Programmer Think

preface During this time, I read the basic content of C + + concurrent programming practice and wanted to use the recently learned knowledge to realize a simple thread pool by myself. thinking Personal understanding of thread pool is to use a fixed number of threads that have been created to perform the specified tasks, so as to avoid th ...

1. What is a thread interrupt2. API methods related to interrupts3. Implement thread interrupt through a volatile variable4. It is implemented through the interrupt api method of Thread class5. If the interrupt flag of the current thread is true, will it stop immediately?6. Static method thread Introduction to interrupted()7. Summary 1. What is ...

run() method (just an internal method) The run() method is just an ordinary method in a class. Calling the run method is the same as calling an ordinary method. The method run() is called the thread body. It contains the contents of the thread to be executed. The thread enters the [running state] and starts running the code in the run function ...

preface Today, we will introduce the relevant knowledge of process control in detail. Such as exit and_ The difference of exit function, the principle of fork function, virtual address space, process creation, process termination, process waiting, process program replacement and so on. Let's study together! 1, Process creation 1.1 in ...

Thread state of Java Thread method methodexplainsetPriority(int newPriority)Change the priority of a threadstatic void sleep(long millis)Hibernates the currently executing thread for the specified number of millisecondsvoid join()Wait for the thread to terminatestatic void yield()Pauses the currently executing thread object and executes ...

Recently, I encountered a process suspension problem when using Python's multiprocessing module. Let's record it here. First, the minimum code of a multi process application is given. import multiprocessing as mp def produce(q): """producer""" for i in [1, 2, 3, 4, 5, 6, 7, 8, 9]: q.put(i) print(f"Producer quit.") def c ...

The previous article described how to create a thread. This is relatively simple. There will be a problem. If more threads are created, the efficiency of the system will be greatly reduced, because it takes time to create and destroy threads frequently So how to reuse existing threads? That is to achieve this effect through thread pool! First ...

Three ways to create threads? Answer: 1. Inherit Thread class step1-4 step1: inherit Thread class public class A_extends_RunningMan extends Thread { private String name; public A_extends_RunningMan() { } public A_extends_RunningMan(String name) { this.name = name; } step2: rewrite run method public void run( ...

Pre knowledge CASReentrant lockLockSupport 1, Introduction AbstractQueuedSynchronizer is the basic framework used to build locks and other synchronization components. It uses an int member variable to represent the synchronization status and completes the queuing of resource acquisition threads through the built-in FIFO. Common APIs such ...

Wake up mechanism of notify() preface As everyone who has learned java knows, when learning concurrent multithreading, we have a notify() method. At that time, when the blogger was learning, he said that notify() randomly wakes up a waiting thread and obtains a lock. I believe many small partners are the same as bloggers, but is this re ...