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211 lines
8.5 KiB
211 lines
8.5 KiB
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_H_
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#define ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_H_
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#include "gc/allocator/rosalloc.h"
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#include "malloc_space.h"
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#include "space.h"
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namespace art {
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namespace gc {
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namespace collector {
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class MarkSweep;
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} // namespace collector
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namespace space {
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// An alloc space implemented using a runs-of-slots memory allocator. Not final as may be
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// overridden by a MemoryToolMallocSpace.
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class RosAllocSpace : public MallocSpace {
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public:
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// Create a RosAllocSpace with the requested sizes. The requested
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// base address is not guaranteed to be granted, if it is required,
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// the caller should call Begin on the returned space to confirm the
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// request was granted.
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static RosAllocSpace* Create(const std::string& name,
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size_t initial_size,
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size_t growth_limit,
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size_t capacity,
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bool low_memory_mode,
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bool can_move_objects);
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static RosAllocSpace* CreateFromMemMap(MemMap&& mem_map,
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const std::string& name,
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size_t starting_size,
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size_t initial_size,
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size_t growth_limit,
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size_t capacity,
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bool low_memory_mode,
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bool can_move_objects);
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mirror::Object* AllocWithGrowth(Thread* self, size_t num_bytes, size_t* bytes_allocated,
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size_t* usable_size, size_t* bytes_tl_bulk_allocated)
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override REQUIRES(!lock_);
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mirror::Object* Alloc(Thread* self, size_t num_bytes, size_t* bytes_allocated,
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size_t* usable_size, size_t* bytes_tl_bulk_allocated) override {
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return AllocNonvirtual(self, num_bytes, bytes_allocated, usable_size,
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bytes_tl_bulk_allocated);
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}
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mirror::Object* AllocThreadUnsafe(Thread* self, size_t num_bytes, size_t* bytes_allocated,
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size_t* usable_size, size_t* bytes_tl_bulk_allocated)
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override REQUIRES(Locks::mutator_lock_) {
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return AllocNonvirtualThreadUnsafe(self, num_bytes, bytes_allocated, usable_size,
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bytes_tl_bulk_allocated);
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}
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size_t AllocationSize(mirror::Object* obj, size_t* usable_size) override {
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return AllocationSizeNonvirtual<true>(obj, usable_size);
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}
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size_t Free(Thread* self, mirror::Object* ptr) override
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REQUIRES_SHARED(Locks::mutator_lock_);
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size_t FreeList(Thread* self, size_t num_ptrs, mirror::Object** ptrs) override
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REQUIRES_SHARED(Locks::mutator_lock_);
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mirror::Object* AllocNonvirtual(Thread* self, size_t num_bytes, size_t* bytes_allocated,
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size_t* usable_size, size_t* bytes_tl_bulk_allocated) {
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// RosAlloc zeroes memory internally.
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return AllocCommon(self, num_bytes, bytes_allocated, usable_size,
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bytes_tl_bulk_allocated);
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}
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mirror::Object* AllocNonvirtualThreadUnsafe(Thread* self, size_t num_bytes,
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size_t* bytes_allocated, size_t* usable_size,
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size_t* bytes_tl_bulk_allocated) {
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// RosAlloc zeroes memory internally. Pass in false for thread unsafe.
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return AllocCommon<false>(self, num_bytes, bytes_allocated, usable_size,
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bytes_tl_bulk_allocated);
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}
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// Returns true if the given allocation request can be allocated in
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// an existing thread local run without allocating a new run.
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ALWAYS_INLINE bool CanAllocThreadLocal(Thread* self, size_t num_bytes);
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// Allocate the given allocation request in an existing thread local
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// run without allocating a new run.
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ALWAYS_INLINE mirror::Object* AllocThreadLocal(Thread* self, size_t num_bytes,
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size_t* bytes_allocated);
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size_t MaxBytesBulkAllocatedFor(size_t num_bytes) override {
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return MaxBytesBulkAllocatedForNonvirtual(num_bytes);
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}
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ALWAYS_INLINE size_t MaxBytesBulkAllocatedForNonvirtual(size_t num_bytes);
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// TODO: NO_THREAD_SAFETY_ANALYSIS because SizeOf() requires that mutator_lock is held.
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template<bool kMaybeIsRunningOnMemoryTool>
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size_t AllocationSizeNonvirtual(mirror::Object* obj, size_t* usable_size)
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NO_THREAD_SAFETY_ANALYSIS;
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allocator::RosAlloc* GetRosAlloc() const {
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return rosalloc_;
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}
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size_t Trim() override;
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void Walk(WalkCallback callback, void* arg) override REQUIRES(!lock_);
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size_t GetFootprint() override;
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size_t GetFootprintLimit() override;
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void SetFootprintLimit(size_t limit) override;
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void Clear() override;
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MallocSpace* CreateInstance(MemMap&& mem_map,
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const std::string& name,
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void* allocator,
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uint8_t* begin,
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uint8_t* end,
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uint8_t* limit,
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size_t growth_limit,
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bool can_move_objects) override;
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uint64_t GetBytesAllocated() override;
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uint64_t GetObjectsAllocated() override;
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size_t RevokeThreadLocalBuffers(Thread* thread) override;
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size_t RevokeAllThreadLocalBuffers() override;
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void AssertThreadLocalBuffersAreRevoked(Thread* thread);
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void AssertAllThreadLocalBuffersAreRevoked();
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// Returns the class of a recently freed object.
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mirror::Class* FindRecentFreedObject(const mirror::Object* obj);
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bool IsRosAllocSpace() const override {
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return true;
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}
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RosAllocSpace* AsRosAllocSpace() override {
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return this;
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}
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void Verify() REQUIRES(Locks::mutator_lock_) {
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rosalloc_->Verify();
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}
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virtual ~RosAllocSpace();
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bool LogFragmentationAllocFailure(std::ostream& os, size_t failed_alloc_bytes) override {
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return rosalloc_->LogFragmentationAllocFailure(os, failed_alloc_bytes);
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}
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void DumpStats(std::ostream& os);
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protected:
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RosAllocSpace(MemMap&& mem_map,
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size_t initial_size,
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const std::string& name,
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allocator::RosAlloc* rosalloc,
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uint8_t* begin,
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uint8_t* end,
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uint8_t* limit,
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size_t growth_limit,
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bool can_move_objects,
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size_t starting_size,
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bool low_memory_mode);
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private:
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template<bool kThreadSafe = true>
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mirror::Object* AllocCommon(Thread* self, size_t num_bytes, size_t* bytes_allocated,
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size_t* usable_size, size_t* bytes_tl_bulk_allocated);
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void* CreateAllocator(void* base, size_t morecore_start, size_t initial_size,
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size_t maximum_size, bool low_memory_mode) override {
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return CreateRosAlloc(
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base, morecore_start, initial_size, maximum_size, low_memory_mode, kRunningOnMemoryTool);
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}
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static allocator::RosAlloc* CreateRosAlloc(void* base, size_t morecore_start, size_t initial_size,
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size_t maximum_size, bool low_memory_mode,
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bool running_on_memory_tool);
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void InspectAllRosAlloc(void (*callback)(void *start, void *end, size_t num_bytes, void* callback_arg),
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void* arg, bool do_null_callback_at_end)
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REQUIRES(!Locks::runtime_shutdown_lock_, !Locks::thread_list_lock_);
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void InspectAllRosAllocWithSuspendAll(
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void (*callback)(void *start, void *end, size_t num_bytes, void* callback_arg),
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void* arg, bool do_null_callback_at_end)
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REQUIRES(!Locks::runtime_shutdown_lock_, !Locks::thread_list_lock_);
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// Underlying rosalloc.
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allocator::RosAlloc* rosalloc_;
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const bool low_memory_mode_;
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friend class collector::MarkSweep;
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DISALLOW_COPY_AND_ASSIGN(RosAllocSpace);
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};
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} // namespace space
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} // namespace gc
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} // namespace art
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#endif // ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_H_
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