stopwatch.h File Reference

#include "config_manual.h"
#include <time.h>
#include <unistd.h>
#include <sys/times.h>
#include <sys/time.h>

Include dependency graph for stopwatch.h:

Go to the source code of this file.

Classes
class	stopw_base
	base class for all the stop watches to minimize code duplication More...
class	stopwatch
class	stopwatch_u
	Stopwatch class using times() to measure userspace CPU time of ourselves and our children. More...
class	stopwatch_us
	Stopwatch class using times() to measure userspace and system CPU time of ourselves and our children. More...
class	stopwatch_e
	Stopwatch class using gettimeofday() / _ftime() / time() to measure elapsed (= wall clock) time. More...
Defines
#define	CLK_TCK   ((clock_t) sysconf (_SC_CLK_TCK))
	This whole CLOCKS_PER_SEC and CLK_TCK business is terribly FUCKED UP ! We need CLK_TCK, as it gives the REAL resolution, but somebody (POSIX?) decided it should not be there.
#define	LONG_MIN   (-2147483647L - 1L)
#define	CPS   CLOCKS_PER_SEC

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Detailed Description

Implementation of timing functions with stopwatch like semantics.

originally from Template Numerical Toolkit (TNT) for Linear Algebra

R. Pozo Applied and Computational Mathematics Division National Institute of Standards and Technology

Author:

R. Pozo

K. Garloff

Date:

98/08/19

Version:

Id

stopwatch.h,v 1.14.2.19 2006/08/14 18:43:05 garloff Exp

Definition in file stopwatch.h.

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Define Documentation

#define CLK_TCK   ((clock_t) sysconf (_SC_CLK_TCK))

This whole CLOCKS_PER_SEC and CLK_TCK business is terribly FUCKED UP ! We need CLK_TCK, as it gives the REAL resolution, but somebody (POSIX?) decided it should not be there.

Therefore this crazy hack.

Todo:

REAL solution for CLK_TCK related stuff!

Definition at line 58 of file stopwatch.h.

#define CPS   CLOCKS_PER_SEC

Definition at line 78 of file stopwatch.h.

#define LONG_MIN   (-2147483647L - 1L)

Definition at line 68 of file stopwatch.h.