VVStopwatch.h

#if IPHONE
#import <UIKit/UIKit.h>
#else
#import <Cocoa/Cocoa.h>
#endif
#include <sys/time.h>
#import <libkern/OSAtomic.h>




@interface VVStopwatch : NSObject {
    struct timeval      startTime;
    OSSpinLock          timeLock;
}

+ (id) create;

- (void) start;
- (double) timeSinceStart;
- (void) getFullTimeSinceStart:(struct timeval *)dst;
- (void) startInTimeInterval:(NSTimeInterval)t;
- (void) copyStartTimeToTimevalStruct:(struct timeval *)dst;
- (void) setStartTimeStruct:(struct timeval *)src;

@end

void populateTimevalWithFloat(struct timeval *tval, double secVal);