Developing and deploying OSGi Blueprint service using the WebSphere application Server OSGi Feature Pack
Introduction
As we all know, OSGi was originally an abbreviation for the Open Service Gateway Initiative, applied to home networking and mobile embedded devices. Then, thanks to the rapid development and huge user base of Eclipse, which followed the OSGi specification to refactor its plug-in mechanism, OSGi quickly developed into a de facto indus
We know that in Android, every application runs in a separate process, which also guarantees that when one of the programs has an exception, it does not affect the normal functioning of another application. In many cases, we work with the service of various systems, and it is clear that the program we write is definitely not the same process as the system service, but how do they communicate? Binder is one of the ways in which an inter-process communi
RPC (IPC) in Android is implemented by the binder component. Although we use more aidl, we will not directly use binder, however, it can help you better understand aidl and the principles and mechanisms of Android.Binder Architecture
Similar to the architecture of other android components, the binder is also composed of Java-layer encapsulation, JNI, libbinder, a
This article is based on the source code Scenario Analysis of the Android system, by Luo shengyang.
I. Test code:
~ /Android/external/binder/server
---- FregServer. cpp
~ /Android/external/binder/common
---- IFregService. cpp
---- IFregService. h
~ /Android/external/binder/client
---- FregClient. cpp
Binder Library (l
This article is based on the source code Scenario Analysis of the Android system, by Luo shengyang
I. Test code:
~ /Android/external/binder/server
---- FregServer. cpp
~ /Android/external/binder/common
---- IFregService. cpp
---- IFregService. h
~ /Android/external/binder/client
---- FregClient. cpp
Binder Library (li
.
The improvement of the ComboBox control is to support the master/slave scene, enter the main element, and display the corresponding details in the drop-down list.
ExperimentWe will focus our efforts on building Wijmo5, and we'll take some time to do something interesting. I'm talking about making our controls reach the extreme of the browser. Wijmo5 is from the experiment of ECMAScript 5.
We will try some new capabilities in the browser to see how quickly we can ma
: · Fkismetcompilervmbackend - Conversion FKCS script byte stream for unreal virtual machine. The byte stream is serialized into the script array of the function. · Fkismetcppbackend - generate a class for debugging C + + code. Copy class default object propertiesUse copypropertiesforunrelatedobjects () function, the compiler copies the value of the old default object to the new CDO. The property copy is serialized by the label. Only the same name can be converted correctly. In this phase the CD
1, use QT Object-oriented class inheritance to create the first window main part, using Setminimumsize (), setmaximumsize () to configure the main part window can be resize;Qwidget::setgeometry () window size on the screen display positionThe Qwidget::setgeometry () function sets the size and position of the window when it is first displayed on the screen and can be moved or resized after the window is displayed;Qwidget::setgeometry () Interpretation of 4 function parametersThe first 2 parameter
Cross-Domain Single Sign-On part 1-design blueprint
Http://www.codeproject.com/KB/aspnet/CrossDomainSSOModel.aspx
An asp.net independent domain name Single Sign-On solution.
Introduction
"On a Monday morning, you sigh in the office that the weekend is doing well, and this week may be a tough week. You have received an email. Of course it is not a good job offer,That's just another requirement of your customer. Your customer has several. net websites.
-commerce, e-government, Digital Library and other intelligent services. In addition, because computers have the ability to process large-scale information, it is critical to automatically process and utilize online information to computers as much as possible. To achieve this goal, people must enable computers to "understand" the information and make better use of it on the premise of "Understanding. Tim Berners-Lee, the inventor of WWW, describes the bluep
prepare bullets before you leave .We know that the process, the virtual address is different, is not directly communication, this is a protection mechanism. Open Task Manager and look at the N-ary process, just imagine what happens if these processes communicate directly?And the user space can communicate with the kernel space through system calls, if there is a module in kernel space, can complete the data forwarding, then is not two processes can communicate? Such as:The above mentioned some u
PrefaceIn the ServiceManager of Binder source analysis, we introduce the process of using binder to communicate, that is, after ServiceManager registers itself as "administrator", it is responsible for the add operation of other service, or other client's get operations. In this process, there are some interfaces we do not have in-depth analysis, such as:
1. Open Binde
4.3 struct binder_transaction_data: send and receive data packet structure
This structure is the standard format for Binder to receive/send data packets. Each member is defined as follows:
Table 5 structure of Binder send and receive data packets: binder_transaction_data
Member
Description
Union {Size_t handle;Void * ptr;} Target;
This Member specifies the destination of the sent da
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 read
mechanism is not unique to Android, any operating system requires an IPC mechanism, such as Linux can be named pipes, shared main memory, semaphores, sockets, Message Queuing and other ways to implement the IPC mechanism, Android is based on the Linux kernel, But wirelessly's IPC mechanism is not exactly the same as Linux, such as the binder mechanism is a feature of the IPC in Android, this IPC mechanism does not exist in Linux. This blog will expla
This article is based on the source code Scenario Analysis of the Android system, by Luo shengyang
I. Architecture code:
~ /Android/frameworks/base/core/java/android/OS
---- IInterface. java (Interface)
---- IServiceManager. java (IServiceManager)
---- IBinder. java (IBinder)
---- Binder. java (BinderProxy, Binder)
---- ServiceManagerNative. java (ServiceManagerProxy, ServiceManagerNative)
---- ServiceManag
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