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Producer principle Producer overview         The party sending the message is called the producer. His role in the entire RocketMQ production and consumption system is shown in the figure:         Producer group: a logical concept. When using producer instances, you need to specify a group name. A ...

Original website: Java multithreading -- ReentrantLock -- use / example / principle_ CSDN blog brief introduction explain          This article introduces ReentrantLock (reentrant exclusive lock) in Java's JUC. Including: usage and principle. summary         ReentrantLock is mainly implemented ...

Thread safe object creation, callback and Deconstruction in C + +It is not difficult to write thread safe classes. You can use synchronization primitives to protect the internal stateMost STL classes are not thread safe and need to be locked externally to ensure simultaneous access by multiple threadsSecure object creationThe only requirement i ...

< ------------------------------------------------------ Liao Xuefeng learns Java ---------------------------------------- > 1. Multithreading Basics The computer calls a task a process, the browser is a process, and the video player is another process. Similarly, both the music player and Word are processesSubtasks in a process are ...

1, Java Memory Model JMM is the Java Memory Model, which defines the abstract concepts of main memory and working memory. The bottom layer corresponds to CPU register, cache, hardware memory, CPU instruction optimization, etc. JMM is reflected in the following aspects: 1. Atomicity - ensure that the instruction will not be affected by thread co ...

1. Visibility between threads Multithreading improves efficiency and caches data locally, making data modification invisible, To ensure visibility, either trigger synchronization instructions or add volatile modified memory. As long as there are modifications, synchronize each thread involved immediately /** * volatile Keyword to make a var ...

1. std::async and std::future create background tasks and return values 1.1 std::async std::async is a function template used to start an asynchronous task. After starting an asynchronous task, it returns an std::future object. std::future is a class template.Start an asynchronous task: create a thread and start executing the correspondin ...

catalogue   1, Concept 1. Program, process, thread 2, Creation and use of threads 1. By inheriting the Thread class 2. By implementing the Runnable interface: 3. Related methods in Thread class 4. Thread priority 3, Thread life cycle   1. Several states of threads 4, Thread synchronization   1. Synchronous code block ...

1, Timer timer basic usage Timer timer = new Timer(); timer.schedule(TimerTask, Date);， The task needs to be encapsulated with TimerTask, and the run method in TimerTask is rewrittenTimer timer = new Timer(boolean);， Passing a value of true indicates that the timer thread is a daemon thread, and the end of the main thread follows the end. Th ...

Linux thread scheduling strategy and priority experiment What is thread scheduling policy? The Linux kernel has three scheduling algorithms: 1,SCHED_OTHER time-sharing scheduling strategy, 2,SCHED_FIFO real-time scheduling strategy, first come first serve 3,SCHED_RR, real-time scheduling strategy, time slice rotation Where, SCHED_FIFO and S ...