/** True system-specific crash handler that gets called first */
void PlatformCrashHandler(int32 Signal, siginfo_t* Info, void* Context)
{
fprintf(stderr, "Signal %d caught.\n", Signal);
FLinuxCrashContext CrashContext;
CrashContext.InitFromSignal(Signal, Info, Context);
if (GCrashHandlerPointer)
{
GCrashHandlerPointer(CrashContext);
}
else
{
// call default one
DefaultCrashHandler(CrashContext);
}
}
/** True system-specific crash handler that gets called first */
void PlatformCrashHandler(int32 Signal, siginfo_t* Info, void* Context)
{
fprintf(stderr, "Signal %d caught.\n", Signal);
// Switch to malloc crash.
FPlatformMallocCrash::Get().SetAsGMalloc();
FLinuxCrashContext CrashContext;
CrashContext.InitFromSignal(Signal, Info, Context);
if (GCrashHandlerPointer)
{
GCrashHandlerPointer(CrashContext);
}
else
{
// call default one
DefaultCrashHandler(CrashContext);
}
}
/**
* Generates information for crash reporter
*/
void GenerateCrashInfoAndLaunchReporter(const FLinuxCrashContext & Context)
{
// do not report crashes for tools (particularly for crash reporter itself)
#if !IS_PROGRAM
// create a crash-specific directory
FString CrashInfoFolder = FString::Printf(TEXT("crashinfo-%s-pid-%d"), FApp::GetGameName(), getpid());
FString CrashInfoAbsolute = FPaths::ConvertRelativePathToFull(CrashInfoFolder);
if (IFileManager::Get().MakeDirectory(*CrashInfoFolder))
{
// generate "minidump"
Context.GenerateReport(FPaths::Combine(*CrashInfoFolder, TEXT("diagnostics.txt")));
// generate "WER"
GenerateWindowsErrorReport(FPaths::Combine(*CrashInfoFolder, TEXT("wermeta.xml")));
// generate "minidump" (just >1 byte)
GenerateMinidump(FPaths::Combine(*CrashInfoFolder, TEXT("minidump.dmp")));
// copy log
FString LogSrcAbsolute = FPlatformOutputDevices::GetAbsoluteLogFilename();
FString LogDstAbsolute = FPaths::Combine(*CrashInfoAbsolute, *FPaths::GetCleanFilename(LogSrcAbsolute));
FPaths::NormalizeDirectoryName(LogDstAbsolute);
static_cast<void>(IFileManager::Get().Copy(*LogDstAbsolute, *LogSrcAbsolute)); // best effort, so don't care about result: couldn't copy -> tough, no log
// try launching the tool and wait for its exit, if at all
const TCHAR * RelativePathToCrashReporter = TEXT("../../../engine/binaries/linux/crashreportclient"); // FIXME: painfully hard-coded
FProcHandle RunningProc = FPlatformProcess::CreateProc(RelativePathToCrashReporter, *(CrashInfoAbsolute + TEXT("/")), true, false, false, NULL, 0, NULL, NULL);
if (FPlatformProcess::IsProcRunning(RunningProc))
{
// do not wait indefinitely
double kTimeOut = 3 * 60.0;
double StartSeconds = FPlatformTime::Seconds();
for(;;)
{
if (!FPlatformProcess::IsProcRunning(RunningProc))
{
break;
}
if (FPlatformTime::Seconds() - StartSeconds > kTimeOut)
{
break;
}
};
}
}
#endif
FPlatformMisc::RequestExit(true);
}
/**
* Good enough default crash reporter.
*/
void DefaultCrashHandler(const FLinuxCrashContext & Context)
{
printf("DefaultCrashHandler: Signal=%d\n", Context.Signal);
// at this point we should already be using malloc crash handler (see PlatformCrashHandler)
const_cast<FLinuxCrashContext&>(Context).CaptureStackTrace();
if (GLog)
{
GLog->Flush();
}
if (GWarn)
{
GWarn->Flush();
}
if (GError)
{
GError->Flush();
GError->HandleError();
}
return Context.GenerateCrashInfoAndLaunchReporter();
}
bool FLinuxPlatformStackWalk::ProgramCounterToHumanReadableString( int32 CurrentCallDepth, uint64 ProgramCounter, ANSICHAR* HumanReadableString, SIZE_T HumanReadableStringSize, FGenericCrashContext* Context )
{
if (HumanReadableString && HumanReadableStringSize > 0)
{
ANSICHAR TempArray[MAX_SPRINTF];
if (CurrentCallDepth < 0)
{
if (PLATFORM_64BITS)
{
FCStringAnsi::Sprintf(TempArray, "[Callstack] 0x%016llx ", ProgramCounter);
}
else
{
FCStringAnsi::Sprintf(TempArray, "[Callstack] 0x%08x ", (uint32) ProgramCounter);
}
LinuxStackWalkHelpers::AppendToString(HumanReadableString, HumanReadableStringSize, Context, TempArray);
// won't be able to display names here
}
else
{
if (PLATFORM_64BITS)
{
FCStringAnsi::Sprintf(TempArray, "[Callstack] %02d 0x%016llx ", CurrentCallDepth, ProgramCounter);
}
else
{
FCStringAnsi::Sprintf(TempArray, "[Callstack] %02d 0x%08x ", CurrentCallDepth, (uint32) ProgramCounter);
}
LinuxStackWalkHelpers::AppendToString(HumanReadableString, HumanReadableStringSize, Context, TempArray);
// Get filename.
{
const char * FunctionName = LinuxStackWalkHelpers::GetFunctionName(Context, CurrentCallDepth);
if (FunctionName)
{
LinuxStackWalkHelpers::AppendToString(HumanReadableString, HumanReadableStringSize, Context, FunctionName);
}
// try to add source file and line number, too
FLinuxCrashContext* LinuxContext = static_cast< FLinuxCrashContext* >( Context );
if (LinuxContext)
{
const char * SourceFilename = NULL;
int LineNumber;
if (LinuxContext->GetInfoForAddress(reinterpret_cast< void* >( ProgramCounter ), NULL, &SourceFilename, &LineNumber) && FunctionName != NULL)
{
FCStringAnsi::Sprintf(TempArray, " [%s, line %d]", SourceFilename, LineNumber);
LinuxStackWalkHelpers::AppendToString(HumanReadableString, HumanReadableStringSize, Context, TempArray);
FCStringAnsi::Sprintf(TempArray, " [%s:%d]", SourceFilename, LineNumber);
// if we were able to find info for this line, it means it's in our code
// append program name (strong assumption of monolithic build here!)
FCStringAnsi::Strcat(LinuxContext->MinidumpCallstackInfo, ARRAY_COUNT( LinuxContext->MinidumpCallstackInfo ) - 1, TCHAR_TO_ANSI(*FApp::GetName()));
FCStringAnsi::Strcat(LinuxContext->MinidumpCallstackInfo, ARRAY_COUNT( LinuxContext->MinidumpCallstackInfo ) - 1, "!");
LinuxStackWalkHelpers::AppendFunctionNameIfAny(*LinuxContext, FunctionName, ProgramCounter);
FCStringAnsi::Strcat(LinuxContext->MinidumpCallstackInfo, ARRAY_COUNT( LinuxContext->MinidumpCallstackInfo ) - 1, TempArray);
}
else
{
// if we were NOT able to find info for this line, it means it's something else
FCStringAnsi::Strcat(LinuxContext->MinidumpCallstackInfo, ARRAY_COUNT( LinuxContext->MinidumpCallstackInfo ) - 1, "Unknown!");
LinuxStackWalkHelpers::AppendFunctionNameIfAny(*LinuxContext, FunctionName, ProgramCounter);
}
FCStringAnsi::Strcat(LinuxContext->MinidumpCallstackInfo, ARRAY_COUNT( LinuxContext->MinidumpCallstackInfo ) - 1, "\r\n"); // this one always uses Windows line terminators
}
}
}
return true;
}
return true;
}
/**
* Generates information for crash reporter
*/
void DLLEXPORT GenerateCrashInfoAndLaunchReporter(const FLinuxCrashContext & Context)
{
// do not report crashes for tools (particularly for crash reporter itself)
#if !IS_PROGRAM
// create a crash-specific directory
FString CrashInfoFolder = FString::Printf(TEXT("crashinfo-%s-pid-%d-%s-%s"), FApp::GetGameName(), getpid(),
*FDateTime::Now().ToString(), *FGuid::NewGuid().ToString());
FString CrashInfoAbsolute = FPaths::ConvertRelativePathToFull(CrashInfoFolder);
if (IFileManager::Get().MakeDirectory(*CrashInfoFolder))
{
// generate "minidump"
Context.GenerateReport(FPaths::Combine(*CrashInfoFolder, TEXT("diagnostics.txt")));
// generate "WER"
GenerateWindowsErrorReport(FPaths::Combine(*CrashInfoFolder, TEXT("wermeta.xml")));
// generate "minidump" (just >1 byte)
GenerateMinidump(FPaths::Combine(*CrashInfoFolder, TEXT("minidump.dmp")));
// Introduces a new runtime crash context. Will replace all Windows related crash reporting.
//FCStringAnsi::Strncpy(FilePath, CrashInfoFolder, PATH_MAX);
//FCStringAnsi::Strcat(FilePath, PATH_MAX, "/" );
//FCStringAnsi::Strcat(FilePath, PATH_MAX, FGenericCrashContext::CrashContextRuntimeXMLNameA );
//SerializeAsXML( FilePath ); @todo uncomment after verification
// copy log
FString LogSrcAbsolute = FPlatformOutputDevices::GetAbsoluteLogFilename();
FString LogDstAbsolute = FPaths::Combine(*CrashInfoAbsolute, *FPaths::GetCleanFilename(LogSrcAbsolute));
FPaths::NormalizeDirectoryName(LogDstAbsolute);
static_cast<void>(IFileManager::Get().Copy(*LogDstAbsolute, *LogSrcAbsolute)); // best effort, so don't care about result: couldn't copy -> tough, no log
// try launching the tool and wait for its exit, if at all
const TCHAR * RelativePathToCrashReporter = TEXT("../../../Engine/Binaries/Linux/CrashReportClient"); // FIXME: painfully hard-coded
if (!FPaths::FileExists(RelativePathToCrashReporter))
{
RelativePathToCrashReporter = TEXT("../../../engine/binaries/linux/crashreportclient"); // FIXME: even more painfully hard-coded
}
// show on the console
printf("Starting %s\n", StringCast<ANSICHAR>(RelativePathToCrashReporter).Get());
FProcHandle RunningProc = FPlatformProcess::CreateProc(RelativePathToCrashReporter, *(CrashInfoAbsolute + TEXT("/")), true, false, false, NULL, 0, NULL, NULL);
if (FPlatformProcess::IsProcRunning(RunningProc))
{
// do not wait indefinitely
double kTimeOut = 3 * 60.0;
double StartSeconds = FPlatformTime::Seconds();
for(;;)
{
if (!FPlatformProcess::IsProcRunning(RunningProc))
{
break;
}
if (FPlatformTime::Seconds() - StartSeconds > kTimeOut)
{
break;
}
FPlatformProcess::Sleep(1.0f);
};
}
}
#endif
FPlatformMisc::RequestExit(true);
}