| //===-- Timer.h -------------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef liblldb_Timer_h_ |
| #define liblldb_Timer_h_ |
| |
| // C Includes |
| #include <stdarg.h> |
| #include <stdio.h> |
| |
| // C++ Includes |
| #include <atomic> |
| #include <mutex> |
| |
| // Other libraries and framework includes |
| // Project includes |
| #include "lldb/lldb-private.h" |
| #include "llvm/Support/Chrono.h" |
| |
| namespace lldb_private { |
| |
| //---------------------------------------------------------------------- |
| /// @class Timer Timer.h "lldb/Core/Timer.h" |
| /// @brief A timer class that simplifies common timing metrics. |
| /// |
| /// A scoped timer class that allows a variety of pthread mutex |
| /// objects to have a mutex locked when a Timer::Locker |
| /// object is created, and unlocked when it goes out of scope or |
| /// when the Timer::Locker::Reset(pthread_mutex_t *) |
| /// is called. This provides an exception safe way to lock a mutex |
| /// in a scope. |
| //---------------------------------------------------------------------- |
| |
| class Timer { |
| public: |
| //-------------------------------------------------------------- |
| /// Default constructor. |
| //-------------------------------------------------------------- |
| Timer(const char *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; } |
| |
| const char *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: |
| DISALLOW_COPY_AND_ASSIGN(Timer); |
| }; |
| |
| } // namespace lldb_private |
| |
| #endif // liblldb_Timer_h_ |