linux 线程 数据结构

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

pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
int shared_data = 0;

void* thread_func(void* arg) {
    pthread_mutex_lock(&mutex);
    shared_data++;
    pthread_mutex_unlock(&mutex);
    return NULL;
}

int main() {
    pthread_t threads[10];
    for (int i = 0; i < 10; i++) {
        pthread_create(&threads[i], NULL, thread_func, NULL);
    }
    for (int i = 0; i < 10; i++) {
        pthread_join(threads[i], NULL);
    }
    printf("Shared data: %d\n", shared_data);
    return 0;
}

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

pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t mutex2 = PTHREAD_MUTEX_INITIALIZER;

void* thread1_func(void* arg) {
    pthread_mutex_lock(&mutex1);
    sleep(1); // 模拟工作
    if (pthread_mutex_trylock(&mutex2) == 0) {
        pthread_mutex_unlock(&mutex2);
        pthread_mutex_unlock(&mutex1);
        return NULL;
    }
    pthread_mutex_unlock(&mutex1);
    return NULL;
}

void* thread2_func(void* arg) {
    pthread_mutex_lock(&mutex2);
    sleep(1); // 模拟工作
    if (pthread_mutex_trylock(&mutex1) == 0) {
        pthread_mutex_unlock(&mutex1);
        pthread_mutex_unlock(&mutex2);
        return NULL;
    }
    pthread_mutex_unlock(&mutex2);
    return NULL;
}

int main() {
    pthread_t thread1, thread2;
    pthread_create(&thread1, NULL, thread1_func, NULL);
    pthread_create(&thread2, NULL, thread2_func, NULL);
    pthread_join(thread1, NULL);
    pthread_join(thread2, NULL);
    return 0;
}