79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright (C) 2012-2014 Cyril Hrubis chrubis@suse.cz
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* Copyright (C) 2021 Xie Ziyao <xieziyao@huawei.com>
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*/
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/*
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* These functions helps you wait till a process with given pid changes state.
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* This is for example useful when you need to wait in parent until child blocks.
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*/
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#ifndef TST_PROCESS_STATE__
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#define TST_PROCESS_STATE__
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#include <unistd.h>
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#ifdef TST_TEST_H__
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/*
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* Waits for process state change.
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*
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* The state is one of the following:
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*
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* R - process is running
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* S - process is sleeping
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* D - process sleeping uninterruptibly
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* Z - zombie process
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* T - process is traced
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*/
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#define TST_PROCESS_STATE_WAIT(pid, state, msec_timeout) \
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tst_process_state_wait(__FILE__, __LINE__, NULL, \
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(pid), (state), (msec_timeout))
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/*
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* Check that a given pid is present on the system
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*/
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#define TST_PROCESS_EXIT_WAIT(pid, msec_timeout) \
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tst_process_exit_wait((pid), (msec_timeout))
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/*
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* Waits for thread state change.
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*
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* The state is one of the following:
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*
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* R - running
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* S - sleeping
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* D - disk sleep
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* T - stopped
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* t - tracing stopped
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* Z - zombie
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* X - dead
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*/
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#define TST_THREAD_STATE_WAIT(tid, state, msec_timeout) \
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tst_thread_state_wait((tid), (state), (msec_timeout))
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int tst_thread_state_wait(pid_t tid, const char state,
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unsigned int msec_timeout);
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#else
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/*
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* The same as above but does not use tst_brkm() interface.
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*
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* This function is intended to be used from child processes.
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*
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* Returns zero on success, non-zero on failure.
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*/
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int tst_process_state_wait2(pid_t pid, const char state);
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#define TST_PROCESS_STATE_WAIT(cleanup_fn, pid, state) \
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tst_process_state_wait(__FILE__, __LINE__, (cleanup_fn), \
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(pid), (state), 0)
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#endif
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int tst_process_state_wait(const char *file, const int lineno,
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void (*cleanup_fn)(void), pid_t pid,
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const char state, unsigned int msec_timeout);
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int tst_process_exit_wait(pid_t pid, unsigned int msec_timeout);
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#endif /* TST_PROCESS_STATE__ */
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