这是Objective-C中NSThread的可接受的习惯用法吗？

I have a small agent-based modeling-framework that I'm writing as part of a project. The different agents all run in their own threads and a supervisor class controls their lifecycles. So the supervisor class can cancel these threads. I know that there is an isCancelled method on NSThread. Using that, is the following idiom acceptable:

我有一个基于代理的小型建模框架,我正在写作项目的一部分。不同的代理都在自己的线程中运行,而主管类控制着它们的生命周期。因此,主管类可以取消这些线程。我知道NSThread上有一个isCancelled方法。使用它,可以接受以下习语:

#import <Foundation/Foundation.h>
#import "BugThread.h"
#import "Bug.h"

@implementation BugThread

- (id) initWithBug: (Bug*) aBug {

    if((self = [super init])) {
        [bug autorelease];
        bug = [aBug retain];
    }

    return self;
}

- (void) main {

    GSRegisterCurrentThread();

    while(![self isCancelled]) {
        //bug does its stuff
    }
}

1 个解决方案

#1

I would say so, since this is explicitly stated in the docs:

我会这样说,因为这在文档中明确说明:

If your thread supports cancellation, it should call this method periodically and exit if it ever returns YES.

如果您的线程支持取消,它应该定期调用此方法,如果它返回YES则退出。

I'd recommend that you take a look at NSOperation and NSOperationQueue, though. They're intended to allow exactly this kind of concurrency while managing the actual threads on your behalf. See "Operation Queues" in the Concurrency Programming Guide.

不过,我建议你看看NSOperation和NSOperationQueue。它们旨在允许您在代表您管理实际线程时实现这种并发性。请参阅“并发编程指南”中的“操作队列”。

#1