| [449] | 1 | /* |
|---|
| 2 | * wait.h - User level <wait> library definition. |
|---|
| 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 _WAIT_H_ |
|---|
| 25 | #define _WAIT_H_ |
|---|
| 26 | |
|---|
| 27 | /***************************************************************************************** |
|---|
| 28 | * This file defines the user level, memory <wait> library. |
|---|
| 29 | * All these functions make a system call to access the kernel structures. |
|---|
| 30 | * The user/kernel shared structures and mnemonics are defined in |
|---|
| 31 | * the <kernel/syscalls/shared_include/shared_wait.h> file. |
|---|
| 32 | ****************************************************************************************/ |
|---|
| 33 | |
|---|
| 34 | #include <shared_wait.h> |
|---|
| 35 | |
|---|
| 36 | /***************************************************************************************** |
|---|
| 37 | * This blocking function returns only when one child process of the calling process |
|---|
| 38 | * changes state (from RUNNING to STOPPED / EXITED / KILLED). It returns the terminating |
|---|
| 39 | * child process PID, and set in the <status> buffer the new child process state. |
|---|
| 40 | ***************************************************************************************** |
|---|
| 41 | * @ status : [out] terminating child process state. |
|---|
| 42 | * @ returns terminating child process pid. |
|---|
| 43 | ****************************************************************************************/ |
|---|
| 44 | int wait( int * status ); |
|---|
| 45 | |
|---|
| 46 | #endif |
|---|
| 47 | |
|---|
