Programming VIP

1, Experimental purpose Disk is a high-speed, high-capacity, rotating and directly accessible storage device. As the auxiliary memory of computer system, it undertakes heavy input and output work. In modern computer system, there are often several input and output requirements requiring access to disk at the same time. The system can adopt a ...

Principle of anonymous pipeline The following system call is required to create a pipeline int pipe(int fd[2]) Here, we create a pipe and return two file descriptors, which represent both ends of the pipe. One is the read descriptor fd[0] of the pipe and the other is the write descriptor fd[1] of the pipe Let's look at how it is implement ...

In the previous sections, we learned how to organize virtual memory space and how to manage physical pages. Limitation we need some data structures to manage the two mmap principle Each process has a list vm_area_struct, which points to different memory blocks in the virtual address space. This code is called mmap struct mm_struct { struct ...

Deploying k8s clusters in kubedm mode Official documents: <https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/> Remember to turn off the firewall and selinux. The number of cpu cores should be at least 2 Official documents for kubedm deploying k8s highly available clusters: <https://kubernet ...

! Description: In the last 5 days, I have read the basic MySQL chapters of Master Kang of Shangxi Valley (forcing JVM) and shared some notes, mark, mark! 1. Subqueries A subquery is a query whose statement is nested within another query statementUse Attention Subqueries need to be enclosed in parenthesesPlace subqueries to the right of the ...

How does the partner system allocate memory Partner system The partner system is derived from the Solaris Operating System of Sun company. It is an excellent physical memory page management algorithm on the Solaris Operating System. However, good things are always easy to be stolen or imitated by others, and the partner system has also be ...

Partition allocation algorithm based on sequential search In order to realize dynamic partition allocation, the free partitions in the system are usually linked into a chain. The allocation method based on sequential search is to search the free partitions on the free partition chain in turn to find a partition whose size can meet the requirem ...

First: Preface This question requires knowledge of the security checking algorithm for the previous one, so it is strongly recommended that you look at the previous one first. 7-1 Banker Algorithm - Security Check (20 points) 2: Title Enter N processes (N<=100) and M-class resources (M<=100), initialize the total number of resources, a ...

explain Anonymous pipeline, which can only be used between processes with kinship, greatly limits the use of pipeline. The emergence of well-known pipeline breaks through this limitation. It can enable two unrelated processes to communicate with each other. The pipeline can be indicated by a pathname and is visible in the file system. Aft ...

1. Experimental Requirements 1. Goals Implement an interpretive language, Ulanguage, in C, so that it can be executed in the terminal Java and Python are explanatory languages that require an interpreter to interpret execution at execution time - interpret an instruction when you see it (advantages: cross-platform; disadvantages: ineffici ...