IOS_다 중 루틴NSThread+NSOperation+GCD(Grand Central Dispatcher)
32827 단어 thread다 중 스 레 드iosgcdNSOperation
// ViewController.h
//
// Created by apple on 13-7-29.
// Copyright (c) 2013 itcast. All rights reserved.
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
//
@property (weak, nonatomic) IBOutlet UITextView *infoTextView;
// ,NSThread
- (IBAction)threadSales:(id)sender;
@end
H:/0729/01_대상 방법 생 성 NSThread + 잠 금 + 티켓 팅ViewController.m
// ViewController.m
//
// Created by apple on 13-7-29.
// Copyright (c) 2013 itcast. All rights reserved.
#import "ViewController.h"
@interface ViewController ()
{
NSInteger _tickets;
// ，
NSLock *_lock;
}
@end
@implementation ViewController
// TextView ， ， 。
// 1.
// 2.
// 3.
// UI
- (void)appendTextView:(NSString *)text
{
// UI
NSMutableString *str = [NSMutableString stringWithString:_infoTextView.text];
//
[str appendFormat:@"
%@", text];
NSLog(@"after append, text %@", str);
// UI
[_infoTextView setText:str];
//
// ， NSRange
// NSRange
NSRange range = NSMakeRange(str.length, 1);
[_infoTextView scrollRangeToVisible:range];
}
#pragma mark - NSThread
// NSThread ，
- (void)threadSaleMethod
{
// 1.
// 2. ，
// 3. -1
// 4.
// ： threadSaleMethod ， ！！！
// ： ， ： ， ，
// 。
// ：
// 1. ，
if (_lock == nil) {
_lock = [[NSLock alloc]init];
}
// , ,
// 2. ，
// 3. ，
// while ， ！
while (YES) {
// , >0, UI, --,
[_lock lock];
if (_tickets > 0) {
NSString *str = [NSString stringWithFormat:@" %d， %@",
_tickets, [[NSThread currentThread]name]];
// UI
// withObject ,waitUntilDone ：
[self performSelectorOnMainThread:@selector(appendTextView:) withObject:str waitUntilDone:YES];
_tickets--;
// ， , ，
[_lock unlock];
//
if ([[[NSThread currentThread]name] isEqualToString:@" -1"]) {
[NSThread sleepForTimeInterval:0.2];
} else {
[NSThread sleepForTimeInterval:1.0];
}
} else {
//
NSString *str = [NSString stringWithFormat:@" %@", [[NSThread currentThread]name]];
[self performSelectorOnMainThread:@selector(appendTextView:) withObject:str waitUntilDone:YES];
NSLog(@"%@", str);
//
break;
}
}
}
// ,NSThread ，
- (IBAction)threadSales:(id)sender
{
// 1.
_tickets = 20;
// 2. ，
//
// [self threadSaleMethod];
// 1,
NSThread *thread1 = [[NSThread alloc]initWithTarget:self
selector:@selector(threadSaleMethod) object:nil];
// ,
[thread1 setName:@" 1"];
//
[thread1 start];
// 2,
NSThread *thread2 = [[NSThread alloc]initWithTarget:self
selector:@selector(threadSaleMethod) object:nil];
// ,
[thread2 setName:@" 2"];
// NSThread ， start,
[thread2 start];
}
@end
H:/0729/02_스 레 드 + NSOperation + Grand Central Dispatcher + 티켓 팅ViewController.h
//
// ViewController.h
//
//
// Created by apple on 13-7-29.
// Copyright (c) 2013 itcast. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
//
@property (weak, nonatomic) IBOutlet UITextView *infoTextView;
// NSThread
- (IBAction)threadSales:(id)sender;
// NSInvocationOperation
- (IBAction)invocationSales:(id)sender;
// NSBlockOperation
- (IBAction)blockSales:(id)sender;
// GCD
- (IBAction)gcdSales:(id)sender;
@end
H:/0729/02_스 레 드 + NSOperation + Grand Central Dispatcher + 티켓 팅ViewController.m
</pre><pre name="code" class="objc">// ViewController.m
//
// Created by apple on 13-7-29.
// Copyright (c) 2013 itcast. All rights reserved.
#import "ViewController.h"
@interface ViewController ()
{
NSInteger _tickets;
// ，
NSLock *_lock;
}
@end
@implementation ViewController
// TextView ， ， 。
// 1.
// 2.
// 3.
//
- (void)appendTextView:(NSString *)text
{
NSMutableString *str = [NSMutableString stringWithString:_infoTextView.text];
[str appendFormat:@"
%@", text];
// NSLog(@"append text %@", str);
[_infoTextView setText:str];
//
// ， NSRange
// NSRange
NSRange range = NSMakeRange(str.length, 1);
[_infoTextView scrollRangeToVisible:range];
}
#pragma mark - NSThread
// NSThread ，
- (void)threadSaleMethod
{
// 1.
// 2. ，
// 3. -1
// 4.
// ： threadSaleMethod ， ！！！
// ： ， ： ， ，
// 。
// ：
// 1. ，
if (_lock == nil) {
_lock = [[NSLock alloc]init];
}
//
// NSLock *lock = [[NSLock alloc]init];
// 2. ，
// 3. ，
// while ， ！
while (YES) {
//
[_lock lock];
if (_tickets > 0) {
// ，
NSString *str = [NSString stringWithFormat:@" %d， %@", _tickets, [[NSThread currentThread]name]];
//
//
// [self appendTextView:@"12"];
// waitUntilDone ：
[self performSelectorOnMainThread:@selector(appendTextView:) withObject:str waitUntilDone:YES];
_tickets--;
// ，
[_lock unlock];
// ?? ？
if ([[[NSThread currentThread]name] isEqualToString:@" -1"]) {
[NSThread sleepForTimeInterval:0.2];
} else {
[NSThread sleepForTimeInterval:0.3];
}
} else {
//
[_lock unlock];
//
// ，
NSString *str = [NSString stringWithFormat:@" %@", [[NSThread currentThread]name]];
[self performSelectorOnMainThread:@selector(appendTextView:) withObject:str waitUntilDone:YES];
NSLog(@"%@", str);
//
break;
}
}
}
// NSThread ，
- (IBAction)threadSales:(id)sender
{
// 1.
_tickets = 100;
// 2. ，
//
// [self threadSaleMethod];
// 1
NSThread *thread1 = [[NSThread alloc]initWithTarget:self
selector:@selector(threadSaleMethod) object:nil];
//
[thread1 setName:@" -1"];
//
[thread1 start];
// 2
NSThread *thread2 = [[NSThread alloc]initWithTarget:self
selector:@selector(threadSaleMethod) object:nil];
[thread2 setName:@" -2"];
// NSThread ， start，
[thread2 start];
}
#pragma mark - NSOperation , , UI
// NSOperation ，
- (void)operationSaleMethod:(NSString *)operationName
{
// —— ， ！！！
// 1.
// 2.
// 3. -1
// 4.
while (YES) {
//
if (_tickets > 0) {
[[NSOperationQueue mainQueue]addOperationWithBlock:^{
NSString *str = [NSString stringWithFormat:@" ：%d， ：%@", _tickets, operationName];
// UI
[self appendTextView:str];
//
_tickets--;
}];
#warning
if ([operationName isEqualToString:@"Operation - 1"] || [operationName isEqualToString:@"Block - 1"]) {
[NSThread sleepForTimeInterval:0.2];
} else {
[NSThread sleepForTimeInterval:1.0];
}
} else {
[[NSOperationQueue mainQueue]addOperationWithBlock:^{
NSString *str = [NSString stringWithFormat:@" ， ：%@", operationName];
// UI
[self appendTextView:str];
}];
break;
}
}
}
//NSInvocationOperation , UI
- (IBAction)invocationSales:(id)sender
{
_tickets = 20;
// 1.
// 1.1. ，NSThread
// 1.2. id ， ， 。
NSInvocationOperation *operation1 = [[NSInvocationOperation alloc]initWithTarget:self
selector:@selector(operationSaleMethod:) object:@"Operation - 1"];
NSInvocationOperation *operation2 = [[NSInvocationOperation alloc]initWithTarget:self
selector:@selector(operationSaleMethod:) object:@"Operation - 2"];
// ？
// 2.
NSOperationQueue *queue = [[NSOperationQueue alloc]init];
// 3. ,
[queue addOperation:operation1];
[queue addOperation:operation2];
}
// NSOperationQueue with Block , UI
- (IBAction)blockSales:(id)sender
{
_tickets = 20;
NSOperationQueue *queue = [[NSOperationQueue alloc]init];
[queue addOperationWithBlock:^{
[self operationSaleMethod:@"Block - 1"];
}];
[queue addOperationWithBlock:^{
[self operationSaleMethod:@"Block - 2"];
}];
[queue addOperationWithBlock:^{
[self operationSaleMethod:@"Block - 3"];
}];
[queue setMaxConcurrentOperationCount:2];
}
#pragma mark - GCD
//
- (void)gcdSaleMethod:(NSString *)gcdName
{
// 1.
// 2.
// 3. -1
// 4.
while (YES) {
if (_tickets > 0) {
// 1.
// 2. ，
dispatch_async(dispatch_get_main_queue(), ^{
NSString *str = [NSString stringWithFormat:@" ：%d, ：%@", _tickets, gcdName];
[self appendTextView:str];
_tickets--;
});
//
if ([gcdName isEqualToString:@"GCD-1"]) {
[NSThread sleepForTimeInterval:0.2];
} else {
[NSThread sleepForTimeInterval:1.0];
}
} else {
// , , ,
break;
}
}
}
- (IBAction)gcdSales:(id)sender
{
_tickets = 20;
// 1.
// 0
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
// 2.
dispatch_group_t group = dispatch_group_create();
// 3. ，
// ， ， ， 。
dispatch_group_async(group, queue, ^{
[self gcdSaleMethod:@"GCD-1"];
});
dispatch_group_async(group, queue, ^{
[self gcdSaleMethod:@"GCD-2"];
});
// 4. , 2 UI, ,
dispatch_group_notify(group, dispatch_get_main_queue(), ^{
// ！—— UI
[self appendTextView:@" ！"];
});
}
@end
H:/0729/03_클래스 방법 생 성 NSThread + 그림 다운로드ViewController.h
//
// ViewController.h
//
//
// Created by apple on 13-7-29.
// Copyright (c) 2013 itcast. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
//
@property (strong, nonatomic) IBOutletCollection(UIImageView) NSArray *imageViews;
// NSThread
- (IBAction)threadDownload:(id)sender;
@end
H:/0729/03_클래스 방법 생 성 NSThread + 그림 다운로드ViewController.m
// ViewController.m
//
// Created by apple on 13-7-29.
// Copyright (c) 2013 itcast. All rights reserved.
#import "ViewController.h"
@interface ViewController ()
{
NSInteger _imageIndex;
}
@end
@implementation ViewController
// ， ， ， URL
- (NSURL *)imageURL
{
// ， 17 ， 17 URL
// URL
// 1. String
// 1.1 1~17 ，
NSInteger index = arc4random() % 17 + 1;
NSString *string = [NSString stringWithFormat:@"http://teacher.local/~apple/itcast/images/nat/NatGeo%02d.png", index];
// 2. URLWithString
return [NSURL URLWithString:string];
}
#pragma mark - NSThread
//
- (void)updateImages:(UIImage *)image
{
//
// ， ，
//
//
// ++， 4
// 4？
// ， ，
_imageIndex = _imageIndex % 4;
UIImageView *imageView = _imageViews[_imageIndex];
[imageView setImage:image];
_imageIndex++;
}
// URL， URL
- (void)threadDownloadImage:(NSURL *)imageURL
{
// 1. URL NSData；
// 2. NSData ；
// ， ，
NSData *data = [NSData dataWithContentsOfURL:imageURL];
UIImage *image = [UIImage imageWithData:data];
//
// 1. UI ，
// ，
// ， image ，
if (image != nil) {
[self performSelectorOnMainThread:@selector(updateImages:)
withObject:image waitUntilDone:YES];
}
}
- (IBAction)threadDownload:(id)sender
{
// 1.
// 1.1.
// 1.2.
// 2.
// ，
// ， ， object
// 4 ，
for (NSInteger i = 0; i < 4; i++) {
[NSThread detachNewThreadSelector:@selector(threadDownloadImage:)
toTarget:self withObject:[self imageURL]];
}
}
@end
H:/0729/04_다 중 루틴ViewController.h
//
// ViewController.h
// Tickets
//
// Created by liufan on 13-7-27.
// Copyright (c) 2013 itcast. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
//
@property (weak, nonatomic) IBOutlet UITextView *infoTextView;
// NSThread
- (IBAction)threadSales:(id)sender;
// NSBlockOperation
- (IBAction)operationSales:(id)sender;
// NSInvocationOperation
- (IBAction)invocationSales:(id)sender;
// GCD
- (IBAction)gcdSales:(id)sender;
@end
H:/0729/04_다 중 루틴ViewController.m
//
// ViewController.m
// Tickets
//
// Created by liufan on 13-7-27.
// Copyright (c) 2013 itcast. All rights reserved.
//
#import "ViewController.h"
@interface ViewController ()
{
// ，
int _tickets;
// ，NSThread
NSLock *_threadLock;
}
@end
@implementation ViewController
//
- (void)appendTextView:(NSString *)text
{
NSMutableString *str = [NSMutableString stringWithString:[_infoTextView text]];
[str appendFormat:@"
%@", text];
NSRange range = NSMakeRange(str.length, 1);
[_infoTextView setText:str];
//
[_infoTextView scrollRangeToVisible:range];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - NSThread
// NSThread
- (void)threadSaleMethod
{
// ，
if (_threadLock == nil) {
_threadLock = [[NSLock alloc]init];
}
// 1. > 0
// 1.1.
// 1.2.
// 1.3.
// 2.
while (YES) {
//
[_threadLock lock];
if (_tickets > 0) {
NSString *str = [NSString stringWithFormat:@" ：%d， ：%@", _tickets, [[NSThread currentThread]name]];
// UI
[self performSelectorOnMainThread:@selector(appendTextView:) withObject:str waitUntilDone:YES];
_tickets--;
//
[_threadLock unlock];
//
if ([[[NSThread currentThread]name] isEqualToString:@" -1"]) {
[NSThread sleepForTimeInterval:1.0f];
} else {
[NSThread sleepForTimeInterval:0.1f];
}
} else {
//
[_threadLock unlock];
NSString *str = [NSString stringWithFormat:@" ， ：%@", [[NSThread currentThread]name]];
// UI
[self performSelectorOnMainThread:@selector(appendTextView:) withObject:str waitUntilDone:YES];
break;
}
}
}
// NSThread
- (IBAction)threadSales:(id)sender
{
// ， ！
_tickets = 20;
// 1
NSThread *thread1 = [[NSThread alloc]initWithTarget:self selector:@selector(threadSaleMethod) object:nil];
// ， ，
[thread1 setName:@" -1"];
// 1
[thread1 start];
// 2，
NSThread *thread2 = [[NSThread alloc]initWithTarget:self selector:@selector(threadSaleMethod) object:nil];
[thread2 setName:@" -2"];
[thread2 start];
}
#pragma mark - NSOperation
// NSOperation
- (void)operationSaleMethod:(NSString *)operationName
{
while (YES) {
if (_tickets > 0) {
//
[[NSOperationQueue mainQueue]addOperationWithBlock:^{
NSString *str = [NSString stringWithFormat:@" ：%d， ：%@", _tickets, operationName];
[self appendTextView:str];
_tickets--;
}];
//
if ([operationName isEqualToString:@" -1"]) {
[NSThread sleepForTimeInterval:0.1f];
} else {
[NSThread sleepForTimeInterval:0.2f];
}
} else {
//
[[NSOperationQueue mainQueue]addOperationWithBlock:^{
NSString *str = [NSString stringWithFormat:@" ， ：%@", operationName];
[self appendTextView:str];
}];
break;
}
}
}
// NSBlockOperation
- (IBAction)operationSales:(id)sender
{
// ， ！
_tickets = 20;
//
NSOperationQueue *queue = [[NSOperationQueue alloc]init];
[queue addOperationWithBlock:^{
[self operationSaleMethod:@" -1"];
}];
[queue addOperationWithBlock:^{
[self operationSaleMethod:@" -2"];
}];
[queue addOperationWithBlock:^{
[self operationSaleMethod:@" -3"];
}];
//
[queue setMaxConcurrentOperationCount:2];
}
// NSInvocationOperation
- (IBAction)invocationSales:(id)sender
{
// ， ！
_tickets = 20;
// 1
NSInvocationOperation *operation1 = [[NSInvocationOperation alloc]initWithTarget:self selector:@selector(operationSaleMethod:) object:@" -1"];
// 2
NSInvocationOperation *operation2 = [[NSInvocationOperation alloc]initWithTarget:self selector:@selector(operationSaleMethod:) object:@" -2"];
//
NSOperationQueue *queue = [[NSOperationQueue alloc]init];
[queue addOperation:operation1];
[queue addOperation:operation2];
}
#pragma mark - GCD
// GCD
- (void)gcdSaleMethod:(NSString *)gcdName
{
while (YES) {
if (_tickets > 0) {
//
dispatch_async(dispatch_get_main_queue(), ^{
NSString *str = [NSString stringWithFormat:@" ：%d， ：%@", _tickets, gcdName];
[self appendTextView:str];
_tickets--;
});
//
if ([gcdName isEqualToString:@" GCD-1"]) {
[NSThread sleepForTimeInterval:0.1f];
} else {
[NSThread sleepForTimeInterval:0.2f];
}
} else {
break;
}
}
}
// GCD
- (IBAction)gcdSales:(id)sender
{
// ， ！
_tickets = 20;
// 1. ， ， 0
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
// 2.
dispatch_group_t group = dispatch_group_create();
// 3.
dispatch_group_async(group, queue, ^{
[self gcdSaleMethod:@" GCD-1"];
});
dispatch_group_async(group, queue, ^{
[self gcdSaleMethod:@" GCD-2"];
});
// 4.
dispatch_group_notify(group, dispatch_get_main_queue(), ^{
[self appendTextView:@" "];
});
}
@end
H:/0729/05_다 중 루틴 다운로드 UIImageViewController.h
//
// ViewController.h
// UIImage
//
// Created by liufan on 13-7-29.
// Copyright (c) 2013 itcast. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
//
@property (strong, nonatomic) IBOutletCollection(UIImageView) NSArray *imageViews;
// NSThread
- (IBAction)threadDownload:(id)sender;
// NSOperation
- (IBAction)operationDownload:(id)sender;
// GCD
- (IBAction)gcdDownload:(id)sender;
@end
H:/0729/05_다 중 루틴 다운로드 UIImageViewController.m
//
// ViewController.m
// UIImage
//
// Created by liufan on 13-7-29.
// Copyright (c) 2013 itcast. All rights reserved.
//
#import "ViewController.h"
@interface ViewController ()
{
//
NSInteger _imageIndex;
}
@end
@implementation ViewController
// URL， 17
- (NSURL *)imageURL
{
NSInteger index = (arc4random() % 17) + 1;
NSString *urlString = [NSString stringWithFormat:@"http://localhost/~liufan9/itcast/images/nat/NatGeo%02d.png", index];
return [NSURL URLWithString:urlString];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
//
- (void)updateImageViews:(UIImage *)image
{
if (_imageIndex > 3) {
_imageIndex = _imageIndex % 4;
}
UIImageView *imageView = _imageViews[_imageIndex];
[imageView setImage:image];
_imageIndex++;
}
#pragma mark - NSThread
- (void)threadDownloadMethod:(NSURL *)imageURL
{
// 1. URL
// 2.
NSData *data = [NSData dataWithContentsOfURL:imageURL];
UIImage *image = [UIImage imageWithData:data];
if (image != nil) {
// UI
[self performSelectorOnMainThread:@selector(updateImageViews:) withObject:image waitUntilDone:YES];
}
}
- (IBAction)threadDownload:(id)sender
{
// 1. ， URL
// 2.
// 3.
// 4.
//
for (NSInteger i = 0; i < 4; i++) {
[NSThread detachNewThreadSelector:@selector(threadDownloadMethod:) toTarget:self withObject:[self imageURL]];
}
}
#pragma mark - NSOperation
- (void)operationDownloadImage:(NSURL *)imageURL
{
// 1. URL
// 2.
NSData *data = [NSData dataWithContentsOfURL:imageURL];
UIImage *image = [UIImage imageWithData:data];
if (image != nil) {
// UI
[[NSOperationQueue mainQueue]addOperationWithBlock:^{
[self updateImageViews:image];
}];
}
}
- (IBAction)operationDownload:(id)sender
{
// 1. ， URL
// 2.
// 3.
NSOperationQueue *queue = [[NSOperationQueue alloc]init];
for (NSInteger i = 0; i < 4; i++) {
[queue addOperationWithBlock:^{
[self operationDownloadImage:[self imageURL]];
}];
}
}
#pragma mark - GCD
- (void)gcdDownloadImage:(NSURL *)imageURL
{
// 1. URL
// 2.
NSData *data = [NSData dataWithContentsOfURL:imageURL];
UIImage *image = [UIImage imageWithData:data];
if (image != nil) {
// UI
dispatch_async(dispatch_get_main_queue(), ^{
[self updateImageViews:image];
});
}
}
- (IBAction)gcdDownload:(id)sender
{
// 1. gcd
// 1.
// 2.
// 3.
// 4.
// ： ， dispatch_async
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
for (NSInteger i = 0; i < 4; i++) {
dispatch_async(queue, ^{
[self gcdDownloadImage:[self imageURL]];
});
}
}
@end
H:/0729/06_다 중 루틴원자 속성 잠 금 자원ViewController.h
//
// ViewController.h
// Tickets
//
// Created by liufan on 13-7-27.
// Copyright (c) 2013 itcast. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
//
@property (weak, nonatomic) IBOutlet UITextView *infoTextView;
// NSThread
- (IBAction)threadSales:(id)sender;
// NSBlockOperation
- (IBAction)operationSales:(id)sender;
// NSInvocationOperation
- (IBAction)invocationSales:(id)sender;
// GCD
- (IBAction)gcdSales:(id)sender;
@end
H:/0729/06_다 중 루틴원자 속성 잠 금 자원ViewController.m
// ViewController.m
// Tickets
// Created by liufan on 13-7-27.
// Copyright (c) 2013 itcast. All rights reserved.
#import "ViewController.h"
@interface ViewController ()
{
// ，
// int _tickets;
// ，NSThread
NSLock *_threadLock;
}
// iOS ， ， “ ”
// ， 。
@property (assign, atomic) int tickets;
@end
@implementation ViewController
//
- (void)appendTextView:(NSString *)text
{
NSMutableString *str = [NSMutableString stringWithString:[_infoTextView text]];
[str appendFormat:@"
%@", text];
NSRange range = NSMakeRange(str.length, 1);
[_infoTextView setText:str];
//
[_infoTextView scrollRangeToVisible:range];
}
#pragma mark - NSThread
// NSThread
- (void)threadSaleMethod
{
// ，
if (_threadLock == nil) {
_threadLock = [[NSLock alloc]init];
}
// 1. > 0
// 1.1.
// 1.2.
// 1.3.
// 2.
while (YES) {
//
[_threadLock lock];
/**
：
NSThread ， ， ， 。
*/
if (_tickets > 0) {
//
NSString *str = [NSString stringWithFormat:@" ：%d， ：%@",
_tickets, [[NSThread currentThread]name]];
// UI
[self performSelectorOnMainThread:@selector(appendTextView:)
withObject:str waitUntilDone:YES];
_tickets--;
//
[_threadLock unlock];
} else {
//
[_threadLock unlock];
NSString *str = [NSString stringWithFormat:@" ， ：%@",
[[NSThread currentThread]name]];
// UI
[self performSelectorOnMainThread:@selector(appendTextView:)
withObject:str waitUntilDone:YES];
break;
}
//
if ([[[NSThread currentThread]name] isEqualToString:@" -1"]) {
[NSThread sleepForTimeInterval:1.0f];
} else {
[NSThread sleepForTimeInterval:0.1f];
}
}
}
// NSThread
- (IBAction)threadSales:(id)sender
{
// ， ！
_tickets = 20;
// 1
NSThread *thread1 = [[NSThread alloc]initWithTarget:self
selector:@selector(threadSaleMethod) object:nil];
// ， ，
[thread1 setName:@" -1"];
// 1
[thread1 start];
// 2，
NSThread *thread2 = [[NSThread alloc]initWithTarget:self
selector:@selector(threadSaleMethod) object:nil];
[thread2 setName:@" -2"];
[thread2 start];
}
#pragma mark - NSOperation
// NSOperation
- (void)operationSaleMethod:(NSString *)operationName
{
while (YES) {
/**
：
1. NSOperation ， ， ！
2. 。
*/
@synchronized(self) {
if (self.tickets > 0) {
// ，
NSString *str = [NSString stringWithFormat:@" ：%d， ：%@",
self.tickets, operationName];
[[NSOperationQueue mainQueue]addOperationWithBlock:^{
[self appendTextView:str];
}];
self.tickets--;
} else {
//
[[NSOperationQueue mainQueue]addOperationWithBlock:^{
NSString *str = [NSString stringWithFormat:@" ， ：%@", operationName];
[self appendTextView:str];
}];
break;
}
}
// ， ，
if ([operationName isEqualToString:@" -1"]) {
[NSThread sleepForTimeInterval:0.1f];
} else {
[NSThread sleepForTimeInterval:0.5f];
}
}
}
// NSBlockOperation
- (IBAction)operationSales:(id)sender
{
/*
， ！
， ，
*/
_tickets = 20;
//
NSOperationQueue *queue = [[NSOperationQueue alloc]init];
[queue addOperationWithBlock:^{
[self operationSaleMethod:@" -1"];
}];
[queue addOperationWithBlock:^{
[self operationSaleMethod:@" -2"];
}];
[queue addOperationWithBlock:^{
[self operationSaleMethod:@" -3"];
}];
//
[queue setMaxConcurrentOperationCount:2];
}
// NSInvocationOperation
- (IBAction)invocationSales:(id)sender
{
// ， ！
_tickets = 20;
// 1
NSInvocationOperation *operation1 = [[NSInvocationOperation alloc]
initWithTarget:self selector:@selector(operationSaleMethod:) object:@" -1"];
// 2
NSInvocationOperation *operation2 = [[NSInvocationOperation alloc]
initWithTarget:self selector:@selector(operationSaleMethod:) object:@" -2"];
//
NSOperationQueue *queue = [[NSOperationQueue alloc]init];
[queue addOperation:operation1];
[queue addOperation:operation2];
}
#pragma mark - GCD
// GCD
- (void)gcdSaleMethod:(NSString *)gcdName
{
while (YES) {
/**
：
1. GCD ， ， ！
2. 。
*/
@synchronized(self) {
if (self.tickets > 0) {
// UI ， 。
NSString *str = [NSString stringWithFormat:@" ：%d， ：%@", self.tickets, gcdName];
dispatch_async(dispatch_get_main_queue(), ^{
[self appendTextView:str];
});
//
self.tickets--;
} else {
break;
}
}
//
if ([gcdName isEqualToString:@" GCD-1"]) {
[NSThread sleepForTimeInterval:0.1f];
} else {
[NSThread sleepForTimeInterval:0.2f];
}
}
}
// GCD
- (IBAction)gcdSales:(id)sender
{
/*
， ！
， ，
*/
_tickets = 20;
// 1. ， ， 0
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
// 2.
dispatch_group_t group = dispatch_group_create();
// 3.
dispatch_group_async(group, queue, ^{
[self gcdSaleMethod:@" GCD-1"];
});
dispatch_group_async(group, queue, ^{
[self gcdSaleMethod:@" GCD-2"];
});
// 4.
dispatch_group_notify(group, dispatch_get_main_queue(), ^{
[self appendTextView:@" "];
});
}
@end
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