linux c threads

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

void* print_odd(void* arg) {
    for (int i = 1; i <= 100; i += 2) {
        printf("Odd: %d\n", i);
    }
    return NULL;
}

void* print_even(void* arg) {
    for (int i = 2; i <= 100; i += 2) {
        printf("Even: %d\n", i);
    }
    return NULL;
}

int main() {
    pthread_t thread_odd, thread_even;

    if (pthread_create(&thread_odd, NULL, print_odd, NULL)) {
        perror("Thread creation failed");
        exit(EXIT_FAILURE);
    }

    if (pthread_create(&thread_even, NULL, print_even, NULL)) {
        perror("Thread creation failed");
        exit(EXIT_FAILURE);
    }

    pthread_join(thread_odd, NULL);
    pthread_join(thread_even, NULL);

    return 0;
}

#include <pthread.h>

pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;

void* safe_increment(void* arg) {
    int* counter = (int*)arg;
    pthread_mutex_lock(&mutex);
    (*counter)++;
    pthread_mutex_unlock(&mutex);
    return NULL;
}

pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t mutex2 = PTHREAD_MUTEX_INITIALIZER;

void* thread_func1(void* arg) {
    pthread_mutex_lock(&mutex1);
    pthread_mutex_lock(&mutex2);
    // 执行操作
    pthread_mutex_unlock(&mutex2);
    pthread_mutex_unlock(&mutex1);
    return NULL;
}

void* thread_func2(void* arg) {
    pthread_mutex_lock(&mutex1); // 确保加锁顺序一致
    pthread_mutex_lock(&mutex2);
    // 执行操作
    pthread_mutex_unlock(&mutex2);
    pthread_mutex_unlock(&mutex1);
    return NULL;
}