support/process_state.h

   1 /* Wait for process state.
   2    Copyright (C) 2020-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef SUPPORT_PROCESS_STATE_H
  20 #define SUPPORT_PROCESS_STATE_H
  21
  22 #include <sys/types.h>
  23
  24 enum support_process_state
  25 {
  26   support_process_state_running      = 0x01,  /* R (running).  */
  27   support_process_state_sleeping     = 0x02,  /* S (sleeping).  */
  28   support_process_state_disk_sleep   = 0x04,  /* D (disk sleep).  */
  29   support_process_state_stopped      = 0x08,  /* T (stopped).  */
  30   support_process_state_tracing_stop = 0x10,  /* t (tracing stop).  */
  31   support_process_state_dead         = 0x20,  /* X (dead).  */
  32   support_process_state_zombie       = 0x40,  /* Z (zombie).  */
  33   support_process_state_parked       = 0x80,  /* P (parked).  */
  34 };
  35
  36 /* Wait for process PID to reach state STATE.  It can be a combination of
  37    multiple possible states ('process_state_running | process_state_sleeping')
  38    where the function return when any of these state are observed.
  39    For an invalid state not represented by SUPPORT_PROCESS_STATE, it fallbacks
  40    to a 2 second sleep.  */
  41 void support_process_state_wait (pid_t pid, enum support_process_state state);
  42
  43 #endif