vsemaphore.cxx

SIP（Session Initiation Protocol）是由IETF定义

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
 * 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 names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact [e-mail].
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 * 4. Products derived from this software may not be called "VOCAL", nor
 *    may "VOCAL" appear in their name, without prior written
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static const char* const VSemaphore_cxx_version =
    "$Id: VSemaphore.cxx,v 1.4 2002/03/06 00:09:19 bko Exp $";


//#include "global.h"
#include "VSemaphore.hxx"

#if defined(__svr4__)|| defined (__SUNPRO_CC)

VSemaphore::VSemaphore(void)
{

    sema_init(&semaphore, 1, USYNC_THREAD, 0);

}

VSemaphore::VSemaphore(int available)
{

    sema_init(&semaphore, available, USYNC_THREAD, 0);
}

VSemaphore:: ~VSemaphore(void)
{
    sema_destroy(&semaphore);
}

void
VSemaphore::Post(void)
{
    sema_post(&semaphore);
}

void
VSemaphore::Post(int how_many)
{
    while (how_many-- > 0)
        sema_post(&semaphore);
}

void
VSemaphore::Wait(void)
{
    sema_wait(&semaphore);
}
#else

VSemaphore::VSemaphore(void)
{

    sem_init(&semaphore, 0, 1);

}

VSemaphore::VSemaphore(int available)
{
    sem_init(&semaphore, 0, available);
}

VSemaphore:: ~VSemaphore(void)
{
    sem_destroy(&semaphore);
}

void
VSemaphore::Post(void)
{
    sem_post(&semaphore);
}

void
VSemaphore::Post(int how_many)
{
    while (how_many-- > 0)
        sem_post(&semaphore);
}

void
VSemaphore::Wait(void)
{
    sem_wait(&semaphore);
}

#endif