ipc 4300

Reprint please keep the original address http://blog.csdn.net/guodongxiaren/article/details/43876207 Overview Three IPC mechanisms (Message Queuing, semaphores, and shared memory) have been invented on System V ("system Five") systems, often referred to as System V IPC. It was also called XSi IPC because it was later included in the XSI standard of UNIX. So when

Catalogue Directory Overview The socket function uses struct Sockaddr_un Socket Bind Listen Accept Connect Socket IPC Instance Server Client Run results OverviewThe socket API was originally designed for network communication, but later developed an IPC mechanism on the socket's framework, UNIX Domain socke

Android uses AIDL for cross-process communication (IPC) Before you do anything, do not think it is very difficult, because you have been afraid of it before you begin, this will prevent your progress. Maybe it is not very difficult when you start this step. I. AIDL Overview Meaning: AIDL (Android Interface Definition Language) is the android Interface Definition Language, which defines a standard and standard for communication interfaces between clien

1. The critical section can only be used for mutually exclusive access between objects in the same process. The mutex can be used for mutually exclusive access between object processes or threads.2. The critical section is a non-kernel object. The lock operation is performed only in the user State, and the speed is fast. The mutex is the kernel object. The lock operation is performed in the core state, which is slow.3. The critical section and mutex are available on the Windows platform. in Li

These two days to learn something a little more, feel completely coping but come, have been digesting these days to learn things so 2 ,3 ,4 of the study content did not summarize in a timely manner, In this expressed deep guilt, today to learn these days to summarize the knowledge points. The main study of IPC interprocess Communication, I understand the IPC mainly includes pipelines, shared memory, signal

communication means 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 interprocess communication. The former makes a systematic improvement and expansion of the inter-process communication means of UNIX, which forms the "system V IPC", and the communication process is confined to a single computer

Concurrent programming with a very popular Boost library is interesting. Boost has several libraries for concurrent programming: the Interprocess (IPC) library is used to implement shared memory, memory mapped I/O, and Message Queuing; The thread library is used to implement portable multithreading; Message passing Interface (MPI) Libraries are used for message passing in distributed computing; The Asio Library is used to implement portable networking

Article reprinted to CSDN community Luo Shenyang's Android tour, original address: http://blog.csdn.net/luoshengyang/article/details/6618363In Android, each application is made up of activity and service that are likely to run in the same process or run in different processes. So, how does the activity or service in the same process communicate? This is the binder interprocess communication mechanism to be described in this article.We know that the Android system is based on the Linux kernel, wh

Recently debugging an algorithm to see how the results change by changing the parameters of the algorithm. The trouble is that it takes 15 minutes to load and build data from disk. This is more annoying, that is, I have to wait 15 minutes before each parameter to start time?So I thought, could you open a datahost process that specifically loads the data. I debug parameters in another process, but I need data to load the ready-made data directly from the datahost process. So I just need to load t

I. Signal * * Int sigaction (SIGINT, act, 0); Act struct: struct sigaction Act; {act. sa_handler = ABC; sigemptyset ( act. sa_mask); Act. sa_flags = 0 ;} * Int kill (pid_t PID, int sig) unsigned int alarm (unsigned int seconds); pause () getppid () getpid () void Ding (ing sig) {} This is the signal registration function. Pid_t waitpid () fork () = 0 sub-process-1 failed system () Wait () parent wait Child -------------------------------------------------------- II. Inter-process communication

The previous two pieces of article explain the Android IPC through Aidl and Messenger two ways. This article is not about the third IPC, but the first two ways to encapsulate, so that we do not have to directly copy the Aidl file, Java files to the client, but to provide the client with an AAR (anroid Archive) package. By encapsulating the Aidl or messenger through this AAR package, the client can end up ca

Each process has a different user address space, the global variables of any one process can not be seen in another process, so the process to exchange data between the kernel, the kernel to open a buffer, process 1 data from the user space to the kernel buffer, process 2 and then read the data from the kernel buffer, This mechanism provided by the kernel is called interprocess communication (ipc,interprocess communication)As shown: There are seven wa

Altium Designer's PCB footprints are often seen in the same package, such as the IPC low density (lower density), IPC medium density (medium density), IPC high density (dense), such as TSSOP16, Why do you say that? IPC is the abbreviation for the American "Printed Circuit Board Association" ("the Institute of printed c

1. What is IPC communication? IPC (inter-process communication) communication that spans two different processes Generally, all components (such as activity and Service) in an android application are executed in the same process. This communication in the same process, also known as short-range communication, means that two activities are executed in the same process. Relatively: remote communication m

Run the "net share" command in Windows to view the sharing. In addition to the hidden sharing enabled by the system by default, there is also a hidden sharing named IPC $. 650) This. width = 650; "style =" border-bottom: 0px; border-left: 0px; border-top: 0px; border-Right: 0px; "Title =" image "border =" 0 "alt =" image "src =" http://img1.51cto.com/attachment/201411/1/70821_1414808901iJM5.png "Height =" 167 "/> This

Some old friends asked this question. I will post an article.Definition of IPC $: IPC $ is a resource that shares "named pipes" and is important for inter-program communication. Used to remotely manage computers and view shared resources of computers.IPC $: Using IPC $, we can establish an empty connection with the target host (without the user name and password)

SYS V IPC object: For a file object created in the kernel, which is the file identifier (which refers to all the information of a file object), the file descriptor in the process typically uses the currently smallest available value.For the IPC identifier returned is the integer value of the index, it is the serial number of the global variable, only assigned in the system, if the