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introduction The corresponding dependency library needs to be copied for software release. windows can use the windeployqt provided by qt, and linux also has the corresponding open source tool linuxdeployqt The general principle is to find the path of the corresponding dependent Library of the executable file through the command line, such ...

Introduction to interprocess communication Concept of interprocess communication Process communication refers to the transmission of data (exchange of information) between processes Purpose of interprocess communication Data transfer: one process needs to send its data to another processResource sharing: multiple processes share the sam ...

do_fault refers to the processing of file page fault. When vma is specifically mapped to a file, page fault will be regarded as file page fault: static vm_fault_t handle_pte_fault(struct vm_fault *vmf) { ... ... if (!vmf->pte) { if (vma_is_anonymous(vmf->vma)) return do_anonymous_page(vmf); else return do_fault(vmf) ...

CL236 client configuration – mount via nfs This chapter describes how to use clients for NFS mounting and GlusterFS storage. RHCA column address: https://blog.csdn.net/qq_41765918/category_11532281.html Red Hat Gluster storage volumes and NFSv3 By default, any new Red Hat Gluster storage volumes will be exported via NFSv3 wi ...

Signal generation Concept of signal Signaling is a way of asynchronous notification of events between processes, which belongs to soft interrupt Generation method: Generate a signal to the process through the terminal keyboard. If the process can terminate the program by pressing "ctrl + c" when running, it is actually sending ...

Step 1: install the LAMP environment 1. First update the system software package to the latest version yum update 2.. After the package is updated, you can now install LAMP (Linux, Apache, MySQL and PHP) using all required PHP modules, as shown in the figure yum install httpd php php-common php-curl php-xml php-json php-mbstring php-zip php ...

1, Introduction to multitasking Multitasking: multiple tasks are executed at the same time, which is multitaskingpython programs are single task by default 2, [key] thread - basic use Thread is the basic unit of CPU scheduling Main thread: after the program starts, there is a default main thread, which is usually called the main thre ...

Absrtact: let's discuss this problem today. In the normal waving process of TCP, it is at time_ What happens when a connection in wait state receives a SYN of the same Quad? This article is shared from Huawei cloud community< At time_ What happens to TCP connections in wait state after receiving SYN? >, author: Kobayashi coding. At th ...

supplement /bin stores commands that can be operated in single user mode /Software / command / script that will not be used when usr/sbin Linux system starts up /Under usr/bin are all executable programs pre installed by the system, and the system upgrade may be overwritten /The usr/local/bin directory is where users can place t ...

1, Mapping from linux physical address to virtual address linux cannot directly operate the physical address. If you need to operate the hardware, you need to convert the physical address into a virtual address first. Because linux enables MMU, you cannot directly operate the physical address. 1. What are the benefits of enabling MMU? (1) Make ...