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50 lines
1.7 KiB
50 lines
1.7 KiB
6 years ago
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// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "paddle/fluid/memory/allocation/locked_allocator.h"
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namespace paddle {
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namespace memory {
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namespace allocation {
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std::unique_ptr<Allocation> LockedAllocator::Allocate(size_t size, Attr attr) {
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if (underlying_allocator_->IsAllocThreadSafe()) {
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return underlying_allocator_->Allocate(size, attr);
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} else {
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std::lock_guard<std::mutex> guard(mtx_);
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return underlying_allocator_->Allocate(size, attr);
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}
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}
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void LockedAllocator::Free(Allocation *allocation) {
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if (underlying_allocator_->IsAllocThreadSafe()) {
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return underlying_allocator_->Free(allocation);
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} else {
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std::lock_guard<std::mutex> guard(mtx_);
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return underlying_allocator_->Free(allocation);
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}
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}
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bool LockedAllocator::IsAllocThreadSafe() const { return true; }
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LockedAllocator::LockedAllocator(
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std::unique_ptr<Allocator> &&underlying_allocator) {
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auto *allocator =
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dynamic_cast<UnmanagedAllocator *>(underlying_allocator.get());
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PADDLE_ENFORCE_NOT_NULL(allocator);
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underlying_allocator.release();
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underlying_allocator_.reset(allocator);
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}
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} // namespace allocation
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} // namespace memory
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} // namespace paddle
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