ipc 4300

2.1 Android IPC IntroductionIPC means inter-process communication or cross-process communication, the thread is the minimum unit of CPU scheduling, is a limited system resources. A process generally refers to an execution unit. Any operating system requires a corresponding IPC mechanism. such as Windows can be done through the Clipboard pipe and mail slots, Linux can be shared by the name of the pipeline co

Article Title: a deep understanding of Linux inter-process communication (IPC ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The process communication methods in Linux are basically inherited from the process communication methods on the Unix platform. 　　 Collation 　　 The process communication methods in Linux

2.1 Android IPC Simple IntroductionIPC means inter-process communication or cross-process communication, the thread is the minimum unit of CPU scheduling, is a limited system resources.A process generally refers to an execution unit. Any operating system requires a corresponding IPC mechanism.such as Windows can be done through the Clipboard pipe and mail slot, Linux on the ability to share the content sema

development of the Linux IPCThe process communication methods under Linux are basically inherited from the process communication methods on the UNIX platform. The two main players at T - Lab and BSD(UC Berkeley's Berkeley Software Release Center), which have made significant contributions to the development of UNIX, have a different focus on inter-process communication. The former is a systematic improvement and expansion of the inter-process communication means of UNIX, which forms "system V

Null connections and ipc$ (Internet process connection) are different concepts. A null connection is a session that is established with the server without trust, in other words, it is an anonymous access to the server. Ipc$ is a named pipe that is open for interprocess communication, and you can obtain the appropriate permissions by verifying the user name and password. There are many tools that must be use

Piping (pipe) Piping is one of the most basic IPC mechanisms by which the pipe function opens up a buffer (called a pipe) in the kernel for communication, so the pipe in the user program looks like an open file via Read (Filedes[0]), or write (filedes[1]);int pipe (int filedes[2]);parameters : The Filedes parameter is passed to the user program in two file descriptor tables. Filedes[0] pointing to the read end of the pipe, filedes[1] pointing to

() { return String.format( "User:{userId:%s, userName:%s, isMale:%s}, with child:{%s}", userId, userName, isMale, book); } } BINDER:IPC angle: A cross-process communication mode in Android; Android Framework angle: ServiceManager connect various manager and corresponding ManagerService bridge Android Application layer: The medium of communication between client and server, when Bindservice, the server returns a Binder object containing

###################################################Shared Memory AreaShared memory is the fastest in the IPC format because shared memory does not exchange data with the kernel.A child process that is derived from fork does not share the memory area with the parent process.The shared memory area is divided into:1.posix Shared Memory Area2.system v Shared Memory areaThere are two forms of shared memory:1. Anonymous shared memory2. Well-known shared mem

Section reference: http://www.cnblogs.com/Anker/archive/2013/01/04/2843832.htmlThe persistence of IPC objects: http://book.51cto.com/art/201006/207275.htmMessage Queuing can be thought of as a list of messages that, before a process writes a message to a message queue, does not require another process to wait for the message to arrive on that queue, as opposed to a pipeline and a FIFO. The differences between POSIX Message Queuing and System V Message

1. Named Pipe (FIFO) The pipeline is described in the previous article "one of Linux processes communication (IPC)-Pipeline". However, a major defect in pipeline application is that there is no name, so it can only be used for communication between kinship processes. Later, the concept of named pipeline (named pipe, FIFO) was proposed based on the pipeline, and the restriction was overcome. FIFO is different from pipelines in that it provides a path n

Android IPC Mechanism (5) Use Socket to implement cross-process chat programs1. Socket Introduction Socket, also known as "Socket", is an abstraction layer between the application layer and the transport layer, it abstracts the complex operations on the TCP/IP layer into several simple interfaces for the application layer to call and Implement Process Communication in the network. It is divided into Stream sockets and data packet sockets, which corres

IPC inter-process communication + pipeline PipeIPC (Inter-Process Communication ).MPs queues are used to share data between processes. The essence is shared memory, one of the commonly used IPC. Pipelines can be used not only for communication between local processes, but also for cross-network process communication. Like Socket communication, pipelines also encapsulate the underlying network implementation

Linux inter-process communication (IPC) Programming Practice (7) use of shared memory-System V shared memory (API) The system call mmap mentioned in the previous blog map a common file to implement shared memory. The System V shared memory described in this article is to map files in the shm of a special file System to implement shared memory communication between processes. That is to say, each shared memory area corresponds to a file in the shm of t

Linux inter-process communication (IPC) programming practices (I) Basic concepts and anonymous Pipelines Inter-process communication can be achieved at least by sending open files. Different processes transmit information through one or more files. In fact, this method is used in many application systems. However, generally, inter-process Communication (IPC: InterProcess Communication) does not include this

1. Service Introduction There are two types of service: local and remote. Local is mainly used for calling between local applications, and remote is mainly used between different applications or processes. Here the aidl IPC Mechanism is used. For details about the aidl IPC Mechanism, refer to SDK Dev guide! Of course, it may take some time if you want to fully understand this mechanism, but I just want t

Method 1:NVRManagement Interface viewEnter the nvr ip address (192.168.1.240 by default) in the browser, enter the user name and password, and then log on to the NVR management interface.Set>Camera>Channel accessTo view the IP address of the corresponding IPC.You can right-click the nvr gui (display) and SelectMain menu, InSet>Camera settings>Channel accessThe IP address of the IPC.Method 2: PassTP-LINKSecurity client viewDownload and InstallTP-LINKSecuritySystemAnd connect the computer and

multi-threaded operation mechanism:You can set an activity to a process that is not available by setting the properties of a different android:process= "". Android allocates a separate virtual machine for each application (process), and different virtual machines have different address spaces on memory allocations, which results in multiple copies of objects accessing the same class in different virtual machines.So if we're going to use a multi-process implementation of an application, you'll e

use of Messengermessenger can be translated as a messenger, through which you can pass the message object in different processes, in the message to put the data to be passed, it is easy to achieve the process of data transfer. Messenger is a lightweight IPC scheme that implements the Parcelable interface and the underlying implementation is aidl. This can be seen from the way it is constructed: publicMessenger(Handler target) { mTarget = ta

Resources:1, "Android Development Art Exploration" chapter II 2.4.42. Android aidl Binder Framework parsing: http://blog.csdn.net/lmj623565791/article/details/384610793. Do you really understand the in, out, Inoutm in Aidl: http://www.open-open.com/lib/view/open1469494342021.html4, MU class network "aidl-small white growth in mind"1, Aidl IntroductionAndroid System rules: Each application has a single copy of the virtual machine, one application and another application does not have the means to

1. Content Provider IntroductionContent provider is one of the ways Android provides a way to share data between different applications, and from this point of view, it is inherently suitable for IPC (inter-process Communication, interprocess communication). The bottom-level implementation of Content provider is binder, but it is much simpler than aidl, so the system has been packaged for us.The Android system provides us with a number of content Prov