1 /* Compiler options:
2 #notarget: cris*-*-elf
3 #cc: additional_flags=-pthread
4 #output: Starting process a\naaaaaaaaStarting process b\nababbbbbbbbb
5 
6    The output will change depending on the exact syscall sequence per
7    thread, so will change with glibc versions.  Prepare to modify; use
8    the latest glibc.
9 
10    This file is from glibc/linuxthreads, with the difference that the
11    number is 10, not 10000.  */
12 
13 /* Creates two threads, one printing 10000 "a"s, the other printing
14    10000 "b"s.
15    Illustrates: thread creation, thread joining. */
16 
17 #include <stddef.h>
18 #include <stdio.h>
19 #include <unistd.h>
20 #include "pthread.h"
21 
22 static void *
process(void * arg)23 process (void *arg)
24 {
25   int i;
26   fprintf (stderr, "Starting process %s\n", (char *) arg);
27   for (i = 0; i < 10; i++)
28     {
29       write (1, (char *) arg, 1);
30     }
31   return NULL;
32 }
33 
34 int
main(void)35 main (void)
36 {
37   int retcode;
38   pthread_t th_a, th_b;
39   void *retval;
40 
41   retcode = pthread_create (&th_a, NULL, process, (void *) "a");
42   if (retcode != 0)
43     fprintf (stderr, "create a failed %d\n", retcode);
44   retcode = pthread_create (&th_b, NULL, process, (void *) "b");
45   if (retcode != 0)
46     fprintf (stderr, "create b failed %d\n", retcode);
47   retcode = pthread_join (th_a, &retval);
48   if (retcode != 0)
49     fprintf (stderr, "join a failed %d\n", retcode);
50   retcode = pthread_join (th_b, &retval);
51   if (retcode != 0)
52     fprintf (stderr, "join b failed %d\n", retcode);
53   return 0;
54 }
55