#ifdef GLOBAL
#include <pthread.h>
#else
#include "pthread.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#define die(str) \
do { \
fprintf(stderr, "**die: %s: errno=%d\n", str, errno); \
exit(1); \
} while (0)
static void *child(void *_arg)
{
char *name = (char *)_arg;
int i;
fprintf(stderr, "child: startup %s\n", name);
for (i = 0; i < 100; i++) {
if (i++ % 10 == 0)
sleep(1);
fprintf(stderr, "child: %s counts i=%d\n", name, i);
}
fprintf(stderr, "child: shutdown %s\n", name);
return _arg;
}
int main(int argc, char *argv[])
{
pthread_attr_t thread_attr;
pthread_t thread[4];
char *rc;
fprintf(stderr, "main: init\n");
fprintf(stderr, "main: initializing attribute object\n");
if (pthread_attr_init(&thread_attr) != 0)
die("pthread_attr_init");
if (pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE) != 0)
die("pthread_attr_setdetachstate");
fprintf(stderr, "main: create thread 1\n");
if (pthread_create(&thread[0], &thread_attr, child, (void *)"foo") != 0)
die("pthread_create");
fprintf(stderr, "main: create thread 2\n");
if (pthread_create(&thread[1], &thread_attr, child, (void *)"bar") != 0)
die("pthread_create");
fprintf(stderr, "main: create thread 3\n");
if (pthread_create(&thread[2], &thread_attr, child, (void *)"baz") != 0)
die("pthread_create");
fprintf(stderr, "main: create thread 4\n");
if (pthread_create(&thread[3], &thread_attr, child, (void *)"quux") != 0)
die("pthread_create");
fprintf(stderr, "main: destroying attribute object\n");
if (pthread_attr_destroy(&thread_attr) != 0)
die("pthread_attr_destroy");
sleep(3);
fprintf(stderr, "main: joining...\n");
if (pthread_join(thread[0], (void **)&rc) != 0)
die("pthread_join");
fprintf(stderr, "main: joined thread: %s\n", rc);
if (pthread_join(thread[1], (void **)&rc) != 0)
die("pthread_join");
fprintf(stderr, "main: joined thread: %s\n", rc);
if (pthread_join(thread[2], (void **)&rc) != 0)
die("pthread_join");
fprintf(stderr, "main: joined thread: %s\n", rc);
if (pthread_join(thread[3], (void **)&rc) != 0)
die("pthread_join");
fprintf(stderr, "main: joined thread: %s\n", rc);
fprintf(stderr, "main: exit\n");
return 0;
}