blob: 1bbc72440d49b6f45b66191be2785521639d789b (
plain) (
blame)
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
|
#ifndef _SIGNAL_H_
#define _SIGNAL_H_
#define SIGNAL_OK (0)
#define SIGNAL_TIMEOUT (-2)
#define SIGNAL_ERROR (-1)
/**
* Create a new signal fd (eventfd), nonblocking.
* @return >= 0 on success, which is the fd; < 0 on error
*/
int signal_new();
/**
* Trigger the given signal, so a wait or clear call will succeed.
* @return SIGNAL_OK on success, SIGNAL_ERROR on error
*/
int signal_call(int signalFd);
/**
* Wait for given signal, with an optional timeout.
* If timeout == 0, just poll once.
* If timeout < 0, wait forever.
* @return > 0 telling how many times the signal was called,
* SIGNAL_TIMEOUT if the timeout was reached,
* SIGNAL_ERROR if some error occured
*/
int signal_wait(int signalFd, int timeoutMs);
/**
* Clears any pending signals on this signal fd.
* @return number of signals that were pending,
* SIGNAL_ERROR if some error occured
*/
int signal_clear(int signalFd);
/**
* Close the given signal.
*/
void signal_close(int signalFd);
#endif
|
