You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
77 lines
1.9 KiB
77 lines
1.9 KiB
//===-- 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 LLDB_UTILITY_TIMER_H
|
|
#define LLDB_UTILITY_TIMER_H
|
|
|
|
#include "lldb/lldb-defines.h"
|
|
#include "llvm/Support/Chrono.h"
|
|
#include <atomic>
|
|
#include <stdint.h>
|
|
|
|
namespace lldb_private {
|
|
class Stream;
|
|
|
|
/// \class Timer Timer.h "lldb/Utility/Timer.h"
|
|
/// A timer class that simplifies common timing metrics.
|
|
|
|
class Timer {
|
|
public:
|
|
class Category {
|
|
public:
|
|
explicit Category(const char *category_name);
|
|
|
|
private:
|
|
friend class Timer;
|
|
const char *m_name;
|
|
std::atomic<uint64_t> m_nanos;
|
|
std::atomic<uint64_t> m_nanos_total;
|
|
std::atomic<uint64_t> m_count;
|
|
std::atomic<Category *> m_next;
|
|
|
|
Category(const Category &) = delete;
|
|
const Category &operator=(const Category &) = delete;
|
|
};
|
|
|
|
/// Default constructor.
|
|
Timer(Category &category, const char *format, ...)
|
|
__attribute__((format(printf, 3, 4)));
|
|
|
|
/// Destructor
|
|
~Timer();
|
|
|
|
void Dump();
|
|
|
|
static void SetDisplayDepth(uint32_t depth);
|
|
|
|
static void SetQuiet(bool value);
|
|
|
|
static void DumpCategoryTimes(Stream *s);
|
|
|
|
static void ResetCategoryTimes();
|
|
|
|
protected:
|
|
using TimePoint = std::chrono::steady_clock::time_point;
|
|
void ChildDuration(TimePoint::duration dur) { m_child_duration += dur; }
|
|
|
|
Category &m_category;
|
|
TimePoint m_total_start;
|
|
TimePoint::duration m_child_duration{0};
|
|
|
|
static std::atomic<bool> g_quiet;
|
|
static std::atomic<unsigned> g_display_depth;
|
|
|
|
private:
|
|
Timer(const Timer &) = delete;
|
|
const Timer &operator=(const Timer &) = delete;
|
|
};
|
|
|
|
} // namespace lldb_private
|
|
|
|
#endif // LLDB_UTILITY_TIMER_H
|