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
|
/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright (C) 2012-2014 Cyril Hrubis chrubis@suse.cz
*/
/*
These functions helps you wait till a process with given pid changes state.
This is for example useful when you need to wait in parent until child
blocks.
*/
#ifndef TST_PROCESS_STATE__
#define TST_PROCESS_STATE__
#include <unistd.h>
/*
* Waits for process state change.
*
* The state is one of the following:
*
* R - process is running
* S - process is sleeping
* D - process sleeping uninterruptibly
* Z - zombie process
* T - process is traced
*/
#ifdef TST_TEST_H__
#define TST_PROCESS_STATE_WAIT(pid, state, msec_timeout) \
tst_process_state_wait(__FILE__, __LINE__, NULL, \
(pid), (state), (msec_timeout))
#else
/*
* The same as above but does not use tst_brkm() interface.
*
* This function is intended to be used from child processes.
*
* Returns zero on success, non-zero on failure.
*/
int tst_process_state_wait2(pid_t pid, const char state);
# define TST_PROCESS_STATE_WAIT(cleanup_fn, pid, state) \
tst_process_state_wait(__FILE__, __LINE__, (cleanup_fn), \
(pid), (state), 0)
#endif
int tst_process_state_wait(const char *file, const int lineno,
void (*cleanup_fn)(void), pid_t pid,
const char state, unsigned int msec_timeout);
#endif /* TST_PROCESS_STATE__ */
|
