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more notes on the multithreaded access violation stuff!

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This commit is contained in:
Ryan Fleury
2024-05-29 08:31:24 -07:00
parent 2512d07c72
commit e073ff3218
1 changed files with 12 additions and 2 deletions
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src/demon/win32/demon_core_win32.c
+12 -2
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@@ -1900,7 +1900,7 @@ dmn_ctrl_run(Arena *arena, DMN_CtrlCtx *ctx, DMN_RunCtrls *ctrls)
// //
case EXCEPTION_DEBUG_EVENT: case EXCEPTION_DEBUG_EVENT:
{ {
// NOTE(rjf): Notes on multithreaded breakpoint events //- NOTE(rjf): Notes on multithreaded breakpoint events
// (2021/11/1): // (2021/11/1):
// //
// When many threads are simultaneously running, multiple threads // When many threads are simultaneously running, multiple threads
@@ -1928,7 +1928,17 @@ dmn_ctrl_run(Arena *arena, DMN_CtrlCtx *ctx, DMN_RunCtrls *ctrls)
// #B. If the actual unmodified instruction is an int 3, then this // #B. If the actual unmodified instruction is an int 3, then this
// becomes a trap event and we do not reset RIP. // becomes a trap event and we do not reset RIP.
// NOTE(rjf): The exception record struct has a 32-bit version and a //- NOTE(rjf): Further notes on MULTITHREADED STEPPING ACCESS VIOLATION
// EVENTS! @rjf @rjf @rjf
// (2024/05/29):
//
// Just adding another comment here to document that the above long
// comment went completely unnoticed by me during a pass over demon,
// and I had removed the proper rollback stuff here without reading
// the above comment. So this comment just serves to make that
// original comment even heftier.
//- NOTE(rjf): The exception record struct has a 32-bit version and a
// 64-bit version. We only currently handle the 64-bit version. // 64-bit version. We only currently handle the 64-bit version.
//- rjf: unpack //- rjf: unpack