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118 lines
4.6 KiB
118 lines
4.6 KiB
/**************************************************************************** |
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* include/sys/wait.h |
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* |
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* Copyright (C) 2011 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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#ifndef __INCLUDE_SYS_WAIT_H |
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#define __INCLUDE_SYS_WAIT_H |
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/**************************************************************************** |
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* Included Files |
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****************************************************************************/ |
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#include <sys/types.h> |
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#include <signal.h> |
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#ifdef CONFIG_SCHED_WAITPID |
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/**************************************************************************** |
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* Pre-Processor Definitions |
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****************************************************************************/ |
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/* The following are provided for analysis of returned status values. |
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* Encoded is as follows as 2 bytes of info(MS) then two bytes of code (LS). |
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* Code: |
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* 0 - Child has exited, info is the exit code. |
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* Other values - Not implemented |
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*/ |
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#define WEXITSTATUS(s) (((s) >> 8) & 0xff)/* Return exit status */ |
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#define WIFEXITED(s) (((s) & 0xff) == 0) /* True: Child exited normally */ |
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#define WIFCONTINUED(s) (false) /* True: Child has been continued */ |
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#define WIFSIGNALED(s) (false) /* True: Child exited due to uncaught signal */ |
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#define WIFSTOPPED(s) (false) /* True: Child is currently stopped */ |
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#define WSTOPSIG(s) (false) /* Return signal number that caused process to stop */ |
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#define WTERMSIG(s) (false) /* Return signal number that caused process to terminate */ |
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/* The following symbolic constants are possible values for the options |
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* argument to waitpi(1) (1) and/or waitid() (2), |
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*/ |
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#define WCONTINUED (1 << 0) /* Status for child that has been continued (1)(2) */ |
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#define WNOHANG (1 << 1) /* Do not wait if status not available (1) */ |
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#define WUNTRACED (1 << 2) /* Report status of stopped child process (1) */ |
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#define WEXITED (1 << 3) /* Wait for processes that have exited (2) */ |
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#define WSTOPPED (1 << 4) /* Status for child stopped on signal (2) */ |
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#define WNOHANG (1 << 5) /* Return immediately if there are no children (2) */ |
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#define WNOWAIT (1 << 6) /* Keep the process in a waitable state (2) */ |
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/**************************************************************************** |
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* Public Type Definitions |
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****************************************************************************/ |
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#ifndef __ASSEMBLY__ |
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enum idtype_e |
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{ |
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P_PID = 1, |
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P_GID = 2, |
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P_ALL = 3 |
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}; |
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typedef enum idtype_e idtype_t; |
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/**************************************************************************** |
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* Public Function Prototypes |
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****************************************************************************/ |
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#undef EXTERN |
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#if defined(__cplusplus) |
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#define EXTERN extern "C" |
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extern "C" { |
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#else |
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#define EXTERN extern |
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#endif |
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EXTERN pid_t wait(int *stat_loc); |
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EXTERN int waitid(idtype_t idtype, id_t id, siginfo_t *siginfo, int options); |
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EXTERN pid_t waitpid(pid_t pid, int *stat_loc, int options); |
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#undef EXTERN |
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#if defined(__cplusplus) |
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} |
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#endif |
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#endif /* __ASSEMBLY__ */ |
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#endif /* CONFIG_SCHED_WAITPID */ |
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#endif /* __INCLUDE_SYS_WAIT_H */
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