Multithreading 04: mutexes and deadlocks

📕 Mutex and deadlock 1, Data sharing issues First, let's look at the execution order of multithreading: void TextThread() { cout << "I am a thread:" << this_thread::get_id() << endl; //In thread operation code cout << "thread " << this_thread::get_id() << "End of operation" << endl; } int main() { ...

Posted by rd321 on Thu, 12 May 2022 09:14:46 +0300

Thread series: two common methods of java multithreading

How to implement java multithreading? There are two common methods: 1) Integrate the Thread class and override the run() method 2) Implement the Runnable interface and the run() method of the interface 1, Integrate the Thread class and override the run() method Start a new Thread by calling the start() method of Thread class and execute the ...

Posted by phpDVWeaver on Thu, 12 May 2022 08:56:14 +0300

Solutions to Java multithreading security problems

Causes of occurrence When multiple statements are operating on the same thread to share data, one thread only executes part of multiple statements, and another thread participates in the execution. The error that caused the shared data. Examples class Window implements Runnable{ private int ticket = 10; @Override public void run ...

Posted by Nytemare on Thu, 12 May 2022 08:23:32 +0300

Use multithreading and RandomAccessfile to copy files in multithreading

Class RandomAccessFile Instances of this class support reading and writing random access files. Random access to a file behaves like a large number of bytes stored in a file system. There is a cursor, or index to an implicit array, called a file pointer; The input operation reads the bytes starting from the file pointer and causes the file poi ...

Posted by kreoton on Wed, 11 May 2022 11:51:50 +0300

Four ways to create threads in java

Let's first look at processes and threads Process is the smallest unit of computer scheduling resources Thread is the smallest unit of process scheduling resources. A process has at least one thread Four ways to create threads in java 1. Inherit the Thread class and override the run() method. The run method is the task to be executed Ad ...

Posted by RwpTechAdMin on Wed, 11 May 2022 05:17:27 +0300

An example to let you see the randomness of thread scheduling

Several basic knowledge points of thread scheduling When multi-threaded concurrent execution, many students do not know what problems will be caused by the randomness of scheduling. It is necessary to know that if access to critical resources is not locked, it will lead to some emergencies or even deadlocks. Regarding thread scheduling, you nee ...

Posted by Adrianphp on Tue, 10 May 2022 04:36:15 +0300

Python processes and threads

In order to run multiple tasks at the same time, python introduces the concept of multithreading. In Python, you can start multithreading mode in a convenient and quick way. Multithreading is often used in programs that conform to the concurrency mechanism, such as network programs. In order to further subdivide work ta ...

Posted by chrisprse on Sat, 07 May 2022 21:03:36 +0300

java multithreading Foundation

1, Thread and process, thread implementation What is a thread? To talk about threads, we need to know what a process is (a process contains threads. A process can have multiple threads. When the process ends, the thread must end, the thread ends, and the process does not necessarily end) Process: it is a program currently being executed. Fo ...

Posted by spikypunker on Sat, 07 May 2022 01:55:53 +0300

CompletableFuture of Show me the code series

foreword There are two common ways to create threads. Inheriting Thread or implementing the Runnable interface, but both methods have a flaw, that is, there is no return value, which means that we cannot know the execution result of the thread. Although it has been satisfied in simple scenarios, what should we do when we need to return a value ...

Posted by happs on Fri, 06 May 2022 21:24:40 +0300

Multi process and multi thread programming in Linux

Creation and application of thread in Linux Multithreading programming technology in Linux is widely used. Multithreading can improve the running efficiency and convenience of programs. Multithreading programming technology is widely used in larger Linux programs. The communication problem between threads is how thread A passes messages to thr ...

Posted by svenski on Wed, 04 May 2022 11:07:14 +0300