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/*
* Copyright (C) 2010 Google 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS CONTRIBUTORS 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.
*/
#ifndef ArenaTestHelpers_h
#define ArenaTestHelpers_h
#include "platform/PODArena.h"
#include "wtf/NotFound.h"
#include "wtf/Vector.h"
#include <gtest/gtest.h>
namespace WebCore {
namespace ArenaTestHelpers {
// An allocator for the PODArena which tracks the regions which have
// been allocated.
class TrackedAllocator FINAL : public PODArena::FastMallocAllocator {
public:
static PassRefPtr<TrackedAllocator> create()
{
return adoptRef(new TrackedAllocator);
}
virtual void* allocate(size_t size) OVERRIDE
{
void* result = PODArena::FastMallocAllocator::allocate(size);
m_allocatedRegions.append(result);
return result;
}
virtual void free(void* ptr) OVERRIDE
{
size_t slot = m_allocatedRegions.find(ptr);
ASSERT_NE(slot, kNotFound);
m_allocatedRegions.remove(slot);
PODArena::FastMallocAllocator::free(ptr);
}
bool isEmpty() const
{
return !numRegions();
}
int numRegions() const
{
return m_allocatedRegions.size();
}
private:
TrackedAllocator() { }
Vector<void*> m_allocatedRegions;
};
} // namespace ArenaTestHelpers
} // namespace WebCore
#endif // ArenaTestHelpers_h
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