stringconcurrency2.cxx

RTP协议

/* ====================================================================
 * 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].
 *
 * 4. Products derived from this software may not be called "VOCAL", nor
 *    may "VOCAL" appear in their name, without prior written
 *    permission of Vovida Networks, Inc.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA
 * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
 * IN EXCESS OF $1,000, NOR FOR ANY 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.
 * 
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
 *
 */

static const char* const stringConcurrency2_cxx_Version =
    "$Id: stringConcurrency2.cxx,v 1.1 2001/10/30 22:25:28 bko Exp $";

#include <string>
#include "VThread.hxx"
#include "VMutex.h"
#include "LockHelper.hxx"
#include <stdio.h>
#include "Fifo.h"

using namespace Vocal;

inline string fn(int i)
{
    switch(i)
    {
    case 1:
	return "one ";
	break;
    case 2:
	return "two ";
	break;
    case 3:
	return "three ";
	break;
    default:
	return "zero ";
    }
}


void* thread1(void*)
{
    for(;;)
    {
	// allocate a string, then use it as a c_str
	cout << fn(rand() % 4).c_str();
    }
    return 0;
}


struct List
{
    List* next;
    string x;
};


Vocal::Fifo <List*> f;


void* thread2(void*)
{
    for(;;)
    {
	// allocate a string, then use it as a c_str
#if 0
	if (f.size() > 100)
	{
	    usleep(100);
	}
#endif
	List* tmp = new List;
	tmp->x = fn(rand() % 4);
	f.add(tmp);
    }
    return 0;
}


void* thread3(void*)
{
    for(;;)
    {
	List* next = f.getNext();
	delete next;
    }
}

int main()
{
    //    setupProfilingStuff();

    string junk;

    VThread my_thread1;
    VThread my_thread2;
    VThread my_thread3;
    VThread my_thread4;

    my_thread1.spawn(thread1, 0);
    my_thread2.spawn(thread1, 0);
    my_thread3.spawn(thread2, 0);
    my_thread4.spawn(thread3, 0);

    for (int i = 0; i < 1000000000; i++);

    my_thread1.join();
    my_thread2.join();
    my_thread3.join();
    my_thread4.join();

    //    DumpAddressMap();
    //    finish();
    return 0;
}