how to implement the WaitForMultipleObjects in linux

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原文地址： http://www.linuxquestions.org/questions/programming-9/how-to-implement-waitformultipleobjects-in-linux-908553/

#include <stdlib.h>#include <stdio.h>#include <semaphore.h>#include <pthread.h>#include <unistd.h>#include <errno.h>#include <string.h>#define NUM_THREADS (2)sem_t semaphore;void *worker_thread(void *arg) {int i;for (i=0; i<10; ++i) {fprintf(stderr,".");sleep(1);}sem_post(&semaphore);return NULL;}int main(int argc, char* argv[]){pthread_t thread[NUM_THREADS];        int i;sem_init(&semaphore, 0, -1 * NUM_THREADS);        for (i =0; i< NUM_THREADS; ++i) {                 pthread_create(&thread[i],NULL, &worker_thread, NULL);        }if (sem_wait(&semaphore) < 0) {printf("sem_wait failed: %s\n", strerror(errno));return EXIT_FAILURE;}        for (i =0; i< NUM_THREADS; ++i) {       pthread_join(thread[i], NULL);        }        printf("\nAll threads are done now\n");return EXIT_SUCCESS;}