1/*
2 * Copyright 2012-present Facebook, Inc.
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
17#include <folly/memory/ThreadCachedArena.h>
18
19#include <memory>
20
21namespace folly {
22
23ThreadCachedArena::ThreadCachedArena(size_t minBlockSize, size_t maxAlign)
24 : minBlockSize_(minBlockSize), maxAlign_(maxAlign) {}
25
26SysArena* ThreadCachedArena::allocateThreadLocalArena() {
27 SysArena* arena =
28 new SysArena(minBlockSize_, SysArena::kNoSizeLimit, maxAlign_);
29 auto disposer = [this](SysArena* t, TLPDestructionMode mode) {
30 std::unique_ptr<SysArena> tp(t); // ensure it gets deleted
31 if (mode == TLPDestructionMode::THIS_THREAD) {
32 zombify(std::move(*t));
33 }
34 };
35 arena_.reset(arena, disposer);
36 return arena;
37}
38
39void ThreadCachedArena::zombify(SysArena&& arena) {
40 zombies_->merge(std::move(arena));
41}
42
43size_t ThreadCachedArena::totalSize() const {
44 size_t result = sizeof(ThreadCachedArena);
45 for (const auto& arena : arena_.accessAllThreads()) {
46 result += arena.totalSize();
47 }
48 result += zombies_->totalSize() - sizeof(SysArena);
49 return result;
50}
51
52} // namespace folly
53