llvm/compiler-rt/lib/scudo/standalone/timing.h

//===-- timing.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 SCUDO_TIMING_H_
#define SCUDO_TIMING_H_

#include "common.h"
#include "mutex.h"
#include "string_utils.h"
#include "thread_annotations.h"

#ifndef __STDC_FORMAT_MACROS
// Ensure PRId64 macro is available
#define __STDC_FORMAT_MACROS …
#endif
#include <inttypes.h>
#include <string.h>

namespace scudo {

class TimingManager;

// A simple timer for evaluating execution time of code snippets. It can be used
// along with TimingManager or standalone.
class Timer { … };

// A RAII-style wrapper for easy scope execution measurement. Note that in order
// not to take additional space for the message like `Name`. It only works with
// TimingManager.
class ScopedTimer : public Timer { … };

// In Scudo, the execution time of single run of code snippets may not be
// useful, we are more interested in the average time from several runs.
// TimingManager lets the registered timer report their data and reports the
// average execution time for each timer periodically.
class TimingManager { … };

} // namespace scudo

#endif // SCUDO_TIMING_H_