glibc/support/process_state.h

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/* Wait for process state.
Copyright (C) 2020-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef SUPPORT_PROCESS_STATE_H
#define SUPPORT_PROCESS_STATE_H
#include <sys/types.h>
enum support_process_state
{
support_process_state_running = 0x01, /* R (running). */
support_process_state_sleeping = 0x02, /* S (sleeping). */
support_process_state_disk_sleep = 0x04, /* D (disk sleep). */
support_process_state_stopped = 0x08, /* T (stopped). */
support_process_state_tracing_stop = 0x10, /* t (tracing stop). */
support_process_state_dead = 0x20, /* X (dead). */
support_process_state_zombie = 0x40, /* Z (zombie). */
support_process_state_parked = 0x80, /* P (parked). */
};
/* Wait for process PID to reach state STATE. It can be a combination of
multiple possible states ('process_state_running | process_state_sleeping')
where the function return when any of these state are observed.
For an invalid state not represented by SUPPORT_PROCESS_STATE, it fallbacks
to a 2 second sleep. */
void support_process_state_wait (pid_t pid, enum support_process_state state);
#endif