Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Mathieu Chartier | b666f48 | 2015-02-18 14:33:14 -0800 | [diff] [blame] | 17 | #ifndef ART_RUNTIME_BASE_ARENA_OBJECT_H_ |
| 18 | #define ART_RUNTIME_BASE_ARENA_OBJECT_H_ |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 19 | |
Andreas Gampe | 5794381 | 2017-12-06 21:39:13 -0800 | [diff] [blame^] | 20 | #include <android-base/logging.h> |
| 21 | |
| 22 | #include "arena_allocator.h" |
| 23 | #include "macros.h" |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 24 | #include "scoped_arena_allocator.h" |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 25 | |
| 26 | namespace art { |
| 27 | |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 28 | // Parent for arena allocated objects giving appropriate new and delete operators. |
| 29 | template<enum ArenaAllocKind kAllocKind> |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 30 | class ArenaObject { |
| 31 | public: |
| 32 | // Allocate a new ArenaObject of 'size' bytes in the Arena. |
| 33 | void* operator new(size_t size, ArenaAllocator* allocator) { |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 34 | return allocator->Alloc(size, kAllocKind); |
| 35 | } |
| 36 | |
Vladimir Marko | e764d2e | 2017-10-05 14:35:55 +0100 | [diff] [blame] | 37 | static void* operator new(size_t size, ScopedArenaAllocator* allocator) { |
| 38 | return allocator->Alloc(size, kAllocKind); |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 39 | } |
| 40 | |
| 41 | void operator delete(void*, size_t) { |
| 42 | LOG(FATAL) << "UNREACHABLE"; |
Ian Rogers | 2c4257b | 2014-10-24 14:20:06 -0700 | [diff] [blame] | 43 | UNREACHABLE(); |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 44 | } |
Vladimir Marko | 225b646 | 2015-09-28 12:17:40 +0100 | [diff] [blame] | 45 | |
| 46 | // NOTE: Providing placement new (and matching delete) for constructing container elements. |
| 47 | ALWAYS_INLINE void* operator new(size_t, void* ptr) noexcept { return ptr; } |
| 48 | ALWAYS_INLINE void operator delete(void*, void*) noexcept { } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 49 | }; |
| 50 | |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 51 | |
| 52 | // Parent for arena allocated objects that get deleted, gives appropriate new and delete operators. |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 53 | template<enum ArenaAllocKind kAllocKind> |
| 54 | class DeletableArenaObject { |
| 55 | public: |
| 56 | // Allocate a new ArenaObject of 'size' bytes in the Arena. |
| 57 | void* operator new(size_t size, ArenaAllocator* allocator) { |
| 58 | return allocator->Alloc(size, kAllocKind); |
| 59 | } |
| 60 | |
Vladimir Marko | e764d2e | 2017-10-05 14:35:55 +0100 | [diff] [blame] | 61 | static void* operator new(size_t size, ScopedArenaAllocator* allocator) { |
| 62 | return allocator->Alloc(size, kAllocKind); |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 63 | } |
| 64 | |
| 65 | void operator delete(void*, size_t) { |
| 66 | // Nop. |
| 67 | } |
| 68 | }; |
| 69 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 70 | } // namespace art |
| 71 | |
Mathieu Chartier | b666f48 | 2015-02-18 14:33:14 -0800 | [diff] [blame] | 72 | #endif // ART_RUNTIME_BASE_ARENA_OBJECT_H_ |