linux C 線程學習

/*linux tirminal 中輸入vim demo_thread.c, 然後輸入以下代碼：*/#include <pthread.h>#include <stdio.h>#include <sys/time.h>#include <string.h>#define MAX 10//定義兩個線程數組pthread_t thread[2]; //線程值，用於線程鎖pthread_mutex_t mut;//便於觀察線程非同步與同步操作int number=0, i;//線程1調用的方法void *thread1(){        printf ("thread1 : I'm thread 1/n");        for (i = 0; i < MAX; i++)        {                printf("thread1 : number = %d/n",number);                pthread_mutex_lock(&mut);                        number++;                pthread_mutex_unlock(&mut);                sleep(2);        }        printf("thread1 :主函數在等我完成任務嗎？/n");        pthread_exit(NULL);}//線程2調用的方法void *thread2(){        printf("thread2 : I'm thread 2/n");        for (i = 0; i < MAX; i++)        {                printf("thread2 : number = %d/n",number);                //鎖                pthread_mutex_lock(&mut);                        number++;                //解鎖                pthread_mutex_unlock(&mut);                sleep(3);        }        printf("thread2 :主函數在等我完成任務嗎？/n");        pthread_exit(NULL);}//建立線程void thread_create(void){        int temp;        memset(&thread, 0, sizeof(thread));          //comment1        /*建立線程*/        if((temp = pthread_create(&thread[0], NULL, thread1, NULL)) != 0)       //comment2                printf("線程1建立失敗!/n");        else                printf("線程1被建立/n");        if((temp = pthread_create(&thread[1], NULL, thread2, NULL)) != 0)  //comment3                printf("線程2建立失敗");        else                printf("線程2被建立/n");}//等待線程void thread_wait(void){        /*等待線程結束*/        if(thread[0] !=0) {                   //comment4                pthread_join(thread[0],NULL);                printf("線程1已經結束/n");        }        if(thread[1] !=0) {                //comment5                pthread_join(thread[1],NULL);                printf("線程2已經結束/n");        }}int main(){        /*用預設屬性初始化互斥鎖*/        pthread_mutex_init(&mut,NULL);        printf("我是主函數哦，我正在建立線程，呵呵/n");        thread_create();        printf("我是主函數哦，我正在等待線程完成任務阿，呵呵/n");        thread_wait();        return 0;}/*儲存並退出：wq編譯：gcc demo_thread.c -lpthread 運行： ./a.out  */