57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/* Plain recursive mutexes (native Windows implementation).
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Copyright (C) 2005-2021 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2005.
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Based on GCC's gthr-win32.h. */
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#ifndef _WINDOWS_RECMUTEX_H
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#define _WINDOWS_RECMUTEX_H
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#define WIN32_LEAN_AND_MEAN /* avoid including junk */
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#include <windows.h>
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#include "windows-initguard.h"
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/* The native Windows documentation says that CRITICAL_SECTION already
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implements a recursive lock. But we need not rely on it: It's easy to
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implement a recursive lock without this assumption. */
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typedef struct
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{
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glwthread_initguard_t guard; /* protects the initialization */
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DWORD owner;
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unsigned long depth;
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CRITICAL_SECTION lock;
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}
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glwthread_recmutex_t;
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#define GLWTHREAD_RECMUTEX_INIT { GLWTHREAD_INITGUARD_INIT, 0, 0 }
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern void glwthread_recmutex_init (glwthread_recmutex_t *mutex);
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extern int glwthread_recmutex_lock (glwthread_recmutex_t *mutex);
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extern int glwthread_recmutex_trylock (glwthread_recmutex_t *mutex);
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extern int glwthread_recmutex_unlock (glwthread_recmutex_t *mutex);
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extern int glwthread_recmutex_destroy (glwthread_recmutex_t *mutex);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _WINDOWS_RECMUTEX_H */
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