adtools/clib2

/*
 * $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 */
    }
}