Sleeping for a set period of time while running the runloop

Compilation and running

$ clang -DDEBUG=1 -g -fobjc-arc -o rlsleep rlsleep.m -framework Foundation
$ ./rlsleep
2014-02-20 11:45:36.481 rlsleep[95410:707] Before 2014-02-20 11:45:36 +0000
2014-02-20 11:45:37.475 rlsleep[95410:707] Tick
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2014-02-20 11:47:36.478 rlsleep[95410:707] Tick
2014-02-20 11:47:36.486 rlsleep[95410:707] After 2014-02-20 11:47:36 +0000

rlsleep.m

#import <Foundation/Foundation.h>

@interface SomeClass : NSObject
+ (void)runRunLoopForTimeInterval:(NSTimeInterval)timeInterval;
@end

@implementation SomeClass

+ (void)runRunLoopForTimeInterval:(NSTimeInterval)timeInterval {
    NSDate *stopTime = [NSDate dateWithTimeIntervalSinceNow:timeInterval];
    while ([stopTime compare:[NSDate date]] == NSOrderedDescending) { 
        [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode
                                 beforeDate:stopTime];
   }
}

@end

@interface TimerTarget : NSObject
- (void)tick:(NSTimer *)timer;
@end

@implementation TimerTarget

- (void)tick:(NSTimer *)timer {
    NSLog(@"Tick");
}

@end

int main(int argc, const char **argv) {
    @autoreleasepool {
        TimerTarget *target = [TimerTarget new];
        NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:1.0
                                                          target:target
                                                        selector:@selector(tick:)
                                                        userInfo:nil
                                                         repeats:YES];
        NSLog(@"Before %@", [NSDate date]);
        [SomeClass runRunLoopForTimeInterval:2 * 60];
        NSLog(@"After %@", [NSDate date]);

        [timer invalidate];
    }
    return 0;
}