Multithreaded Programming in Embedded Linux 1. What is a Thread? 1.1 Essence of Threads A thread is the smallest execution unit scheduled by the operating system, sharing the resources of a process (memory, files, etc.), but possessing independent: Stack space (for storing local variables) Register state (program counter, etc.) Thread ID and priority 1.2 Comparison … Read more
In modern computers, multi-core processors have become mainstream. To fully utilize these hardware resources, we can improve program execution efficiency through parallel computing. This article will introduce how to implement simple parallel computing in C and demonstrate how to optimize using multi-core processors. What is Parallel Computing? Parallel computing refers to breaking down a task … Read more
Interviewer Question: How can threads be reclaimed in Linux? What are the common methods? Candidate Reference Answer: In POSIX thread (<span><span>pthread</span></span>) programming, after a thread finishes, some information (such as return value and exit status) is retained for other threads to use. If these resources are not reclaimed, it may lead tothread resource leakage. Common … Read more
Thread Synchronization and Mutex Mechanisms in C Language In multithreaded programming, multiple threads may access shared resources simultaneously, which can lead to data inconsistency and unpredictable program behavior. To avoid these issues, we need to use thread synchronization and mutex mechanisms. This article will detail several commonly used synchronization and mutex mechanisms in C language, … Read more