Nslock Simple Application

1 #import "AppDelegate.h"2 3 @interfaceappdelegate ()4 5 @end6 7 @implementationappdelegate8 9-(void) dealloc{Ten      One [_window release]; A [Super Dealloc]; - } -  the  --(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchoptions { -Self.window =[[UIWindow alloc]initwithframe:[uiscreen mainscreen].bounds]; -Self.window.backgroundColor =[Uicolor Blackcolor]; +      - [Self.window makekeyandvisible]; +      A [_window release]; at      -     //thread mutexes do not have their own independent stack space, all using the internal memory space of the process, so it is possible that multiple threads access the same piece of memory at the same time, there will be problems, access to the shared resources for multi-threaded is a thread mutex, add the line lock -Nslock *lk =[[Nslock alloc]init]; -      -Nsthread *thread1 = [[Nsthread alloc]initwithtarget:self selector: @selector (Therad:)Object: LK]; -      inThread1.name =@"Window No. 1th"; -      to [thread1 start]; +      -      the      *Nsthread *therad2 = [[Nsthread alloc]initwithtarget:self selector: @selector (Therad:)Object: LK]; $     Panax NotoginsengTherad2.name =@"window No. 2nd" ; -      the //therad2.threadpriority = 0.9; +      A [therad2 start]; the      +      -      $Nsthread *therad3 = [[Nsthread alloc]initwithtarget:self selector: @selector (Therad:)Object: LK]; $      -Therad3.name =@"Window No. 3rd" ; -      theTherad3.threadpriority =1 ; -     Wuyi [therad3 start]; the      -      Wu      -      About      $      -     returnYES; - } -  A  + //Mock Ticketing the-(void) Therad: (ID)Object{ -      $Nslock *lk = (Nslock *)Object ; the      the     //number of votes 100 sheets the     Static intNumber = - ; the      -      while(1) { in          the         //Add line lock to improve security of data access the[LKLock]; About          theNumber-- ; the          theNSLog (@"%@%d", [[Nsthread currentthread]name],number]; +          -           //Sleep 1 seconds theSleep1);Bayi          the         if(Number = =0) { the              Break ; -         } -          the [lk unlock]; the     } the      the}

Nslock Simple Application