1 /* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef ArenaTestHelpers_h 27 #define ArenaTestHelpers_h 28 29 #include "platform/PODArena.h" 30 #include "wtf/NotFound.h" 31 #include "wtf/Vector.h" 32 33 #include <gtest/gtest.h> 34 35 namespace WebCore { 36 namespace ArenaTestHelpers { 37 38 // An allocator for the PODArena which tracks the regions which have 39 // been allocated. 40 class TrackedAllocator FINAL : public PODArena::FastMallocAllocator { 41 public: create()42 static PassRefPtr<TrackedAllocator> create() 43 { 44 return adoptRef(new TrackedAllocator); 45 } 46 allocate(size_t size)47 virtual void* allocate(size_t size) OVERRIDE 48 { 49 void* result = PODArena::FastMallocAllocator::allocate(size); 50 m_allocatedRegions.append(result); 51 return result; 52 } 53 free(void * ptr)54 virtual void free(void* ptr) OVERRIDE 55 { 56 size_t slot = m_allocatedRegions.find(ptr); 57 ASSERT_NE(slot, kNotFound); 58 m_allocatedRegions.remove(slot); 59 PODArena::FastMallocAllocator::free(ptr); 60 } 61 isEmpty()62 bool isEmpty() const 63 { 64 return !numRegions(); 65 } 66 numRegions()67 int numRegions() const 68 { 69 return m_allocatedRegions.size(); 70 } 71 72 private: TrackedAllocator()73 TrackedAllocator() { } 74 Vector<void*> m_allocatedRegions; 75 }; 76 77 } // namespace ArenaTestHelpers 78 } // namespace WebCore 79 80 #endif // ArenaTestHelpers_h 81