 |
"SmallIntegers cannot be stored into a WeakArray" |
|
133 |
self error:'WeakidentityDictionary: cannot store a SmallInteger'. |
|
134 |
]. |
|
135 |
||
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136 |
(OperatingSystem blockInterrupts) ifTrue:[ |
20166 | 137 |
"/ already blocked |
138 |
^ super at:key put:anObject. |
|
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139 |
]. |
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|
140 |
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[ |
20166 | 142 |
val := super at:key put:anObject. |
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|
143 |
] ensure:[ |
20166 | 144 |
OperatingSystem unblockInterrupts. |
1790 | 145 |
]. |
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|
146 |
^ val |
1223 | 147 |
|
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148 |
"Modified: 6.5.1996 / 12:22:26 / stefan" |
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|
149 |
"Modified: 29.1.1997 / 15:08:45 / cg" |
359 | 150 |
! |
151 |
||
152 |
removeKey:aKey ifAbsent:aBlock |
|
1256 | 153 |
"remove the association under aKey from the collection, |
2910 | 154 |
return the value previously stored there. |
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155 |
If it was not in the collection return the result |
1256 | 156 |
from evaluating aBlock. |
157 |
||
158 |
Redefined to avoid synchronization problems, in case |
|
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|
159 |
of interrupts (otherwise, there could be some other operation |
1256 | 160 |
on the receiver done by another process, which garbles my contents)." |
1054 | 161 |
|
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|
162 |
|ret| |
359 | 163 |
|
20166 | 164 |
aKey class == SmallInteger ifTrue:[ |
165 |
"SmallIntegers cannot be stored into a WeakArray" |
|
166 |
^ aBlock value. |
|
167 |
]. |
|
168 |
||
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|
169 |
(OperatingSystem blockInterrupts) ifTrue:[ |
20166 | 170 |
"/ already blocked |
171 |
^ super removeKey:aKey ifAbsent:aBlock. |
|
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172 |
]. |
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|
173 |
|
359 | 174 |
[ |
20166 | 175 |
ret := super removeKey:aKey ifAbsent:aBlock |
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176 |
] ensure:[ |
20166 | 177 |
OperatingSystem unblockInterrupts |
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|
178 |
]. |
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|
179 |
^ ret |
1054 | 180 |
|
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181 |
"Modified: 6.5.1996 / 12:44:51 / stefan" |
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parents:
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|
182 |
"Modified: 29.1.1997 / 15:09:11 / cg" |
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183 |
! |
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|
184 |
|
16513 | 185 |
safeRemoveKey:key |
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|
186 |
"redefined to block interrupts |
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|
187 |
(avoid change of the dictionary while accessing)" |
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|
188 |
|
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|
189 |
|val| |
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|
190 |
|
20166 | 191 |
key class == SmallInteger ifTrue:[ |
192 |
"SmallIntegers cannot be stored into a WeakArray" |
|
193 |
^ nil. |
|
194 |
]. |
|
195 |
||
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|
196 |
(OperatingSystem blockInterrupts) ifTrue:[ |
20166 | 197 |
"/ already blocked |
198 |
^ super safeRemoveKey:key. |
|
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|
199 |
]. |
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|
200 |
|
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|
201 |
[ |
20166 | 202 |
val := super safeRemoveKey:key. |
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|
203 |
] ensure:[ |
20166 | 204 |
OperatingSystem unblockInterrupts. |
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|
205 |
]. |
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|
206 |
^ val |
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|
207 |
|
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|
208 |
"Modified: 6.5.1996 / 12:22:26 / stefan" |
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|
209 |
"Modified: 1.7.1997 / 10:45:52 / cg" |
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|
210 |
"Created: 1.7.1997 / 10:46:34 / cg" |
359 | 211 |
! ! |
212 |
||
10 | 213 |
!WeakIdentityDictionary methodsFor:'element disposal'! |
214 |
||
6309 | 215 |
clearDeadSlots |
20702 | 216 |
|wasBlocked anyChange| |
6309 | 217 |
|
218 |
" |
|
219 |
have to block here - dispose may be done at a low priority |
|
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|
220 |
from the background finalizer. If new items are added by a |
6309 | 221 |
higher prio process, the dictionary might get corrupted otherwise |
222 |
" |
|
223 |
wasBlocked := OperatingSystem blockInterrupts. |
|
20702 | 224 |
anyChange := false. |
6469 | 225 |
[ |
20702 | 226 |
keyArray |
227 |
forAllDeadIndicesDo:[:idx | |
|
228 |
valueArray basicAt:idx put:nil. |
|
229 |
tally := tally - 1. |
|
230 |
anyChange := true. |
|
231 |
] |
|
232 |
replacingCorpsesWith:DeletedEntry. |
|
6469 | 233 |
] ensure:[ |
20702 | 234 |
wasBlocked ifFalse:[OperatingSystem unblockInterrupts]. |
6469 | 235 |
]. |
20702 | 236 |
anyChange ifTrue:[ |
237 |
self changed:#ElementExpired |
|
238 |
]. |
|
6309 | 239 |
|
240 |
"Modified: / 13.12.2001 / 14:18:17 / martin" |
|
241 |
! |
|
242 |
||
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|
243 |
update:something with:aParameter from:changedObject |
2303
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parents:
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diff
changeset
|
244 |
"an element (either key or value) died - clear out slots for |
f19df2d4c238
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parents:
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|
245 |
disposed keys." |
6 | 246 |
|
2091
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|
247 |
something == #ElementExpired ifTrue:[ |
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diff
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|
248 |
self clearDeadSlots. |
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|
249 |
] |
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parents:
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diff
changeset
|
250 |
|
6309 | 251 |
"Created: / 7.1.1997 / 16:59:30 / stefan" |
252 |
"Modified: / 13.12.2001 / 14:17:58 / martin" |
|
6 | 253 |
! ! |
609 | 254 |
|
255 |
!WeakIdentityDictionary methodsFor:'private'! |
|
256 |
||
2315
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mhmh - be very careful when searching for some item.
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|
257 |
findKeyOrNil:key |
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parents:
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diff
changeset
|
258 |
"Look for the key in the receiver. |
2988 | 259 |
If it is found, return the index, |
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parents:
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diff
changeset
|
260 |
otherwise the index of the first unused slot. |
2329
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|
261 |
Grow the receiver, if key was not found, and no unused slots were present. |
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must always nil empty slots in #findKeyOrNil:
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diff
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|
262 |
|
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must always nil empty slots in #findKeyOrNil:
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parents:
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diff
changeset
|
263 |
Warning: an empty slot MUST be filled by the sender - it is only to be sent |
20037 | 264 |
by at:put: / add: - like methods." |
2315
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parents:
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diff
changeset
|
265 |
|
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parents:
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diff
changeset
|
266 |
|index "{ Class:SmallInteger }" |
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|
267 |
length "{ Class:SmallInteger }" |
18620
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parents:
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diff
changeset
|
268 |
startIndex probe |
2329
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must always nil empty slots in #findKeyOrNil:
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parents:
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diff
changeset
|
269 |
delIndex "{ Class:SmallInteger }"| |
2315
a9ff2fda8bae
mhmh - be very careful when searching for some item.
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
270 |
|
2329
937fc97d5544
must always nil empty slots in #findKeyOrNil:
Claus Gittinger <cg@exept.de>
parents:
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|
271 |
(OperatingSystem blockInterrupts) ifFalse:[ |
20037 | 272 |
"/ |
273 |
"/ may never be entered with interrupts enabled |
|
274 |
"/ |
|
275 |
OperatingSystem unblockInterrupts. |
|
276 |
self error:'unblocked call of findKeyOrNil'. |
|
2315
a9ff2fda8bae
mhmh - be very careful when searching for some item.
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
277 |
]. |
a9ff2fda8bae
mhmh - be very careful when searching for some item.
Claus Gittinger <cg@exept.de>
parents:
2306
diff
changeset
|
278 |
|
2329
937fc97d5544
must always nil empty slots in #findKeyOrNil:
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parents:
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diff
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|
279 |
delIndex := 0. |
2315
a9ff2fda8bae
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Claus Gittinger <cg@exept.de>
parents:
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changeset
|
280 |
|
2329
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must always nil empty slots in #findKeyOrNil:
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parents:
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diff
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|
281 |
length := keyArray basicSize. |
6953
6b3a197638f0
invoke hash/idHash only in one place (initialIndexFor..)
Claus Gittinger <cg@exept.de>
parents:
6469
diff
changeset
|
282 |
startIndex := index := self initialIndexForKey:key. |
2329
937fc97d5544
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parents:
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diff
changeset
|
283 |
|
16244 | 284 |
[ |
20037 | 285 |
probe := keyArray basicAt:index. |
286 |
key == probe ifTrue:[^ index]. |
|
287 |
probe isNil ifTrue:[ |
|
288 |
delIndex == 0 ifTrue:[^ index]. |
|
289 |
keyArray basicAt:delIndex put:nil. |
|
290 |
^ delIndex |
|
291 |
]. |
|
2329
937fc97d5544
must always nil empty slots in #findKeyOrNil:
Claus Gittinger <cg@exept.de>
parents:
2315
diff
changeset
|
292 |
|
20037 | 293 |
probe class == SmallInteger ifTrue:[ |
294 |
probe := DeletedEntry. |
|
295 |
keyArray basicAt:index put:probe. |
|
296 |
valueArray basicAt:index put:nil. |
|
297 |
tally := tally - 1. |
|
298 |
]. |
|
2315
a9ff2fda8bae
mhmh - be very careful when searching for some item.
Claus Gittinger <cg@exept.de>
parents:
2306
diff
changeset
|
299 |
|
20037 | 300 |
(delIndex == 0 and:[probe == DeletedEntry]) ifTrue:[ |
301 |
delIndex := index |
|
302 |
]. |
|
2329
937fc97d5544
must always nil empty slots in #findKeyOrNil:
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
303 |
|
20037 | 304 |
index == length ifTrue:[ |
305 |
index := 1 |
|
306 |
] ifFalse:[ |
|
307 |
index := index + 1 |
|
308 |
]. |
|
309 |
index == startIndex ifTrue:[ |
|
310 |
delIndex ~~ 0 ifTrue:[ |
|
311 |
keyArray basicAt:delIndex put:nil. |
|
312 |
^ delIndex |
|
313 |
]. |
|
314 |
self grow. |
|
315 |
length := keyArray basicSize. |
|
316 |
startIndex := index := self initialIndexForKey:key. |
|
317 |
]. |
|
16244 | 318 |
] loop. |
2315
a9ff2fda8bae
mhmh - be very careful when searching for some item.
Claus Gittinger <cg@exept.de>
parents:
2306
diff
changeset
|
319 |
|
2329
937fc97d5544
must always nil empty slots in #findKeyOrNil:
Claus Gittinger <cg@exept.de>
parents:
2315
diff
changeset
|
320 |
"Modified: 30.1.1997 / 15:04:34 / cg" |
2988 | 321 |
"Modified: 1.10.1997 / 11:25:32 / stefan" |
2315
a9ff2fda8bae
mhmh - be very careful when searching for some item.
Claus Gittinger <cg@exept.de>
parents:
2306
diff
changeset
|
322 |
! |
a9ff2fda8bae
mhmh - be very careful when searching for some item.
Claus Gittinger <cg@exept.de>
parents:
2306
diff
changeset
|
323 |
|
20237 | 324 |
findKeyOrNilOrDeletedEntry:key |
325 |
"Look for the key in the receiver. |
|
326 |
If it is found, return the index, |
|
327 |
otherwise the index of the first unused slot. |
|
328 |
Grow the receiver, if key was not found, and no unused slots were present." |
|
329 |
||
330 |
|index "{ Class:SmallInteger }" |
|
331 |
length "{ Class:SmallInteger }" |
|
332 |
startIndex probe |
|
333 |
delIndex "{ Class:SmallInteger }"| |
|
334 |
||
335 |
(OperatingSystem blockInterrupts) ifFalse:[ |
|
336 |
"/ |
|
337 |
"/ may never be entered with interrupts enabled |
|
338 |
"/ |
|
339 |
OperatingSystem unblockInterrupts. |
|
340 |
self error:'unblocked call of findKeyOrNil'. |
|
341 |
]. |
|
342 |
||
343 |
delIndex := 0. |
|
344 |
||
345 |
length := keyArray basicSize. |
|
346 |
startIndex := index := self initialIndexForKey:key. |
|
347 |
||
348 |
[ |
|
349 |
probe := keyArray basicAt:index. |
|
350 |
key == probe ifTrue:[^ index]. |
|
351 |
probe isNil ifTrue:[ |
|
352 |
delIndex == 0 ifTrue:[^ index]. |
|
353 |
^ delIndex |
|
354 |
]. |
|
355 |
||
356 |
probe class == SmallInteger ifTrue:[ |
|
357 |
probe := DeletedEntry. |
|
358 |
keyArray basicAt:index put:probe. |
|
359 |
valueArray basicAt:index put:nil. |
|
360 |
tally := tally - 1. |
|
361 |
]. |
|
362 |
||
363 |
(delIndex == 0 and:[probe == DeletedEntry]) ifTrue:[ |
|
364 |
delIndex := index |
|
365 |
]. |
|
366 |
||
367 |
index == length ifTrue:[ |
|
368 |
index := 1 |
|
369 |
] ifFalse:[ |
|
370 |
index := index + 1 |
|
371 |
]. |
|
372 |
index == startIndex ifTrue:[ |
|
373 |
delIndex ~~ 0 ifTrue:[ |
|
374 |
^ delIndex |
|
375 |
]. |
|
376 |
self grow. |
|
377 |
length := keyArray basicSize. |
|
378 |
startIndex := index := self initialIndexForKey:key. |
|
379 |
]. |
|
380 |
] loop. |
|
381 |
||
382 |
"Modified: 30.1.1997 / 15:04:34 / cg" |
|
383 |
"Modified: 1.10.1997 / 11:25:32 / stefan" |
|
384 |
! |
|
385 |
||
2298 | 386 |
grow:newSize |
387 |
"grow the receiver. |
|
388 |
Redefined to block interrupts, to avoid trouble when dependencies |
|
389 |
are added within interrupting high prio processes." |
|
390 |
||
2303
f19df2d4c238
avoid creation of a blocks if possible - if not, cheap ones are now created
Claus Gittinger <cg@exept.de>
parents:
2298
diff
changeset
|
391 |
"/ 'grow:' printCR. |
2298 | 392 |
|
2303
f19df2d4c238
avoid creation of a blocks if possible - if not, cheap ones are now created
Claus Gittinger <cg@exept.de>
parents:
2298
diff
changeset
|
393 |
(OperatingSystem blockInterrupts) ifTrue:[ |
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
394 |
"/ already blocked |
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
395 |
^ super grow:newSize. |
2303
f19df2d4c238
avoid creation of a blocks if possible - if not, cheap ones are now created
Claus Gittinger <cg@exept.de>
parents:
2298
diff
changeset
|
396 |
]. |
f19df2d4c238
avoid creation of a blocks if possible - if not, cheap ones are now created
Claus Gittinger <cg@exept.de>
parents:
2298
diff
changeset
|
397 |
|
2298 | 398 |
[ |
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
399 |
super grow:newSize |
6421
58dca33cf0fc
#valueNowOrOnUnwindDo: -> #ensure:
Claus Gittinger <cg@exept.de>
parents:
6309
diff
changeset
|
400 |
] ensure:[ |
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
401 |
OperatingSystem unblockInterrupts |
2298 | 402 |
]. |
403 |
||
404 |
"Created: 28.1.1997 / 23:41:39 / cg" |
|
2303
f19df2d4c238
avoid creation of a blocks if possible - if not, cheap ones are now created
Claus Gittinger <cg@exept.de>
parents:
2298
diff
changeset
|
405 |
"Modified: 29.1.1997 / 15:10:12 / cg" |
2298 | 406 |
! |
407 |
||
18333
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
408 |
initializeForCapacity:minSize |
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
409 |
"reset the receiver's contents. |
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
410 |
Redefined to block interrupts, to avoid trouble when dependencies |
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
411 |
are added within interrupting high prio processes." |
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
412 |
|
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
413 |
"/ 'setTally:' printCR. |
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
414 |
|
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
415 |
(OperatingSystem blockInterrupts) ifTrue:[ |
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
416 |
"/ already blocked |
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
417 |
super initializeForCapacity:minSize. |
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
418 |
^ self. |
18333
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
419 |
]. |
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
420 |
|
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
421 |
[ |
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
422 |
super initializeForCapacity:minSize |
18333
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
423 |
] ensure:[ |
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
424 |
OperatingSystem unblockInterrupts |
18333
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
425 |
]. |
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
426 |
|
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
427 |
"Created: 29.1.1997 / 11:40:12 / cg" |
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
428 |
"Modified: 29.1.1997 / 15:11:11 / cg" |
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
429 |
! |
854cf4f00536
class: WeakIdentityDictionary
Claus Gittinger <cg@exept.de>
parents:
16513
diff
changeset
|
430 |
|
609 | 431 |
keyContainerOfSize:n |
432 |
"return a container for keys of size n. |
|
20037 | 433 |
use WeakArrays here." |
609 | 434 |
|
435 |
|w| |
|
436 |
||
437 |
w := WeakArray new:n. |
|
2091
c11bb3e29a1b
Use dependent mechamism of WeakArray instead of #watcher.
Stefan Vogel <sv@exept.de>
parents:
2027
diff
changeset
|
438 |
w addDependent:self. |
609 | 439 |
^ w |
2091
c11bb3e29a1b
Use dependent mechamism of WeakArray instead of #watcher.
Stefan Vogel <sv@exept.de>
parents:
2027
diff
changeset
|
440 |
|
c11bb3e29a1b
Use dependent mechamism of WeakArray instead of #watcher.
Stefan Vogel <sv@exept.de>
parents:
2027
diff
changeset
|
441 |
"Modified: 7.1.1997 / 17:01:15 / stefan" |
2298 | 442 |
"Modified: 29.1.1997 / 14:18:49 / cg" |
443 |
! |
|
444 |
||
445 |
rehash |
|
446 |
"grow the receiver. |
|
447 |
Redefined to block interrupts, to avoid trouble when dependencies |
|
448 |
are added within interrupting high prio processes." |
|
449 |
||
450 |
"/ 'rehash' printCR. |
|
451 |
||
2303
f19df2d4c238
avoid creation of a blocks if possible - if not, cheap ones are now created
Claus Gittinger <cg@exept.de>
parents:
2298
diff
changeset
|
452 |
(OperatingSystem blockInterrupts) ifTrue:[ |
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
453 |
"/ already blocked |
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
454 |
super rehash. |
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
455 |
^ self. |
2303
f19df2d4c238
avoid creation of a blocks if possible - if not, cheap ones are now created
Claus Gittinger <cg@exept.de>
parents:
2298
diff
changeset
|
456 |
]. |
f19df2d4c238
avoid creation of a blocks if possible - if not, cheap ones are now created
Claus Gittinger <cg@exept.de>
parents:
2298
diff
changeset
|
457 |
|
2298 | 458 |
[ |
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
459 |
super rehash |
6421
58dca33cf0fc
#valueNowOrOnUnwindDo: -> #ensure:
Claus Gittinger <cg@exept.de>
parents:
6309
diff
changeset
|
460 |
] ensure:[ |
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
461 |
OperatingSystem unblockInterrupts |
2298 | 462 |
]. |
463 |
||
464 |
"Created: 29.1.1997 / 11:39:42 / cg" |
|
465 |
"Modified: 29.1.1997 / 14:18:52 / cg" |
|
609 | 466 |
! ! |
467 |
||
2741 | 468 |
!WeakIdentityDictionary methodsFor:'testing'! |
469 |
||
470 |
includes:anObject |
|
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
471 |
"redefined to block interrupts |
2741 | 472 |
(avoid change of the dictionary while accessing)" |
473 |
||
474 |
|val| |
|
475 |
||
476 |
(OperatingSystem blockInterrupts) ifTrue:[ |
|
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
477 |
"/ already blocked |
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
478 |
^ super includes:anObject. |
2741 | 479 |
]. |
480 |
||
481 |
[ |
|
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
482 |
val := super includes:anObject. |
6421
58dca33cf0fc
#valueNowOrOnUnwindDo: -> #ensure:
Claus Gittinger <cg@exept.de>
parents:
6309
diff
changeset
|
483 |
] ensure:[ |
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
484 |
OperatingSystem unblockInterrupts. |
2741 | 485 |
]. |
486 |
^ val |
|
487 |
||
488 |
"Modified: 6.5.1996 / 12:22:26 / stefan" |
|
489 |
"Modified: 1.7.1997 / 10:45:52 / cg" |
|
490 |
"Created: 1.7.1997 / 10:47:13 / cg" |
|
491 |
! |
|
492 |
||
493 |
includesKey:key |
|
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
494 |
"redefined to block interrupts |
2741 | 495 |
(avoid change of the dictionary while accessing)" |
496 |
||
497 |
|val| |
|
498 |
||
20166 | 499 |
key class == SmallInteger ifTrue:[ |
500 |
"SmallIntegers cannot be stored into a WeakArray" |
|
501 |
^ false. |
|
502 |
]. |
|
503 |
||
2741 | 504 |
(OperatingSystem blockInterrupts) ifTrue:[ |
20166 | 505 |
"/ already blocked |
506 |
^ super includesKey:key. |
|
2741 | 507 |
]. |
508 |
||
509 |
[ |
|
20166 | 510 |
val := super includesKey:key. |
6421
58dca33cf0fc
#valueNowOrOnUnwindDo: -> #ensure:
Claus Gittinger <cg@exept.de>
parents:
6309
diff
changeset
|
511 |
] ensure:[ |
20166 | 512 |
OperatingSystem unblockInterrupts. |
2741 | 513 |
]. |
514 |
^ val |
|
515 |
||
516 |
"Modified: 6.5.1996 / 12:22:26 / stefan" |
|
517 |
"Created: 1.7.1997 / 10:45:14 / cg" |
|
518 |
"Modified: 1.7.1997 / 10:45:52 / cg" |
|
9243 | 519 |
! |
520 |
||
521 |
isWeakCollection |
|
522 |
"return true, if the receiver has weak references to its elements." |
|
523 |
||
524 |
^ true |
|
2741 | 525 |
! ! |
526 |
||
635 | 527 |
!WeakIdentityDictionary class methodsFor:'documentation'! |
528 |
||
529 |
version |
|
18620
b4e9f25d6ce6
preparations for lined index list in WeakArray
Claus Gittinger <cg@exept.de>
parents:
18333
diff
changeset
|
530 |
^ '$Header$' |
635 | 531 |
! ! |
16244 | 532 |