File: fork.c

package info (click to toggle)
valgrind 1%3A3.14.0-3
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 156,980 kB
  • sloc: ansic: 728,128; exp: 26,134; xml: 22,268; cpp: 7,638; asm: 7,312; makefile: 6,102; perl: 5,910; sh: 5,717
file content (24 lines) | stat: -rw-r--r-- 481 bytes parent folder | download | duplicates (13) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 

#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <stdio.h>

int main(void)
{
  pid_t pid;

  pid = fork ();

  /* Sometimes child goes first (non-zero), sometimes parent (zero).  This
     printing means we can detect if we correctly get a zero result and a
     non-zero result (--> three 'X's printed), but the output doesn't depend
     on the order. */

  printf("%s", pid==0 ? "X" : "XX");

  if (pid != 0)
     waitpid(pid, NULL, 0);

  return 0;
}