/*
 * $Id: stdlib_semaphore.c,v 1.2 2006-01-08 12:04:26 obarthel Exp $
 *
 * :ts=4
 *
 * Portable ISO 'C' (1994) runtime library for the Amiga computer
 * Copyright (c) 2002-2015 by Olaf Barthel <obarthel (at) gmx.net>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Neither the name of Olaf Barthel nor the names of contributors
 *     may be used to endorse or promote products derived from this
 *     software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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 "stdlib_headers.h"

/****************************************************************************/

struct SignalSemaphore *
__create_semaphore(void)
{
	struct SignalSemaphore * semaphore;

	#if defined(__amigaos4__)
	{
		semaphore = AllocSysObject(ASOT_SEMAPHORE,NULL);
	}
	#else
	{
		semaphore = AllocVec(sizeof(*semaphore),MEMF_ANY|MEMF_PUBLIC);
		if(semaphore != NULL)
			InitSemaphore(semaphore);
	}
	#endif /* __amigaos4 */

	return(semaphore);
}

/****************************************************************************/

void
__delete_semaphore(struct SignalSemaphore * semaphore)
{
	if(semaphore != NULL)
	{
		#if defined(__amigaos4__)
		{
			FreeSysObject(ASOT_SEMAPHORE,semaphore);
		}
		#else
		{
			assert( semaphore->ss_Owner == NULL );

			#if defined(DEBUG)
			{
				/* Just in case somebody tries to reuse this data
				   structure; this should produce an alert if
				   attempted. */
				memset(semaphore,0,sizeof(*semaphore));
			}
			#endif /* DEBUG */

			FreeVec(semaphore);
		}
		#endif /* __amigaos4 */
	}
}