函数：
线程：
int pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*start_routine) (void *), void *arg);
int pthread_join(pthread_t thread, void **retval);
void pthread_exit(void *retval);thread 新建线程的id；attr 新建线程的属性
start_routine 线程的入口函数；arg入口函数的参数； retval保存线程返回值
头文件：<pthread.h>
编译必须包含pthread库：gcc -pthread pthread.c -o pthread
返回值：成功：0
失败：错误码
互斥锁：
int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr);
int pthread_mutex_lock(pthread_mutex_t *mutex);
int pthread_mutex_unlock(pthread_mutex_t *mutex);mutex 互斥锁指针； mutexattr属性
头文件：<pthread.h>
返回值：成功：0
失败：错误码
上代码：
#include <stdio.h>
#include <pthread.h>pthread_t thread[2];int number = 0;pthread_mutex_t mut;void worker1()
{printf("I'm worker1\n");for (int i = 0; i < 10; i++){pthread_mutex_lock(&mut);number++;pthread_mutex_unlock(&mut);printf("worker number is%d\n", number);sleep(1);}pthread_exit(NULL);
}void worker2()
{printf("I'm worker2\n");for (int i = 0; i < 10; i++){pthread_mutex_lock(&mut);number++;pthread_mutex_unlock(&mut);printf("worker number is%d\n", number);sleep(1);
}pthread_exit(NULL);
}int main()
{pthread_mutex_init(&mut, NULL);//1、创建工人1线程pthread_create(&thread[0], NULL, worker1, NULL);//2、创建工人2线程pthread_create(&thread[1], NULL, worker2, NULL);//3、等待工人1线程pthread_join(thread[0], NULL);//4、等待工人2线程pthread_join(thread[1], NULL);return 0;
}