ParserException(const Exception& ex,
int aScriptLine, int aScriptPos,
const char* aFile, int aLine)
: Exception(aFile, aLine),
scriptLine(aScriptLine),
scriptPos(aScriptPos)
{
description = ex.toString();
}
extern "C" void segfaulth(int sig,siginfo_t *siginfo, void *secret)
{
///c++ abi: nothing to play with
/*
ucontext_t *uc=(ucontext_t*)secret;
#ifdef __powerpc__
signal.setFaultPosition((void *)uc->uc_mcontext.regs->nip);
#else
# ifdef __mips__
signal.setFaultPosition((void *)( (int) ( uc->uc_mcontext.pc & (0xffffffff) ) ));
# else
signal.setFaultPosition((void *)uc->uc_mcontext.gregs[REG_EIP]);
# endif
#endif
*/
//cerr << signal.getStackTrace();
//cerr << signal.what();
const char* detail_=fault_detail(sig,siginfo);
char detail[1024];
void *faultAddr=NULL;
SegfaultBuffer emergencyBuffer;
SegfaultBuffer *oldBuffer=NULL;
bool stuckCandidate=false;
if ( siginfo ) faultAddr=siginfo->si_addr;
snprintf(detail,1024,"Signal (%d) : %s [%p]",sig,detail_,faultAddr);
fprintf(stderr,"IN RAII SEGFAULT HANDLER, %s\n",detail);fflush(stderr);
if(1){ //code à activer si demangle et throw merdouillent après segfault
Exception e;
std::cerr << e.toString() << "\n";
std::cerr << e.getMessage() << "\n";
e.poorManPrintStackTrace(false);
}
if ( !segfaultBuffer || sig == SIGUSR2 ) {
fprintf(stderr,
sig == SIGUSR2
? "dumping stack\n"
: "segfaultBuffer is NULL (not in raii request)!\n");fflush(stderr);
oldBuffer=segfaultBuffer;
segfaultBuffer=&emergencyBuffer;
stuckCandidate=true;
}
{ // segfaultBuffer is not null, in raii request
switch (sig)
{
case SIGILL:
segfaultBuffer->exception=new IllegalInstruction(detail);
break;
case SIGFPE:
segfaultBuffer->exception=new FloatingPointException(detail);
break;
case SIGSEGV:
segfaultBuffer->exception=new SegmentationFault(detail);
break;
case SIGBUS:
segfaultBuffer->exception=new BusError(detail);
break;
case SIGABRT:
segfaultBuffer->exception=new Abort(detail);
break;
case SIGUSR2:
segfaultBuffer->exception=new DumpStack(detail);
default:
segfaultBuffer->exception=new Signal(detail);
}
if ( !segfaultBuffer->exception )
fprintf(stderr,"UNABLE TO INSTANCIATE EXCEPTION\n");
else {
fprintf(stderr,"EXCEPTION INSTANCIATED, STACKTRACE SIZE IS %d\n",segfaultBuffer->exception->depth);
fflush(stderr);
segfaultBuffer->exception->depth=backtrace(segfaultBuffer->exception->stackTrace,1024);
segfaultBuffer->exception->start=2;
//int i;
/*
//0 -> segfaulth
//1 -> __restore_rt
for ( i=2 ; i < depth ; i++ ) {
segfaultBuffer->exception->stackTrace_.push_back(p[i]);
}
*/
}
fflush(stderr);
segfaultBuffer->signal=sig;
if ( stuckCandidate ) {
segfaultBuffer=oldBuffer; //last state
{
static Mutex serialize_output;
Lock l(serialize_output);
Logger log("raii");
log ("trying to dump stack");
if ( emergencyBuffer.exception ) {
log.error(emergencyBuffer.exception->toString());
std::cerr << emergencyBuffer.exception->getMessage() << "\n";
if ( sig == SIGUSR2 )
emergencyBuffer.exception->printStackTrace();
else
emergencyBuffer.exception->poorManPrintStackTrace();
}
else {
log("exception is null");
}
}
delete emergencyBuffer.exception;
if ( sig == SIGUSR2 ) {
dumpStackFlag=false;
return;
}
//double fault héhé
//apache redémarre pour le coup...
//j'ai pas mieux à proposer. Sinon y'a toujours moyen de
//passer le thread en stuck avec une contruction du type
//do { sleep(5); fprintf(stderr,"bip\n"); } while(true);
//disabling handler for current sig
signal(sig,SIG_DFL);
fprintf(stderr,"Commiting suicide with that weapon %s\n",
fault_detail(sig,siginfo));fflush(stderr);
raise(sig);
}
else {
fprintf(stderr,"LONGJUMPING\n");fflush(stderr);
longjmp(segfaultBuffer->env,sig);
}
}
}
