linux 线程退出 资源回收

void* thread_func(void* arg) {
    // 分配资源
    int* data = (int*)malloc(sizeof(int));
    if (data == NULL) {
        perror("Failed to allocate memory");
        pthread_exit(NULL);
    }

    // 使用资源...

    // 释放资源
    free(data);

    // 退出线程
    pthread_exit(NULL);
}

pthread_t tid;
pthread_create(&tid, NULL, thread_func, NULL);

// 主线程等待子线程结束
pthread_join(tid, NULL);

pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;

void* thread_func(void* arg) {
    pthread_mutex_lock(&mutex);
    // 访问和修改共享数据
    pthread_mutex_unlock(&mutex);

    pthread_exit(NULL);
}

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

void* thread_func(void* arg) {
    int* data = (int*)malloc(sizeof(int));
    if (data == NULL) {
        perror("Failed to allocate memory");
        pthread_exit(NULL);
    }

    *data = 42;
    printf("Thread data: %d\n", *data);

    free(data);
    pthread_exit(NULL);
}

int main() {
    pthread_t tid;
    if (pthread_create(&tid, NULL, thread_func, NULL) != 0) {
        perror("Failed to create thread");
        return 1;
    }

    pthread_join(tid, NULL);
    printf("Main thread exiting\n");

    return 0;
}