root/orte/test/system/pspawn.c

DEFINITIONS

1. main

   1 /* -*- C -*-
   2  *
   3  * $HEADER$
   4  *
   5  * The most basic of MPI applications
   6  */
   7 
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <errno.h>
  12 #include <spawn.h>
  13 
  14 #include "opal/util/argv.h"
  15 
  16 int main(int argc, char* argv[])
  17 {
  18     int rc;
  19     char **pargv = NULL;
  20     pid_t pid;
  21     posix_spawn_file_actions_t factions;
  22     posix_spawnattr_t attrs;
  23 
  24     rc = posix_spawnattr_init(&attrs);
  25     if (0 != rc) {
  26         fprintf(stderr, "ERROR INIT ATTRS: %d\n", errno);
  27         exit(1);
  28     }
  29 
  30     rc = posix_spawn_file_actions_init(&factions);
  31     if (0 != rc) {
  32         fprintf(stderr, "ERROR INIT FACTIONS: %d\n", errno);
  33         exit(1);
  34     }
  35     posix_spawn_file_actions_addclose(&factions, fileno(stdin));
  36 
  37     opal_argv_append_nosize(&pargv, "hostname");
  38 
  39     rc = posix_spawn(&pid, "/usr/bin/hostname", NULL, NULL, pargv, NULL);
  40     posix_spawn_file_actions_destroy(&factions);
  41     posix_spawnattr_destroy(&attrs);
  42 
  43     sleep(1);
  44     return 0;
  45 }