concurrent programming book

other or modifying the container's threads to interfere with each other.Obviously, the underlying array is copied whenever the container is modified, which requires some overhead, especially if the container is large in size. The "Copy on write" container should be used only when the operation is far more than the modification operation. This guideline is a good description of many event notification systems:When you distribute notifications, you need to iterate through the registered listener

Java Concurrency Programming Practice DirectoryConcurrent Programming 01--concurrenthashmapConcurrent programming 02--blocking queues and producer-consumer patternsConcurrent programming 03--latching countdownlatch and fence CyclicbarrierConcurrent programming 04--callable a

Java concurrent programming: Synchronized and its implementation principle. Java concurrent programming series [unfinished ]: Java concurrent programming: core Theory Java concurrent

either self-increment or decrement is non-atomic.(1) If Mnumber is at this time equal to 100, thread 1 does the self-increment operation.(2) Thread 1 reads the value of Mnumber 100 first, then it is blocked.(3) At this time, thread 2 reads the value of Mnumber 100, and then the self-increment operation, and write to main memory, when the value in main memory is 101.(4) Thread 1 continues to execute at this time because thread 1 has read the value 100 and then made a self-increment of 101 and th

, where the simplest and most basic pipelining patterns are shown, and more complex patterns can be considered to include more processing of data at each stage. 4 How to use In the case of Concurrentbag and BlockingCollection alone, other concurrent collections are similar. Concurrentbag List blockingcollection-Producer Consumer Model public static void Execute () {//Invoke Invoke, which enables the producer and consumer tasks to be executed in pa

Thread-related issues: a) security issue B) activity issues C) Performance issues The key to writing thread-safe code is to manage state access operations, especially access to shared and mutable states The main synchronization mechanism in Java is the keyword synchronized, which provides an exclusive locking method, the term "synchronization" also includes variables of volatile type, display locks and atomic variables When writing concurrent ap

. Writing asynchronous operations is a high degree of complexity, the program mainly using callback methods to handle, and ordinary people's way of thinking, and difficult to debug.Scope of applicationAfter understanding the pros and cons of threading and asynchronous operations, we can explore the logical use of a thread and async. I think that when I am required to perform I/O operations, it is more appropriate to use asynchronous operations than to use thread + synchronous I/O operations. I/O

The following is transferred from http://ifeve.com/%E5%B9%B6%E5%8F%91%E7%BC%96%E7%A8%8B%E6%A8%A1%E5%9E%8B/:Concurrent systems can be implemented with multiple concurrent programming models. The concurrency model specifies how threads in the system can collaborate to complete the jobs assigned to them. Different concurrency models split jobs in different ways, whi

Java concurrent programming: volatile keyword ParsingThe volatile keyword may have been heard or used by many friends. Before Java 5, it was a controversial keyword, because using it in a program often leads to unexpected results. After Java 5, the volatile keyword can be revived. Although volatile keywords are relatively simple to understand literally, it is not easy to use them well. Because the volatile

Java concurrent programming-graphical interface applications and deadlocks I don't know why this book will introduce an interface application. The Java interface is very poor and inefficient, and the interface is a weakness of java, it may be because you have some knowledge about concurrent programming.Why is the GUI s

always holds the correct lock when visiting the data.A closed mechanism is easier to construct a thread-safe class, because when the state of the enclosing class is parsed, the entire program is not required to examine the thread security of the class.Even if the closure can guarantee that all processing within the object is readily available, it is also important to note that when the object is advertised, it is possible to fail, such as hashset-only one variable in the sample object ensures t

read a lot of instructions to reorder the article, unfortunately because of their own hardware and computer theory of lack of knowledge, it is difficult to understand the deep-seated mysteries and implementation principles. But there are a lot of posts, easy to understand, the use of examples are very image. Daniel is able to use simple explanations and popular metaphors to tell us what is very advanced. here to do a excerpt and summary, and share with you, I hope you can have an image of order

Java Concurrency Programming: Concurrenthashmap of Concurrent Containers (reprint)The following part of the content is reproduced from:http://www.haogongju.net/art/2350374New concurrent packages have been added to the JDK5, and concurrent containers have improved concurrency performance through mechanisms relative to t

then recv (), it is the same efficiency and blocking way. Because it is not blocked on connect ()/recv (), it also has to be blocked on select (). Therefore, the selector mechanism is designed to solve a large number of concurrent connections. When there are a large number of non-blocking calls in the system, the selector mechanism can exert maximum power when the event can be generated at any time.In some progra