/*
|
* Copyright (C) 2014 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_ALLOCATOR_TYPE_H_
|
#define ART_RUNTIME_GC_ALLOCATOR_TYPE_H_
|
|
#include <iosfwd>
|
|
namespace art {
|
namespace gc {
|
|
// Different types of allocators.
|
// Those marked with * have fast path entrypoints callable from generated code.
|
enum AllocatorType {
|
// BumpPointer spaces are currently only used for ZygoteSpace construction.
|
kAllocatorTypeBumpPointer, // Use global CAS-based BumpPointer allocator. (*)
|
kAllocatorTypeTLAB, // Use TLAB allocator within BumpPointer space. (*)
|
kAllocatorTypeRosAlloc, // Use RosAlloc (segregated size, free list) allocator. (*)
|
kAllocatorTypeDlMalloc, // Use dlmalloc (well-known C malloc) allocator. (*)
|
kAllocatorTypeNonMoving, // Special allocator for non moving objects.
|
kAllocatorTypeLOS, // Large object space.
|
// The following differ from the BumpPointer allocators primarily in that memory is
|
// allocated from multiple regions, instead of a single contiguous space.
|
kAllocatorTypeRegion, // Use CAS-based contiguous bump-pointer allocation within a region. (*)
|
kAllocatorTypeRegionTLAB, // Use region pieces as TLABs. Default for most small objects. (*)
|
};
|
std::ostream& operator<<(std::ostream& os, const AllocatorType& rhs);
|
|
inline constexpr bool IsTLABAllocator(AllocatorType allocator) {
|
return allocator == kAllocatorTypeTLAB || allocator == kAllocatorTypeRegionTLAB;
|
}
|
|
} // namespace gc
|
} // namespace art
|
|
#endif // ART_RUNTIME_GC_ALLOCATOR_TYPE_H_
|
