ViewController.m#

//
//  ViewController.m
//  多线程NSOperationQueue
//

//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

//---------------------- NSOperationQueue 1 -----------------------
 /*
//1.创建线程队列(线程池)
    
    NSOperationQueue *queue = [[NSOperationQueue alloc] init];
    
    //会开启一个多线程,调用block
    
    [queue addOperationWithBlock:^{
        
        for (int i = 0; i < 50; i ++) {
            NSLog(@"子线程:%d", i);
        }
        
    }];
    
//主线程
    for (int i = 0; i < 50; i ++) {
        NSLog(@"主线程:%d", i);
    }
    

*/
//---------------------- NSOperationQueue 2 -----------------------
    

//1.创建线程队列(线程池)
    
    NSOperationQueue *queue = [[NSOperationQueue alloc] init];
    
//2.设置线程池最大并发数
    
    queue.maxConcurrentOperationCount = 1;
    
//3.创建2个线程
    
    NSInvocationOperation *operation1 = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(thread1) object:nil];
    
    NSInvocationOperation *operation2 = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(thread2) object:nil];
//设置优先级
    
    [operation1 setQueuePriority:NSOperationQueuePriorityVeryLow];//operation1最后执行
    
//4.将线程添加到线程池里
    
    [queue addOperation:operation1];
    [queue addOperation:operation2];
 
// //主线程
    for (int i = 0; i < 300; i ++) {
        NSLog(@"主线程:%d", i);
    }




}
    

    
    
    
    
    
-(void)thread1 {
    for (int i = 0; i < 50; i++) {
        NSLog(@"thread1:%d",i);
    }
    
}


-(void)thread2 {
    for (int i = 0; i < 50; i++) {
        NSLog(@"thread2:%d",i);
    }
    
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end