Shared Memory

In computing, 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. Depending on context, programs may run on a single processor or on multiple separate processors. Using memory for communication inside a single program, for example among its multiple threads, is generally not referred to as shared memory.

Read more about Shared MemoryIn Hardware, In Software

Other articles related to "shared memory, memory":

Service-oriented Programming - Cross-cutting Concerns - Inter-service Communication
... In addition to the ability to call any service, Service Request Events and Shared Memory are two of the SOP built-in mechanisms provided for inter-service communication ... SOP also provides a shared memory space with access control where services can access and update a well-defined data structure that is similar to the input/output structure of services ... The shared memory mechanism within SOP can be programmatically accessed through service interfaces ...
Local Descriptor Table - History
... LDT per user process, describing privately held memory, while shared memory and kernel memory will be described by the GDT ... The LDT also cannot store certain privileged types of memory segments (e.g ... Creating shared memory through the GDT has some drawbacks ...
Local Procedure Call - Implementation
... For messages longer than 256 bytes a shared memory section must be used to transfer data, which the (A)LPC service maps between the sending and receiving processes ... First the sender places data into the shared memory, and then sends a notification (e.g ... process pointing to the sent data in the shared memory section ...
ABA Problem
... occurs when multiple threads (or processes) accessing shared memory interleave ... is the sequence of events that will result in the ABA problem Process reads value A from shared memory, is preempted, allowing process to run, modifies ... behavior will not be correct due to the "hidden" modification in shared memory ...
Shared Memory - In Software - Support On Other Platforms
... On Windows the function CreateSharedMemory can be used to create a shared memory ... functons Some C++ libraries provide a portable and object-oriented access to shared memory functionality ... There is native support for shared memory also in programming languages besides C/C++ ...

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