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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// ace
//
// = FILENAME
// Profile_Timer.h
//
// = AUTHOR
// Douglas C. Schmidt <schmidt@cs.wustl.edu>
//
// ============================================================================
#ifndef ACE_PROFILE_TIMER_H
#define ACE_PROFILE_TIMER_H
#include "ace/ACE.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/Time_Value.h"
#include "ace/High_Res_Timer.h"
class ACE_Export ACE_Profile_Timer
{
// = TITLE
// This class provides both a timing mechanism and a mechanism
// for reporting the resource usage of a process.
public:
class ACE_Elapsed_Time
{
// = TITLE
// Keeps track of the various user, system, and elapsed (real)
// times.
//
// = DESCRIPTION
// If <ACE_HAS_FLOATING_POINT> is enabled these values are in
// microseconds, otherwise, they are in seconds.
public:
ACE_timer_t real_time;
ACE_timer_t user_time;
ACE_timer_t system_time;
};
typedef ACE_Rusage Rusage;
// = Initialization and termination methods.
ACE_Profile_Timer (void);
// Default constructor.
~ACE_Profile_Timer (void);
// Shutdown the timer.
// = Timer methods.
int start (void);
// Activate the timer.
int stop (void);
// Stop the timer.
// = Resource utilization methods.
int elapsed_time (ACE_Elapsed_Time &et);
// Compute the time elapsed since <start>.
void elapsed_rusage (ACE_Profile_Timer::Rusage &rusage);
// Compute the amount of resource utilization since the start time.
void get_rusage (ACE_Profile_Timer::Rusage &rusage);
// Return the resource utilization (don't recompute it).
void dump (void) const;
// Dump the state of an object.
ACE_ALLOC_HOOK_DECLARE;
// Declare the dynamic allocation hooks.
private:
void compute_times (ACE_Elapsed_Time &et);
// Compute how much time has elapsed.
ACE_Profile_Timer::Rusage begin_usage_;
// Keep track of the starting resource utilization.
ACE_Profile_Timer::Rusage end_usage_;
// Keep track of the ending resource utilization.
ACE_Profile_Timer::Rusage last_usage_;
// Keep track of the last rusage for incremental timing.
#if defined (ACE_HAS_PRUSAGE_T)
void subtract (timespec_t &tdiff, timespec_t &t0, timespec_t &t1);
// Substract two timestructs and store their difference.
ACE_HANDLE proc_handle_;
// I/O handle for /proc file system.
#elif defined (ACE_HAS_GETRUSAGE)
void subtract (timeval &tdiff,
timeval &t0,
timeval &t1);
// Substract two timestructs and store their difference.
timeval begin_time_;
// Keep track of the beginning time.
timeval end_time_;
// Keep track of the ending time.
timeval last_time_;
// Keep track of the last time for incremental timing.
#endif /* ACE_HAS_PRUSAGE_T */
#if defined (ACE_WIN32) || (!defined (ACE_HAS_PRUSAGE_T) && !defined (ACE_HAS_GETRUSAGE))
ACE_High_Res_Timer timer_;
// The high resolution timer
#endif /* ACE_WIN32 || !ACE_HAS_PRUSAGE_T && !ACE_HAS_GETRUSAGE */
};
#if defined (__ACE_INLINE__)
# include "ace/Profile_Timer.i"
#endif /* __ACE_INLINE__ */
#endif /* ACE_PROFILE_TIMER_H */
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