Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- Timer.h ----------------------------------------------*- C++ -*-===//

//

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

// See https://llvm.org/LICENSE.txt for license information.

// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

//

//===----------------------------------------------------------------------===//

#ifndef LLD_COMMON_TIMER_H

#define LLD_COMMON_TIMER_H

#include "llvm/ADT/DenseMap.h"

#include "llvm/ADT/StringRef.h"

#include <assert.h>

#include <atomic>

#include <chrono>

#include <map>

#include <memory>

#include <vector>

namespace lld {

class Timer;

struct ScopedTimer {

  explicit ScopedTimer(Timer &t);

  ~ScopedTimer();

  void stop();

  std::chrono::time_point<std::chrono::high_resolution_clock> startTime;

  Timer *t = nullptr;

};

class Timer {

public:

  Timer(llvm::StringRef name, Timer &parent);

  // Creates the root timer.

  explicit Timer(llvm::StringRef name);

  void addToTotal(std::chrono::nanoseconds time) { total += time.count(); }

  void print();

  double millis() const;

private:

  void print(int depth, double totalDuration, bool recurse = true) const;

  std::atomic<std::chrono::nanoseconds::rep> total;

  std::vector<Timer *> children;

  std::string name;

};

} // namespace lld

#endif