"
jv:libgdbs - GNU Debugger Interface Library
Copyright (C) 2015-now Jan Vrany
Copyright (C) 2022 LabWare

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the 'Software'), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"
"{ Package: 'jv:vdb' }"

"{ NameSpace: Smalltalk }"

Object subclass:#RR
	instanceVariableNames:'port pty pid announcer'
	classVariableNames:'RRExecutable RRPort'
	poolDictionaries:''
	category:'RR'
!

!RR class methodsFor:'documentation'!

copyright
"
jv:libgdbs - GNU Debugger Interface Library
Copyright (C) 2015-now Jan Vrany
Copyright (C) 2022 LabWare

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the 'Software'), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"
!

documentation
"
    Class `RR` represents a Smalltalk inteface to
    Mozilla rr

    [author:]
        Jan Vrany <jan.vrany@fit.cvut.cz>

    [instance variables:]

    [class variables:]

    [see also:]
        https://rr-project.org/

"
! !

!RR class methodsFor:'initialization'!

initialize
    "Invoked at system start or when the class is dynamically loaded."

    "/ please change as required (and remove this comment)

    RRExecutable := nil. "/ nil means default
    RRPort := 9876

    "Modified: / 27-07-2018 / 07:40:21 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!RR class methodsFor:'instance creation'!

new
    "return an initialized instance"

    ^ self basicNew initialize.
!

replay
    ^ self new

    "Created: / 26-07-2018 / 16:53:10 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!RR class methodsFor:'accessing'!

executable
    ^ RRExecutable ? (OperatingSystem pathOfCommand:'rr')

    "Created: / 26-07-2018 / 21:55:17 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

executable: aString
    RRExecutable := aString

    "Created: / 26-07-2018 / 21:54:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!RR class methodsFor:'queries'!

available
    | exe |

    exe := self executable.
    ^ exe notNil and:[ OperatingSystem canExecuteCommand: exe ]

    "
    RR available
    "

    "Created: / 26-07-2018 / 21:56:29 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!RR methodsFor:'accessing'!

announcer
    ^ announcer
!

consoleInput
    ^ pty master

    "Created: / 26-07-2018 / 16:56:43 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

consoleOutput
    ^ pty master

    "Created: / 26-07-2018 / 16:56:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

port
    ^ port

    "Created: / 26-07-2018 / 22:11:54 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!RR methodsFor:'initialization'!

initialize
    "Invoked when a new instance is created."

    announcer := Announcer new.

    "Modified: / 31-07-2018 / 08:29:03 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!RR methodsFor:'private'!

exited:status 
    pid := nil.
    announcer announce:((RRExitEvent new)
                setRR:self;
                setStatus:status).
    pty release.
    pty := nil.
    port := nil

    "Created: / 26-07-2018 / 17:03:10 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 31-07-2018 / 08:34:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!RR methodsFor:'queries'!

running
    "Return true, if RR replay server is running"

    ^ pid notNil

    "Created: / 27-07-2018 / 07:42:25 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!RR methodsFor:'start & stop'!

start
    | args |

    pty := GDBPTY new.
    port := RRPort.
    RRPort := RRPort + 1.
    args := Array 
            with:(OperatingSystem pathOfCommand:'rr')
            with:'replay'
            with:'-s'
            with:port printString.
    Processor 
        monitor:[
            pid := OperatingSystem 
                    exec:args first
                    withArguments:args
                    environment:OperatingSystem getEnvironment
                    fileDescriptors:{
                            pty slave fileDescriptor.
                            pty slave fileDescriptor.
                            pty slave fileDescriptor
                        }
                    fork:true
                    newPgrp:false
                    inDirectory:Filename currentDirectory
                    showWindow:false.
            pid.
        ]
        action:[:stat | self exited:stat ].
    pid isNil ifTrue:[
        pty close.
        self error:'Failed to launch gdb'.
    ].
    announcer announce:(RRStartEvent new setRR:self)
!

stop
    OperatingSystem sendSignal:(OperatingSystem sigTERM) to:pid toGroup:false toAll:false.

    "Created: / 26-07-2018 / 21:23:47 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !


RR initialize!