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paddlepaddle--paddle/paddle/phi/backends/event.h
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2026-07-13 12:40:42 +08:00

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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.
#pragma once
#include "paddle/common/macros.h"
#include "paddle/phi/common/place.h"
#ifndef EVENT_TYPE
#define EVENT_TYPE void*
#else
#include <cuda_runtime.h>
#endif
namespace phi {
class Device;
namespace stream {
class Stream;
} // namespace stream
namespace event {
using event_t = EVENT_TYPE;
class PADDLE_API Event {
public:
enum Flag {
Default = 0x0,
BlockingSync = 0x1,
DisableTiming = 0x2,
Interprocess = 0x4,
};
Event() = default;
// For compatible
Event(const Place& place, event_t event);
~Event();
event_t raw_event() const;
void set_event(event_t event);
bool Init(const Place& place, Flag flags = Flag::Default);
void Destroy();
void Record(const stream::Stream* stream);
bool Query() const;
void Synchronize() const;
const Place& GetPlace() const;
static void ReleaseAll();
private:
DISABLE_COPY_AND_ASSIGN(Event);
Place place_;
Device* device_;
event_t event_;
bool own_data_ = true;
mutable bool is_recorded_ = false;
};
} // namespace event
} // namespace phi