objective-c code inline code block profiling

kmprofile.m

#define KMProfile(MSG, CODE_TO_PROFILE) {   \
    NSDate *KMStartDate = [NSDate date];    \
    NSTimeInterval KMduration;              \
    CODE_TO_PROFILE                         \
    KMduration = [[NSDate date] timeIntervalSinceDate:KMStartDate];      \
    NSLog(@"KMProfile: %@ TOOK %.0lfms (%.1lfs) ", MSG,(KMduration*1000) , KMduration); \
}


// Usage: (works well with something a bit more intensive but you get the gist)

KMProfile(@"test printf ", {
    printf("%d", 452);                  
});