producer names

The use of producer and consumer patterns in concurrent programming can solve most concurrent problems. This model improves the overall processing speed of the program by balancing the working capability of the production process and the consuming thread. Why to use producer and consumer models In the online world, the producer is the thread that produces the d

One, the producer consumer model student class member variable production and consumption demo, first edition1. Wait for wake-up:There are three methods available in the object class:Wait (): WaitNotify (): Wake up a single threadNotifyall (): Wake All Threads2. Why are these methods not defined in the thread class?Calls to these methods must be called through the lock object, and the lock object we just used is an arbitrary lock object.Therefore, the

Semaphore (semaphore)The mutex variable is 0 or 1, which can be considered as the available quantity of a resource, and the mutex is 1 when initialized, indicating that there is an available resource, the resource is locking, the mutex is reduced to 0, the resource is no longer available, the resource is freed when unlocked, and the mutex is added to 1, indicating that there is another available resource.Semaphores (Semaphore) are similar to mutexes, which indicate the number of available resour

1#include 2#include 3 ConstUnsigned ShortSize_of_buffer =Ten;//buffer length4Unsigned ShortProductID =0;//Product number5Unsigned ShortConsumeid =0;//The product number that will be consumed6Unsigned Short inch=0;//buffer subscript When the product enters the buffer7Unsigned Short out=0;//buffer subscript When product is out of buffer8 intG_buffer[size_of_buffer];//buffer is a cyclic queue9 BOOLG_continue =true;//Control Program EndTenHANDLE G_hmutex;//used for mutual exclusion between threads

Objective:Because of the time relationship before, the "producer consumer problem" is not introduced in the blog essay, so this article as a supplement to the previous "multithreading" article.Concept :Producer Consumer issues (Bounded-buffer problem), is a classic case of multithreading synchronization issues. In this case, the main implementation is two roles to coordinate access to the same resource. The

I. OverviewSimulating producer consumer issuesSecond, the Code1.consumer.java2.producer.java3.syncstack.java4.test.java1.consumer.javaPackage Producerconsumer;public class Consumer implements Runnable {private Syncstack syncstack;public Consumer ( Syncstack syncstack) {super (); this.syncstack = Syncstack;} Public void Consume () {Product p, for (int i = 0; i 　　2.producer.javaPackage Producerconsumer;public class

The producer and consumer model is very old. I recently wrote an OpenMP version to share this model. The general approach of the model is as follows: 1. The producer needs to take the task and produce the product. 2. The consumer needs to take the product and consume the product. After the producer produces a product, it must inform the consumer that the product

20120825 Zheng Q: Why do MQ need to control the producer traffic? A: The trouble is: "The implementation and design of virtual machines like Erlang have not prevented users from throwing messages to the Message Queue of a process. When the message production speed is too fast, when the processing capacity of the process is exceeded, these messages are accumulated, occupying more memory and eventually causing VM crash. 』 Q: Why do I need to know that M

); // block and unlock If you try to lock a mutex lock that has been locked by a thread, pthread_mutex_lock will block the lock until it is unlocked. Pthread_mutex_trylock is a non-blocking function. If the mutex is locked. It returns an ebusy error. Solving producer and consumer problems Multiple producers and one consumer, such The integer array buff contains the items to be produced and consumed (that is, shared data), and the buff data increases

Introduction The producer and consumer problems are classic issues in the thread model:Same time periodIntranet sharingSame bucketAs shown in, if the producer stores data into the space and the consumer uses the data, the following situations may occur if the data is not coordinated: Producer consumer Diagram The storage space is full, and the

error, this message will be lost directly, so be careful here -Rabbit:direct-exchangeID= "Spittle.fanout"name= "Spittle.fanout"Durable= "true"Auto-delete= "false"> rabbit:bindings> rabbit:bindingQueue= "Spittle.alert.queue.1"Key= "{alert.queue.1}">rabbit:binding> rabbit:bindingQueue= "Spittle.alert.queue.2"Key= "{alert.queue.2}">rabbit:binding> rabbit:bindingQueue= "Spittle.alert.queue.3"Key= "{alert.queue.3}">rabbit:binding> rabbit:bindings>Rabbit:fanout-exchange>

IntroductionProducer Consumer is a classic modelThe coupling between the producer and the consumer is reduced by the producer, consumer and bufferChanges to the producer and consumerThe following is a model of a typical life-style consumer.Design ideasIn the team as a buffer zone, the FIFO of the productThe producer us

suspend the wait, you can call Sem_trywait (). The Sem_post () can free up resources (v operations), increase the value of semaphore by 1, and wake up the pending thread.II. realization of producer-consumer issues(1). This example mainly uses the annular buf and the signal quantity to realize the single consumer, the single producer , its ring BUF realization mainly uses the array subscript ring BUF the si

Simulating consumer and subscriber patterns through threading:First of all, define a clerk: The clerk includes the purchase and sale method; Second, define a producer and producer to produce products for the clerk; Moreover, define a consumer who is responsible for consuming products from shop assistants.Clerk:/*** Shop assistant*/classClerk {Private intProduct = 0; /*** Arrival*/ Public synchronized vo

In the previous producer consumer program, the data produced by the producer at a time can be read multiple times by the consumer. Obviously, this does not meet our requirements. In this regard, the above procedures are improved: 1) The producer produces data once and the consumer obtains the data once; 2) A bucket can only store one pair of data We will use the