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| // Catching floating-point-exceptions (and other signals)
@include <signal.h>
@include <unistd.h>
static int gdb()
{
if (last_point.level >= 0) {
debug (last_point);
fputc ('\n', stderr);
fflush (stderr);
}
char command[80];
sprintf (command, "exec xterm -e 'gdb -p %d' & xterm -e 'gnuplot plot -'",
getpid());
return system (command);
}
static void caught_abort (int sig)
{
fprintf (stderr, "Caught signal %d (Aborted)\n", sig);
gdb();
}
static void caught_fpe (int sig)
{
fprintf (stderr, "Caught signal %d (Floating Point Exception)\n", sig);
gdb();
exit (1);
}
static void caught_segfault (int sig)
{
fprintf (stderr, "Caught signal %d (Segmentation Fault)\n", sig);
gdb();
exit (2);
}
void catch_fpe (void)
{
struct sigaction act;
act.sa_handler = caught_fpe;
sigemptyset (&act.sa_mask);
act.sa_flags = 0;
last_point.level = -1;
sigaction (8, &act, NULL); // FPE
act.sa_handler = caught_segfault;
sigaction (11, &act, NULL); // Segfault
act.sa_handler = caught_abort;
act.sa_flags = SA_RESETHAND;
sigaction (6, &act, NULL); // Abort
}
|
