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Added stop watch functions.

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FossilOrigin-Name: 72930f0c2b24c2fde1e1ddaa9d7f4bb06c82539fc0820da714e93e155471e961
This commit is contained in:
7u83@mail.ru 2015-04-12 09:03:43 +00:00
parent cd59b647cd
commit fc6318cf8f
1 changed files with 37 additions and 4 deletions
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41
src/capwap/timer.h
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@ -21,6 +21,7 @@
#define __CW_TIMER_H
#include <time.h>
#include <sys/time.h>
/**
* @defgroup TimerFunctions Timer Functions
@ -44,14 +45,46 @@
#define cw_timer_timeout(t) (time(NULL)>t ? 1 : 0)
#define cw_clock_start()\
clock()
#define cw_timevaltodouble(tv) \
(( ((1000000.0)*(double)((tv)->tv_sec) + (double)(tv)->tv_usec)) )
#define cw_clock_stop(t)\
(((double) (clock()-(t))) / CLOCKS_PER_SEC)
/**
* Define a clock variable to measure runtime (not CPU runtime, but
* ralt time). This variable can be used with #cw_clock_start
* and #cw_clock_lap.
*
* @param c name of the variable
*/
#define DEFINE_CLOCK(c)\
struct timeval c;
/**
* Start the clock (stop watch), start measuring time
* @param c a pounter to a variable defined with #DEFINE_CLOCK
*/
#define cw_clock_start(c)\
gettimeofday(c,NULL);
/**
* Get lap time. (stop watch)
* @param tv pointer to clock variable defined with #DEFINE_CLOCK
* @return lap time in seconds.
*/
static inline double cw_clock_lap(struct timeval *tv){
struct timeval lap;
gettimeofday(&lap,NULL);
return (cw_timevaltodouble(&lap)-cw_timevaltodouble(tv))/1000000.0;
}
/**
* An alias for #cw_clock_lap
*/
#define cw_clock_stop cw_clock_lap
/** @} */