linux线程的挂起与恢复

#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>

pthread_mutex_t wqy_mutex_pause = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t wqy_cond_pause = PTHREAD_COND_INITIALIZER;

bool wqy_pthread_pause = false;

void wqy_pthread_suspend(void)
{
if (wqy_pthread_pause == false)
{
pthread_mutex_lock( &wqy_mutex_pause );
wqy_pthread_pause = true;
printf("------pthread pause------/n");
pthread_mutex_unlock( &wqy_mutex_pause );
}
else
{
printf("pthread suspend already/n");
}

}

void wqy_pthread_resume(void)
{
if (wqy_pthread_pause == true)
{
pthread_mutex_lock(&wqy_mutex_pause);
wqy_pthread_pause = false;
pthread_cond_broadcast(&wqy_cond_pause);
printf("------pthread resume------/n");
pthread_mutex_unlock(&wqy_mutex_pause);
}
else
{
printf("pthread resume already/n");
}

}

void wqy_pthread_pause_location(void)
{
pthread_mutex_lock(&wqy_mutex_pause);
while(wqy_pthread_pause)
{
pthread_cond_wait(&wqy_cond_pause, &wqy_mutex_pause);
}
pthread_mutex_unlock(&wqy_mutex_pause);
}