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Что (кто) такое shared-memory - определение

XShm; MIT SHM; MIT Shared Memory Extension

Shared memory

MEMORY THAT MAY BE SIMULTANEOUSLY ACCESSED BY MULTIPLE PROGRAMS WITH AN INTENT TO PROVIDE COMMUNICATION AMONG THEM OR AVOID REDUNDANT COPIES

Shared memory (interprocess communication); SHM (computer science); SHM (computing); Shared Memory; Universal Memory Architecture; Dev/shm; Shared memory programming; Shared Memory Architecture; Shared-memory architecture; Globally shared memory; Shared-memory; Shared-memory multiprocessor; Shared memory system; /dev/shm; Shared code; Shared data; Shared code segment; Shared data segment; Shared memory architecture

In computer science, shared memory is memory that may be simultaneously accessed by multiple programs with an intent to provide communication among them or avoid redundant copies. Shared memory is an efficient means of passing data between programs.

https://en.wikipedia.org/wiki/Shared_memory

shared memory

MEMORY THAT MAY BE SIMULTANEOUSLY ACCESSED BY MULTIPLE PROGRAMS WITH AN INTENT TO PROVIDE COMMUNICATION AMONG THEM OR AVOID REDUNDANT COPIES

Shared memory (interprocess communication); SHM (computer science); SHM (computing); Shared Memory; Universal Memory Architecture; Dev/shm; Shared memory programming; Shared Memory Architecture; Shared-memory architecture; Globally shared memory; Shared-memory; Shared-memory multiprocessor; Shared memory system; /dev/shm; Shared code; Shared data; Shared code segment; Shared data segment; Shared memory architecture

1. Memory in a parallel computer, usually RAM, which can be accessed by more than one processor, usually via a shared bus or network. It usually takes longer for a processor to access shared memory than to access its own private memory because of contention for the processor-to-memory connections and because of other overheads associated with ensuring synchronised access. Computers using shared memory usually have some kind of local cache on each processor to reduce the number of accesses to shared memory. This requires a {cache consistency} protocol to ensure that one processor's cached copy of a shared memory location is invalidated when another processor writes to that location. The alternative to shared memory is message passing where all memory is private to some particular processor and processors communicate by sending messages down special links. This is usually slower than shared memory but it avoids the problems of contention for memory and can be implemented more cheaply. 2. Memory which can be access by more than one process in a multitasking operating system with memory protection. Some Unix variants, e.g. SunOS provide this kind of shared memory. Unix manual pages: shmop(2), shmctl(2), shmget(2). (1994-10-20)

Shared universe

FICTIONAL UNIVERSE IN WHICH WORKS WRITTEN BY MULTIPLE WRITERS ARE SET

Shared world; Shared fictional universe; Combined universe; Shared Universe; List of shared universes; Cinematic universe; Shared uiniverse; Film universe; Television universe

A shared universe or shared world is a fictional universe from a set of creative works where more than one writer (or other artist) independently contributes a work that can stand alone but fits into the joint development of the storyline, characters, or world of the overall project. It is common in genres like science fiction.

https://en.wikipedia.org/wiki/Shared_universe

Википедия

MIT-SHM

The MIT Shared Memory Extension or MIT-SHM or XShm is an X Window System extension for exchange of image data between client and server using shared memory (usually /dev/shm). The mechanism only works when both pieces are on the same computer.

The basic capability provided is that of shared memory XImages. This is essentially a version of the ximage interface where the actual image data is stored in a SysV shared memory segment, and thus need not be transferred across the socket to the X server. For large images, use of this facility can result in some real performance increases.

Additionally, some implementations provide shared memory pixmaps. These are two-dimensional arrays of pixels in a format specified by the X server, where the image data is stored in the shared memory segment. Through use of shared memory pixmaps, it is possible to change the contents of these pixmaps without using any Xlib routines at all. Shared memory pixmaps can only be supported when the X server can use regular virtual memory for pixmap data; if the pixmaps are stored in the on-board memory of graphics hardware, an application will not be able to share them with the server.

In the 1.15 release of the X.org server the MIT-SHM extension gains two additional requests: 'X_ShmAttachFd' and 'X_ShmCreateSegment', to be able to pass shared memory through file descriptors from client to server and from server to client, reducing the number of copy operations further.

https://en.wikipedia.org/wiki/MIT-SHM

Примеры употребления для shared-memory

1. That, I guess, is what I am looking forward to tomorrow a shared memory of great occasions and great players that whichwill transcend the cruder tactics of the modern game.

2. "It is a shared memory site." More Infotech Headlines People who read this story also read Time Warner‘s AOL seeks technology, traffic 0'.12.05 Britons flock to online retail to avoid Xmas crush 0'.12.05 Yahoo undercuts Skype, telcos on voice call rates 08.12.05 Yahoo lets users answer each other’s questions 08.12.05 Microsoft, Google still vying for AOL linkup 07.12.05 Full Coverage Bihar Polls Save Bangalore SelectMumbai FloodsDay in PicsDiscovery in SpaceRam Temple TurmoilJustice for ImranaWimbledon 2005Advani‘s resignationBollywood icon: Sunil DuttSamrat Shah RukhOne Year of UPA RuleThe Great Indian DebateParveen Babi‘s DeathNRI NewsKanchi Seer‘s ArrestAmbani vs AmbaniGujarat RiotsJ–K MonitorIndia Pak TalksIndia–Aus SeriesIndia–Pak SeriesIslamabad SummitIndia Down UnderWar on IraqNE MonitorIndia–Pak Face OffPak Nuke LeakElections 2003 Del.icio.us provides a simple way for hundreds of thousands of Web users to share and categorize their favourite Web page bookmarks as Web pages.