bool PCEventHandler::isValidRTSignal(int signal, PCEventHandler::RTBreakpointVal breakpointVal,
Dyninst::Address arg1, int status)
{
if(signal == EXCEPTION_BREAKPOINT)
{
if( breakpointVal == NormalRTBreakpoint ) {
if( (status != DSE_forkExit) || (arg1 != 0) ) return true;
proccontrol_printf("%s[%d]: child received signal %d\n",
FILE__, __LINE__, EXCEPTION_BREAKPOINT);
} else if( breakpointVal == SoftRTBreakpoint ) {
if( status == DSE_forkExit ) {
if( arg1 == 0 ) return true;
proccontrol_printf("%s[%d]: parent process received SIGSTOP\n",
FILE__, __LINE__);
}else{
proccontrol_printf("%s[%d]: SIGSTOP wasn't due to fork exit\n",
FILE__, __LINE__);
}
} else {
proccontrol_printf("%s[%d]: mismatch in signal for breakpoint type\n",
FILE__, __LINE__);
}
} else {
proccontrol_printf("%s[%d]: signal wasn't sent by RT library\n",
FILE__, __LINE__);
}
return false;
}
/*
* BPatch_thread::getCallStack
*
* Returns information about the frames currently on the thread's stack.
*
* stack The vector to fill with the stack trace information.
*/
bool BPatch_thread::getCallStack(BPatch_Vector<BPatch_frame>& stack)
{
pdvector<Frame> stackWalk;
if (!llthread->walkStack(stackWalk) ) {
proccontrol_printf("%s[%d]: failed to perform stackwalk on thread %d\n",
FILE__, __LINE__, llthread->getLWP());
return false;
}
for (unsigned int i = 0; i < stackWalk.size(); i++) {
bool isSignalFrame = false;
bool isInstrumentation = false;
BPatch_point *point = NULL;
Frame frame = stackWalk[i];
instPoint *iP = NULL;
isSignalFrame = frame.isSignalFrame();
isInstrumentation = frame.isInstrumentation();
if (isInstrumentation)
{
if (NULL != (iP = frame.getPoint()))
{
point = proc->findOrCreateBPPoint(NULL, iP, BPatch_point::convertInstPointType_t(iP->type()));
}
if (!point)
{
isInstrumentation = false;
}
}
stack.push_back(BPatch_frame(this,
(void *)frame.getPC(),
(void *)frame.getFP(),
isSignalFrame,
isInstrumentation,
point));
}
return true;
}
