Signal Handling

Understanding the Basic RTOS Features of VxWorks: A Practical Guide for Engineers

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Understanding the Basic RTOS Features of VxWorks: A Practical Guide for Engineers

Understanding the Basic RTOS Features of VxWorks: A Practical Guide for Engineers VxWorks is a real-time operating system (RTOS) developed by Wind River, widely adopted in mission-critical embedded systems. This article will introduce the fundamental features of VxWorks, including task control, inter-process communication (IPC), signal handling, and virtual devices, along with practical code examples. Why … Read more

Interrupt Handling and Interrupt Service Routines in C Language

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Interrupt Handling and Interrupt Service Routines in C Language

In the development of embedded systems and operating systems, interrupts are an important mechanism. They allow programs to respond immediately to specific events without the need to constantly poll device status. This article will provide a detailed introduction to interrupt handling in C language and its related concepts, suitable for beginners to learn. What is … Read more

Signal Handling in C: Capturing and Processing Signals

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Signal Handling in C: Capturing and Processing Signals

In C, a signal is an asynchronous event used to notify a program that a certain condition has occurred. Signals can be generated by the operating system, hardware, or the program itself. Common signals include process termination and illegal memory access. In this article, we will introduce how to capture and handle these signals in … Read more

Embedded Linux: Asynchronous I/O

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Embedded Linux: Asynchronous I/O

In embedded Linux, Asynchronous I/O (AIO) is a powerful I/O model that allows processes to continue executing other tasks while waiting for I/O operations to complete. Compared to I/O multiplexing mechanisms (such as select and poll), asynchronous I/O uses a signal notification mechanism, allowing processes to avoid repeatedly polling the I/O status. Instead, the kernel … Read more

Applications and Examples of Signal Handling in C Language

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Applications and Examples of Signal Handling in C Language

Applications and Examples of Signal Handling in C Language Signal handling is an important concept in operating systems and programming, especially in C language, as it allows programs to respond to asynchronous events such as user input, timer expirations, or signals from other external devices. In this article, we will explore the basic principles of … Read more

C Language Interview: Signal Handling and Inter-Process Communication

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C Language Interview: Signal Handling and Inter-Process Communication

C Language Interview: Signal Handling and Inter-Process Communication In modern operating systems, inter-process communication (IPC) and signal handling are two very important concepts. In C language interviews, examiners often focus on these two topics as they involve crucial aspects of system programming. This article will detail the basic concepts of signal handling and inter-process communication, … Read more

Signal Handling in C: Capturing and Managing Signals

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Signal Handling in C: Capturing and Managing Signals

Signal Handling in C: Capturing and Managing Signals In C, a signal is a mechanism used to notify a program that a specific event has occurred. These events may be triggered by external systems, such as user input (like Ctrl+C), software faults, or timer expirations. Signals can interrupt the normal execution flow of a program … Read more

Signal and Interrupt Handling in C++

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Signal and Interrupt Handling in C++

Signal and Interrupt Handling in C++ In operating systems, signals and interrupts are two important process control mechanisms. Signals are typically used to notify a program of certain events, while interrupts are responses to hardware events or changes in conditions. In C++ programming, using signals allows for asynchronous event handling, making it crucial to master … Read more

Smooth Upgrades for HTTP Services in Go: Signal Handling Mechanism | Zero Downtime Deployment

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Smooth Upgrades for HTTP Services in Go: Signal Handling Mechanism | Zero Downtime Deployment

Click the “blue text” above to follow us Late at night, the production environment needs code updates, but we cannot affect user experience? Every backend developer has likely faced this situation. I remember when I first encountered this problem, the whole team was confused. Restart the service? Users would be furious. Not updating? Bugs won’t … Read more

Embedded Linux: Asynchronous I/O

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Embedded Linux: Asynchronous I/O

Click the aboveblue text to follow us In embedded Linux, asynchronous I/O (AIO) is a powerful I/O model that allows processes to continue executing other tasks while waiting for I/O operations to complete. Compared to I/O multiplexing mechanisms (such as select and poll), asynchronous I/O uses a signal notification mechanism, allowing processes to avoid repeatedly … Read more