root/orte/test/system/sigusr_trap.c

DEFINITIONS

1. sigusr_handler
2. exit_handler
3. main

   1 /* -*- C -*-
   2  *
   3  * $HEADER$
   4  *
   5  * A test to trap user signals
   6  */
   7 #include "orte_config.h"
   8 
   9 #include <stdio.h>
  10 #include <signal.h>
  11 
  12 #include "orte/util/name_fns.h"
  13 #include "orte/util/proc_info.h"
  14 #include "orte/runtime/orte_globals.h"
  15 #include "orte/runtime/runtime.h"
  16 
  17 /* yeah, we know it isn't safe to call fprintf inside signal handlers,
  18  * but this is good enough for this test
  19  */
  20 void sigusr_handler(int signum)
  21 {
  22     switch (signum) {
  23         case SIGUSR1:
  24             fprintf(stderr, "%s Trapped SIGUSR1\n", ORTE_NAME_PRINT(ORTE_PROC_MY_NAME));
  25             break;
  26 
  27         case SIGUSR2:
  28             fprintf(stderr, "%s Trapped SIGUSR2\n", ORTE_NAME_PRINT(ORTE_PROC_MY_NAME));
  29             return;
  30 
  31         case SIGCONT:
  32             fprintf(stderr, "%s Trapped SIGCONT\n", ORTE_NAME_PRINT(ORTE_PROC_MY_NAME));
  33             return;
  34 
  35         default:
  36             fprintf(stderr, "%s Undefined signal %d trapped\n", ORTE_NAME_PRINT(ORTE_PROC_MY_NAME), signum);
  37             return;
  38     }
  39 }
  40 
  41 void exit_handler(int signum)
  42 {
  43     int rc;
  44 
  45     switch (signum) {
  46         case SIGINT:
  47             fprintf(stderr, "%s Trapped SIGINT\n", ORTE_NAME_PRINT(ORTE_PROC_MY_NAME));
  48             break;
  49 
  50         case SIGHUP:
  51             fprintf(stderr, "%s Trapped SIGHUP\n", ORTE_NAME_PRINT(ORTE_PROC_MY_NAME));
  52             break;
  53 
  54         case SIGTERM:
  55             fprintf(stderr, "%s Trapped SIGTERM\n", ORTE_NAME_PRINT(ORTE_PROC_MY_NAME));
  56             break;
  57 
  58         default:
  59             fprintf(stderr, "%s Undefined signal %d trapped\n", ORTE_NAME_PRINT(ORTE_PROC_MY_NAME), signum);
  60             break;
  61     }
  62     return;
  63 
  64     exit(1);
  65 }
  66 
  67 
  68 int main(int argc, char* argv[])
  69 {
  70 
  71     int rc;
  72     int i;
  73     double pi;
  74 
  75     orte_init(&argc, &argv, ORTE_PROC_TOOL);
  76 
  77     if (signal(SIGUSR1, sigusr_handler) == SIG_IGN) {
  78         fprintf(stderr, "Could not setup signal trap for SIGUSR1\n");
  79         exit(1);
  80     }
  81 
  82     if (signal(SIGUSR2, sigusr_handler) == SIG_IGN) {
  83         fprintf(stderr, "Could not setup signal trap for SIGUSR2\n");
  84         exit(1);
  85     }
  86 
  87     if (signal(SIGCONT, sigusr_handler) == SIG_IGN) {
  88         fprintf(stderr, "Could not setup signal trap for SIGUSR2\n");
  89         exit(1);
  90     }
  91 
  92     if (signal(SIGINT, exit_handler) == SIG_IGN) {
  93         fprintf(stderr, "Could not setup signal trap for SIGINT\n");
  94         exit(1);
  95     }
  96 
  97     if (signal(SIGHUP, exit_handler) == SIG_IGN) {
  98         fprintf(stderr, "Could not setup signal trap for SIGHUP\n");
  99         exit(1);
 100     }
 101 
 102     if (signal(SIGTERM, exit_handler) == SIG_IGN) {
 103         fprintf(stderr, "Could not setup signal trap for SIGTERM\n");
 104         exit(1);
 105     }
 106 
 107     i = 0;
 108     while (1) {
 109         i++;
 110         pi = i / 3.14159256;
 111         if (i > 100) i = 0;
 112     }
 113 
 114     return 0;
 115 }