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29 #ifndef WTF_MetaAllocatorHandle_h
30 #define WTF_MetaAllocatorHandle_h
32 #include <wtf/Assertions.h>
33 #include <wtf/RedBlackTree.h>
34 #include <wtf/RefCounted.h>
35 #include <wtf/RefPtr.h>
41 class MetaAllocatorHandle : public RefCounted<MetaAllocatorHandle>, public RedBlackTree<MetaAllocatorHandle, void*>::Node {
43 MetaAllocatorHandle(MetaAllocator*, void* start, size_t sizeInBytes, void* ownerUID);
46 WTF_EXPORT_PRIVATE ~MetaAllocatorHandle();
55 return reinterpret_cast<void*>(endAsInteger());
58 uintptr_t startAsInteger() const
60 return reinterpret_cast<uintptr_t>(m_start);
63 uintptr_t endAsInteger() const
65 return startAsInteger() + m_sizeInBytes;
68 size_t sizeInBytes() const
73 WTF_EXPORT_PRIVATE void shrink(size_t newSizeInBytes);
80 MetaAllocator* allocator()
97 friend class MetaAllocator;
99 MetaAllocator* m_allocator;
101 size_t m_sizeInBytes;