1 /* Once-only control (native Windows implementation). 2 Copyright (C) 2005-2021 Free Software Foundation, Inc. 3 4 This file is free software: you can redistribute it and/or modify 5 it under the terms of the GNU Lesser General Public License as 6 published by the Free Software Foundation; either version 2.1 of the 7 License, or (at your option) any later version. 8 9 This file 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 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser 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 */