Reusing suspended dispatch_queue_t - iOS

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I have an application which on user logout would suspend all threads. If the user relogin's we need to restart this queue.

I have added all the dispatch_queue_t object to an array. When the user logouts, I iterate through this array and suspend them as below:

     - (void)suspendAllQueues{
             for (dispatch_queue_t queue in self.dispatchQueueArray) {
                NSLog(@"queue: %@",queue);
                dispatch_suspend(queue);
             }
       }

The queues are defined inside the singleton (init) method

+ (APIManager *)sharedInstance
  {
      static APIManager *sharedInstance = nil;
      static dispatch_once_t onceToken;
      dispatch_once(&onceToken, ^{
        allowInstantiation = YES;
        sharedInstance = [[APIManager alloc] init];
        allowInstantiation = NO;
       });
      return sharedInstance;
  }

- (id)init
  {
     if (!allowInstantiation) NSLog(@"Instantiation of singleton not allowed.");
     if (!(self = [super init])) return nil;
     // Async queue for updating user information
       updateUserInfoQueue = dispatch_queue_create("com.test.updateuserinfoqueue", DISPATCH_QUEUE_SERIAL);

     // Async queue for logging in , facebook login and registration login
       loginoutQueue = dispatch_queue_create("com.test.loginoutqueue", DISPATCH_QUEUE_SERIAL);

    //Async queue for general tasks (password reset, email verification   and social sharing)
      generalAsyncQueue = dispatch_queue_create("com.test.generalasyncqueue", DISPATCH_QUEUE_SERIAL);


    self.dispatchQueueArray= [NSMutableArray new];

    return self;
 }

When I tried to load a method using the generalAsyncQueue it doesn't start. I suspended the queue on logout. What would be a better method to stop the method called by generalAsyncQueue?

asked 59 secs ago

Siddharthan Asokan

374

Reusing suspended dispatch_queue_t - iOS