Distributed Ruby Program On Windows

Implementation and application of distributed Ruby and its parallel coordination mechanism($Revision: 1. Date: 2. 00. 8/0. In the last few years, the Ruby on Rails web application framework, popular for its productivity benefits, has brought about a renewed attention to Ruby from the enterprise.

Implementation and application of distributed Ruby and its parallel coordination mechanism

As the focus of Ruby has broadened from small tools and scripts, to large applications, the demands on Ruby's distributed object environment have also increased, as has the need for information about its usage, performances and examples of common practices. An English translation of the author's Japanese d. Ruby book is currently being planned by the Pragmatic Bookshelf.

Ruby and Rinda were developed by the author as the distributed object environment and shared tuplespace implementation for the Ruby language, and are included as part of Ruby's standard library. Rinda builds on d.

Ruby to bring the functionality of Linda, the glue language for distributed co- ordination systems, to Ruby. This article discusses the design policy and implementation points of these two systems, and demonstrates their simplicity with sample code and examples of their usage in actual applications. In addition to d. Ruby and Rinda's appropriateness for sketching out distributed systems, this article will also demonstrate that d. Ruby and Rinda are building a reputation for being suitable as components of the infrastructure for real- world applications. Introduction. This article aims at giving you details on d. Ruby and Rinda. Rinda is a coordination mechanism running on d.

Ruby. First, I would like to introduce Ruby. Ruby is an object- oriented scripting language created by Yukihiro Matsumoto. Until recently, Ruby's popularity was limited to a small community of early- adopter programmers. Ruby is now rapidly gathering attention amongst business users for its potential productivity gains. Ruby has the following characteristics; Standard object- oriented features, such as classes and methods. Everything is an object.

Untyped variables. Easy- to- use libraries. Simple, easy- to- learn syntax.

4 Windows or Linux Virtual Machines. Gain insights into your Microsoft Azure resource consumption Discover how the Billing APIs. Ruby is an open source, it can be freely distributed and modified. It can be used for writing web applications or GUI. Ruby is portable, so the resulting program can be run on many platforms. Windows: Problem Solutions. Ruby Programming; Previous Page: Home.

1. I would create an exe file for a program written in. You assume that the only way to run a Ruby program on Windows is to bundle it up with a 1. Because Windows software is > almost exclusively distributed in.
2. If I > want to share a program Ive created with a friend that doesnt have > Ruby installed, what files do I have to send along with my program.

Garbage collector. Rich reflection functionality.

User level thread. Ruby is so- called, categorized as a dynamic object- oriented language.

Everything is composed of objects, and there is no type of variables. Unification of methods is all made at execution time. Furthermore, Ruby has rich reflection functionality and allows to use metaprogramming. Ruby is a mysterious language, as if the creator made tricks on Ruby. We do programming as Ruby leads us, and without notice we feel like almost touching on the essence of object- oriented programming. Ruby is a distributed object environment for making Ruby running on it. Another is that Rinda incorporates Linda’s implementations within itself; Linda is a glue language of a distributed coordination system based on d.

Ruby, so it provides common tuple spaces. This article introduces not only d. Ruby’s concept and its design policy but also its implementations and practical usage. This article will be discussed as follows. Ruby - d. Ruby's overview and its design policy.

Implementation – d. Ruby's implementations. Performance - Overhead in using d. Ruby. Application - A real system executing d. Ruby, Rinda's overview and a real system executing Rinda .

Stupid Easy, Reasonably Fast. Kinda Flaky, Zero Redundancy, Tightly Coupled.

His points were an apt assessment. In this chapter, I describe the design policy and characteristics of d.

Ruby. I did not aim for d. Ruby to be just another conventional distributed object system for Ruby. Rather, I intended to extend Ruby method calls to other processes and other machines. As a result, d. Ruby extends the Ruby interpreter across other processes and other machines, both in a physical sense and a temporal sense. Ruby has the following characteristics.

Easy to set- up Easy to learn Automatic selection of object transmission strategy (pass by value or pass by reference) reasonably fast no distinction between server and clientd. Ruby is a distributed object system exclusively for Ruby.

The platforms which d. Ruby runs are able to exchange objects and also call methods on each other objects.

Thanks to Ruby's excellent thread, socket and marshalling class libraries, the initial version of d. Ruby was implemented in just 2. Compatibility with Rubyd. Ruby pays special attention to maintaining compatibility with Ruby scripts. Ruby programmers should find d. Ruby to be a comfortable, seamless extension of Ruby. Programmers accustomed to other conventional distributed object systems, however, may find d.

Ruby to be a little strange. Variables in Ruby are not typed, and assignment is not restricted by inheritance hierarchies. Unlike languages with statically checked variables, such as Java, objects are not checked for correctness before execution, and method look- up is only conducted at execution time (when methods are called). This is an important characteristic of the Ruby language.

Ruby operates in the same fashion. In d. Ruby, client stubs (the DRb. Object, also called the . There is no need for a listing of exposed methods or inheritance information to be known in advance.

Thus, there is no need to define an interface (e. Consequently, much of unique benefits of Ruby are available for the programmer to enjoy. For example, methods called with blocks (originally called iterators) and exceptions can be handled as if they were local. Mutex, queues and other thread synchronization mechanisms can also be used for inter- process synchronization without any special consideration.

Passing Objects. Concepts that didn't originally exist in Ruby were introduced in d. Ruby as naturally as possible. Object transmission is a good example. When methods are called, objects such as the method arguments, return values and exceptions are transmitted. Method arguments are transmitted from client to server, while exceptions and return values are transmitted from server to client. In this article, I will refer to both of these types of object transmission as object exchange. Assignment (or binding) to variables in Ruby is always by reference.

Clones of objects are never assigned. It is, however, different in d. Ruby. In the world of distributed objects, distinguishing between . This is true also of d. Ruby. While a computing model where references are continually exchanged forever (or until they become nil) is conceivable, in reality applications will, at some point, need .

In d. Ruby, programmers do not need to explicitly specify whether to use pass- by- value or pass- by- reference. Instead, the system automatically decides which to use. This decision is made using a simple rule - - serializable objects are passed by value, while unserializable objects are passed by reference. Although this rule may not always be correct, in most situations it will work. Here, I would like to briefly discuss this rule. Firstly, note that it is impossible for objects that cannot be serialized to be passed by value. The problematic case is where a serializable object that is more appropriately passed by reference is instead passed by value.

To handle this case, d. Ruby provides a mechanism whereby serializable objects can be explicitly marked to be passed by reference.

An example will be discussed later in this article. By automatically choosing the means of object transmission, d. Ruby minimizes the amount of code that needs to be written to handle object transmission. Ruby's lack of a need for interface definition (e.

IDL) and declaration of object transmission style, are not the only ways that d. Ruby differs from other distributed object systems. This is because d.

Ruby aims to be a . Unsupported things. Finally, I shall introduce some of the features that d. Ruby does not support, namely garbage collection and security.

Ruby does not implement distributed garbage collection because I have not found a solution that is both cheap and realistic. Currently, it is the responsibility of the application to prevent exported objects from being garbage collected. The option to protect objects from garbage collection using a ping mechanism has been provided, however, there is a risk that circular references will give rise to objects that never get garbage collected. Possible solutions to this problem, including the modification of the Ruby interpreter, are currently being explored. Ruby currently does not provide any mechanisms for security. At most, d. Ruby imposes the same restrictions on method visibility as Ruby does, but is helpless against malicious attacks.

It is, however, possible to use SSL to secure network communications. In this chapter, I described d. Ruby design policy. To summarize, d. Ruby does extend Ruby's method calls as it is, so d.

Ruby is not just a standard Ruby- like interface of RMI. In fact, some use http as interface for external network and where d.

Ruby is incorporated in their internal systems at the backend. Implementation. In this chapter, I discuss some interesting features of d. Ruby and its implementation. Using code from the initial version of d. Ruby and other sample code, I will describe in detail how basic RMI is and the mechanism of object transmission. Basic RMIFirst, I shall explain the implementation of basic method calling using the actual code.

An Example: The producer- consumer problem. The following code is a typical implementation the producer- consumer problem using a shared queue. Next, a Sized. Queue object (2) with a limited number of buffer elements is instantiated. Then the DRb services is started (3). In this case, the Sized.

Queue object is made public at the URI . The object is called as a front object. Finally, the service is stopped, without exiting, by calling sleep(4).

Even though the main thread is stopped, the service continues to be available as it continues to run on threads in the background. Note that applications that never export an object do not need to call DRb. DRb. Objects are proxies referencing remote objects.