kc3-lang/libevent/evthread_win32.c

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• Hash : 784b8773
  Author :
  Date : 2009-11-06T21:46:57
  

  We do not work any more without an event-config.h; stop pretending that it is meaningful to check for HAVE_CONFIG_H
  
  svn:r1516
  

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• evthread_win32.c

• /*
   * Copyright 2009 Niels Provos and Nick Mathewson
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  #include "event-config.h"
  
  #ifdef WIN32
  #include <winsock2.h>
  #define WIN32_LEAN_AND_MEAN
  #include <windows.h>
  #undef WIN32_LEAN_AND_MEAN
  #include <sys/locking.h>
  #endif
  
  struct event_base;
  #include <event2/thread.h>
  
  #include "mm-internal.h"
  
  static void *
  evthread_win32_lock_create(void)
  {
  	CRITICAL_SECTION *lock = mm_malloc(sizeof(CRITICAL_SECTION));
  	if (!lock)
  		return NULL;
  	InitializeCriticalSection(lock);
  	return lock;
  }
  
  static void
  evthread_win32_lock_free(void *_lock)
  {
  	CRITICAL_SECTION *lock = _lock;
  	DeleteCriticalSection(lock);
  }
  
  static void
  evthread_win32_lock(int mode, void *_lock)
  {
  	CRITICAL_SECTION *lock = _lock;
  	if (0 != (mode & EVTHREAD_LOCK))
  		EnterCriticalSection(lock);
  	else
  		LeaveCriticalSection(lock);
  }
  
  static unsigned long
  evthread_win32_get_id(void)
  {
  	return (unsigned long) GetCurrentThreadId();
  }
  
  int
  evthread_use_windows_threads(void)
  {
  	evthread_set_lock_create_callbacks(
              evthread_win32_lock_create,
              evthread_win32_lock_free);
  	evthread_set_locking_callback(evthread_win32_lock);
  	evthread_set_id_callback(evthread_win32_get_id);
  	return 0;
  }
  
  

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