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Comparison Of Application Virtual Machines
Application virtualization software refers to both application virtual machines and software responsible for implementing them. Application virtual machines are typically used to allow application bytecode to run portably on many different computer architectures and operating systems. The application is usually run on the computer using an interpreter or just-in-time compilation (JIT). There are often several implementations of a given virtual machine, each covering a different set of functions. Comparison of virtual machines :JavaScript machines not included. See List of ECMAScript engines to find them. The table here summarizes elements for which the virtual machine designs are intended to be efficient, not the list of abilities present in any implementation. Virtual machine instructions process data in local variables using a main ''model of computation'', typically that of a stack machine, register machine, or random access machine often called the memory machine. Use of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Machine
In computing, a virtual machine (VM) is the virtualization/ emulation of a computer system. Virtual machines are based on computer architectures and provide functionality of a physical computer. Their implementations may involve specialized hardware, software, or a combination. Virtual machines differ and are organized by their function, shown here: * '' System virtual machines'' (also termed full virtualization VMs) provide a substitute for a real machine. They provide functionality needed to execute entire operating systems. A hypervisor uses native execution to share and manage hardware, allowing for multiple environments which are isolated from one another, yet exist on the same physical machine. Modern hypervisors use hardware-assisted virtualization, virtualization-specific hardware, primarily from the host CPUs. * Process virtual machines are designed to execute computer programs in a platform-independent environment. Some virtual machine emulators, such as QEMU a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Language Runtime
The Common Language Runtime (CLR), the virtual machine component of Microsoft .NET Framework, manages the execution of .NET programs. Just-in-time compilation converts the managed code (compiled intermediate language code) into machine instructions which are then executed on the CPU of the computer. The CLR provides additional services including memory management, type safety, exception handling, garbage collection, security and thread management. All programs written for the .NET Framework, regardless of programming language, are executed in the CLR. All versions of the .NET Framework include CLR. The CLR team was started June 13, 1998. CLR implements the Virtual Execution System (VES) as defined in the Common Language Infrastructure (CLI) standard, initially developed by Microsoft itself. A public standard defines the Common Language Infrastructure specification. With Microsoft's move to .NET Core, the CLI VES implementation is known as CoreCLR instead of CLR. See ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BEAM (Erlang Virtual Machine)
BEAM is the virtual machine at the core of the Erlang Open Telecom Platform (OTP). BEAM is part of the Erlang Run-Time System (ERTS), which compiles Erlang source code into bytecode, which is then executed on the BEAM. BEAM bytecode files have the .beam file extension. Originally BEAM was short for ''Bogdan's Erlang Abstract Machine'', named after Bogumil "Bogdan" Hausman, who wrote the original version, but the name may also be referred to as ''Björn's Erlang Abstract Machine'', after Björn Gustavsson, who wrote and maintains the current version. Both developers worked on the system while at Ericsson. The predecessor of the BEAM was JAM (Joe's Abstract Machine), which was the first virtual machine for the Erlang language and was written by Joe Armstrong. See also * Comparison of application virtual machines * Register machine In mathematical logic and theoretical computer science a register machine is a generic class of abstract machines used in a manner similar to a Tu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squeak
Squeak is an object-oriented, class-based, and reflective programming language. It was derived from Smalltalk-80 by a group that included some of Smalltalk-80's original developers, initially at Apple Computer, then at Walt Disney Imagineering, where it was intended for use in internal Disney projects. The group would later go on to be supported by HP labs, SAP, and most recently, Y Combinator. Squeak runs on a virtual machine (VM), allowing for a high degree of portability. The Squeak system includes code for generating a new version of the VM on which it runs, along with a VM simulator written in Squeak. Developers Dan Ingalls, an important contributor to the Squeak project, wrote the paper upon which Squeak is built, and constructed the architecture for five generations of the Smalltalk language. Alan Kay is an important contributor to the Squeak project, and Squeak incorporates many elements of his proposed Dynabook concept. User interface frameworks Squeak includes fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dalvik Virtual Machine
Dalvik is a discontinued process virtual machine (VM) in the Android operating system that executes applications written for Android. (Dalvik bytecode format is still used as a distribution format, but no longer at runtime in newer Android versions.) Dalvik was an integral part of the Android software stack in the (now unsupported) Android versions 4.4 "KitKat" and earlier, which were commonly used on mobile devices such as mobile phones and tablet computers, and more in some devices such as smart TVs and wearables. Dalvik is open-source software, originally written by Dan Bornstein, who named it after the fishing village of Dalvík in Eyjafjörður, Iceland. Programs for Android are commonly written in Java and compiled to bytecode for the Java Virtual Machine, which is then translated to Dalvik bytecode and stored in .dex (''Dalvik EXecutable'') and .odex (''Optimized Dalvik EXecutable'') files; related terms ''odex'' and ''de-odex'' are associated with respective bytecode c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parrot Virtual Machine
Parrot was a register-based process virtual machine designed to run dynamic languages efficiently. It is possible to compile Parrot assembly language and Parrot intermediate representation (PIR, an intermediate language) to Parrot bytecode and execute it. Parrot is free and open source software. Parrot was started by the Perl community and is developed with help from the open source and free software communities. As a result, it is focused on license compatibility with Perl ( Artistic License 2.0), platform compatibility across a broad array of systems, processor architecture compatibility across most modern processors, speed of execution, small size (around 700k depending on platform), and the flexibility to handle the varying demands made by Raku and other modern dynamic languages. Version 1.0, with a stable application programming interface (API) for development, was released on March 17, 2009. The last version is release 8.1.0 "Andean Parakeet". Parrot was officiall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mono (software)
Mono is a free and open-source .NET Framework-compatible software framework. Originally by Ximian, it was later acquired by Novell, and is now being led by Xamarin, a subsidiary of Microsoft and the .NET Foundation. Mono can be run on many software systems. History When Microsoft first announced their .NET Framework in June 2000 it was described as "a new platform based on Internet standards", and in December of that year the underlying Common Language Infrastructure was published as an open standard, "ECMA-335", opening up the potential for independent implementations. Miguel de Icaza of Ximian believed that .NET had the potential to increase programmer productivity and began investigating whether a Linux version was feasible. Recognizing that their small team could not expect to build and support a full product, they launched the Mono open-source project, on July 19, 2001 at the O'Reilly conference. After three years of development, Mono 1.0 was released on June 30, 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LLVM
LLVM is a set of compiler and toolchain technologies that can be used to develop a front end for any programming language and a back end for any instruction set architecture. LLVM is designed around a language-independent intermediate representation (IR) that serves as a portable, high-level assembly language that can be optimized with a variety of transformations over multiple passes. LLVM is written in C++ and is designed for compile-time, link-time, run-time, and "idle-time" optimization. Originally implemented for C and C++, the language-agnostic design of LLVM has since spawned a wide variety of front ends: languages with compilers that use LLVM (or which do not directly use LLVM but can generate compiled programs as LLVM IR) include ActionScript, Ada, C#, Common Lisp, PicoLisp, Crystal, CUDA, D, Delphi, Dylan, Forth, Fortran, Free Basic, Free Pascal, Graphical G, Halide, Haskell, Java bytecode, Julia, Kotlin, Lua, Objective-C, OpenCL, PostgreSQL ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Virtual Machine
A Java virtual machine (JVM) is a virtual machine that enables a computer to run Java programs as well as programs written in other languages that are also compiled to Java bytecode. The JVM is detailed by a specification that formally describes what is required in a JVM implementation. Having a specification ensures interoperability of Java programs across different implementations so that program authors using the Java Development Kit (JDK) need not worry about idiosyncrasies of the underlying hardware platform. The JVM reference implementation is developed by the OpenJDK project as open source code and includes a JIT compiler called HotSpot. The commercially supported Java releases available from Oracle are based on the OpenJDK runtime. Eclipse OpenJ9 is another open source JVM for OpenJDK. JVM specification The Java virtual machine is an abstract (virtual) computer defined by a specification. It is a part of java runtime environment. The garbage-collection algorith ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portable
Portable may refer to: General * Portable building, a manufactured structure that is built off site and moved in upon completion of site and utility work * Portable classroom, a temporary building installed on the grounds of a school to provide additional classroom space where there is a shortage of capacity * Portable toilet, a modern, portable, self-contained outhouse manufactured of molded plastic Computing * Portable object (computing), a distributed computing term for an object which can be accessed through a normal method call while possibly residing in memory on another computer * Software portability, software that can easily be ported to multiple platforms * Portable applications, applications that do not require any kind of installation onto a computer, and can store data in the program's directory Electronics * Portable electronics * Portable device, a wearable or handheld device * Portable audio player, a personal electronic device that allows the user to listen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DotGNU
DotGNU is a decommissioned part of the GNU Project that started in January 2001. DotGNU aims to provide a free software replacement for Microsoft's .NET Framework by Free Software Foundation. Other goals of the project are better support for non-Windows platforms and support for more processors. The main goal of the DotGNU project code base was to provide a class library that is 100% Common Language Specification (CLS) compliant. Main development projects Portable.NET DotGNU Portable.NET, an implementation of the ECMA-335 Common Language Infrastructure (CLI), includes software to compile and run Visual Basic .NET, C#, and C applications that use the .NET base class libraries, XML, and Windows Forms. Portable.NET claims to support various instruction set architectures including x86, PPC, ARM, and SPARC. DGEE DotGNU Execution Environment (DGEE) is a web service server. libJIT The libJIT just-in-time compilation library is a library for development of advanced just-in-tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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