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/*
* Copyright (C) 2012-2014 Cyril Hrubis chrubis@suse.cz
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
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) \
tst_process_state_wait(__FILE__, __LINE__, NULL, \
(pid), (state))
#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))
#endif
void tst_process_state_wait(const char *file, const int lineno,
void (*cleanup_fn)(void),
pid_t pid, const char state);
#endif /* TST_PROCESS_STATE__ */
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