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Windows friendly replacement for gettimeofday

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This commit is contained in:
Timothee "TTimo" Besset
2013-03-31 09:10:56 -05:00
parent 574fe35b32
commit 5973b4c665
2 changed files with 68 additions and 8 deletions
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36
perf/local_thr.cpp
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@@ -26,7 +26,12 @@
#include <string.h>
#include <time.h>
#include <limits.h>
#include "platform.hpp"
#ifndef ZMQ_HAVE_WINDOWS
#include <sys/time.h>
#endif
#define ZMSG 1
#define DATA 0
@@ -41,9 +46,23 @@ struct US_TIMER{
/* Records the current timer state
*/
void tm_init( US_TIMER *t){
#if defined ZMQ_HAVE_WINDOWS
if( gettimeofday( &t->time_now, NULL) < 0){ perror( "d_timer_init()");}
// Get the high resolution counter's accuracy.
LARGE_INTEGER ticksPerSecond;
QueryPerformanceFrequency (&ticksPerSecond);
// What time is it?
LARGE_INTEGER tick;
if ( !QueryPerformanceCounter (&tick) ) { perror( "tm_init()" ); }
// Seconds
t->time_now.tv_sec = (long)( tick.QuadPart / ticksPerSecond.QuadPart );
// Microseconds
t->time_now.tv_usec = (long)( ( tick.QuadPart - t->time_now.tv_sec * ticksPerSecond.QuadPart ) * 1000000 / ticksPerSecond.QuadPart );
#else
if( gettimeofday( &t->time_now, NULL) < 0){ perror( "tm_init()");}
#endif
t->time_was = t->time_now;
}
@@ -54,9 +73,22 @@ void tm_init( US_TIMER *t){
float tm_secs( US_TIMER *t){
register float seconds;
#if defined ZMQ_HAVE_WINDOWS
// Get the high resolution counter's accuracy.
LARGE_INTEGER ticksPerSecond;
QueryPerformanceFrequency (&ticksPerSecond);
if( gettimeofday( &t->time_now, NULL) < 0){ perror( "d_timer_init()");}
// What time is it?
LARGE_INTEGER tick;
if ( !QueryPerformanceCounter (&tick) ) { perror( "tm_secs()" ); }
// Seconds
t->time_now.tv_sec = (long)( tick.QuadPart / ticksPerSecond.QuadPart );
// Microseconds
t->time_now.tv_usec = (long)( ( tick.QuadPart - t->time_now.tv_sec * ticksPerSecond.QuadPart ) * 1000000 / ticksPerSecond.QuadPart );
#else
if( gettimeofday( &t->time_now, NULL) < 0){ perror( "tm_secs()");}
#endif
seconds = ( ((float)( t->time_now.tv_sec - t->time_was.tv_sec)) +
(((float)( t->time_now.tv_usec - t->time_was.tv_usec)) / 1000000.0));