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Concurrency and Its Management Race condition can often lead to system crashes, memory leak,corrupted data,or security problem as well avoid the use of global variables The Linux Semaphore Implementation Semaphore #include <linux/semaphore.h> void s…
1.当多个线程访问共享硬件或软件资源的任何时候,由于线程之间可能产生对资源的不一致观察,所以必须显式管理对资源的访问. 2.内核中的并发管理设施: (1). 信号量: P操作将信号量的值减 1 ,判断值是否大于 0 ,如果大于 0 的话,进程继续执行.否则进入阻塞队列等待被唤醒.   V操作将信号量的值加 1, 判断值是否小于 0 ,如果小于 0 的话,首先唤醒被阻塞的进程,然后退出,否则直接退出. (2). 互斥体: 用于互斥的信号量. (3). 读写信号量: 允许多个并发的读,并对写进行互斥…
race conditions (when an anomalous result occurs due to an unexpected critical dependence on the timing of two events). A race condition occurs when two or more threads can access shared data and they try to change it at the same time. Because the th…
从本文开始介绍进程间的通信,进程间通信遇到的问题以及方式其实和线程之间通信是一致的,所以进程间通信的所有理论知识都可以用在线程上,接下来的系列文章都会以进程之间的通信为模版进行介绍,本文主要内容: 进程间通信简介(IPC) 进程间的竞争条件(Race Conditions) 一.进程间通信简介 InterProcess Communication(IPC).进程间通信主要从三个方面说: 一个进程如何把信息传递个另外一个进程 确保多个进程不会交叉,比如两个进程同时去订最后一张火车票,该怎么处理 进…
What is RCU, Fundamentally? https://lwn.net/Articles/262464/ If you can fill the unforgiving secondwith sixty minutes worth of distance run,“Highly scalable” your code will be reckoned,And—which is more—you'll have parallel fun! With apologies to Rud…
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Introducing the Go Race Detector 26 June 2013 Introduction Race conditions are among the most insidious and elusive programming errors. They typically cause erratic and mysterious failures, often long after the code has been deployed to production. W…
线程安全 定义 A class is thread-safe if it behaves correctly when accessed from multiple threads, regardless of the scheduling or interleaving of the execution of those threads by the runtime environment, and with no additional synchronization or other coo…
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原文:https://medium.com/rungo/anatomy-of-channels-in-go-concurrency-in-go-1ec336086adb -------------------------------- What are the channels? A channel is a communication object using which goroutines can communicate with each other. Technically, a ch…