初始化互斥锁
int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr);
上锁
int pthread_mutex_lock(pthread_mutex_t *mutex);
解锁
int pthread_mutex_unlock(pthread_mutex_t * mutex);
销毁互斥锁
int pthread_mutex_destroy(pthread_mutex_t *mutex);
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
pthread_mutex_t mutex;
// print
void printer(char *str)
{
pthread_mutex_lock(&mutex);
while(*str!='\0')
{
putchar(*str);
fflush(stdout);
str++;
sleep(1);
}
printf("\n");
pthread_mutex_unlock(&mutex);
}
// thread one
void *thread_fun_1(void *arg)
{
char *str = "hello";
printer(str);
}
// thread two
void *thread_fun_2(void *arg)
{
char *str = "world";
printer(str);
}
int main(void)
{
pthread_t tid1, tid2;
int err1, err2;
pthread_mutex_init(&mutex, NULL);
// creat two thread
err1 = pthread_create(&tid1, NULL, thread_fun_1, NULL);
err2 = pthread_create(&tid2, NULL, thread_fun_2, NULL);
// wait thread end
pthread_join(tid1, NULL);
pthread_join(tid2, NULL);
pthread_mutex_destroy(&mutex);
return 0;
}