wehub-resource-sync
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
// Copyright (c) 2022 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/phi/backends/callback_manager.h"
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#include <ThreadPool.h>
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#include "paddle/phi/backends/device_guard.h"
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#include "paddle/phi/core/enforce.h"
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namespace phi {
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CallbackManager::CallbackManager(stream::Stream *stream)
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: stream_(stream), thread_pool_(new ::ThreadPool(1)) {}
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void CallbackManager::AddCallback(std::function<void()> callback) const {
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auto *callback_func = new std::function<void()>(std::move(callback));
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auto *func = new std::function<void()>([this, callback_func] {
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std::lock_guard<std::mutex> lock(mtx_);
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last_future_ = thread_pool_->enqueue([callback_func] {
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std::unique_ptr<std::function<void()>> releaser(callback_func);
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(*callback_func)();
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});
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});
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phi::DeviceGuard guard(stream_->GetPlace());
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DeviceManager::GetDeviceWithPlace(stream_->GetPlace())
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->AddCallback(stream_, func);
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}
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void CallbackManager::Wait() const {
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phi::DeviceGuard guard(stream_->GetPlace());
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DeviceManager::GetDeviceWithPlace(stream_->GetPlace())
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->SynchronizeStream(stream_->raw_stream());
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{
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std::lock_guard<std::mutex> lock(mtx_);
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if (last_future_.valid()) {
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last_future_.wait();
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}
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}
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}
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} // namespace phi
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