time.c File Reference

Utility functions to track process time. More...

#include <jwsc/config.h>
#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <unistd.h>
#include <sys/times.h>
#include "jwsc/base/time.h"

Include dependency graph for time.c:

Go to the source code of this file.

Functions
void	start_timer (Timer *t)
	Starts the timer by initializing it to the current process time.
void	stop_timer (Timer *t)
	Stops the timer by differencing a started timer with the current process time.
void	add_time_to_timer (Timer *t_1, const Timer *t_2)
	Adds time from one timer to another.
void	zero_timer (Timer *t)
	Initializes a timer to zero.
user_time
Returns the user time of a Timer.
double	user_time_s (const Timer *t)
	Returns the user time in seconds.
double	user_time_ms (const Timer *t)
	Returns the user time in milliseconds.
sys_time
Returns the system time of a Timer.
double	sys_time_s (const Timer *t)
	Returns the system time of a Timer in seconds.
double	sys_time_ms (const Timer *t)
	Returns the system time of a Timer in milliseconds.
proc_user_time
Returns the current ellapsed process user time.
double	proc_user_time_s ()
	Returns the current ellapsed process user time in seconds.
double	proc_user_time_ms ()
	Returns the current ellapsed process user time in milliseconds.
proc_sys_time
Returns the current ellapsed process system time.
double	proc_sys_time_s ()
	Returns the current ellapsed process system time in seconds.
double	proc_sys_time_ms ()
	Returns the system time of a Timer in milliseconds.

---

Detailed Description

Utility functions to track process time.

Author:

Joseph Schlecht

License:

Creative Commons BY-NC-SA 3.0

Definition in file time.c.

---

Function Documentation

void start_timer

(

Timer *

t

)

Starts the timer by initializing it to the current process time.

Parameters:

t	Timer structure to initialize.

Definition at line 60 of file time.c.

void stop_timer

(

Timer *

t

)

Stops the timer by differencing a started timer with the current process time.

Parameters:

t	Timer structure to stop.

Definition at line 69 of file time.c.

void add_time_to_timer	(	Timer *	t_1,
		const Timer *	t_2
	)

Adds time from one timer to another.

Parameters:

t_1	Timer to add to.
t_2	Timer to add from.

Definition at line 86 of file time.c.

void zero_timer

(

Timer *

t

)

Initializes a timer to zero.

Parameters:

t	Timer to zero.

Definition at line 96 of file time.c.

double user_time_s

(

const Timer *

t

)

Returns the user time in seconds.

Definition at line 112 of file time.c.

double user_time_ms

(

const Timer *

t

)

Returns the user time in milliseconds.

Definition at line 118 of file time.c.

double sys_time_s

(

const Timer *

t

)

Returns the system time of a Timer in seconds.

Definition at line 134 of file time.c.

double sys_time_ms

(

const Timer *

t

)

Returns the system time of a Timer in milliseconds.

Definition at line 140 of file time.c.

double proc_user_time_s

(

)

Returns the current ellapsed process user time in seconds.

Definition at line 156 of file time.c.

double proc_user_time_ms

(

)

Returns the current ellapsed process user time in milliseconds.

Definition at line 166 of file time.c.

double proc_sys_time_s

(

)

Returns the current ellapsed process system time in seconds.

Definition at line 185 of file time.c.

double proc_sys_time_ms

(

)

Returns the system time of a Timer in milliseconds.

Definition at line 195 of file time.c.