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Merge branch 'vectored-exception-handlers' into 'main'

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Small fixes and cleanups for Vectored Exception Handlers

See merge request GNOME/glib!3569
This commit is contained in:
Philip Withnall 2023-10-04 08:19:57 +00:00
commit 9f6b42af6e
1 changed files with 12 additions and 10 deletions
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22
glib/gthread-win32.c
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@ -571,7 +571,7 @@ SetThreadName (DWORD dwThreadID,
info.dwThreadID = dwThreadID;
info.dwFlags = 0;
infosize = sizeof (info) / sizeof (DWORD);
infosize = sizeof (info) / sizeof (ULONG_PTR);
#ifdef _MSC_VER
__try
@ -579,14 +579,12 @@ SetThreadName (DWORD dwThreadID,
RaiseException (EXCEPTION_SET_THREAD_NAME, 0, infosize,
(const ULONG_PTR *) &info);
}
__except (EXCEPTION_EXECUTE_HANDLER)
__except (GetExceptionCode () == EXCEPTION_SET_THREAD_NAME ?
EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
{
}
#else
/* Without a debugger we *must* have an exception handler,
* otherwise raising an exception will crash the process.
*/
if ((!IsDebuggerPresent ()) && (SetThreadName_VEH_handle == NULL))
if ((!IsDebuggerPresent ()) || (SetThreadName_VEH_handle == NULL))
return;
RaiseException (EXCEPTION_SET_THREAD_NAME, 0, infosize, (const ULONG_PTR *) &info);
@ -659,11 +657,15 @@ g_thread_win32_init (void)
InitializeCriticalSection (&g_private_lock);
#ifndef _MSC_VER
SetThreadName_VEH_handle = AddVectoredExceptionHandler (1, &SetThreadName_VEH);
/* Set the handler as last to not interfere with ASAN runtimes.
* Many ASAN implementations (currently all three of GCC, CLANG
* and MSVC) install a Vectored Exception Handler that must be
* first in the sequence to work well
*/
SetThreadName_VEH_handle = AddVectoredExceptionHandler (0, &SetThreadName_VEH);
if (SetThreadName_VEH_handle == NULL)
{
/* This is bad, but what can we do? */
}
g_critical ("%s failed with error code %u",
"AddVectoredExceptionHandler", (unsigned int) GetLastError ());
#endif
}