In C++, Inter-Process Communication (IPC) is a mechanism that allows multiple independent processes to exchange data and coordinate operations. Below are detailed descriptions of three common IPC methods: 1. Pipes Pipes are a half-duplex communication method where data can only flow in one direction, and they are divided into anonymous pipes and named pipes. Anonymous … Read more
Below is a complete example of implementing communication between Qt C++ and Python using shared memory. This example consists of two parts: a Qt C++ application as the writer and a Python script as the reader. Qt C++ Writer (SharedMemoryWriter) // main.cpp#include <QCoreApplication>#include <QSharedMemory>#include <QBuffer>#include <QDataStream>#include <QDebug>#include <QThread> int main(int argc, char *argv[]){ QCoreApplication a(argc, … Read more
Hello friends! How are you all? Background Introduction Design of Shared Memory and Message Queue From the Perspective of the Parent Process Creation of Shared Memory and Message Queue Sending Messages Receiving Messages From the Perspective of the Stub Process Receiving Messages Calling Python Logic with pybind11 Summary This article introduces how to use shared … Read more
cpp-ipc: A High-Performance Cross-Platform Inter-Process Communication Library In modern software development, inter-process communication (IPC) is a crucial technology for enabling multi-process collaboration. cpp-ipc is a high-performance, cross-platform C++ inter-process communication library that utilizes shared memory technology to provide developers with an efficient, low-latency communication solution. Core Features The main features of cpp-ipc include: Cross-Platform Support: … Read more
Shared memory is an inter-process communication (IPC) mechanism that allows multiple processes to access the same memory area. It is highly efficient because data does not need to be copied between processes but is read and written directly in the shared memory. In this article, we will introduce how to use shared memory in the … Read more
1. Overview of Shared Memory Technology Shared Memory is one of the fastest inter-process communication (IPC) methods in Linux systems, allowing multiple processes to access the same physical memory area, thus avoiding the performance overhead of data copying between processes. Compared to other IPC mechanisms such as pipes and message queues, shared memory has the … Read more
Implementing Shared Memory in C: IPC Mechanism In operating systems, Inter-Process Communication (IPC) is a mechanism that allows different processes to exchange data. Shared memory is an important method of IPC that allows multiple processes to access the same physical memory. This method is fast and efficient, making it suitable for applications that require frequent … Read more
In a Python multithreading environment, one must choose between using the standard queue.Queue or torch.multiprocessing.Queue. I need to carefully analyze the differences between the two and their applicable scenarios, then provide recommendations based on the user’s specific needs. First, I need to recall the basic characteristics and design purposes of these two queues. queue.Queue is … Read more
Previous Part: Step One: Applying RT Real-Time Patch to Raspberry Pi Step Two: High-Speed SPI Communication Between Raspberry Pi and STM32 1. Robot Control Software Framework for Multi-Tasking In microcontrollers, we can use timer interrupts, software scheduling, or directly use embedded operating systems like FreeRTOS or UCOSII to achieve timed execution of different control tasks. … Read more