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66 lines
2.1 KiB
66 lines
2.1 KiB
// 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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#pragma once
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#include <atomic> // NOLINT
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#include <chrono> // NOLINT
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#include <condition_variable> // NOLINT
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#include <memory>
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#include <mutex> // NOLINT
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#include <utility>
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#include "paddle/fluid/memory/allocation/allocator.h"
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#include "paddle/fluid/platform/enforce.h"
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namespace paddle {
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namespace memory {
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namespace allocation {
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class RetryAllocator : public Allocator {
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public:
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RetryAllocator(std::shared_ptr<Allocator> allocator, size_t retry_ms)
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: underlying_allocator_(std::move(allocator)), retry_time_(retry_ms) {
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PADDLE_ENFORCE_NOT_NULL(
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underlying_allocator_,
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platform::errors::InvalidArgument(
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"Underlying allocator of RetryAllocator is NULL"));
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PADDLE_ENFORCE_EQ(
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underlying_allocator_->IsAllocThreadSafe(), true,
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platform::errors::PreconditionNotMet(
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"Underlying allocator of RetryAllocator is not thread-safe"));
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}
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bool IsAllocThreadSafe() const override { return true; }
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protected:
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void FreeImpl(Allocation* allocation) override;
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Allocation* AllocateImpl(size_t size) override;
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uint64_t ReleaseImpl(const platform::Place& place) override {
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return underlying_allocator_->Release(place);
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}
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private:
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std::shared_ptr<Allocator> underlying_allocator_;
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std::chrono::milliseconds retry_time_;
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std::mutex mutex_;
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std::condition_variable cv_;
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std::atomic<size_t> waited_allocate_size_{0};
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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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