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fix crash handler for stack overflwos

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This commit is contained in:
Glenn Maynard
2007-02-12 08:03:24 +00:00
parent ec31f8c1ec
commit daf107d606
1 changed files with 14 additions and 2 deletions
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stepmania/src/archutils/Win32/Crash.cpp
+14 -2
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@@ -264,7 +264,7 @@ void RunChild()
} }
} }
long __stdcall CrashHandler::ExceptionHandler( EXCEPTION_POINTERS *pExc ) static long MainExceptionHandler( EXCEPTION_POINTERS *pExc )
{ {
/* Flush the log it isn't cut off at the end. */ /* Flush the log it isn't cut off at the end. */
/* 1. We can't do regular file access in the crash handler. /* 1. We can't do regular file access in the crash handler.
@@ -321,7 +321,7 @@ long __stdcall CrashHandler::ExceptionHandler( EXCEPTION_POINTERS *pExc )
if( !g_CrashInfo.m_CrashReason[0] ) if( !g_CrashInfo.m_CrashReason[0] )
GetReason( pExc->ExceptionRecord, &g_CrashInfo ); GetReason( pExc->ExceptionRecord, &g_CrashInfo );
do_backtrace( g_CrashInfo.m_BacktracePointers, BACKTRACE_MAX_SIZE, GetCurrentProcess(), GetCurrentThread(), pExc->ContextRecord ); CrashHandler::do_backtrace( g_CrashInfo.m_BacktracePointers, BACKTRACE_MAX_SIZE, GetCurrentProcess(), GetCurrentThread(), pExc->ContextRecord );
RunChild(); RunChild();
@@ -356,6 +356,18 @@ long __stdcall CrashHandler::ExceptionHandler( EXCEPTION_POINTERS *pExc )
return EXCEPTION_EXECUTE_HANDLER; return EXCEPTION_EXECUTE_HANDLER;
} }
long __stdcall CrashHandler::ExceptionHandler( EXCEPTION_POINTERS *pExc )
{
/* If the stack overflowed, we have a very limited amount of stack space. Allocate
* a new stack, and run the exception handler in it, to increase the chances of success. */
int iSize = 1024*32;
char *pStack = (char *) VirtualAlloc( NULL, iSize, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE );
pStack += iSize;
_asm mov esp, pStack;
return MainExceptionHandler( pExc );
}
////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////
static bool IsValidCall(char *buf, int len) static bool IsValidCall(char *buf, int len)