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Code Issues Releases Wiki Activity

always override unhandled exception filter

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This commit is contained in:
Joshua Kriegshauser 2024-09-26 09:00:35 -07:00
parent cc860fe56a
commit 97a6a3dde7
2 changed files with 24 additions and 17 deletions
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35
public/client/TracyProfiler.cpp
View File

@ -1502,16 +1502,15 @@ void Profiler::InstallCrashHandler()
sigaction( SIGPIPE, &crashHandler, &m_prevSignal.pipe ); sigaction( SIGPIPE, &crashHandler, &m_prevSignal.pipe );
sigaction( SIGBUS, &crashHandler, &m_prevSignal.bus ); sigaction( SIGBUS, &crashHandler, &m_prevSignal.bus );
sigaction( SIGABRT, &crashHandler, &m_prevSignal.abrt ); sigaction( SIGABRT, &crashHandler, &m_prevSignal.abrt );
m_crashHandlerInstalled = true;
#endif #endif
#if defined _WIN32 && !defined TRACY_UWP && !defined TRACY_NO_CRASH_HANDLER #if defined _WIN32 && !defined TRACY_UWP && !defined TRACY_NO_CRASH_HANDLER
// We cannot use Vectored Exception handling because it catches application-wide frame-based SEH blocks. We only // We cannot use Vectored Exception handling because it catches application-wide frame-based SEH blocks. We only
// want to catch unhandled exceptions in the event that there is not already an unhandled exception filter. // want to catch unhandled exceptions.
if( auto prev = SetUnhandledExceptionFilter( CrashFilter ) ) m_prevHandler = SetUnhandledExceptionFilter( CrashFilter );
SetUnhandledExceptionFilter( prev ); // Already had a handler => put it back #endif
else
#ifndef TRACY_NO_CRASH_HANDLER
m_crashHandlerInstalled = true; m_crashHandlerInstalled = true;
#endif #endif
@ -1519,10 +1518,10 @@ void Profiler::InstallCrashHandler()
void Profiler::RemoveCrashHandler() void Profiler::RemoveCrashHandler()
{ {
#if defined _WIN32 && !defined TRACY_UWP #if defined _WIN32 && !defined TRACY_UWP && !defined TRACY_NO_CRASH_HANDLER
if( m_crashHandlerInstalled ) if( m_crashHandlerInstalled )
{ {
auto prev = SetUnhandledExceptionFilter( NULL ); auto prev = SetUnhandledExceptionFilter( (LPTOP_LEVEL_EXCEPTION_FILTER)m_prevHandler );
if( prev != CrashFilter ) if( prev != CrashFilter )
SetUnhandledExceptionFilter( prev ); // A different exception filter was installed over ours => put it back SetUnhandledExceptionFilter( prev ); // A different exception filter was installed over ours => put it back
} }
@ -1531,13 +1530,19 @@ void Profiler::RemoveCrashHandler()
#if defined __linux__ && !defined TRACY_NO_CRASH_HANDLER #if defined __linux__ && !defined TRACY_NO_CRASH_HANDLER
if( m_crashHandlerInstalled ) if( m_crashHandlerInstalled )
{ {
sigaction( TRACY_CRASH_SIGNAL, &m_prevSignal.pwr, nullptr ); auto restore = [this]( int signum, struct sigaction* prev ) {
sigaction( SIGILL, &m_prevSignal.ill, nullptr ); struct sigaction old;
sigaction( SIGFPE, &m_prevSignal.fpe, nullptr ); sigaction( signum, prev, &old );
sigaction( SIGSEGV, &m_prevSignal.segv, nullptr ); if( old.sa_sigaction != CrashHandler )
sigaction( SIGPIPE, &m_prevSignal.pipe, nullptr ); sigaction( signum, &old, nullptr ); // A different signal handler was installed over ours => put it back
sigaction( SIGBUS, &m_prevSignal.bus, nullptr ); };
sigaction( SIGABRT, &m_prevSignal.abrt, nullptr ); restore( TRACY_CRASH_SIGNAL, &m_prevSignal.pwr );
restore( SIGILL, &m_prevSignal.ill );
restore( SIGFPE, &m_prevSignal.fpe );
restore( SIGSEGV, &m_prevSignal.segv );
restore( SIGPIPE, &m_prevSignal.pipe );
restore( SIGBUS, &m_prevSignal.bus );
restore( SIGABRT, &m_prevSignal.abrt );
} }
#endif #endif
m_crashHandlerInstalled = false; m_crashHandlerInstalled = false;

4
public/client/TracyProfiler.hpp
View File

@ -1012,7 +1012,9 @@ private:
char* m_safeSendBuffer; char* m_safeSendBuffer;
size_t m_safeSendBufferSize; size_t m_safeSendBufferSize;
#ifndef _WIN32 #if defined _WIN32
void* m_prevHandler;
#else
int m_pipe[2]; int m_pipe[2];
int m_pipeBufSize; int m_pipeBufSize;
#endif #endif