debugging/02_day/valgrind/valgrind-3.11.0/memcheck/tests/sigkill.c

#include <errno.h>
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>

static void
abend (int sig)
{
  printf ("Abended on signal %d\n", sig);
  exit (2);
}

int
main (void)
{
  struct sigaction  sa;

  int i;
  int rc;
  for (i = 1; i <= 65; i++) {
     // Skip signals 32 and 33, since these are used by LinuxThreads. Some
     // glibc versions do not invoke the sigaction system call for these
     // signals.
     // skip signals 63 and 64: some systems say "warning, ignored attempt
     // to catch 32 because it's used internally by Valgrind", others say
     // "invalid argument".
     if (i == 32 || i == 33 || i == 63 || i == 64) {
        continue;       
     }                  // different systems
     sa.sa_flags   = 0;
     sigemptyset( &sa.sa_mask );
     sa.sa_handler = abend;
     fprintf(stderr,"setting signal %d: ", i);
     rc = sigaction (i /*SIGKILL*/, &sa, NULL);
     if (rc) perror ("");
     else fprintf(stderr,"Success\n");
     fprintf(stderr,"getting signal %d: ", i);
     rc = sigaction (i /*SIGKILL*/, NULL, &sa);
     if (rc) perror ("");
     else fprintf(stderr,"Success\n");
     fprintf(stderr,"\n");
  }
  return 0;
}