Tag: lexer

From BIO to NIO, multiplexers, from theory to practice, compare their respective efficiencies and characteristics with actual cases (Part 2)

Article directory Introduction to multiplexers Two stages of multiplexer Multiplexer encapsulation in Java test code Pressure test results Summarize This article is the next article from BIO to NIO and multiplexers, from theory to practice, and comparing their respective efficiencies and characteristics with actual cases (Part 1). If you haven’t read it, you can read […]

[NIO multiplexer]

Article directory Summarize: Three cores of NIO Buffer buffer Channel Selector selector Comparison of NIO and BIO Multiplexer/Selector (Selector) Analysis of NIO non-blocking network communication principle Implementation process summary Summary: The three core parts of NIO are buffer, channel and multiplexer. It is an improvement for bio. The disadvantage of bio is that one client […]

Combinational logic circuit design — multiplexer

Directory 1. Introduction to Multiplexer 2. Hardware design 3. Experimental tasks 4. Programming 4.1. Module design 4.2. Draw waveform diagram 4.3, write code (1) Implementation method of the conditional operator (ternary operator) in assign: (2) Use the if-else implementation method in the always statement block: (3) The method of using the case statement in the […]

Simple instance of I/O multiplexing select/poll/epoll multiplexer

select & poll #include <sys/select.h> /* According to earlier standards */ #include <sys/time.h> #include <sys/types.h> #include <unistd.h> int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout); // Four macros closely combined with select: void FD_CLR(int fd, fd_set *set); int FD_ISSET(int fd, fd_set *set); void FD_SET(int fd, fd_set *set); void FD_ZERO(fd_set *set); select: […]

[Solved] ANTRL compiles the HiveLexer.g file and reports an error syntax error: antlr: NoViableAltException(@[])

Table of Contents Project scene: Problem Description Cause Analysis: solution: Project Scenario: The need to obtain data blood relationship by programming is not common for data warehouses. Only when the scale of data reaches a large level, or the number of reports with complex data production relationships increases to a large degree, separate data blood […]