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Enabled thread naming on Windows.

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This is now done without compiler or C runtime support for __try/__except.

(Granted, it uses Visual Studio-style inline asm, but still...)
This commit is contained in:
Ryan C. Gordon 2013-08-31 01:36:38 -04:00
parent ace1e98a18
commit 2bafbedac7
1 changed files with 26 additions and 10 deletions
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36
src/thread/windows/SDL_systhread.c
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@ -146,6 +146,7 @@ SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
}
#ifdef _MSC_VER
#pragma warning(disable : 4733)
#pragma pack(push,8)
typedef struct tagTHREADNAME_INFO
{
@ -155,31 +156,46 @@ typedef struct tagTHREADNAME_INFO
DWORD dwFlags; /* reserved for future use, must be zero */
} THREADNAME_INFO;
#pragma pack(pop)
static EXCEPTION_DISPOSITION
ignore_exception(void *a, void *b, void *c, void *d)
{
return ExceptionContinueExecution;
}
#endif
void
SDL_SYS_SetupThread(const char *name)
{
if (name != NULL) {
#if 0 /* !!! FIXME: __except needs C runtime, which we don't link against. */
#ifdef _MSC_VER /* !!! FIXME: can we do SEH on other compilers yet? */
/* This magic tells the debugger to name a thread if it's listening. */
#ifdef _MSC_VER
/* This magic tells the debugger to name a thread if it's listening.
The inline asm sets up SEH (__try/__except) without C runtime
support. See Microsoft Systems Journal, January 1997:
http://www.microsoft.com/msj/0197/exception/exception.aspx */
INT_PTR handler = (INT_PTR) ignore_exception;
THREADNAME_INFO inf;
inf.dwType = 0x1000;
inf.szName = name;
inf.dwThreadID = (DWORD) -1;
inf.dwFlags = 0;
__try
{
RaiseException(0x406D1388, 0, sizeof(inf)/sizeof(DWORD), (DWORD*)&inf);
__asm { /* set up SEH */
push handler
push fs:[0]
mov fs:[0],esp
}
__except(EXCEPTION_CONTINUE_EXECUTION)
{
/* The program itself should ignore this bogus exception. */
/* The program itself should ignore this bogus exception. */
RaiseException(0x406D1388, 0, sizeof(inf)/sizeof(DWORD), (DWORD*)&inf);
__asm { /* tear down SEH. */
mov eax,[esp]
mov fs:[0], eax
add esp, 8
}
#endif
#endif
}
}