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  • Linux 多线程按照线程顺序打印字符

     1 #include <stdio.h>
     2 #include <pthread.h>
     3 #include <unistd.h>
     4 
     5 int num = 0;
     6 pthread_mutex_t mutex_lock = PTHREAD_MUTEX_INITIALIZER;
     7 pthread_cond_t cond_ready = PTHREAD_COND_INITIALIZER;
     8 
     9 
    10 void *output_chara(void *arg)
    11 {
    12     int i;
    13     int cond_num = (int) arg;
    14 
    15     for (i = 0; i < 10; i++){
    16         pthread_mutex_lock(&mutex_lock);
    17         while (num != cond_num){
    18             pthread_cond_wait(&cond_ready, &mutex_lock);
    19         }
    20 
    21         printf("%c", 'A' + cond_num);
    22 
    23         num = (num + 1) % 3;
    24 
    25         pthread_mutex_unlock(&mutex_lock);
    26         pthread_cond_broadcast(&cond_ready);
    27     }
    28 }
    29 
    30 int main()
    31 {
    32     int i;
    33     pthread_t tid[3];
    34 
    35     for (i = 0; i < 3; i++){
    36         pthread_create(&tid[i], NULL, output_chara, (void *)i);
    37     }
    38 
    39     for (i = 0; i < 3; i++){
    40         pthread_join(tid[i], NULL);
    41     }
    42 
    43     return 0;
    44 }

    output:

    ABCABCABCABCABCABCABCABCABCABC
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  • 原文地址:https://www.cnblogs.com/wanpengcoder/p/5344726.html
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