58 regels
1.3 KiB
C
58 regels
1.3 KiB
C
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//( { file_desc:"Time cand clock related functions." kw: [ time system ] }
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//
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//
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// This interface is used to read the systems high resolution timer and
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// calculate elapsed time.
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//)
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#ifndef cmTime_h
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#define cmTime_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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//(
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typedef struct timespec cmTimeSpec_t;
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// Get the time
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void cmTimeGet( cmTimeSpec_t* t );
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// Return the elapsed time (t1 - t0) in microseconds
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// t1 is assumed to be at a later time than t0.
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unsigned cmTimeElapsedMicros( const cmTimeSpec_t* t0, const cmTimeSpec_t* t1 );
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// Same as cmTimeElapsedMicros() but the times are not assumed to be ordered.
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// The function therefore begins by swapping t1 and t0 if t0 is after t1.
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unsigned cmTimeAbsElapsedMicros( const cmTimeSpec_t* t0, const cmTimeSpec_t* t1 );
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// Same as cmTimeElapsedMicros() but returns a negative value if t0 is after t1.
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int cmTimeDiffMicros( const cmTimeSpec_t* t0, const cmTimeSpec_t* t1 );
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// Returns true if t0 <= t1.
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bool cmTimeIsLTE( const cmTimeSpec_t* t0, const cmTimeSpec_t* t1 );
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// Return true if t0 >= t1.
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bool cmTimeIsGTE( const cmTimeSpec_t* t0, const cmTimeSpec_t* t1 );
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bool cmTimeIsEqual( const cmTimeSpec_t* t0, const cmTimeSpec_t* t1 );
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bool cmTimeIsZero( const cmTimeSpec_t* t0 );
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void cmTimeSetZero( cmTimeSpec_t* t0 );
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//)
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#ifdef __cplusplus
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}
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#endif
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#endif
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