ios NSThread sleepfortimeinterval 阻塞主线程
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NSThread sleepfortimeinterval blocks main thread
提问by user1028028
I want to simulate a communication with a server. As the remote server will have some delays I want to use a background thread that has on it
我想模拟与服务器的通信。由于远程服务器会有一些延迟，我想使用一个后台线程
[NSThread sleepForTimeInterval:timeoutTillAnswer];
The thread is created with NSThread sub classing and started ... However I noticed that sleepForTimeInterval is blocking the main thread... Why??? Isn't a NSThread a backgroundThread by default?
该线程是用 NSThread 子类创建并启动的......但是我注意到 sleepForTimeInterval 正在阻塞主线程......为什么？？？默认情况下 NSThread 不是 backgroundThread 吗？
This is how the thread is created:
这是线程的创建方式：
self.botThread = [[PSBotThread alloc] init];
[self.botThread start];
Further info: This is the bot thread subclas
更多信息：这是机器人线程子类
- (void)main
{
@autoreleasepool {
self.gManager = [[PSGameManager alloc] init];
self.comManager = [[PSComManager alloc] init];
self.bot = [[PSBotPlayer alloc] initWithName:@"Botus" andXP:[NSNumber numberWithInteger:1500]];
self.gManager.localPlayer = self.bot;
self.gManager.comDelegate = self.comManager;
self.gManager.tillTheEndGame = NO;
self.gManager.localDelegate = self.bot;
self.comManager.gameManDelegate = self.gManager;
self.comManager.isBackgroundThread = YES;
self.comManager.logginEnabled = NO;
self.gManager.logginEnabled = NO;
self.bot.gameDelegate = self.gManager;
BOOL isAlive = YES;
// set up a run loop
NSRunLoop *runloop = [NSRunLoop currentRunLoop];
[runloop addPort:[NSMachPort port] forMode:NSDefaultRunLoopMode];
[self.gManager beginGameSP];
while (isAlive) { // 'isAlive' is a variable that is used to control the thread existence...
[runloop runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
}
}
}
- (void)messageForBot:(NSData *)msg
{
[self.comManager didReceiveMessage:msg];
}
I want to call "messageForBot" from the main thread... also the background thread should call a method on the main thread to communicate.. The sleep for time intervail in inside the gManager object ....
我想从主线程调用“messageForBot”……后台线程也应该调用主线程上的一个方法来进行通信……gManager 对象内部的睡眠时间间隔……
回答by John
It blocks whatever thread sleepForTimeInterval is running on. Run it on another thread to simulate your server delay like this:
它会阻止 sleepForTimeInterval 正在运行的任何线程。在另一个线程上运行它来模拟您的服务器延迟，如下所示：
dispatch_queue_t serverDelaySimulationThread = dispatch_queue_create("com.xxx.serverDelay", nil);
dispatch_async(serverDelaySimulationThread, ^{
[NSThread sleepForTimeInterval:10.0];
dispatch_async(dispatch_get_main_queue(), ^{
//Your server communication code here
});
});
回答by sbarow
Try create a method in your thread class called sleepThread
尝试在您的线程类中创建一个名为 sleepThread 的方法
-(void)sleepThread
{
[NSThread sleepForTimeInterval:timeoutTillAnswer];
}
Then to make it sleep from your main thread
然后让它从你的主线程休眠
[self.botThread performSelector:@selector(sleepThread) onThread:self.botThread withObject:nil waitUntilDone:NO];
To send updated to your main thread from your bot thread.
从您的机器人线程发送更新到您的主线程。
dispatch_async(dispatch_get_main_queue(), ^{
[MainClass somethinghasUpdated];
});
Side Note
边注
To create the RunLoop I think all you need to do is
要创建 RunLoop 我认为你需要做的就是
// Run the Current RunLoop
[[NSRunLoop currentRunLoop] run];
回答by Brian
Swift:
迅速：
let nonBlockingQueue: dispatch_queue_t = dispatch_queue_create("nonBlockingQueue", DISPATCH_QUEUE_CONCURRENT)
dispatch_async(nonBlockingQueue) {
NSThread.sleepForTimeInterval(1.0)
dispatch_async(dispatch_get_main_queue(), {
// do your stuff here
})
}
