1  /* Timed mutexes (native Windows implementation).
       2     Copyright (C) 2005-2023 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, 2019.
      18     Based on GCC's gthr-win32.h.  */
      19  
      20  #ifndef _WINDOWS_TIMEDMUTEX_H
      21  #define _WINDOWS_TIMEDMUTEX_H
      22  
      23  #define WIN32_LEAN_AND_MEAN  /* avoid including junk */
      24  #include <windows.h>
      25  
      26  #include <time.h>
      27  
      28  #include "windows-initguard.h"
      29  
      30  typedef struct
      31          {
      32            glwthread_initguard_t guard; /* protects the initialization */
      33            HANDLE event;
      34            CRITICAL_SECTION lock;
      35          }
      36          glwthread_timedmutex_t;
      37  
      38  #define GLWTHREAD_TIMEDMUTEX_INIT { GLWTHREAD_INITGUARD_INIT }
      39  
      40  #ifdef __cplusplus
      41  extern "C" {
      42  #endif
      43  
      44  extern int glwthread_timedmutex_init (glwthread_timedmutex_t *mutex);
      45  extern int glwthread_timedmutex_lock (glwthread_timedmutex_t *mutex);
      46  extern int glwthread_timedmutex_trylock (glwthread_timedmutex_t *mutex);
      47  extern int glwthread_timedmutex_timedlock (glwthread_timedmutex_t *mutex,
      48                                             const struct timespec *abstime);
      49  extern int glwthread_timedmutex_unlock (glwthread_timedmutex_t *mutex);
      50  extern int glwthread_timedmutex_destroy (glwthread_timedmutex_t *mutex);
      51  
      52  #ifdef __cplusplus
      53  }
      54  #endif
      55  
      56  #endif /* _WINDOWS_TIMEDMUTEX_H */