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