ios多线程之NSThread头文件详解

1、NSThread
头文件中的相关方法
//获取当前线程
 +(NSThread *)currentThread;
//创建线程后自动启动线程
+ (void)detachNewThreadSelector:(SEL)selector toTarget:(id)target withObject:(id)argument;
//是否是多线程
+ (BOOL)isMultiThreaded;
//线程字典
- (NSMutableDictionary *)threadDictionary;
//线程休眠到什么时间
+ (void)sleepUntilDate:(NSDate *)date;
//线程休眠多久
+ (void)sleepForTimeInterval:(NSTimeInterval)ti;
//退出线程
+ (void)exit;

//线程优先级
+ (double)threadPriority;
+ (BOOL)setThreadPriority:(double)p;

- (double)threadPriority NS_AVAILABLE(10_6, 4_0);
- (void)setThreadPriority:(double)p NS_AVAILABLE(10_6, 4_0);

//调用栈返回地址
+ (NSArray *)callStackReturnAddresses NS_AVAILABLE(10_5, 2_0);
+ (NSArray *)callStackSymbols NS_AVAILABLE(10_6, 4_0);

//设置线程名字
- (void)setName:(NSString *)n NS_AVAILABLE(10_5, 2_0);
- (NSString *)name NS_AVAILABLE(10_5, 2_0);

//获取栈的大小
- (NSUInteger)stackSize NS_AVAILABLE(10_5, 2_0);
- (void)setStackSize:(NSUInteger)s NS_AVAILABLE(10_5, 2_0);

//是否是主线程
- (BOOL)isMainThread NS_AVAILABLE(10_5, 2_0);
+ (BOOL)isMainThread NS_AVAILABLE(10_5, 2_0); // reports whether current thread is main
+ (NSThread *)mainThread NS_AVAILABLE(10_5, 2_0);

- (id)init NS_AVAILABLE(10_5, 2_0);	// designated initializer
- (id)initWithTarget:(id)target selector:(SEL)selector object:(id)argument NS_AVAILABLE(10_5, 2_0);

//是否正在执行
- (BOOL)isExecuting NS_AVAILABLE(10_5, 2_0);
//是否执行完成
- (BOOL)isFinished NS_AVAILABLE(10_5, 2_0);

//是否取消线程
- (BOOL)isCancelled NS_AVAILABLE(10_5, 2_0);
- (void)cancel NS_AVAILABLE(10_5, 2_0);

//线程启动
- (void)start NS_AVAILABLE(10_5, 2_0);

- (void)main NS_AVAILABLE(10_5, 2_0);	// thread body method

@end

//多线程通知
FOUNDATION_EXPORT NSString * const NSWillBecomeMultiThreadedNotification;
FOUNDATION_EXPORT NSString * const NSDidBecomeSingleThreadedNotification;
FOUNDATION_EXPORT NSString * const NSThreadWillExitNotification;

@interface NSObject (NSThreadPerformAdditions)

//与主线程通信
- (void)performSelectorOnMainThread:(SEL)aSelector withObject:(id)arg waitUntilDone:(BOOL)wait modes:(NSArray *)array;
- (void)performSelectorOnMainThread:(SEL)aSelector withObject:(id)arg waitUntilDone:(BOOL)wait;
	// equivalent to the first method with kCFRunLoopCommonModes

//与其他子线程通信
- (void)performSelector:(SEL)aSelector onThread:(NSThread *)thr withObject:(id)arg waitUntilDone:(BOOL)wait modes:(NSArray *)array NS_AVAILABLE(10_5, 2_0);
- (void)performSelector:(SEL)aSelector onThread:(NSThread *)thr withObject:(id)arg waitUntilDone:(BOOL)wait NS_AVAILABLE(10_5, 2_0);
	// equivalent to the first method with kCFRunLoopCommonModes

//隐式创建并启动线程
- (void)performSelectorInBackground:(SEL)aSelector withObject:(id)arg NS_AVAILABLE(10_5, 2_0);