46 lines
1023 B
C
46 lines
1023 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later
|
|
* Copyright (c) 2015-2016 Cyril Hrubis <chrubis@suse.cz>
|
|
*/
|
|
|
|
#ifndef TST_PID_H__
|
|
#define TST_PID_H__
|
|
|
|
#include <sys/types.h>
|
|
|
|
/*
|
|
* Get a pid value not used by the OS
|
|
*/
|
|
pid_t tst_get_unused_pid_(void (*cleanup_fn)(void));
|
|
|
|
/*
|
|
* Returns number of free pids by subtraction of the number of pids
|
|
* currently used ('ps -eT') from maximum number of processes.
|
|
* The limit of processes come from kernel pid_max and cgroup session limits
|
|
* (e.g. configured by systemd user.slice).
|
|
*/
|
|
int tst_get_free_pids_(void (*cleanup_fn)(void));
|
|
|
|
#ifdef TST_TEST_H__
|
|
static inline pid_t tst_get_unused_pid(void)
|
|
{
|
|
return tst_get_unused_pid_(NULL);
|
|
}
|
|
|
|
static inline int tst_get_free_pids(void)
|
|
{
|
|
return tst_get_free_pids_(NULL);
|
|
}
|
|
#else
|
|
static inline pid_t tst_get_unused_pid(void (*cleanup_fn)(void))
|
|
{
|
|
return tst_get_unused_pid_(cleanup_fn);
|
|
}
|
|
|
|
static inline int tst_get_free_pids(void (*cleanup_fn)(void))
|
|
{
|
|
return tst_get_free_pids_(cleanup_fn);
|
|
}
|
|
#endif
|
|
|
|
#endif /* TST_PID_H__ */
|