6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
//===-- 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 <cstdint>
|
|
|
|
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);
|
|
llvm::StringRef GetName() { return m_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, ...)
|
|
#if !defined(_MSC_VER)
|
|
// MSVC appears to have trouble recognizing the this argument in the constructor.
|
|
__attribute__((format(printf, 3, 4)))
|
|
#endif
|
|
;
|
|
|
|
/// 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
|
|
|
|
// Use a format string because LLVM_PRETTY_FUNCTION might not be a string
|
|
// literal.
|
|
#define LLDB_SCOPED_TIMER() \
|
|
static ::lldb_private::Timer::Category _cat(LLVM_PRETTY_FUNCTION); \
|
|
::lldb_private::Timer _scoped_timer(_cat, "%s", LLVM_PRETTY_FUNCTION)
|
|
#define LLDB_SCOPED_TIMERF(...) \
|
|
static ::lldb_private::Timer::Category _cat(LLVM_PRETTY_FUNCTION); \
|
|
::lldb_private::Timer _scoped_timer(_cat, __VA_ARGS__)
|
|
|
|
#endif // LLDB_UTILITY_TIMER_H
|