NSRunLoop+blocks.h

#import <Foundation/Foundation.h>

@interface NSRunLoop (NSRunLoop_S9Blocks)
- (void)runBlock:(void (^)(void))block;
@end

NSRunLoop+blocks.m

#import "NSRunLoop+blocks.h"

@interface NSRunLoop (NSRunLoop_S9Blocks_Internal)
- (void)executeBlock:(void (^)(void))block;
@end

@implementation NSRunLoop (NSRunLoop_S9Blocks)
- (void)runBlock:(void (^)(void))block {
	[self performSelector:@selector(executeBlock:) target:self argument:[[block copy] autorelease]
					order:0 modes:[NSArray arrayWithObject:NSRunLoopCommonModes]];
}

- (void)executeBlock:(void (^)(void))block {
	block();
}
@end