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// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "paddle/phi/backends/stream.h"
#include "paddle/fluid/platform/device/device_wrapper.h"
#include "paddle/phi/backends/device_guard.h"
#include "paddle/phi/backends/event.h"
namespace phi {
namespace stream {
Stream::~Stream() { Destroy(); }
const stream_t& Stream::raw_stream() const { return stream_; }
void Stream::set_stream(stream_t stream) { stream_ = stream; }
// For compatiable
Stream::Stream(const Place& place, stream_t stream)
: place_(place),
device_(phi::DeviceManager::GetDeviceWithPlace(place)),
stream_(stream),
callback_manager_(new CallbackManager(this)),
own_data_(false) {}
bool Stream::Init(const Place& place,
const Priority& priority,
const Flag& flag) {
place_ = place;
device_ = phi::DeviceManager::GetDeviceWithPlace(place);
DeviceGuard guard(place_);
device_->CreateStream(this, priority, flag);
callback_manager_.reset(new CallbackManager(this));
VLOG(3) << "Init Stream: " << stream_ << ", place: " << place_
<< ", priority: " << static_cast<int>(priority)
<< ", flag:" << static_cast<int>(flag);
own_data_ = true;
return true;
}
void Stream::RecordEvent(event::Event* event, Callback callback) const {
callback();
device_->RecordEvent(event, this);
}
void Stream::RecordEvent(event::Event* event) const {
device_->RecordEvent(event, this);
}
void Stream::WaitEvent(event::Event* event) const {
device_->StreamWaitEvent(this, event);
}
void Stream::Wait() const {
#if !defined(_WIN32)
device_->SynchronizeStream(this);
#else
while (1) {
if (device_->QueryStream(this)) {
break;
}
}
#endif
}
void Stream::WaitCallback() const { callback_manager_->Wait(); }
void Stream::Destroy() {
if (own_data_) {
DeviceGuard guard(place_);
device_->DestroyStream(this);
own_data_ = false;
}
}
bool Stream::Query() const { return device_->QueryStream(this); }
void Stream::Synchronize() const { device_->SynchronizeStream(this); }
const Place& Stream::GetPlace() const { return place_; }
} // namespace stream
} // namespace phi