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// **********************************************************************
//
// Copyright (c) 2003-2005 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IceUtil/MemoryPool.h>
using namespace std;
bool IceUtil::SimpleMemoryPool::_usePool = true;
int IceUtil::SimpleMemoryPool::_traceLevel = 0;
IceUtil::SimpleMemoryPool::SimpleMemoryPool(const char* name, int num) :
_name(name),
_num(num),
_pool(0)
{
}
void*
IceUtil::SimpleMemoryPool::operatorNew(size_t sz)
{
if(!_usePool)
{
return ::operator new(sz);
}
sz = (sz + 7) & 0xffffff8U;
if(_pool == 0 || *reinterpret_cast<void**>(_pool) == 0)
{
int total = 8 + sz;
char* p = reinterpret_cast<char*>(malloc(_num * total));
int i;
for(i = 0; i < _num - 1; ++i)
{
*reinterpret_cast<void**>(p + i * total) = p + (i + 1) * total;
}
*reinterpret_cast<void**>(p + i * total) = 0;
if(_pool == 0)
{
_pool = p;
}
else
{
*reinterpret_cast<void**>(_pool) = p;
}
}
void* result = reinterpret_cast<char*>(_pool) + 8;
_pool = *reinterpret_cast<void**>(_pool);
return result;
}
void
IceUtil::SimpleMemoryPool::operatorDelete(void* p)
{
if(!_usePool)
{
::operator delete(p);
return;
}
if(p == 0)
{
return;
}
*reinterpret_cast<void**>(reinterpret_cast<char*>(p) - 8) = _pool;
_pool = reinterpret_cast<char*>(p) - 8;
}
void
IceUtil::SimpleMemoryPool::usePool(bool b)
{
_usePool = b;
}
void
IceUtil::SimpleMemoryPool::traceLevel(int lvl)
{
_traceLevel = lvl;
}
IceUtil::MemoryPool::MemoryPool(const char* name, int num) :
SimpleMemoryPool(name, num)
{
}
void*
IceUtil::MemoryPool::operatorNew(size_t sz)
{
if(!_usePool)
{
return ::operator new(sz);
}
IceUtil::Mutex::Lock lock(*this);
return SimpleMemoryPool::operatorNew(sz);
}
void
IceUtil::MemoryPool::operatorDelete(void* p)
{
if(!_usePool)
{
::operator delete(p);
return;
}
IceUtil::Mutex::Lock lock(*this);
SimpleMemoryPool::operatorDelete(p);
}
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