| 1 | /* |
|---|
| 2 | * shared_wait.h - Shared macros used by the wait() syscall. |
|---|
| 3 | * |
|---|
| 4 | * Author Alain Greiner (2016,2017,2018) |
|---|
| 5 | * |
|---|
| 6 | * Copyright (c) UPMC Sorbonne Universites |
|---|
| 7 | * |
|---|
| 8 | * This file is part of ALMOS-MKH. |
|---|
| 9 | * |
|---|
| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
|---|
| 11 | * under the terms of the GNU General Public License as published by |
|---|
| 12 | * the Free Software Foundation; version 2.0 of the License. |
|---|
| 13 | * |
|---|
| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
|---|
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|---|
| 17 | * General Public License for more details. |
|---|
| 18 | * |
|---|
| 19 | * You should have received a copy of the GNU General Public License |
|---|
| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
|---|
| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
|---|
| 22 | */ |
|---|
| 23 | |
|---|
| 24 | #ifndef _SHARED_WAIT_H_ |
|---|
| 25 | #define _SHARED_WAIT_H_ |
|---|
| 26 | |
|---|
| 27 | /********************************************************************************************* |
|---|
| 28 | * These macros can be used by the parent process to analyze a child process termination |
|---|
| 29 | * status, as returned by the wait() syscall. |
|---|
| 30 | * The termination state is a 32 bits word: |
|---|
| 31 | * - the 8 LSB bits contain the user defined exit status |
|---|
| 32 | * - the 24 other bits contain the flags defined below |
|---|
| 33 | ********************************************************************************************/ |
|---|
| 34 | |
|---|
| 35 | #define PROCESS_TERM_STOP 0x100 /*! process received a SIGSTOP signal */ |
|---|
| 36 | #define PROCESS_TERM_KILL 0x200 /*! process killed by a SIGKILL signal */ |
|---|
| 37 | #define PROCESS_TERM_EXIT 0x400 /*! process terminated by a sys_exit() */ |
|---|
| 38 | #define PROCESS_TERM_WAIT 0x800 /*! parent process executed a sys_wait() */ |
|---|
| 39 | |
|---|
| 40 | #define WIFEXITED( status ) (status & PROCESS_TERM_EXIT) |
|---|
| 41 | #define WIFSIGNALED( status ) (status & PROCESS_TERM_KILL) |
|---|
| 42 | #define WIFSTOPPED( status ) (status & PROCESS_TERM_STOP) |
|---|
| 43 | #define WEXITSTATUS( status ) (status & 0xFF) |
|---|
| 44 | |
|---|
| 45 | #define WNOHANG -1 // TODO Not implemented in almos-mkh |
|---|
| 46 | |
|---|
| 47 | #endif |
|---|
| 48 | |
|---|
