示例1：
1 #include <stdio.h>
2 #include <pthread.h>
3
4 void* clean(void* arg)
5 {
6 printf("cleanup:%s\n", (char*)arg);
7 return (void*)0;
8 }
9
10 void* thrd_fn1(void* arg)
11 {
12 printf("thrd_fn1 start...\n");
13 pthread_cleanup_push((void*)clean, "thread1 first handler");
14 pthread_cleanup_push((void*)clean, "thread1 second handle");
15 printf("thread1 push complete\n");
16 if (arg)
17 {
18 return ((void*)1);
19 }
20
21 pthread_cleanup_pop(1);//当push和pop之间的代码有return时，即使pop的参数为1,也不执行push中的清除函数
22 pthread_cleanup_pop(1);
23 return (void*)1;
24 }
25
26 void* thrd_fn2(void* arg)
27 {
28 printf("thrd_fn2 start...\n");
29 pthread_cleanup_push((void*)clean, "thread2 first handler");
30 pthread_cleanup_push((void*)clean, "thread2 second handle");
31 printf("thread2 push complete\n");
32 if (arg)
33 {
34 pthread_exit((void*)2);
35 }
36
37 pthread_cleanup_pop(0);
38 pthread_cleanup_pop(0);
39 return (void*)1;
40 }
41
42 int main(int argc, char** argv)
43 {
44 int nRes = -1;
45 void* pRtVal = 0;
46 pthread_t ptid1,ptid2;
47
48 nRes = pthread_create(&ptid1, NULL, thrd_fn1, (void*)1);
49 if (nRes != 0)
50 {
51 printf("pthread1 creare failed\n");
52 return -1;
53 }
54
55 nRes = pthread_create(&ptid2, NULL, thrd_fn2, (void*)1);
56 if (nRes != 0)
57 {
58 printf("pthread2 create failed\n");
59 return -1;
60 }
61
62 nRes = pthread_join(ptid1, &pRtVal);
63 if (nRes != 0)
64 {
65 printf("pthread_join 1 failed\n");
66 return -1;
67 }
68 printf("pthread1 exit, code is %d\n", (int)pRtVal);
69
70 nRes = pthread_join(ptid2, &pRtVal);
71 if (nRes != 0)
72 {
73 printf("pthread_join 1 failed\n");
74 return -1;
75 }
76 printf("pthread2 exit, code is %d\n", (int)pRtVal);
77
78 printf("test over!!!\n");
79
80 return 0;
81 }
结果：
thrd_fn2 start... thread2 push complete cleanup:thread2 second handler cleanup:thread2 first handler thrd_fn1 start... thread1 push complete pthread1 exit, code is 1 pthread2 exit, code is 2 test over!!!
示例2：
1 #include <stdio.h>
2 #include <pthread.h>
3
4 void* clean(void* arg)
5 {
6 printf("cleanup:%s\n", (char*)arg);
7 return (void*)0;
8 }
9
10 void* thrd_fn1(void* arg)
11 {
12 printf("thrd_fn1 start...\n");
13 pthread_cleanup_push((void*)clean, "thread1 first handler
14 pthread_cleanup_push((void*)clean, "thread1 second handle
15 printf("thread1 push complete\n");
16
17 pthread_cleanup_pop(1);
18 pthread_cleanup_pop(1);
19 return (void*)1;
20 }
21
22 void* thrd_fn2(void* arg)
23 {
24 printf("thrd_fn2 start...\n");
25 pthread_cleanup_push((void*)clean, "thread2 first handler
26 pthread_cleanup_push((void*)clean, "thread2 second handle
27 printf("thread2 push complete\n");
28 if (arg)
29 {
30 pthread_exit((void*)2);
31 }
32
33 pthread_cleanup_pop(0);
34 pthread_cleanup_pop(0);
35 return (void*)1;
36 }
37
38 int main(int argc, char** argv)
39 {
40 int nRes = -1;
41 void* pRtVal = 0;
42 pthread_t ptid1,ptid2;
43
44 nRes = pthread_create(&ptid1, NULL, thrd_fn1, (void*)1);
45 if (nRes != 0)
46 {
47 printf("pthread1 creare failed\n");
48 return -1;
49 }
50
51 nRes = pthread_create(&ptid2, NULL, thrd_fn2, (void*)1);
52 if (nRes != 0)
53 {
54 printf("pthread2 create failed\n");
55 return -1;
56 }
57
58 nRes = pthread_join(ptid1, &pRtVal);
59 if (nRes != 0)
60 {
61 printf("pthread_join 1 failed\n");
62 return -1;
63 }
64 printf("pthread1 exit, code is %d\n", (int)pRtVal);
65
66 nRes = pthread_join(ptid2, &pRtVal);
67 if (nRes != 0)
68 {
69 printf("pthread_join 1 failed\n");
70 return -1;
71 }
72 printf("pthread2 exit, code is %d\n", (int)pRtVal);
73
74 printf("test over!!!\n");
75
76 return 0;
77 }
执行结果：
thrd_fn2 start... thread2 push complete cleanup:thread2 second handler cleanup:thread2 first handler thrd_fn1 start... thread1 push complete cleanup:thread1 second handler cleanup:thread1 first handler pthread1 exit, code is 1 pthread2 exit, code is 2 test over!!!
时间： 2024-08-01 23:54:03