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Standard (ansi c, POSIX, svid, xpg ,...)
Ansi c: This is the C language standard set by ANSI
First, prefaceClock is the basis of a timer, and any timer needs to work on a given clock. The kernel maintains a number of clock, the second chapter of this article describes the basic concept of clock and some statically defined POSIX clock.
Yang Sha ZhouOctober 2001
This is a column about POSIX thread programming. On the basis of clarifying the concept, the author will detail the POSIX thread library API. This is the third article to introduce thread synchronization.
I. mutex
This is a column about POSIX threading programming. Based on the clarification of the concept, the author will give you a detailed account of the POSIX line libraries API. This article is the third article that will tell you about thread
Daniel RobbinsPresident/CEO, Gentoo Technologies, Inc.July 2000
POSIX (interface with portable operating system) threads are a powerful means to improve code response and performance. In this series, Daniel Robbins precisely shows you how to use
A simple tool supporting Memory SharingPOSIX (interface with portable operating system) threads are a powerful means to improve code response and performance. In this series, Daniel Robbins precisely shows you how to use threads in programming. It
I. POSIX semaphores
For more information about semaphores, see here. SystemV semaphores, now POSIX semaphores.
System V semaphores can only be used for synchronization between processes, while POSIX semaphores can be used for synchronization between
POSIX semaphores are real-time extensions that are part of the POSIX standard system interface definition. The XSI IPC defined in the SUS (Single UNIX specification) specification also defines the system interface that people commonly refer to as
Mutex lock
Although the IPC semaphore mechanism can also be used in POSIX thread to implement mutex functions, the semphore function is obviously too powerful, the POSIX thread defines another set of mutex functions for thread synchronization.
1.
One, POSIX signal volumeThe 1.Posix semaphore is divided into two types:1. Known semaphores: Using POSIX IPC name identifiers (known semaphores are always available for synchronization between threads and for inter-process synchronization)2. Memory
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