puppet notify

In Java, you can use the Wait () method and the Notify () method or the Notifyall () method to invoke the object objects to enable communication between threads. Calling the Wait () method in the thread will block notifications waiting for other threads (other threads call the Notify () method or the Notifyall () method), call the Notify () method or the Notifyal

Tag: Hose ack Time decides to synchronize trace information about comparisonOriginal link Java concurrent programming: two ways to collaborate between threads: Wait, notify, notifyall, and conditionIn the front we will have a lot of questions about synchronization, but in reality, there is a need for collaboration between threads. For example, the most classic producer-consumer model: When the queue is full, the producer needs to wait for the queue to

Having read a book about concurrency, there is a conclusion that using Notifyall is a safer procedure. Take the message queue as an example, assuming that the action put into the element is put, taking the action of the element as the last sentence of Take,put may be if (count = = 1) {Notempty_cond.notify_all ();} If you change the Notify_all to notify (), there are cases where concurrency is not sufficient: assuming that the queue is empty for severa

In the case of multithreading, because multiple threads of the same process share the same piece of storage space, there is also a serious problem of access to the conflict at the same time that it brings convenience. The Java language provides specialized mechanisms to resolve such conflicts, effectively avoiding the same data object being interviewed by multiple threads at the same time. NBSP; wait and notify are important components of the Jav

one, Wait (), notify (), Notifyall () 1, signal volume One of the easiest ways to communicate between threads is to set the semaphore in a variable of a shared object. Thread A sets the Boolean member variable hasdatatoprocess to true in a synchronized block, and thread B reads hasdatatoprocess This member variable in the synchronization block. The following example uses a signal-holding object and provides set and check methods: public class mysign

In the front we will have a lot of questions about synchronization, but in reality, there is a need for collaboration between threads. For example, the most classic producer-consumer model: When the queue is full, the producer needs to wait for the queue to have space to continue to put the goods inside, and during the waiting period, the producer must release the seizure rights to the critical resource (that is, the queue). Because producers do not release the use of critical resources, consume

reproduced: http://blog.csdn.net/ns_code/article/details/17225469 in Java, you can use the Wait () method and the Notify () method or the Notifyall () method to invoke the object objects to enable communication between threads. Calling the Wait () method in the thread will block notifications waiting for other threads (other threads call the Notify () method or the Notifyall () method), call the

First, thread communication (producer consumer issues):1, Thread communication: a thread to complete its own task, to notify another thread to complete another task. 2, the Classic question : producer and consumer issues.1 There is a thread safety problem: There may be a price disorder, so to lock, and here the product P object is unique, can be used as a lock. Package sram.thread; Product class product{String name; Name double price; Price}//Pro

Problems encountered during rsync installation using rpm in Aix and Solutions Recently, I was tossing over the AIX system. It had a package management tool named installp, but it was useless and I didn't know where to find the package. Thanks to the RPM support provided by Aix, the most familiar RPM package is used for software installation. Puppet And mcollective are installed. Then I started to manage it, but there was a problem when installing rsyn

Stage execution sequence stage {'zero ':}-> stage {'first' :}-> stage {'openstack-custom-repo ':} -> stage {'netconfig' :}-> stage {'corosync _ setup' :}-> stage {'openstack-Firewall ':} -> stage ['main'] 1. Class {'in in _ deployment ': Stage => 'zero'} First, execute begin_deployment2, class {": openstack :: logging ": running: openstack: logging. PP (involving rsyslog: Server. PP: openstack: logrotate. PP-> anacron module) 3. 'openstack-M m-repo' exist in these three files. 4. Class {"l23netw

This tutorial mainly uses Photoshop to synthesize the super cool robot background, this time mainly does the back effect, the reorganization feeling is somewhat similar to the puppet effect, adds the luster adornment, more manifests the robot characteristic. Author: Fun_phang Source: Station Cool first See effect chart Open artwork First load photos in Photoshop Pull the body out and load it into the background image of the black and dark gr

Console management ToolsPuppet foreman and PuppetdashboardPuppet Foreman PuppetdashboardForeman is an integrated data center cycle management tool that provides for puppet users to add a graphicalService provisioning, configuration management, and reporting capabilities. puppetmaster and agent information cannot be displayed in the ruby1.9 work under XMainly include:Boot tool, PXE Boot service DHCP Enterprise-level network weighing auditing and resou

December 24, people as usual open the IM software, between each other passed the family and friendship greetings. While people are enjoying the holidays, a worm is trying to lure aim, MSN Messenger, QQ, and Yahoo users to click on a link in the greeting, and inadvertently upload a malicious software to your computer. A Santa Claus Blessing document Link, will let your love machine henceforth become other people's puppet, this is Rootkit's secret and s

=NewThread (T2); Tt.start ();}}Implementation results: Third, Java multi-thread yield (), wait (), Notify (), Notifyall ()Yield (),1) through the yield () function, the thread can be entered into an executable state, and the scheduler will be re-scheduled from the thread in the executable state. So the function that called yield () is also likely to be executed immediately.2) when the yield () function is called, the thread does not release its

First, two concepts: Lock pool and wait pool Lock pool: Assume that thread a already has a lock on an object (note: Not a Class), while other threads want to invoke some synchronized method (or synchronized block) of the object. Because these threads must obtain the ownership of the lock on the object before entering the object's synchronized method, the lock for that object is currently owned by thread A, so these threads enter the lock pool of the object. Wait pool: Assuming that

, so the thread that executes the yield () may be executed immediately after it enters the executable state. Sleep () allows lower-priority threads to be executed, and, of course, can give the same priority and High-priority threads an opportunity to execute; yield () can only give the same priority thread the chance to execute. When you call Wait (), the thread frees up its "lock flag" so that other synchronized data in the object where the thread is located can be used by another thread. Waite

Class Threada extends thread{ Common data area for thread synchronization Object Oa=null; Threada (Object o) { This.oa=o; } Thread A execution logic public void Run () { Thread synchronization area, requiring a lock for public data Synchronized (OA) { System.out.println ("Threada is running ..."); for (int i=0;i System.out.println ("Threada value is" +i); if (i==50) { try { Current thread Wait Thread.CurrentThread (). Wait (); catch (Interruptedexception e) { E.printstacktrace

PollingThreads themselves are independent individuals in the operating system, but threads are not independent of each other, because they communicate and collaborate with each other.Imagine a scene, a thread to do int type variable i cumulative operation, b thread wait I to 10000 to print out I, how to deal with? One way is that the B thread while (i = = 10000), so that there is communication between two threads, B thread constantly through the rotation to detect i = = 10000 this condition.This

Inter-thread collaboration: Wait, notify, NotifyallIn Java, you can use the Wait () method and the Notify () method or the Notifyall () method to invoke the object objects to enable communication between threads. Calling the Wait () method in the thread will block notifications waiting for other threads (other threads call the Notify () method or the Notifyall ()

This article for the translation of foreign tutorials, teach you to use Photoshop to create surreal cosmic science fiction puppet beauty effect, the production process is not difficult, mainly in your imagination and creativity, like the students can learn! Let's take a look at the final results of the Photoshop Tutorial: 1. Create a new file, size set to 4200px x 5100px pixels, resolution 300, fill black. Search the web for the nebula footag