You may encounter an error pointing to the Runtime Concurrency Coordination Guide. There are several ways to solve this problem, which we will talk about shortly.
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Presentation
Concurrency and Runtime Coordination (CCR) is an asynchronous messaging directory for the .NET platform that provides a specific set of powerful little primitives, most of which allow for a different approach to structuring capabilities. Effective use of CCR should enable the applicationbe slightly more responsive, larger, and most likely more reliable. The great thing about solving this problem is that it can bring impressive benefits at the same time, reducing (and sometimes eliminating) the need for your business, explicitly with threads (and surprises in those threads), locks, mutexes, and more. low-level synchronization primitives.
If your application is tiny, single-threaded, it allows you to be more responsive and make better use of the kernels available to you, while maintaining the conceptual simplicity of your original codebase. Alternatively, if your application is usually already multithreaded, CCR can match (and sometimes improve) your system’s throughput while simplifying your personal codebase.
- Simple and efficient messaging implementation. Extremely lightweight and safe programs connect objects in an actor-oriented view and connect the world.
- definition has simple scheduling constraints. Planning is undoubtedly It is the raison d’être of CCR. You create tasks and send messages to other parts of your process, and you use physical objects called arbiters to declare the limits under which someone can process the results, as well as incoming requests. CCR ensures that these restrictions are met before your code is executed.
- is a model of thinking about chess. CCR provides a causal relationship, in fact a means of propagating context through a series of the same asynchronous subtasks, so that in the event of a task failure (i.e., not looking at your thread that created it in l ‘origin.
- Better use of available (and future) canned energy. CCR works either through an existing thread pool or, if you prefer, its own custom implementation that provides better performance in some cases. However, the impact of this mechanism on your code is usually minimized.
- Easier integration of asynchronous I / O operations. The key to improving scalability and performance These individual processes are often concerned with improving the efficiency of I / O operations. Because these types of operations are usually slower than computational tasks, blocking I / O causes useful devices (in this case, threads) to be discovered, preventing them from being used for other pending tasks. By distributing I / O asynchronously, these applications can process other tasks until the operations are complete. However, asynchronous sequencing operations often separate the start of each operation from its completion, resulting in source code that is difficult to understand. CCR uses a new implementation of C # iterators to manage operations.
The
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By “asynchronous messaging” we mean that the accessories exchange data, sending data to each of them, and, in addition, the data and many subsequent responses do not have a guaranteed temporary connection. Often times, a sent message will be sent at some point in the future, and a response will most likely be received later.
Although purely in-process andThe use of CCR actually offers somewhat stricter guarantees, a process that is important for models that mainly involve interprocess computing, where the potential for error is often all over the place. This makes CCR primitives not only very useful for I / O at a reasonable level, but also as a building block for building scalable distributed systems.
Basics Of All CCR Types
CCR consists of a small number of generic types:
- tasks. Any part with (your) code to execute.
- Job queues. Or, to be precise, DispatcherQueues. Just a meaningful list of pending tasks. Threads following a Vanilla CLR thread pool, or possibly a CCR custom thread pool (also known as a dispatcher), are queued and perform these tasks.
- ports. These are in-process message lines that connect components. Basically, no more than a lot more linked lists, vendors put messages on ports. CCR provides generic overloads for type safety.
- Judge. These are all primitives CCR, providing communication between the port and the task. You define the conditions under which the deployment should be created, when the message is offered on the port, and what task line it receives. There are several arbiters that ship with CCR, and many of them can be grouped into top-level builds.
With these basic concepts out of the way, let’s look at a simple CCR discount code. First, let’s define a simple functional C # console that we will use for all of the web hosting provider examples. Note that in this process application we are using a custom CCR thread pool (dispatcher) and attaching our task to it. This means that tasks in the queue will run them on threads that belong to this custom pool.
static void Main ( string [] args) c (var dr = new dispatcher ()) c (var taskQueue = new DispatcherQueue ( "samples", dr) ) // Examples can be found here ... // You need a callstrong blocking to prevent the application from exiting
//.
Console.ReadLine ();
Although the examples provided here are the only correct execution on a single job queue, you can see that it is recommended to use multiple job queues. CCR will circulate between job queues created during job retrieval to prevent each individual job queue from being depleted by others.
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For the time being, let us only solve one direct classification problem. This is often the easiest way to start a routine in CCR, and we don’t even need a port. The Arbiter class also includes a number of such convenience methods. FromHandler () simply creates one task from each delegate – in this case, another anonymous one. It is then placed in a queue of personal tasks to be performed by each individual dispatcher.
It may not be that often to place tasks directlyactually in the queue; the port can usually be involved somewhere. In the next snippet, we will define a port, each arbiter, and then send a message to a specific port. In this case, we have a kind of typed String port and a handler signature that takes String.Color = “# 008000″> //
var = new port << span color = "# 0000ff"> string> (); Arbiter.Activate (taskQueue, port.Receive ( Console.WriteLine));port.Post ( "Hello (again) world");
There is always something going on here, and it’s worth understanding the process. The port.Receive () call creates the simplest arbiter, the “receiver,” which is almost certainly satisfied as soon as a single text message arrives on the port. On arrival is the best job
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