java concurrency in practice book

Download address: Network disk download Introduction to the content One of the most influential and valuable works in the Java field, with more than 20 years of experience in teaching and research of senior Java technology experts to write (won the Jolt Award), and "Java Programming ideas," the same as the more than 10-year global best-selling not decline, popul

Shutdownnow method tries to stop all active tasks that are being performed, pauses processing of the awaited task, and returns a list of tasks waiting to be executed. Thread pool Optimization-intsmaze In general, determining the size of the thread pool requires considerations such as the number of CPUs, memory size, JDBC connectivity, and so on. In the Java Concurrency Programming

Java Concurrency: Lock framework Detailed Summary: We already know that synchronized is the Java keyword, is the built-in features of Java, in the JVM level to achieve the synchronization of the critical resources of mutually exclusive access, but the synchronized granularity is somewhat large, in dealing with the act

In this summary, we focus on the principle and design idea of atomic operation.Because of the locking mechanism in the next section, the concept of locking is introduced appropriately in this section.In the Java Concurrency in practice, this defines thread-safe: When multiple threads access a class, the behavior of the class is still correct , without re

Last week we sent out 6 free books about Python 's heavyweight technology, which was particularly strong after the launch, with one and the last one just like, but we added a copy to this friend for encouragement, From the other side, you can see the Java Program Ape's love program for Python.This time we continue to force, send books closer to Java technology Professional, more in line with the majority of

Recently, the Java concurrent programming combat-java consurrency in practice has been reviewed, and some of the common tools mentioned in the book are recorded here:I. Latching (door bolt)-CountdownlatchScenario: multithreaded testing, usually in order to accurately timing, requires all the threads ready to start exec

aborts the program, all threads abort its execution. When the run () method of the Thread object is invoked, the thread is not created, nor is the thread created when the class run () method that implements the Runnable interface is invoked. The thread is created only if the start () method of the thread object is invoked. Endless As mentioned at the beginning of this section, there is another way to create a thread: Inherit the thread class, override the Run () method, so that you can creat

On the network for thread resolution always smallpox dragon and Phoenix, to you instill a lot of concepts, postgraduate examination, undergraduate operating system, especially, so you even carefully read a lot of articles do not know what to do.The following do not take the site copy and paste, in the explanation of their Java thread concurrency, mutual exclusion and synchronization before the first to solv

precedes operation B, and Operation B precedes Operation C, it can be concluded that operation a precedes operation C Thread Start rule: the Start () method of the thread object takes precedence over each action of this thread Thread Break rule: The call to the thread interrupt () method occurs when the code of the interrupted thread detects that the interrupt event occurred Thread termination rule: All operations in a thread occur first in thread termination detection, and we can d

cause thread context switching and scheduling.use optimization for volatileThe famous Java concurrency programmer, Doug Lea, adds a queue collection class LinkedTransferQueue in the concurrency package of JDK7, where he uses a volatile variable to optimize the team's performance by appending a byte.Additional word energy-saving optimized performance? This approa

get the service as you wish. You will not misuse the available resources, because the number of thread objects used by Fixedthreadpool is bounded. Note that in any thread pool, existing threads are automatically reused whenever possible. Although this book will be used CachedThreadPool , it should also be considered in the code that generates the thread FiexedThreadPool . CachedThreadPoolIt is a reasonable preference to create a thread with

This article is mainly in the form of knowledge points to Java multithreading, Learning Java Multi-Threading Foundation, this article refers to the book "Java Concurrency Programming Practical manual", if you are interested in studying and advanced multithreading ideas, you

at the specified memory location of a variable. For example, in order to optimize a cyclic index variable, the compiler may choose to store it in a register, or the cache will be deferred to a more appropriate time before a new variable value is stored in main memory. All of these optimizations are designed to help achieve higher performance. The term "reordering" is used to describe several types of memory operations: When the compiler does not change the semantics of the program, as

First, the preface Borrowing Java concurrent programming practice "It's not easy to write the right program, it's even harder to write a normal concurrency program," The multithreaded thread-safety problem is subtle and unexpected compared to sequential execution, because the order of the operations in multiple threads is unpredictable without proper synchroniza

Learning materials from http://ifeve.com/java-concurrency-thread-directory/One, multi-threaded the difference between a process and a thread: A program runs at least one process, and a process contains at least one thread. Multithreading: Multithreading enables multiple threads to execute in parallel within a program, and a thread's execution can be thought of as a CPU executing the program, wh

Introduction: Active object is a typical design pattern in concurrent programming practice, and the core of active object mode is to improve the concurrency of programs by solving the invocation and execution of the coupling method. This paper begins with the typical active object design pattern and explores the application of the active object concurrency patter

, used to connect all the Map.entry, so you can traverse or do the LRU cache and so on. There is no longer a discussion here.memcached internal data structure is the use of hashmap similar ideas to achieve, interested can be reference 8,9,10.In order not to make this article too long, so put the principle of concurrenthashmap in the next chapter. It is necessary to note that, although the name of Concurrenthashmap and HashMap some source, and the implementation of the principle is somewhat simil

obtained when a synchronization method on another object is accessed in a synchronous method.4, for synchronization, to be awake at all times on which object synchronization, this is the key.5, write thread-safe classes, you need to pay attention to multiple threads competing access to the logic and security of the resources to make the right judgment, the "atomic" operation to make an analysis, and ensure that other threads during atomic operation can not access the competing resources.6. When

constraint failure, or other conditions that make a program unable to continue execution, since this is already an almost universally accepted practice, so it is best not to implement any new error subclasses, so All outstanding throw structures should be subclasses of the runtimeexception (direct or indirect) 59th: Avoid unnecessary use of the inspected exception Excessive use of the tested exception will make the API very inconvenient to use, if th

AQS 14.6.1 reentrantlock 14.6.2 Sem Aphore and Countdownlatch 14.6.3 futuretask 14.6.4 reentrantreadwritelockthe 15th chapter atom variable and non-blocking synchronization mechanism15.1 Disadvantages of the lock 15.2 hardware support for concurrency 15.2.1 compare and exchange 15.2.2 non-blocking counters 15.2.3 JVM support for CAS 15.3 atomic variable class 15.3.1 atomic variable is a "better volatile" 1 5.3.2 Performance Comparison: Lock and Atom