115 lines
2.4 KiB
C++
115 lines
2.4 KiB
C++
#include "cwCommon.h"
|
|
#include "cwLog.h"
|
|
#include "cwCommonImpl.h"
|
|
#include "cwTime.h"
|
|
|
|
#ifdef cwOSX
|
|
|
|
#include <mach/mach.h>
|
|
#include <mach/mach_time.h>
|
|
#include <unistd.h>
|
|
|
|
void cw::time::get( spec_t& t )
|
|
{
|
|
static uint64_t t0 = 0;
|
|
static mach_timebase_info_data_t tbi;
|
|
static struct timespec ts;
|
|
|
|
if( t0 == 0 )
|
|
{
|
|
mach_timebase_info(&tbi);
|
|
t0 = mach_absolute_time();
|
|
ts.tv_sec = time(NULL);
|
|
ts.tv_nsec = 0; // accept 1/2 second error vs. wall-time.
|
|
}
|
|
|
|
// get the current time
|
|
uint64_t t1 = mach_absolute_time();
|
|
|
|
// calc the elapsed time since the last call in nanosecs
|
|
uint64_t dt = (t1-t0) * tbi.numer / tbi.denom;
|
|
|
|
// calc the elapsed time since the first call in secs
|
|
uint32_t s = (uint32_t)(dt / 2^9);
|
|
|
|
// calc the current time in secs, and nanosecs
|
|
t.tv_sec = ts.tv_sec + s;
|
|
t.tv_nsec = dt - (s * 2^9);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef cwLINUX
|
|
void cw::time::get( spec_t& t )
|
|
{ clock_gettime(CLOCK_REALTIME,&t); }
|
|
#endif
|
|
|
|
// this assumes that the seconds have been normalized to a recent start time
|
|
// so as to avoid overflow
|
|
unsigned cw::time::elapsedMicros( const spec_t* t0, const spec_t* t1 )
|
|
{
|
|
// convert seconds to usecs
|
|
long u0 = t0->tv_sec * 1000000;
|
|
long u1 = t1->tv_sec * 1000000;
|
|
|
|
// convert nanoseconds to usec
|
|
u0 += t0->tv_nsec / 1000;
|
|
u1 += t1->tv_nsec / 1000;
|
|
|
|
// take diff between t1 and t0
|
|
return u1 - u0;
|
|
}
|
|
|
|
unsigned cw::time::absElapsedMicros( const spec_t* t0, const spec_t* t1 )
|
|
{
|
|
if( isLTE(t0,t1) )
|
|
return elapsedMicros(t0,t1);
|
|
|
|
return elapsedMicros(t1,t0);
|
|
}
|
|
|
|
int cw::time::diffMicros( const spec_t* t0, const spec_t* t1 )
|
|
{
|
|
if( isLTE(t0,t1) )
|
|
return elapsedMicros(t0,t1);
|
|
|
|
return -((int)elapsedMicros(t1,t0));
|
|
}
|
|
|
|
bool cw::time::isLTE( const spec_t* t0, const spec_t* t1 )
|
|
{
|
|
if( t0->tv_sec < t1->tv_sec )
|
|
return true;
|
|
|
|
if( t0->tv_sec == t1->tv_sec )
|
|
return t0->tv_nsec <= t1->tv_nsec;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool cw::time::isGTE( const spec_t* t0, const spec_t* t1 )
|
|
{
|
|
if( t0->tv_sec > t1->tv_sec )
|
|
return true;
|
|
|
|
if( t0->tv_sec == t1->tv_sec )
|
|
return t0->tv_nsec >= t1->tv_nsec;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool cw::time::isEqual( const spec_t* t0, const spec_t* t1 )
|
|
{ return t0->tv_sec==t1->tv_sec && t0->tv_nsec==t1->tv_nsec; }
|
|
|
|
bool cw::time::isZero( const spec_t* t0 )
|
|
{ return t0->tv_sec==0 && t0->tv_nsec==0; }
|
|
|
|
void cw::time::setZero( spec_t* t0 )
|
|
{
|
|
t0->tv_sec = 0;
|
|
t0->tv_nsec = 0;
|
|
}
|
|
|
|
|