c多线程编程实例 linux

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

void* print_hello(void* arg) {
    printf("Hello from thread %ld\n", (long)arg);
    pthread_exit(NULL);
}

int main() {
    pthread_t threads[2];
    int rc;
    long t;

    for(t = 0; t < 2; t++) {
        printf("Main: creating thread %ld\n", t);
        rc = pthread_create(&threads[t], NULL, print_hello, (void*)t);
        if (rc) {
            printf("Error: unable to create thread %d\n", rc);
            exit(-1);
        }
    }

    for(t = 0; t < 2; t++) {
        pthread_join(threads[t], NULL);
    }

    pthread_exit(NULL);
}

gcc -o mythreads mythreads.c -lpthread
./mythreads

pthread_mutex_t mutex;

void* thread_function(void* arg) {
    pthread_mutex_lock(&mutex);
    // 访问共享资源的代码
    pthread_mutex_unlock(&mutex);
    return NULL;
}

int main() {
    pthread_mutex_init(&mutex, NULL);
    // 创建线程...
    pthread_mutex_destroy(&mutex);
    return 0;
}