Created
August 26, 2019 07:58
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pthread condition broadcast
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#include <stdio.h> | |
#include <pthread.h> | |
#include <unistd.h> | |
pthread_cond_t cond; | |
pthread_mutex_t lock; | |
void *t0(void *param) | |
{ | |
pthread_mutex_lock(&lock); | |
pthread_cond_wait(&cond, &lock); | |
printf("t0 ready\n"); | |
pthread_mutex_unlock(&lock); | |
} | |
void *t1(void *param) | |
{ | |
pthread_mutex_lock(&lock); | |
pthread_cond_wait(&cond, &lock); | |
printf("t1 ready\n"); | |
pthread_mutex_unlock(&lock); | |
} | |
void *t2(void *param) | |
{ | |
pthread_mutex_lock(&lock); | |
pthread_cond_wait(&cond, &lock); | |
printf("t2 ready\n"); | |
pthread_mutex_unlock(&lock); | |
} | |
int main(void) | |
{ | |
pthread_t t[3]; | |
pthread_cond_init(&cond, NULL); | |
pthread_mutex_init(&lock, NULL); | |
pthread_create(&t[0], NULL, t0, NULL); | |
pthread_create(&t[1], NULL, t1, NULL); | |
pthread_create(&t[2], NULL, t2, NULL); | |
usleep(1000); // Waiting for sub thread | |
pthread_cond_broadcast(&cond); | |
pthread_join(t[0], NULL); | |
pthread_join(t[1], NULL); | |
pthread_join(t[2], NULL); | |
pthread_cond_destroy(&cond); | |
pthread_mutex_destroy(&lock); | |
} |
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