| 1 | /* Once-only control (native Windows implementation). |
| 2 | Copyright (C) 2005-2020 Free Software Foundation, Inc. |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU General Public License as published by |
| 6 | the Free Software Foundation; either version 3, or (at your option) |
| 7 | any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, see <https://www.gnu.org/licenses/>. */ |
| 16 | |
| 17 | /* Written by Bruno Haible <bruno@clisp.org>, 2005. |
| 18 | Based on GCC's gthr-win32.h. */ |
| 19 | |
| 20 | #ifndef _WINDOWS_ONCE_H |
| 21 | #define _WINDOWS_ONCE_H |
| 22 | |
| 23 | #define WIN32_LEAN_AND_MEAN /* avoid including junk */ |
| 24 | #include <windows.h> |
| 25 | |
| 26 | typedef struct |
| 27 | { |
| 28 | volatile int inited; |
| 29 | volatile LONG started; |
| 30 | CRITICAL_SECTION lock; |
| 31 | } |
| 32 | glwthread_once_t; |
| 33 | |
| 34 | #define GLWTHREAD_ONCE_INIT { -1, -1 } |
| 35 | |
| 36 | #ifdef __cplusplus |
| 37 | extern "C" { |
| 38 | #endif |
| 39 | |
| 40 | extern void glwthread_once (glwthread_once_t *once_control, |
| 41 | void (*initfunction) (void)); |
| 42 | |
| 43 | #ifdef __cplusplus |
| 44 | } |
| 45 | #endif |
| 46 | |
| 47 | #endif /* _WINDOWS_ONCE_H */ |