Concurrency and Coordination Runtime (CCR) is an
asynchronous programming
Asynchrony, in computer programming, refers to the occurrence of events independent of the main program flow and ways to deal with such events. These may be "outside" events such as the arrival of signals, or actions instigated by a program that ...
library based on
.NET Framework
The .NET Framework (pronounced as "''dot net"'') is a proprietary software framework developed by Microsoft that runs primarily on Microsoft Windows. It was the predominant implementation of the Common Language Infrastructure (CLI) until bein ...
from
Microsoft
Microsoft Corporation is an American multinational corporation, multinational technology company, technology corporation producing Software, computer software, consumer electronics, personal computers, and related services headquartered at th ...
distributed with
Microsoft Robotics Developer Studio (MRDS). Even though it comes with MRDS, it is not limited to modelling robotic behavior but can be used to express asynchronous behavior in any application.
CCR runtime includes a
Dispatcher class that implements a Thread pool, with a fixed number of
threads
Thread may refer to:
Objects
* Thread (yarn), a kind of thin yarn used for sewing
** Thread (unit of measurement), a cotton yarn measure
* Screw thread, a helical ridge on a cylindrical fastener
Arts and entertainment
* ''Thread'' (film), 2016 ...
, all of which can execute simultaneously. Each dispatcher includes a queue (called
DispatcherQueue) of
delegate
Delegate or delegates may refer to:
* Delegate, New South Wales, a town in Australia
* Delegate (CLI), a computer programming technique
* Delegate (American politics), a representative in any of various political organizations
* Delegate (United S ...
s, which represent the entry point to a
procedure
Procedure may refer to:
* Medical procedure
* Instructions or recipes, a set of commands that show how to achieve some result, such as to prepare or make something
* Procedure (business), specifying parts of a business process
* Standard operat ...
(called ''work item'') that can be executed asynchronously. The work items are then distributed across the threads for execution. A dispatcher object also contains a
generic
Generic or generics may refer to:
In business
* Generic term, a common name used for a range or class of similar things not protected by trademark
* Generic brand, a brand for a product that does not have an associated brand or trademark, other ...
Port which is a queue where the result of the asynchronous execution of a work item is put. Each work item can be associated with a
ReceiverTask object which consumes the result for further processing. An
Arbiter manages the
ReceiverTask and invokes them when the result they are expecting is ready and put on the
Port queue.
In May 2010, the CCR was made available along with the entire Robotics Developer Studio in one package, for free. ''Microsoft Robotics Developer Studio 2008 R3.''
MSRDS 2008 R3 Release Notes (MSDN Library)
/ref>
CCR was last updated in RDS R4 in 2012. It is no longer under development. Asynchronous programming is now supported in Visual Studio languages such as C# through built-in language features.
See also
*Parallel Extensions
Parallel Extensions was the development name for a managed concurrency library developed by a collaboration between Microsoft Research and the CLR team at Microsoft. The library was released in version 4.0 of the .NET Framework. It is composed ...
*Joins Join may refer to:
* Join (law), to include additional counts or additional defendants on an indictment
*In mathematics:
** Join (mathematics), a least upper bound of sets orders in lattice theory
** Join (topology), an operation combining two topo ...
* Microsoft Robotics Developer Studio
References
External links
CCR: MSDN MagazineCCR: Channel9 InterviewCCR and DSS Toolkit 2008 homepageConcurrency and Coordination Runtime MSDN Documentation
{{.NET Framework
.NET software
Concurrent programming libraries
Robotics suites