Join me in a face test.-linux Threading Programming

As described in title:

Write the program to complete the following functions:

1) There is an int type global variable G_flag initial value is 0;

2) Start thread 1 in the mainline call, print "This is Thread1" and set G_flag to 1

3) Start thread 2 in the mainline call, print "This is Thread2" and set G_flag to 2

4) Line program 1 requires thread 2 exit before exiting

5) The main thread exits

when it detects that the G_flag has changed from 1 to 2, or from 2 to 1.

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <pthread.h> #include < Errno.h>int G_flag = 0;pthread_cond_t cond_self_kill;pthread_mutex_t m_kill;pthread_mutex_t m_flag;void *thread_    Child (void *arg) {if (Pthread_mutex_lock (&m_flag)! = 0) {pthread_exit (NULL);}    G_flag = (int) arg;    printf ("This Is thread%d\n", (int) arg); if (Pthread_mutex_unlock (&m_flag)! = 0) {pthread_exit (NULL);} if ((int) arg = = 1) {if (Pthread_cond_wait (&cond_self_kill, &m_kill)! = 0) {Pthread_exi                T (NULL);              } printf ("Thread%d exit\n", (int) arg);        } else {sleep (2);        Pthread_cond_broadcast (&cond_self_kill);      printf ("thread%d exit\n", (int) arg);        }pthread_exit (NULL); }int Main (int argc, char *argv[]) {pthread_t child[2];int ret;pthread_cond_init (&cond_self_kill, NULL);p Thread_    Mutex_init (&m_flag, NULL);p thread_mutex_init (&m_kill, NULL); RET = Pthread_create (&child[1], NULL, Thread_child, (void*) 2); if (ret) {return 1;}    ret = Pthread_create (&child[0], NULL, Thread_child, (void*) 1); if (ret) {return 1;}        if (Pthread_join (child[0], null)! = 0) {pthread_join (child[1], NULL);     return 1;    } pthread_join (Child[1], NULL);    printf ("Main thread exit\n"); return 0;}

Join me in a face test.-linux Threading Programming