Found a total of 5 related content
Getting Started with PHP: Semaphores and Shared Memory
Article Introduction:As a scripting language, PHP is widely used in network applications. Generally speaking, PHP is not a language related to the underlying operation of the system, but in some special scenarios, such as concurrent programming, multi-process programming, inter-process communication, etc., it is still necessary to have a certain understanding of the underlying system. This article will introduce two low-level knowledge related to inter-process communication: semaphores and shared memory, and provide related usage examples of semaphores and shared memory in PHP. 1. Semaphore In multi-process programming, in order to ensure mutual exclusivity between multiple processes, it is necessary to
2023-05-20
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PHP multi-threaded programming practice: using shared memory for multi-process communication
Article Introduction:PHP is a scripting language widely used in web development. Generally, it is executed in a single thread. However, in some specific scenarios, we may need to use multi-threaded programming to improve program performance and efficiency. This article will introduce how to perform multi-threaded programming in PHP and use shared memory to achieve communication between multiple processes. First, we need to understand what multi-threaded programming and shared memory are. Multithreaded programming is a method of concurrent programming that allows a program to execute multiple threads at the same time, thereby improving program execution
2023-06-29
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An efficient method for Linux inter-process communication: using shared memory
Article Introduction:Another way of inter-process communication, using shared memory, will be explained below. 1. What is shared memory? As the name suggests, shared memory allows two unrelated processes to access the same logical memory. Shared memory is a very efficient way to share and transfer data between two running processes. Memory shared between different processes is usually arranged as the same segment of physical memory. Processes can connect the same segment of shared memory into their own address space, and all processes can access addresses in shared memory as if they were memory allocated using the C language function malloc. And if a process writes data to shared memory, the changes will immediately affect any other process that can access the same segment of shared memory. Special reminder: shared memory
2024-02-11
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Briefly understand the semaphore of PHP process communication
Article Introduction:This article brings you relevant knowledge about PHP. Semaphores are also called semaphores and semaphores. They are used to solve process (thread synchronization problems). They are similar to a lock. Obtain the lock before accessing (wait if you cannot obtain it) , release the lock after access. The article introduces it in detail through sample code. I hope it will be helpful to everyone.
2022-09-02
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Detailed explanation of inter-process communication and resource sharing of swoole development functions
Article Introduction:Detailed explanation of inter-process communication and resource sharing of swoole development functions In concurrent programming, inter-process communication (IPC) and resource sharing are two important concepts. In order to achieve high concurrency and high performance applications, programmers need to effectively manage inter-process communication and resource sharing. In PHP development, the swoole extension provides powerful functions that can help us achieve inter-process communication and resource sharing needs. 1. Inter-process communication In concurrent programming, inter-process communication is an indispensable part, which allows data to be exchanged between different processes.
2023-08-06
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