실행부 개체들 (Excutive Objects)

(출처 : Windows internals)
Each Windows environment subsystem projects to its applications a different image of the operating system. The executive objects and object services are primitives that the environment subsystems use to construct their own versions of objects and other resources.

Executive objects are typically created either by an environment subsystem on behalf of a user application or by various components of the operating system as part of their normal operation. For example, to create a file, a Windows application calls the Windows CreateFile function, implemented in the Windows subsystem DLL Kernel32.dll. After some validation and initialization, CreateFile in turn calls the native Windows service NtCreateFile to create an executive file object.

The set of objects an environment subsystem supplies to its applications might be larger or smaller than the set the executive provides. The Windows subsystem uses executive objects to export its own set of objects, many of which correspond directly to executive objects. For example, the Windows mutexes and semaphores are directly based on executive objects (which are in turn based on corresponding kernel objects). In addition, the Windows subsystem supplies named pipes and mailslots, resources that are based on executive file objects. Some subsystems, such as POSIX, don't support objects as objects at all. The POSIX subsystem uses executive objects and services as the basis for presenting POSIX-style processes, pipes, and other resources to its applications.