; It is found that the waiting threads are fetched to the lock in the order in which they were blocked. This is because Aqs is based on a CLH lock queue variant called to implement the thread blocking queue, and our next article will simply understand the next CLH lock queue.Follow-up articles are planned as follows:
Java AQS framework of Source Learning (ii) CLH lock queue and spin lock
Aqs framework of Java and Contract source Learning (iii) Locksupport
Java and
of the program in the output variable value, first output the string "This is num:".System.out.println ("This is num:" + num);In this statement, the plus sign "+" before the variable num means that the value of NUM is concatenated with the string in front of it, and then the contents of the resulting string are output (in fact, the variable num is converted to a string by its value and then the value is then concatenated with the string before the plus sign.)4, the next statement will be the va
There is types of frame structure in the LTE standard, type 1 and type 2. Type 1 uses Frequency Division duplexing (Uplink and downlink separated by Frequency), and TDD uses time division Duplexin G (Uplink and downlink separated in time). This overview covers both LTE FDD Type 1 signals and LTE TDD type 2 signals described in the standard documents listed in The About Opts BHD and bhe:lte modulation analysis topic.
This
An overview of the "HTTP authoritative guide" mind mapping
article author:yrq110
original link:http://yrq110.me/2017/03/04/20170304-http-mindmap/
HD Artwork: please drop down to read the original view
HTTP Authoritative Guide Map directory
Overview-summary
Message-message
Connection-connection
Agent-proxy
Cache-cache
Gateways, tunnels and trunks-gateway, tunnel and Relay
Identify-identification
Certified
2017-02-09 top-down: Transport Layer overview, Transport layer and network layer relationships, multiplexing and multiplexing, UDP introduction
Logical communication (logic communication), transport beginning (segment), Best effort delivery service (Best-effort delivery service), unreliable services (unreliable service), Multiplexing (Transport-layer multiplexing), multi-channel decomposition (demultiplexing), data transfer (reliable data transfer), c
This article mainly introduces Python functional Programming Guide (i): Functional Programming Overview, this article explains what is functional programming overview, what is functional programming, why the use of functional programming, how to identify functional style and other core knowledge, the need for friends can refer to the
1. Functional Programming Overview
1. Course OutlineThis lesson mainly introduces MongoDB background knowledge and MongoDB installation and configuration, so that you have a first understanding of MongoDB.Its basic points of knowledge include:
NoSQL Database Overview
A brief introduction to MongoDB database
Installing MongoDB database under Linux
Install MongoDB database under MAC and Windows
2. Brief introduction of the course
MongoDB is a nosql type
, only one source of information can be an authoritative source. In traditional NIS, the NIS source is authoritative information. When using the n2l service, the authoritative data source is from the LDAP directory. As described in Chapter 9th, basic components and concepts of LDAP (Overview), the directory is managed by using the Directory management tool.
The NIS source is retained for emergency backup or uninstallation only. After using the n2l ser
Postfix is the MTA mail transmission agent developed by Wietse Venema under the ibm gpl protocol. The following section is taken from postfix's official site http://www.postfix.org ):"Postfix is an attempt by Wietse Venema to provide alternatives to the most widely used sendmail. In the Internet world, most emails are delivered through sendmail. About 1 million users use sendmail to deliver hundreds of millions of emails each day. This is a real surprising number. Postfix tries to be faster, eas
The key to performance optimization is to find the right direction, for example, for a PL/SQL code, we think it is slow to execute, but in the end it needs a measurable tool to analyze, and we sometimes like to leave debug code in it, like using dbms_utility.get_ Time is spent on the execution of the statement, which can be cumbersome if the code is large.PL/SQL Developer provides this functionality, as described herePL/SQL Developer Overview charts c
Information collection attacks
Information collection attacks do not pose any harm to the target. Such attacks are used to provide useful information for further intrusion, as shown in the name. It mainly includes scanning technology, architecture spying, and the use of information services.
1. Scan Technology
(1) address scanning
Overview: Use a program such as ping to detect the target address and respond to it to indicate its existence.
Defense: fi
Overview of the ASP. NET application life cycle for IIS 7.0Updated: November 2007This topic describes the application life cycle of an ASP. NET application that runs in Integrated mode in IIS 7 and that runs with IIS 7.0 or later versions. IIS 7.0 also supports Classic mode, which behaves like an ASP. For more information, see the ASP. NET application Life cycle overview for IIS 5.0 and 6.0.The IIS 7 integr
Application
Microsoft Application Center 2000 Component Load Balancing Technology Overview
Author: Chris Rees
This technical overview will discuss Microsoft Application Center (Application Center) Component Load Balancing technology (CLB).
Introduction
Microsoft Application Center (Application Center) is part of the Enterprise server, and Enterprise server is a Microsoft company-launched. NET Part of the
----------------------------I'm a split line-------------------------------This article is translated from the Microsoft white Paper SQL Server in-memory OLTP Internals Overview: http://technet.microsoft.com/en-us/library/dn720242.aspxTranslators are limited, and if there is any improper translation, please correct them.----------------------------I'm a split line-------------------------------Native compilation of tables and stored proceduresIn-memor
Tags: style blog http io os using AR file data----------------------------I'm a split line-------------------------------This article is translated from the Microsoft white Paper SQL Server in-memory OLTP Internals Overview: http://technet.microsoft.com/en-us/library/dn720242.aspx----------------------------I'm a split line-------------------------------Overview of the internal mechanisms of SQL Server in-m
Packet Tracer entry One, switch overview The switch works at the OSI (Open Systems Interconnect Reference Model) data link layer, and any two network nodes (network devices) that access the switch are bandwidth-exclusive. Second, the switch principle switch has a very high bandwidth of the back bus and the internal switching matrix. All the ports on the switch are hooked up on the back bus, and after the control circuit receives the packet, the proces
I. Overview JavaScript is a kind of programming language with object-oriented ability and interpretive type. That is, it is object-and event-driven and has a relatively secure client-side scripting language. Because he doesn't need to run in a language environment, it only needs to support its browser. Its main purpose is to verify the data sent to the server side, increase the web interaction, enhance the user experience and so on. Second, the chara
Chapter One: Overview of C language and how to run C program on machineLet programming change the worldThe
C Language OverviewThe development process of C languageThe C language was invented in the early 70. In 1978, the C language was formally published by the American Telephone and Telegraph Company (T) Bell Laboratory. At the same time by B.w.kernighan and D.m.ritchit co-authored the famous "The C programming LANGUAGE" a book. Usually referre
Overview of C + +:Developed by Bjarne Stroustrup at T-Bell Laboratory, derived from C language, compatible with C languageCompared with JavaAdvantagesC + + faster than JavaC + + is more flexible in inheritance and derivation than JavaC + + can be directly inserted into the assembly can directly manipulate the underlying hardware, so the operating system must be written in CJava to C + + must be done, C + + to get Java is not necessarilyC + + compiled
8.1 Overview 8.1.1 ORM FrameworkORM Full-Name Object-relational mapping (Object/relation Mapping), which refers to the automatic mapping of Java object State to data in a relational database, provides transparent persistence support, which translates one form into another.There is a mismatch between the object and the relational database, and we call this mismatch the impedance mismatch, which is mainly manifested in:
Relational database firs
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