42 lines
938 B
C
42 lines
938 B
C
#include <stdio.h>
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#include <pthread.h>
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#include <unistd.h>
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// 静态初始化互斥锁
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// pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
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// 动态初始化锁-定义锁
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pthread_mutex_t mutex;
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void *printer(void *data)
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{
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char *msg = (char *)data;
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pthread_mutex_lock(&mutex); // 申请上锁，可能阻塞
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while (*msg)
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{
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printf("%c", *msg++);
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fflush(stdout);
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usleep(200 * 1000);
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}
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pthread_mutex_unlock(&mutex); // 不解锁，就会发生死锁
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return NULL;
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}
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int main(int argc, char const **argv)
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{
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// 动态初始化锁-初始化
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pthread_mutex_init(&mutex, NULL);
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pthread_t tid1, tid2;
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pthread_create(&tid1, NULL, printer, "disen666\n");
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pthread_create(&tid2, NULL, printer, "lucy888\n");
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pthread_join(tid1, NULL);
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pthread_join(tid2, NULL);
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printf("\n---over---\n");
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// 销毁互斥锁
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pthread_mutex_destroy(&mutex);
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return 0;
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} |