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