timer.h

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
 
#ifndef TVM_RUNTIME_TIMER_H_
#define TVM_RUNTIME_TIMER_H_
 
#include <tvm/ffi/function.h>
#include <tvm/runtime/base.h>
#include <tvm/runtime/device_api.h>
#include <tvm/runtime/tensor.h>
 
namespace tvm {
namespace runtime {
 
class TimerObj : public ffi::Object {
 public:
  virtual void Start() = 0;
  virtual void Stop() = 0;
  virtual int64_t SyncAndGetElapsedNanos() = 0;
 
  virtual ~TimerObj() {}
 
  static constexpr const bool _type_mutable = true;
  TVM_FFI_DECLARE_OBJECT_INFO("runtime.TimerNode", TimerObj, ffi::Object);
};
 
class Timer : public ffi::ObjectRef {
 public:
  static TVM_RUNTIME_DLL Timer Start(Device dev);
 
  explicit Timer(ffi::UnsafeInit tag, ffi::ObjectPtr<TimerObj> n) : ffi::ObjectRef(tag) {
    data_ = std::move(n);
  }
 
  TVM_FFI_DEFINE_OBJECT_REF_METHODS_NOTNULLABLE(Timer, ffi::ObjectRef, TimerObj);
};
 
ffi::Function WrapTimeEvaluator(ffi::Function f, Device dev, int number, int repeat,
                                int min_repeat_ms, int limit_zero_time_iterations,
                                int cooldown_interval_ms, int repeats_to_cooldown,
                                int cache_flush_bytes = 0, ffi::Function f_preproc = nullptr);
 
}  // namespace runtime
}  // namespace tvm
 
#endif  // TVM_RUNTIME_TIMER_H_