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29 #ifndef WTF_MetaAllocatorHandle_h
30 #define WTF_MetaAllocatorHandle_h
32 #include <wtf/Assertions.h>
33 #include <wtf/RefCounted.h>
34 #include <wtf/RefPtr.h>
40 class MetaAllocatorHandle: public RefCounted<MetaAllocatorHandle> {
42 MetaAllocatorHandle(MetaAllocator*, void* start, size_t sizeInBytes);
44 MetaAllocatorHandle(void* start, size_t sizeInBytes)
47 , m_sizeInBytes(sizeInBytes)
53 ~MetaAllocatorHandle();
55 static PassRefPtr<MetaAllocatorHandle> createSelfManagedHandle(void* start, size_t sizeInBytes)
57 return adoptRef(new MetaAllocatorHandle(start, sizeInBytes));
67 return reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(m_start) + m_sizeInBytes);
75 void shrink(size_t newSizeInBytes);
82 MetaAllocator* allocator()
89 friend class MetaAllocator;
91 MetaAllocator* m_allocator;