kc3-lang/gnulib/lib/windows-timedrwlock.h

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• Hash : 32a72f45
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  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• lib/windows-timedrwlock.h

• /* Timed read-write locks (native Windows implementation).
     Copyright (C) 2019-2023 Free Software Foundation, Inc.
  
     This file is free software: you can redistribute it and/or modify
     it under the terms of the GNU Lesser General Public License as
     published by the Free Software Foundation; either version 2.1 of the
     License, or (at your option) any later version.
  
     This file 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 Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser 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_TIMEDRWLOCK_H
  #define _WINDOWS_TIMEDRWLOCK_H
  
  #define WIN32_LEAN_AND_MEAN  /* avoid including junk */
  #include <windows.h>
  
  #include <time.h>
  
  #include "windows-initguard.h"
  
  #ifndef _glwthread_linked_waitqueue_link_defined
  #define _glwthread_linked_waitqueue_link_defined
  struct glwthread_waitqueue_link
  {
    struct glwthread_waitqueue_link *wql_next;
    struct glwthread_waitqueue_link *wql_prev;
  };
  #endif /* _glwthread_linked_waitqueue_link_defined */
  typedef struct
          {
            struct glwthread_waitqueue_link wq_list; /* circular list of waiting threads */
            unsigned int count; /* number of waiting threads */
          }
          glwthread_clinked_waitqueue_t;
  
  typedef struct
          {
            glwthread_initguard_t guard; /* protects the initialization */
            CRITICAL_SECTION lock; /* protects the remaining fields */
            glwthread_clinked_waitqueue_t waiting_readers; /* waiting readers */
            glwthread_clinked_waitqueue_t waiting_writers; /* waiting writers */
            int runcount; /* number of readers running, or -1 when a writer runs */
          }
          glwthread_timedrwlock_t;
  
  #define GLWTHREAD_TIMEDRWLOCK_INIT { GLWTHREAD_INITGUARD_INIT }
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  extern void glwthread_timedrwlock_init (glwthread_timedrwlock_t *lock);
  extern int glwthread_timedrwlock_rdlock (glwthread_timedrwlock_t *lock);
  extern int glwthread_timedrwlock_wrlock (glwthread_timedrwlock_t *lock);
  extern int glwthread_timedrwlock_tryrdlock (glwthread_timedrwlock_t *lock);
  extern int glwthread_timedrwlock_trywrlock (glwthread_timedrwlock_t *lock);
  extern int glwthread_timedrwlock_timedrdlock (glwthread_timedrwlock_t *lock,
                                                const struct timespec *abstime);
  extern int glwthread_timedrwlock_timedwrlock (glwthread_timedrwlock_t *lock,
                                                const struct timespec *abstime);
  extern int glwthread_timedrwlock_unlock (glwthread_timedrwlock_t *lock);
  extern int glwthread_timedrwlock_destroy (glwthread_timedrwlock_t *lock);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* _WINDOWS_TIMEDRWLOCK_H */
  

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