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/*
* Copyright (C) 2007-2012 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#ifndef BU_SYNCHRO_HEAP_H
#define BU_SYNCHRO_HEAP_H
#include "bu/heap.h"
#include "bu/mutex.h"
#include "bu/condition.h"
namespace Bu
{
template<typename item, typename cmpfunc=__basicLTCmp<item>,
typename itemalloc=std::allocator<item> >
class SynchroHeap
{
public:
SynchroHeap()
{
}
virtual ~SynchroHeap()
{
}
void enqueue( item i )
{
imData.lock();
hData.enqueue( i );
icBlock.signal();
imData.unlock();
}
item dequeue( bool bBlock=false )
{
imData.lock();
if( hData.isEmpty() )
{
imData.unlock();
if( bBlock )
{
icBlock.lock();
while( hData.isEmpty() )
icBlock.wait();
imData.lock();
try
{
item iRet = hData.dequeue();
imData.unlock();
icBlock.unlock();
return iRet;
}
catch(...)
{
imData.unlock();
icBlock.unlock();
throw;
}
}
throw HeapException("Heap empty.");
}
else
{
try
{
item iRet = hData.dequeue();
imData.unlock();
return iRet;
}
catch(...)
{
imData.unlock();
throw;
}
}
}
item dequeue( int iSec, int iUSec )
{
imData.lock();
if( hData.isEmpty() )
{
imData.unlock();
icBlock.lock();
icBlock.wait( iSec, iUSec );
imData.lock();
try
{
item iRet = hData.dequeue();
imData.unlock();
icBlock.unlock();
return iRet;
}
catch(...)
{
imData.unlock();
icBlock.unlock();
throw;
}
}
else
{
try
{
item iRet = hData.dequeue();
imData.unlock();
return iRet;
}
catch(...)
{
imData.unlock();
throw;
}
}
}
bool isEmpty()
{
imData.lock();
bool bRet = hData.isEmpty();
imData.unlock();
return bRet;
}
int getSize()
{
imData.lock();
int iRet = hData.getSize();
imData.unlock();
return iRet;
}
private:
Heap< item, cmpfunc, itemalloc > hData;
Mutex imData;
Condition icBlock;
};
};
#endif
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