messenger binder

Tags: Android style blog HTTP Io ar use SP strong 1. Binder communication mechanism Introduction In this article, we will first compare the difference between the Binder Mechanism and the Linux communication mechanism, to understand why Android is getting better, and then refer to binder. Next, we will understand what service manager is and what role it plays

1. Binder communication mechanism Introduction In this article, we will first compare the difference between the Binder Mechanism and the Linux communication mechanism, to understand why Android is getting better, and then refer to binder. Next, we will understand what service manager is and what role it plays in the C/S model based on the

1. Binder communication mechanism Introduction In this article, we will first compare the difference between the Binder Mechanism and the Linux communication mechanism, to understand why Android is getting better, and then refer to binder. Next, we will understand what service manager is and what role it plays in the C/S model based on the

1. Binder communication mechanism Introduction In this article, we will first compare the difference between the Binder Mechanism and the Linux communication mechanism, to understand why Android is getting better, and then refer to binder. Next, we will understand what service manager is and what role it plays in the C/S model based on the

driver to release the memory block.It can be found that the data has been copied once, so binders are less efficient than shared memory.Higher-level IPC abstractions in Android, such as intent (a command that carries associated data across process components), Messenger (an object that supports cross-process message communication), ContentProvider (a component that exposes a cross-process data management interface), are based on

Starting from this blog, will go into the Binder Mechanism Analysis series, the order is to explain the framework of the binder mechanism, after understanding the overall idea, then deep analysis of the details of the implementation of each layer, and finally to achieve a local service.The history of 1.BinderBeOS is an operating system run on BeBox hardware developed by be company in 1991, unlike other oper

Two-way communication between processes through Messenger and Service in Android The Service and its caller in Android can be in the same App or in different apps. If the Service is in App1 and the client that calls the Service is in App2, we can use the Service to implement inter-process communication. This article describes how to use bindService and Messenger to implement inter-process communication (IPC

The following is an overview of the four objects involved in binder communication: Binder local object, Binder entity object, Binder Reference object, Binder proxy object life and death.1. Binder Communication Interaction ProcessT

(1) What is Binder With the development of the Android mobile device platform system, more and more people are paying attention to the Binder Mechanism. What is Binder? In general, binder is a lightweight IPC component framework, and binder is a distributed component archite

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/

Here are just a few outlines, to understand the details, also see the source code:Affirmation: I rookie, hope to get the great God Guidance twos, more than heart foot hasBinder Equipment:/dev/binderBinder interprocess communication involves four roles:Client Service ServiceManager Binder DriverOne, binder driverSOURCE Location: kernel/[vendor]/[codename]/drivers/staging/android/binder.cKernel/[vendor]/[code

Talk to the interviewer about Binder (2) and the interviewer about binder The interviewer said, "as you said just now, in the Android system, Binder is used for inter-process communication. How can I hear that AIDL is also used for inter-process communication? ". In fact, AIDL is only a descriptive Language. Its full name is Android Interface Definition Language,

class for sending and receiving messages across processes * You Can See That Messenger is a Messenger, is an Object */public final class Messenger implements Parcelable {// is actually a remote MessengerService AIDL interface private final IMessenger mTarget; // create a Messenger pointing to the target Handler, then,

Talk to the interviewer about Binder (1) and the interviewer about binderThe interviewer was too busy. After a long time, he remembered me, so he called me again by phone. He said he wanted to know more about the Binder. In fact, I don't know much about the Binder, but I think people have asked me. If I don't want to say anything, where should I put this face? Th

The following articlesArticleIs a more in-depth analysis of the binder mechanism. Directory 1.Android-Binder Mechanism-servicemanager 2. Android-Binder Mechanism-General Service Registration 3. Android-Binder Mechanism-get common service 4. Android-Binder Mechan

The front LocalService primarily provides the same application components to use if you want to support different apps or processes using the service. can be via Messenger. Using Messgener can be used to support interprocess communication without using AIDL.The following steps explain how to use Messenger: Define a handler in the service to handle requests from the client. Use this handler to c

The starting point originates from the main function of the TestClient.cpp:int Main () { defaultservicemanager (); "service.testservice")); SP (binder); CS-Test (); return 0 ;}The previous article has analyzed that SM is new Bpservicemanager (new Bpbinder (0)), so Sm->getservice (...) Should look for Bpservicemanager::getservice (...), frameworks/native/libs/binder/iservicemanager.cpp:134

Android player path: java-layer Binder and Android binder Many people refer to the proxy mode when talking about Binder. There are a lot of people, and there is little understanding of the essence. This article analyzes the design objectives, design ideas, and design defects of the java-layer BInder from the perspectiv