59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
|
|
//( { file_desc:"Time cand clock related functions." kw: [ time system ] }
|
|
//
|
|
//
|
|
// This interface is used to read the systems high resolution timer and
|
|
// calculate elapsed time.
|
|
//)
|
|
|
|
|
|
#ifndef cwTime_H
|
|
#define cwTime_H
|
|
|
|
namespace cw
|
|
{
|
|
namespace time
|
|
{
|
|
|
|
//(
|
|
typedef struct timespec spec_t;
|
|
|
|
// Get the time
|
|
void get( spec_t& tRef );
|
|
|
|
// Return the elapsed time (t1 - t0) in microseconds
|
|
// t1 is assumed to be at a later time than t0.
|
|
unsigned elapsedMicros( const spec_t* t0, const spec_t* t1 );
|
|
|
|
// Wrapper on elapsedMicros()
|
|
unsigned elapsedMs( const spec_t* t0, const spec_t* t1 );
|
|
|
|
// Same as elapsedMicros() but the times are not assumed to be ordered.
|
|
// The function therefore begins by swapping t1 and t0 if t0 is after t1.
|
|
unsigned absElapsedMicros( const spec_t* t0, const spec_t* t1 );
|
|
|
|
|
|
// Same as elapsedMicros() but returns a negative value if t0 is after t1.
|
|
int diffMicros( const spec_t* t0, const spec_t* t1 );
|
|
|
|
|
|
// Returns true if t0 <= t1.
|
|
bool isLTE( const spec_t* t0, const spec_t* t1 );
|
|
|
|
// Return true if t0 >= t1.
|
|
bool isGTE( const spec_t* t0, const spec_t* t1 );
|
|
|
|
bool isEqual( const spec_t* t0, const spec_t* t1 );
|
|
|
|
bool isZero( const spec_t* t0 );
|
|
|
|
void setZero( spec_t* t0 );
|
|
|
|
//)
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|