NSThread provides functionality to run processes as separate threads of execution. NSThread takes a method selector that will be run in its own thread. Threads share the memory space of their parent processes, unlike processes executed by NSTask instances.

@interface NSThread : NSObject
// Convenience Constructors
+ (double)threadPriority;
// Class Methods
+ (NSThread *)currentThread;
+ (void)detachNewThreadSelector:(SEL)selector toTarget:(id)target withObject:(id)argument;
+ (void)exit;
+ (BOOL)isMultiThreaded;
+ (BOOL)setThreadPriority:(double)priority;
+ (void)sleepUntilDate:(NSDate *)date;
// Instance Methods
- (NSMutableDictionary *)threadDictionary;