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select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...有不同的等待队列，对于tcp_poll来说，其等待队列是sk->sk_sleep（注意把进程挂到等待队列中并不代表进程已经睡眠了）。在设备收到一条消息（网络设备）或填写完文件数据（磁盘设备）后，会唤醒设备等待队列上睡眠的进程，...
Catch an exception thrown by an async void method
...ifferent after you did initiate the async operations. It might call Thread.Sleep or even terminate. As long as there is one foreground thread left your application will happily continue to execute asynchronous tasks.
You can handle the exception inside the async method after your asynchronous op...
Push Notifications in Android Platform
...emClock.elapsedRealtime()); try {
Thread.sleep(5000);
} catch (InterruptedException e) {
}
}
Log.i(TAG, "Completed work @ " + SystemClock.elapsedRealtime());
sendNotification(extras.getString("mess...
Play a Sound with Python [duplicate]
...it()
pygame.mixer.music.load("test.wav")
pygame.mixer.music.play()
time.sleep(10)
This also plays .mp3 files.
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Can local storage ever be considered secure? [closed]
...
@ircmaxell If you sleep with dogs you can't expect not to wake up with fleas. If the user installs a malware add on that's just the same as the user installing a virus on their PC, it's no different from it. Your Java or C program can be as se...
Shell script to send email [duplicate]
...would of course be to pipe the output into mail:
vs@lambda:~$ cat test.sh
sleep 3 && echo test | mail -s test your@address
vs@lambda:~$ nohup sh test.sh
nohup: ignoring input and appending output to `nohup.out'
I guess sh test.sh & will do just as fine normally.
...
Java: notify() vs. notifyAll() all over again
...one of threads is notified to wake up, execute the next job and go back to sleep.
Use notifyAll() for other cases where the waiting threads may have different purposes and should be able to run concurrently. An example is a maintenance operation on a shared resource, where multiple threads are waiti...
What is a mutex?
...n-reentrant resources here.
// Simulate some work.
Thread.Sleep(500);
Console.WriteLine("{0} is leaving the protected area",
Thread.CurrentThread.Name);
// Release the Mutex.
mut.ReleaseMutex();
Console.WriteLine("{0} has released the m...
Spring Boot application as a Service
... pkill -f $APP_NAME.jar > /dev/null 2>&1
fi
sleep 1s
done
}
case $1 in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
esac
exit 0
When stopping, it will attempt to use Spring Boot Actuator to perform a controlled shutdown. However, in case ...
“User interaction is not allowed” trying to sign an OSX app using codesign
...s this will set the auto-lock timeout to unlimited and remove auto-lock on sleep.
Import your signing certs from a .p12
security import "${DIST_CER}" -P "${CERTIFICATE_PASSWORD}" -k "${KEYCHAIN_NAME}" -T /usr/bin/codesign
Import the certs and gives codesign access through the -T option.
Set the...