/* 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/custom/custom_context.h"

#include "paddle/phi/backends/device_guard.h"
#include "paddle/phi/backends/stream.h"

namespace phi {

template <>
const TypeInfo<DeviceContext>
    TypeInfoTraits<DeviceContext, CustomContext>::kType =
        RegisterStaticType<DeviceContext>(CustomContext::name());

struct CustomContext::Impl {
  explicit Impl(const CustomPlace& place) : place_(place) {}

  ~Impl() {}

  void Init() {
    phi::DeviceGuard guard(place_);
    stream_.reset(new phi::stream::Stream());
    stream_->Init(place_);
  }

  const Place& GetPlace() const { return place_; }

  void* stream() const {
    return reinterpret_cast<void*>(stream_->raw_stream());
  }

  std::shared_ptr<phi::stream::Stream> GetStream() const { return stream_; }

  void SetStream(std::shared_ptr<phi::stream::Stream> stream) {
    stream_ = stream;
  }

  void Wait() const { stream_->Wait(); }

  phi::ccl::CCLComm xccl_comm() const { return comm_; }

  void set_xccl_comm(phi::ccl::CCLComm comm) { comm_ = comm; }

  Place place_;

  std::shared_ptr<phi::stream::Stream> stream_;

  phi::ccl::CCLComm comm_;
};

void CustomContext::Init() { impl_->Init(); }

const Place& CustomContext::GetPlace() const { return impl_->GetPlace(); }

void* CustomContext::stream() const { return impl_->stream(); }

std::shared_ptr<phi::stream::Stream> CustomContext::GetStream() const {
  return impl_->GetStream();
}

void CustomContext::SetStream(std::shared_ptr<phi::stream::Stream> stream) {
  impl_->SetStream(stream);
}

void CustomContext::Wait() const { return impl_->Wait(); }

CustomContext::CustomContext(const CustomPlace& place)
    : DeviceContext(), impl_(std::make_unique<Impl>(place)) {
  impl_->Init();
}

CustomContext::~CustomContext() { impl_->Init(); }

phi::ccl::CCLComm CustomContext::xccl_comm() const {
  return impl_->xccl_comm();
}

void CustomContext::set_xccl_comm(phi::ccl::CCLComm comm) {
  impl_->set_xccl_comm(comm);
}
}  // namespace phi
