Macros for measuring running times in C.

mrt_timer.h

#ifndef __mrt_timer_h__
#define __mrt_timer_h__

#include <sys/time.h>

#define mrt_timer_setup() \
	struct timeval mrt_te; \
	time_t mrt_start = 0, mrt_end = 0;

#define mrt_timer_start() \
	gettimeofday(&mrt_te, NULL); \
	mrt_start = ((time_t)mrt_te.tv_sec * 1000LL + (time_t)mrt_te.tv_usec / 1000LL); 

#define mrt_timer_stop() \
	gettimeofday(&mrt_te, NULL); \
	mrt_end = ((time_t)mrt_te.tv_sec * 1000LL + (time_t)mrt_te.tv_usec / 1000LL) - mrt_start;

#define mrt_timer_get_elapsed() mrt_end

#endif