tools/mono-hang-watchdog/mono-hang-watchdog.c

   1 /* Given a external process' id as argument, the program waits for a set timeout then attempts to abort that process */
   2 /* Used by the Mono runtime's crash reporting. */
   3
   4 #include <stdlib.h>
   5 #include <stdio.h>
   6 #include <stdint.h>
   7 #include <errno.h>
   8 #include <unistd.h>
   9
  10 #include "config.h"
  11
  12 #ifdef HAVE_SIGNAL_H
  13 #include <signal.h>
  14 #endif
  15
  16 #define TIMEOUT 30
  17
  18 static char* program_name;
  19 void program_exit (int exit_code, const char* message);
  20
  21 int main (int argc, char* argv[])
  22 {
  23     program_name = argv [0];
  24     if (argc != 2)
  25         program_exit (1, "Please provide one argument (pid)");
  26     errno = 0;
  27     pid_t pid = (pid_t)strtoul (argv [1], NULL, 10);
  28     if (errno)
  29         program_exit (2, "Invalid pid");
  30
  31     sleep (TIMEOUT);
  32
  33     /* if we survived the timeout, we consider the Mono process as hung */
  34
  35 #ifndef HAVE_KILL
  36     /* just inform the user */
  37     printf ("Mono process with pid %llu appears to be hung", (uint64_t)pid);
  38     return 0;
  39 #else
  40     printf ("Mono process hang detected, sending kill signal to pid %llu\n", (uint64_t)pid);
  41     return kill (pid, SIGKILL);
  42 #endif
  43 }
  44
  45 void program_exit (int exit_code, const char* message)
  46 {
  47     if (message)
  48         printf ("%s\n", message);
  49     printf ("Usage: '%s [pid]'\t\t[pid]: The id for the Mono process\n", program_name);
  50     exit (exit_code);
  51 }