GDBThreadStateTerminated.st
author Jan Vrany <jan.vrany@labware.com>
Thu, 07 Dec 2023 12:33:31 +0000
changeset 322 1b26d0a9560c
parent 272 cdd1c9ad00de
permissions -rw-r--r--
Emit and handle (custom) `-register-changed` notification This commit adds new (custom) asynchronous notification about register value being changed. Standard GDB does not notify MI clients about register value being changed when debugging (for example, by CLI command `set $rax = 1` or via Python's `Value.assign()`). This caused libgdb's register value cache being out of sync. In the past, this was partially worked around by manually emiting the notification on `GDBRegisterWithValue` APIs, but this did not (and could not) handle the case register was changed from GDB command line. To solve this problem, this commit installs a custom Python event handler that emits new GDB/MI notification - `-register-changed` - whenever a register changes after debugee is stopped. This has been enabled by upstream GDB commit 4825fd "gdb/python: implement support for sending custom MI async notifications" On libgdbs side, complete inferior state is invalidated. In theory, one could carefully invalidate only the changed `GDBRegisterWithValue` but in certain cases this could also change the backtrace (for example, if one updates stack pointer) or position in code. So it seems safer to just invalidate everything.
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472a4841a8b6 License this package under 'GNU Lesser General Public License'
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jv:libgdbs - GNU Debugger Interface Library
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Copyright (C) 2015-now Jan Vrany
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Copyright (C) 2021-2023 LabWare
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the 'Software'), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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"{ Package: 'jv:libgdbs' }"
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"{ NameSpace: Smalltalk }"
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GDBThreadState subclass:#GDBThreadStateTerminated
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	instanceVariableNames:''
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	classVariableNames:''
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	poolDictionaries:''
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	category:'GDB'
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!
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!GDBThreadStateTerminated class methodsFor:'documentation'!
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copyright
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"
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jv:libgdbs - GNU Debugger Interface Library
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Copyright (C) 2015-now Jan Vrany
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Copyright (C) 2021-2023 LabWare
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the 'Software'), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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parents: 231
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copies of the Software, and to permit persons to whom the Software is
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parents: 231
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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parents: 231
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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parents: 231
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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"
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! !
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!GDBThreadStateTerminated methodsFor:'printing & storing'!
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printOn:aStream
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    "append a printed representation if the receiver to the argument, aStream"
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    aStream nextPutAll: 'dead'
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    "Modified: / 22-09-2014 / 00:58:54 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!GDBThreadStateTerminated methodsFor:'testing'!
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isTerminated
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    ^ true
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    "Created: / 07-09-2014 / 23:22:54 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!GDBThreadStateTerminated class methodsFor:'documentation'!
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version_HG
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    ^ '$Changeset: <not expanded> $'
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! !
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