SysTimeKeeper Class Reference

Classes
struct	TimeData

Public Member Functions
void	start ()
	start a timer for this thread
void	stop ()
	ends a timer for this thread, accumulate time difference since start
double	elapsedTime () const

Static Public Member Functions
static SysTimeKeeper &	instance ()

Private Attributes
std::map< std::thread::id, std::chrono::steady_clock::time_point >	m_startTimes
double	m_elapsedTime = 0
std::mutex	m_mutex

Detailed Description

Helper class to keep time interval per thread

Definition at line 61 of file portable.cpp.

Member Function Documentation

elapsedTime()

double SysTimeKeeper::elapsedTime ( ) const

inline

Definition at line 88 of file portable.cpp.

{ return m_elapsedTime; }

References m_elapsedTime.

Referenced by Portable::getSysElapsedTime().

instance()

SysTimeKeeper & SysTimeKeeper::instance ( )

static

Definition at line 100 of file portable.cpp.

{
  static SysTimeKeeper theInstance;
  return theInstance;
}

Referenced by AutoTimeKeeper::AutoTimeKeeper(), Portable::getSysElapsedTime(), and AutoTimeKeeper::~AutoTimeKeeper().

start()

void SysTimeKeeper::start ( )

inline

start a timer for this thread

Definition at line 66 of file portable.cpp.

    {
      std::lock_guard<std::mutex> lock(m_mutex);
      m_startTimes[std::this_thread::get_id()] = std::chrono::steady_clock::now();
    }

References m_mutex, and m_startTimes.

Referenced by AutoTimeKeeper::AutoTimeKeeper().

stop()

void SysTimeKeeper::stop ( )

inline

ends a timer for this thread, accumulate time difference since start

Definition at line 72 of file portable.cpp.

    {
      std::lock_guard<std::mutex> lock(m_mutex);
      std::chrono::steady_clock::time_point endTime = std::chrono::steady_clock::now();
      auto it = m_startTimes.find(std::this_thread::get_id());
      if (it == m_startTimes.end())
      {
        err("SysTimeKeeper stop() called without matching start()\n");
        return;
      }
      double timeSpent = static_cast<double>(std::chrono::duration_cast<
                         std::chrono::microseconds>(endTime - it->second).count())/1000000.0;
      //printf("timeSpent on thread %zu: %.4f seconds\n",std::hash<std::thread::id>{}(std::this_thread::get_id()),timeSpent);
      m_elapsedTime += timeSpent;
    }

References err, m_elapsedTime, m_mutex, and m_startTimes.

Referenced by AutoTimeKeeper::~AutoTimeKeeper().

Member Data Documentation

m_elapsedTime

double SysTimeKeeper::m_elapsedTime = 0

private

Definition at line 96 of file portable.cpp.

Referenced by elapsedTime(), and stop().

m_mutex

std::mutex SysTimeKeeper::m_mutex

private

Definition at line 97 of file portable.cpp.

Referenced by start(), and stop().

m_startTimes

std::map<std::thread::id,std::chrono::steady_clock::time_point> SysTimeKeeper::m_startTimes

private

Definition at line 95 of file portable.cpp.

Referenced by start(), and stop().

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The documentation for this class was generated from the following file:

• src/portable.cpp