orange binder

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

Binder works on the Linux layer, is a driver that does not require hardware, from a threading perspective, the binder code runs in the kernel state, the client program uses binder is done through the system call.Binder is a monolithic architecture that includes server-side interfaces, binder drivers, and client interfa

6 Binder memory ing and receiving cache zone management For the time being, let's take a look at how data arrives at the receiving end from the sending end in the traditional IPC method? Generally, the sender stores the prepared data in the cache and calls the API to enter the kernel through system calls. The kernel service program allocates memory in the kernel space and copies data from the sender's cache to the kernel cache. When the receiver reads

Binder is the core of Android's interprocess communication, if you look at the Android source code, you will find that the source of Android's various core services are through the binder mechanism to communicate with each other. In the client part of binder, the server side is accessed through proxy mode. This is to introduce the Java Layer

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

Although Android is built on Linux, it implements a lightweight IPC Mechanism instead of using Linux to provide the IPC Mechanism.-- Binder Mechanism. And androidBased on the Binder Mechanism, the android framework provides a set of encapsulation that can implement object proxy (proxy for objects in Remote Processes in local processes ). This article briefly analyzes androidBinder Mechanism.Binder Scenario

In Asp.net MVC, Model Binder is a very important part in the lifecycle. The process of Model Binder can help you understand what happened behind Model Binder. In addition, this series of articles lists the extension points of Model Binder in MVC and how to use these extensions. Reading Directory: 1. workflow 2 of Model

Binder Proxy technical solution, binderproxyBinder 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 solution is that it is too low-layer. After successful interception, it is quite troublesome to parse the communication data. in addition, there are also a bunch of compatibility issues. Due to different Android

If you only use services locally in an application and do not need to work across processes, You can implement your own binder class, use it to directly provide your client with the ability to access public methods in the service. Note:Generally, the client and server only work in the same application and process. For example, for an application that needs to play music well, you need to bind the music playing service working in the background to an a

Binder mechanism is An important means of cross-process communication in Android system. the interaction betweenService and Activity is used in this mechanism. To this end, I have written a small service case, in order to facilitate a better understanding of binder communication mechanism. Service Code: Public classMyServiceextendsService { Public Booleanflag=true; intcount; //Instantiate a binderServicebi

Android binder Mechanism 2 (client and common server), androidbinder Before talking about the communication between them, let's take MediaServer as an example to see what common Server processes are doing. Int main (){...... // Obtain the ProcessState instance sp Defaservicservicemanager () has been introduced in the previous article.MediaPlayerService: instantiate () is implemented as follows, that is, addService to ServiceManager, which is simila

First, let's take a look at the sequence chart for running the android binder system: (This figure is from Google Search) From the time sequence diagram, the entire android binder system is still somewhat complicated, but careful analysis may find that the operating mechanism of the entire android binder seems to be similar to a common system architectu

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

1. What is binder? Intuitively, Binder is a class in Android that inherits the IBinder interface From the perspective of IPC (inter-process communication, interprocess communication), Binder is a cross-process communication in Android, and Binder can be understood as a virtual physical device whose device driv

________________________________________ 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