/* 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/fluid/platform/profiler/tracer_base.h"

namespace paddle {
namespace platform {

class HostTraceLevel {
 public:
  static constexpr int64_t kDisabled = -1;

  static HostTraceLevel& GetInstance() {
    static HostTraceLevel instance;
    return instance;
  }

  bool NeedTrace(uint32_t level) {
    return trace_level_ >= static_cast<int64_t>(level);
  }

  void SetLevel(int64_t trace_level) { trace_level_ = trace_level; }

 private:
  // Verbose trace level, works like VLOG(level)
  int trace_level_ = kDisabled;
};

struct HostTracerOptions {
  uint32_t trace_level = 0;
};

class HostTracer : public TracerBase {
 public:
  explicit HostTracer(const HostTracerOptions& options) {
    trace_level_ = options.trace_level;
  }

  void StartTracing() override;

  void StopTracing() override;

  void CollectTraceData(TraceEventCollector* collector) override;

 private:
  uint32_t trace_level_;
};

}  // namespace platform
}  // namespace paddle