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WSL lets Linux ELF binaries run on Windows through a managed Virtual Machine. Cygwin provides a full POSIX environment (as a windows DLL) in which applications, compiled as Windows EXEs, run as they would under Unix. [7] Instead of providing a full environment like Cygwin does, MSYS2 tasks itself with being a development and deployment platform ...
The name LLVM originally stood for Low Level Virtual Machine, though the project has expanded and the name is no longer officially an initialism. LLVM is written in C++ and is designed for compile-time, link-time, runtime, and "idle-time" optimization.
Application virtualization is a software technology that encapsulates computer programs from the underlying operating system on which they are executed. A fully virtualized application is not installed in the traditional sense, [1] although it is still executed as if it were.
The runtime system of the C language is a particular set of instructions inserted by the compiler into the executable image. Among other things, these instructions manage the process stack, create space for local variables, and copy function call parameters onto the top of the stack.
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. [1]
Therefore, a runtime library is always specific to the platform and compiler. The runtime library may implement a portion of the runtime environment's behavior, but if one reads the code of the calls available, they are typically only thin wrappers that simply package information, and send it to the runtime environment or operating system.
Process virtual machines are designed to execute computer programs in a platform-independent environment. Some virtual machine emulators, such as QEMU and video game console emulators , are designed to also emulate (or "virtually imitate") different system architectures, thus allowing execution of software applications and operating systems ...
Bell Labs started the development and expansion of C based on B and BCPL. The BCPL compiler had been transported to Multics by Bell Labs and BCPL was a preferred language at Bell Labs. [38] Initially, a front-end program to Bell Labs' B compiler was used while a C compiler was developed.