回调函数

设置线程中止时的回调函数

by

pthread版

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <pthread.h>
#include <signal.h>
#include <unistd.h>
 
#define WhThreadHandle pthread_t
#define WH_THREAD_DEF(_proc, _arg) void *_proc(void *_arg)
#define whThreadCreate(_handle, _loop, _param) pthread_create(&_handle, NULL, _loop, _param)
 
void cleanup(void *p)
{
	printf("thread killed.\n");
}
 
WH_THREAD_DEF(func1, arg)
{
	int oldState;
	pthread_cleanup_push(cleanup, NULL);
 
	pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &oldState);
	while (1)
		sleep(1); // here must call sleep, or else cleanup will not be called.
	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &oldState);
 
	pthread_cleanup_pop(0); // here if want cleanup called, set param to non-zero.
	return NULL;
}
 
WhThreadHandle threadHandle;
 
void onSignal(int sign)
{
    switch (sign)
    {
    case SIGINT:
	pthread_cancel(threadHandle);
        printf("process ctrl+c pressed.\n");
        break;
    }
}
 
int main()
{
	signal(SIGINT, onSignal);
 
	whThreadCreate(threadHandle, func1, 0);
 
	while (1)
		;
	return 1;
}