messenger binder

When more than one client makes a request to the server, it creates multithreading to process the request if the server is not busy.Then who's going to judge?The server process has a BINDER_PROC structure with a todo list (with the data sent by the client) and wakes up the thread waiting on the binder_proc.wait, and if the threads wait on wait, the surface server process is busy. If the wait is over, the surface server is too busy, and the driver will give feedback to the application(1) drive to

Learning notes for ASP. net mvc 4 practice 11: Model binder and value providers, 1. Create a custom model Binder: The process of creating a Model object using request data and passing the object to an action parameter is called Model Binding ). Most of the time, the action parameter is the primary key of the object or other unique identifiers, so we do not have to place a piece of repeated data access code

I. Main communication methods between processes in Linux 1. Socket; 2. Name pipe name pipeline; 3. Message Queue; 4. Singal semaphore; 5. share memory shared memory; 6. semophore semaphore Ii. Main communication methods of the Java System 1. Socket; 2. Name pipe; Iii. Main communication modes of Android system Binder Communication Pipe Socket Share memory 4. What are the advantages of binder communicatio

In the above "Binder Mechanism 2 of Android system -- Service proxy object (1)", we learned the Service proxy object bpbinder at the C/C ++ layer of the process, and the underlying Processing Method of binder. In this article, we will analyze in depth the creation and use of Service proxy objects at the Java layer of the process.C/C ++ and Java layers of the android process In Android, most programs are dev

Objective Interlacing as Foster, the same sentence applies at any time, the same professional, deep down, the difference is also huge. Today, talk about how you learn about the mechanics of binder interprocess communication. At first, it was only known that Binder was a very low-level thing, and it was not even clear what was being used. There are two main ways of doing this: Read the

________________________________________ Http://www.angryredplanet.com /~ Hackbod/openbinder/docs/html/binderprocessmodel.html The binder uses a customized kernel module for inter-process communication. This is used to replace the standard Linux IPC facility, so that we can effectively model the IPC operation as "thread migration ". That is to say, in the IPC between processes, if the thread-triggered IPC has jumped onto the target process, execute th

Abstract: The working mechanism of Binder is analyzed . This paper first briefly describes the comparison between the binder mechanism in Android and the traditional Linux process , and then the process analysis based on the binder interprocess communication. Combine development examples (AIDL)to learn about Binder

Service Manager is one of the core components of binder interprocess communication:It plays the role of binder between the interprocess communication context ManagerResponsible for managing service components in the systemProviding services to the client component to obtain proxy objectsFirst, Service manager start-up1, ServiceManager is initiated by Init, startup script in System/core/rootdir/init.rc.Servi

This article refers to "Android system source code scenario analysis", author Luo ShenyangFirst, the test code:~/android/external/binder/server----FregServer.cpp~/android/external/binder/common----IFregService.cpp----IFregService.h~/android/external/binder/client----FregClient.cppBinder Library (Libbinder) code:~/android/frameworks/base/libs/

Basic knowledge of the Linux kernel: process isolation/virtual address space : In the operating system, in order to protect a process from interfering with each other, a technology called "process isolation" is designed to prevent process A from manipulating process B's data. While the process isolation technology uses the virtual address space, the virtual address space of process A is different from the virtual address space of process B, and if notification between process and proces

IP MessengerDetailed analysis IP Messenger is a LAN chat and file transmission tool with many advantages, For example, data communication requires no server establishment, direct communication and data transmission between two computers, and supports transmission of files and directories, which is safe, fast, and convenient, therefore, many companies use it as a department or internal im tool.In terms of program structure, IP

From: http://www.cnblogs.com/JeffreyZhao/archive/2007/11/10/add-web-live-messenger-to-your-page.html Live Messenger dialog box A chat dialog box is often displayed in the blog of some friends, which allows users who are browsing the site to chat. But in my opinion, this function is just like a chicken-who knows who is browsing and who can chat? However, when I browsed lovecherry's blog today, a Live

Android Binder Basics PointA comparison of traditional IPC and binder mechanismsTraditional IPC:1) receiver pays can not obtain the other party process reliable uid/pid, so that the identity of the other person can not be identified.2) The access point is open and the private channel cannot be established.3) socket, pipeline and message queue require two copies of data, transmission efficiency is poor.4) Th

The use of root in Android to implement the System_server in the binder of the IOCTL call interceptionCategory: Android2013-06-19 18:09 779 people read comments (0) favorite reports Author: PassionTime: 2012-10-18,13:53:53Links: http://bbs.pediy.com/showthread.php?t=157419The use of root in Android to implement the System_server in the binder of the IOCTL call interceptionPassion2012-10-18Keywords: Andr

Binder proxy technical solution Author's low-end coders Time: 0x0 Several friends tried to hook the ioctl of system_process to intercept the IPC communication of the system. The disadvantage of this method is that it is too low-layer. After successful interception, it is more difficult to parse the communication data. in addition, there are also a bunch of compatibility issues, because different Android firmware versions have some modifications to som

Live Messenger dialog box A chat dialog box is often displayed in the blog of some friends, which allows users who are browsing the site to chat. But in my opinion, this function is just like a chicken-who knows who is browsing and who can chat? However, when I browsed lovecherry's blog today, a Live Messenger dialog box was displayed on the left side of the bar for chatting, which immediately aroused m

In this article, we will thoroughly analyze how to register a service with the system. In the example in the first article, exampleservice registers a service with the system using the following statement. // File: exampleservice. cpp In the previous article, we know that the reference of the servicemanager proxy object of the current process can be obtained by calling the defaultservicemanager () global function. Before in-depth analysis of the addservice () method, let's take a look at how s

Binder: a paper clip or paper clip. We often use pins to separate two sheets of paper. In the Android system, binder is the basic framework used to complete inter-process communication IPC, that is to say, different processes are separated so that each process can transmit messages to each other. If you have developed a Java server, you can also think of it as an RPC call, that is, directly calling function

The easiest cross-process communication (Messenger) in the history of android )!, Androidmessenger No need for AIDL, complex ContentProvider, SharedPreferences, or shared storage files! You only need easy-to-understand Messenger, which is also called a Messenger. It can be used to transmit message objects in different processes, put the data we need to transmit i

Visual|window now have a lot of network management software has the network information real-time transmission function, although some network communication software function is quite powerful, some software not only can transmit the text information, but also can transmit the binary file and so on. But they all have an insurmountable disadvantage, that is, distribution is more difficult, both computers need to install communication software client and server software, and only if both sides ope