| /* Spin locks (native Windows implementation). |
| Copyright (C) 2019-2021 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, see <https://www.gnu.org/licenses/>. */ |
| |
| /* Written by Bruno Haible <bruno@clisp.org>, 2019. */ |
| |
| #ifndef _WINDOWS_SPIN_H |
| #define _WINDOWS_SPIN_H |
| |
| #define WIN32_LEAN_AND_MEAN /* avoid including junk */ |
| #include <windows.h> |
| |
| typedef struct |
| { |
| LONG volatile word; |
| } |
| glwthread_spinlock_t; |
| |
| #define GLWTHREAD_SPIN_INIT { 0 } |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| extern void glwthread_spin_init (glwthread_spinlock_t *lock); |
| extern int glwthread_spin_lock (glwthread_spinlock_t *lock); |
| extern int glwthread_spin_trylock (glwthread_spinlock_t *lock); |
| extern int glwthread_spin_unlock (glwthread_spinlock_t *lock); |
| extern int glwthread_spin_destroy (glwthread_spinlock_t *lock); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _WINDOWS_SPIN_H */ |