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/*
* 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 ValgrindMallocSpace.
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, byte* requested_begin, bool low_memory_mode);
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);
mirror::Object* AllocWithGrowth(Thread* self, size_t num_bytes, size_t* bytes_allocated,
size_t* usable_size) OVERRIDE LOCKS_EXCLUDED(lock_);
mirror::Object* Alloc(Thread* self, size_t num_bytes, size_t* bytes_allocated,
size_t* usable_size) OVERRIDE {
return AllocNonvirtual(self, num_bytes, bytes_allocated, usable_size);
}
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
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
size_t FreeList(Thread* self, size_t num_ptrs, mirror::Object** ptrs) OVERRIDE
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
mirror::Object* AllocNonvirtual(Thread* self, size_t num_bytes, size_t* bytes_allocated,
size_t* usable_size) {
// RosAlloc zeroes memory internally.
return AllocCommon(self, num_bytes, bytes_allocated, usable_size);
}
// TODO: NO_THREAD_SAFETY_ANALYSIS because SizeOf() requires that mutator_lock is held.
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 LOCKS_EXCLUDED(lock_);
size_t GetFootprint() OVERRIDE;
size_t GetFootprintLimit() OVERRIDE;
void SetFootprintLimit(size_t limit) OVERRIDE;
void Clear() OVERRIDE;
void Reset() OVERRIDE;
MallocSpace* CreateInstance(const std::string& name, MemMap* mem_map, void* allocator,
byte* begin, byte* end, byte* limit, size_t growth_limit);
uint64_t GetBytesAllocated() OVERRIDE;
uint64_t GetObjectsAllocated() OVERRIDE;
void RevokeThreadLocalBuffers(Thread* thread);
void RevokeAllThreadLocalBuffers();
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() EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) {
rosalloc_->Verify();
}
virtual ~RosAllocSpace();
protected:
RosAllocSpace(const std::string& name, MemMap* mem_map, allocator::RosAlloc* rosalloc,
byte* begin, byte* end, byte* limit, size_t growth_limit);
private:
mirror::Object* AllocCommon(Thread* self, size_t num_bytes, size_t* bytes_allocated,
size_t* usable_size);
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);
}
static allocator::RosAlloc* CreateRosAlloc(void* base, size_t morecore_start, size_t initial_size,
size_t maximum_size, bool low_memory_mode);
void InspectAllRosAlloc(void (*callback)(void *start, void *end, size_t num_bytes, void* callback_arg),
void* arg)
LOCKS_EXCLUDED(Locks::runtime_shutdown_lock_, Locks::thread_list_lock_);
// Underlying rosalloc.
allocator::RosAlloc* const rosalloc_;
friend class collector::MarkSweep;
DISALLOW_COPY_AND_ASSIGN(RosAllocSpace);
};
} // namespace space
} // namespace gc
} // namespace art
#endif // ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_H_
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