iOS GCD集汇(三)GCD常用方法まとめ

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マルチスレッド Que キュー gcd
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#pragma mark - Serial Queue
// iOS            ，         GCD，         GCD，      API，  C   。GCD            ，GCD     dispatch queue         ， queue       。
- (void)Serial:(UIButton *)sender {
    //dispatch queue   ：serial queue（  ） concurrent queue（  ）；    queue  FIFO
    //serial queue   ：   queue      ，       ，        ，       ，    ，         ，            。
    
//    //  serial queue    2 ：
//    //1、  mainQueue。mainQueue        ， ：              
//    dispatch_queue_t mainQueue = dispatch_get_main_queue();
//    dispatch_async(mainQueue, ^{
//        NSLog(@" 1   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(mainQueue, ^{
//        NSLog(@" 2   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(mainQueue, ^{
//        NSLog(@" 3   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(mainQueue, ^{
//        NSLog(@" 4   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(mainQueue, ^{
//        NSLog(@" 5   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
    
    
    //2、    serial queue。//     serial queue         ，queue        ，               
    dispatch_queue_t mySerialQueue = dispatch_queue_create("com.HMT.GCD.mySerialQueue", DISPATCH_QUEUE_SERIAL);// queue      ，            。
    dispatch_async(mySerialQueue, ^{
        NSLog(@" 1   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(mySerialQueue, ^{
        NSLog(@" 2   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(mySerialQueue, ^{
        NSLog(@" 3   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(mySerialQueue, ^{
        NSLog(@" 4   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(mySerialQueue, ^{
        NSLog(@" 5   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    
    
}

#pragma mark - Concurrent Queue
- (void)Concurrent:(UIButton *)sender {
    //concurrent（  ）queue       。   ：      ，      ，         ，         ，           ，         ，    。         ，              。
    
//    //  concurrent queue    2 ：
//    //1、  global queue。
//    dispatch_queue_t globalQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);//       globalQueue    ，   4    DISPATCH_QUEUE_PRIORITY_HIGH、DISPATCH_QUEUE_PRIORITY_DEFAULT、DISPATCH_QUEUE_PRIORITY_LOW、DISPATCH_QUEUE_PRIORITY_BACKGROUND。            ，    ，     0.
//    //global queue            ，          （             ，             ），               ，  ：     ，         ，           ---           。
//    dispatch_async(globalQueue, ^{
//        NSLog(@" 1   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(globalQueue, ^{
//        NSLog(@" 2   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(globalQueue, ^{
//        NSLog(@" 3   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(globalQueue, ^{
//        NSLog(@" 4   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(globalQueue, ^{
//        NSLog(@" 5   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(globalQueue, ^{
//        NSLog(@" 6   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(globalQueue, ^{
//        NSLog(@" 7   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(globalQueue, ^{
//        NSLog(@" 8   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(globalQueue, ^{
//        NSLog(@" 9   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
//    dispatch_async(globalQueue, ^{
//        NSLog(@" 10   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
//    });// block        （  ）
    
    
    
    //2、    concurrent queue。
    //     concurrent queue            ，          （             ，             ），               ，  ：     ，         ，           ---           。
    dispatch_queue_t myConcurrentQueue = dispatch_queue_create("com.HMT.GCD.myConcurrentQueue", DISPATCH_QUEUE_CONCURRENT);
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@" 1   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@" 2   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@" 3   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@" 4   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@" 5   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@" 6   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@" 7   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@" 8   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@" 9   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@" 10   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });// block        （  ）
}

#pragma mark -   3 
- (void)after:(UIButton *)sender {
    double delayInSeconds = 3.0;
    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
    
//    dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
//        NSLog(@"Hello");
//    });//dispatch_after           ，      mainQueue         queue   .    serial         concurrent     。
    
    dispatch_queue_t myConcurrentQueue = dispatch_queue_create("com.HMT.GCD.myConcurrentQueue", DISPATCH_QUEUE_CONCURRENT);
    dispatch_after(popTime, myConcurrentQueue, ^(void){
        NSLog(@"world");
    });
}

#pragma mark -          ,        
- (void)group:(UIButton *)sender {
    dispatch_group_t group = dispatch_group_create();
    dispatch_queue_t myConcurrentQueue = dispatch_queue_create("com.HMT.GCD.myConcurrentQueue", DISPATCH_QUEUE_CONCURRENT);
    
    //dispatch_group_async            
    //dispatch_group_notify             ，       
    dispatch_group_async(group, myConcurrentQueue, ^{
        NSLog(@" 1   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_group_async(group, myConcurrentQueue, ^{
        NSLog(@" 2   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_group_async(group, myConcurrentQueue, ^{
        NSLog(@" 3   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_group_async(group, myConcurrentQueue, ^{
        NSLog(@" 4   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_group_notify(group, myConcurrentQueue, ^{
        NSLog(@"group           ，     。    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_group_async(group, myConcurrentQueue, ^{
        NSLog(@" 5   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_group_async(group, myConcurrentQueue, ^{
        NSLog(@" 6   ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    
}

#pragma mark - barrier
- (void)barrier:(UIButton *)sender {
    //            ，     ，      serial queue           。
    //serial queue    ：                          
    //             serial queue          。
    //           ，  serial queue      ，     。  concurrent queue       。
    //      ，           ，        。         ？
    
    //               ，              dispatch_barrier_async
    dispatch_queue_t myConcurrentQueue = dispatch_queue_create("com.HMT.GCD.myConcurrentQueue", DISPATCH_QUEUE_CONCURRENT);
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@"      ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@"        ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@"      ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@"      ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    
    
    
    dispatch_barrier_async(myConcurrentQueue, ^{
        NSLog(@"      ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });//dispatch_barrier_async     ，          ，      ，  barrier    ，           。
    
    
    
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@"  XXX  ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@"  OOXX  ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@"  aaa  ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
    dispatch_async(myConcurrentQueue, ^{
        NSLog(@"  bbb  ,    %@,      :%d",[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
}

#pragma mark -        
- (void)apply:(UIButton *)sender {
    //GCD    API          。
    NSArray *array = [NSArray arrayWithObjects:@"   ",@"   ",@"    ",@"   ", nil];

    dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
    dispatch_apply([array count], queue, ^(size_t index) {
        NSLog(@"%@    %@,      :%d",[array objectAtIndex:index],[NSThread currentThread],[[NSThread currentThread] isMainThread]);
    });
}

#pragma mark - once
- (void)once:(UIButton *)sender {
    //dispatch_once                 ，       
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        NSLog(@"     ");
        //  block    ，              。
        //            
//        static YourClass *instance = nil;
//        instance = [[YourClass alloc] init];
    });
}

#pragma mark -   
- (void)syn:(id)sender {
    //        dispatch_async,GCD    API dispatch_sync，        ？
    //dispatch_async   block   ，    dispatch_async     
    //dispatch_sync   block   ，     dispatch_sync     
    dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
//
//    dispatch_sync(queue, ^{
//        for (int i = 0; i < 10; i++) {
//            NSLog(@"%d",i);
//        }
//    });
//    NSLog(@"haha");
    
    
    dispatch_async(queue, ^{
        for (int i = 0; i < 10; i++) {
            NSLog(@"%d",i);
        }
    });
    NSLog(@"haha");
}

#pragma mark - GCD    
- (void)functionPoint:(id)sender {
    
    //dispatch_async_f         ，           ，     block   
    dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
    dispatch_async_f(queue, @"  ", function);//           ：       ，     void *。         ， dispatch_async_f       ，         。
}

void function(void *context)
{
    NSLog(@"%@     %@,      :%d",context,[NSThread currentThread],[[NSThread currentThread] isMainThread]);
}
専門の文法の支持の言語の中でmonadを使うのはみっともないです
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