IOS: Multithreaded Nsthread for detailed use

Nsthread specific use: Direct inheritance NSObject

nsthread:.Pros: Nsthread is lightweight and easy to useCons: You need to manage your thread's lifecycle and thread synchronization. Thread synchronization has a certain overhead in locking data 1. Properties@property (ReadOnly, retain) nsmutabledictionary *threaddictionary; //Threading Dictionary @property double threadpriority; //Thread Priority @property nsqualityofservice qualityofservice; //Quality of service @property (copy) nsstring *name; //thread name @property Nsuinteger stackSize; //Stack size @property (readonly) BOOL ismainthread; //is the main thread@property (readonly, getter=isexecuting) BOOL executing; //Whether the thread is executing @property (readonly, getter=isfinished) BOOL finished; //Thread execution complete @property (readonly, getter=iscancelled) BOOL cancelled; //Whether the thread is canceled 2. Notice ※ will be a multi-threaded notification
foundation_export NSString * Const nswillbecomemultithreadednotification;             ※ has become a single-threaded notificationfoundation_export NSString * Const nsdidbecomesinglethreadednotification;            ※ notification that the thread will exitfoundation_export NSString * Const nsthreadwillexitnotification; 3. Main methods※ Current Thread+ (Nsthread *) CurrentThread;※ Create a thread's class method and add an execution event

+ (void) Detachnewthreadselector: (SEL) selector totarget: (ID) target withobject: (id) argument;

※ Whether it is multi-threading

+ (BOOL) ismultithreaded;

※ Timed Sleep

+ (void) Sleepuntildate: (NSDate *) date;

※ Sleep Time

+ (void) Sleepfortimeinterval: (Nstimeinterval) ti;

※ Exit Thread

+ (void) exit;

※ Thread Priority

+ (double) threadpriority;

※ Set Thread priority

+ (BOOL) SetThreadPriority: (double) p;

※ Displays the current stack contents (returns an array of the addresses that the thread occupies in the stack)

+ (Nsarray *) callstackreturnaddresses;

※ Return the symbol of the stack space

+ (Nsarray *) Callstacksymbols;

※ is the main thread

+ (BOOL) ismainthread;

※ Create an instance method of the thread and add an execution event

-(Instancetype) Initwithtarget: (ID) Target selector: (SEL) Selector object: (id) argument;

※ Cancel Thread

-(void) cancel;

※ Start Thread

-(void) start;

※ Thread body to execute the method: Thread Body method

-(void) main;

 4, Category: @interface nsobject (nsthreadperformadditions)    

※ Call the main thread to update the UI

-(void) Performselectoronmainthread: (SEL) Aselector withobject: (ID) arg waituntildone: (BOOL) Wait modes: (Nsarray *) Array

※ Calling the main thread

-(void) Performselectoronmainthread: (SEL) Aselector withobject: (ID) arg waituntildone: (BOOL) wait;

※ Call the specified thread to update the data

-(void) Performselector: (SEL) aselector onthread: (Nsthread *) THR Withobject: (ID) arg waituntildone: (BOOL) wait modes: ( Nsarray *) array;

※ Call the specified thread

-(void) Performselector: (SEL) aselector onthread: (Nsthread *) THR Withobject: (ID) arg waituntildone: (BOOL) wait;

※ threads are called in the background

-(void) Performselectorinbackground: (SEL) Aselector withobject: (ID) arg;  

IOS: Multithreaded Nsthread for detailed use