Small benchmark code to test performance of Sparrow's "SPPoolObject".

SPPoolObjectBenchmark.m

#import <QuartzCore/QuartzCore.h> // for CACurrentMediaTime()

- (void)runPoolBenchmark
{
    double startTime, endTime;
    const int NumObjects = 1000000;
    typedef SPMatrix SPObject;
    
    [SPObject purgePool];
    NSMutableArray *array = [NSMutableArray arrayWithCapacity:NumObjects];
    
    NSLog(@"Filling pool with %d objects ...", NumObjects);
    
    @autoreleasepool
    {
        for (int i=0; i<NumObjects; ++i)
            array[i] = [[SPObject alloc] init];
        
        [array removeAllObjects];
    }
    
    NSLog(@"Starting pool test ...");

    @autoreleasepool
    {
        startTime = CACurrentMediaTime();
        
        for (int i=0; i<NumObjects; ++i)
            array[i] = [[SPObject alloc] init];
        
        endTime = CACurrentMediaTime();
        [array removeAllObjects];
    }
    
    double duration = endTime - startTime;
    NSLog(@"Created %d objects in %.5f seconds", NumObjects, duration);
    NSLog(@"(That's %d objects per second)", (int)(NumObjects / duration));

    int poolSize = [SPObject purgePool];
    NSLog(@"Purged pool, contained %d objects", poolSize);
}