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// ==========================================================================
// SeqAn - The Library for Sequence Analysis
// ==========================================================================
// Copyright (c) 2006-2018, Knut Reinert, FU Berlin
// 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.
// * 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.
// * Neither the name of Knut Reinert or the FU Berlin nor the names of
// its 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 KNUT REINERT OR THE FU BERLIN 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.
//
// ==========================================================================
// Author: David Weese <david.weese@fu-berlin.de>
// ==========================================================================
// Pool for reusable items, e.g. buffer strings
// ==========================================================================
#ifndef SEQAN_PARALLEL_PARALLEL_RESOURCE_POOL_H_
#define SEQAN_PARALLEL_PARALLEL_RESOURCE_POOL_H_
namespace seqan {
// ============================================================================
// Classes
// ============================================================================
// ----------------------------------------------------------------------------
// Class ResourcePool
// ----------------------------------------------------------------------------
template <typename TValue>
struct ResourcePool
{
typedef ConcurrentQueue<TValue *, Suspendable<> > TStack;
typedef typename Size<TStack>::Type TSize;
TStack recycled;
ResourcePool(TSize maxSize)
{
setWriterCount(recycled, 1);
for (; maxSize != 0; --maxSize)
appendValue(recycled, (TValue *)NULL);
}
~ResourcePool()
{
unlockWriting(recycled);
TValue *ptr = NULL;
unsigned count = 0;
while (popBack(ptr, recycled))
{
if (ptr != NULL)
count++;
delete ptr;
}
}
};
// ============================================================================
// Functions
// ============================================================================
// ----------------------------------------------------------------------------
// Function aquireValue()
// ----------------------------------------------------------------------------
template <typename TValue>
inline TValue *
aquireValue(ResourcePool<TValue> & me)
{
TValue *ptr = NULL;
if (!popBack(ptr, me.recycled))
return NULL;
if (ptr == NULL)
ptr = new TValue;
return ptr;
}
// ----------------------------------------------------------------------------
// Function releaseValue()
// ----------------------------------------------------------------------------
template <typename TValue>
inline void
releaseValue(ResourcePool<TValue> & me, TValue *ptr)
{
appendValue(me.recycled, ptr);
}
} // namespace seqan
#endif // #ifndef SEQAN_PARALLEL_PARALLEL_RESOURCE_POOL_H_
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