Operation (Custom multithreading)

//

Viewcontroller.m

ui-no-25

//

Created by Bruce on 15/8/27.

Copyright (c) 2015 Bruce. All rights reserved.

//

#import "ViewController.h"

@interface Viewcontroller ()

@end

@implementation Viewcontroller

-(void) Viewdidload {

[Super Viewdidload];

You cannot use operation directly because there is no way to manipulate it directly, just a base class (abstract class)

Nsinvocationoperation *invocation = [[nsinvocationoperation alloc]initwithtarget:self selector: @selector (act:) object:@ "Invocation"];

If you use operation alone you must start manually

[Invocation start];

Operation default on current thread execution (synchronous execution)

Nsinvocationoperation *invocation1 = [[nsinvocationoperation alloc]initwithtarget:self selector: @selector (act:) object:@ "Invocation1"];

If you use operation alone you must start manually

Nsinvocationoperation *invocation2 = [[nsinvocationoperation alloc]initwithtarget:self selector: @selector (act:) object:@ "Invocation2"];

Nsinvocationoperation *invocation3 = [[nsinvocationoperation alloc]initwithtarget:self selector: @selector (act:) object:@ "Invocation3"];

Nsinvocationoperation *invocation4 = [[nsinvocationoperation alloc]initwithtarget:self selector: @selector (act:) object:@ "Invocation4"];

Nsoperationqueue do not manually start the thread so comment out start

[Invocation1 start];

Operation default on current thread execution (synchronous execution)

Nsblockoperation *blockoperation = [Nsblockoperation blockoperationwithblock:^{

Specific methods of implementation

[Self act:@ "blockoperation"];

}];

Add action

Nsblockoperation the number of operands is greater than 1 will open thread execution

[Blockoperation addexecutionblock:^{

[Self act:@ "blockOperation2"];

}];

[Blockoperation start];

Operation default on current thread execution (synchronous execution)

Nsoperationqueue (thread queue) management thread (default will open thread to execute)

Nsoperationqueue do not manually start the thread

Asynchronous execution

Nsoperationqueue *queue = [[Nsoperationqueue alloc]init];

Sets the maximum number of concurrent threads in a queue (can allow several operations to execute concurrently)

Queue.maxconcurrentoperationcount = 1;

[Queue addoperation:invocation];

[Queue Addoperation:invocation1];

[Queue Addoperation:invocation2];

[Queue Addoperation:invocation3];

[Queue Addoperation:invocation4];

[Queue addoperation:blockoperation];

}

-(void) Act: (ID) sender

{

NSLog (@ "%@\n%@", [Nsthread Currentthread],sender);

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

Dispose of any resources the can be recreated.

}

@end

Operation (Custom multithreading)