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EXE$ - Operating System Interface

Overview

VX/EXE$ provides a call-compatible implementation of OpenVMS process execution and image management APIs for x86 and ARM Linux. It enables OpenVMS applications to manage process control, file handling, and execution workflows while maintaining compatibility with existing OpenVMS logic.

Key Features

• Fully compatible with OpenVMS EXE$ APIs.

• Supports process execution, file management, data retrieval, and system interactions.

• Allows seamless migration of OpenVMS applications that rely on EXE$ routines.

• Integrates with VX/RT to provide full OpenVMS execution and image management capabilities on x86 and ARM Linux.

• Maintains OpenVMS process control semantics to ensure consistent behavior on Linux.

VX/EXE$ Callable Routines

EXE$ API Function
EXE$ASCTIMConverts binary time to ASCII format
EXE$CANCELCancels an outstanding I/O request
EXE$CLOSECloses a file or device connection
EXE$CONNECTEstablishes a connection between processes or files
EXE$COPYCopies data between files or devices
EXE$CREATECreates a new file or process
EXE$DELETEDeletes a specified file or record
EXE$DISCONNECTTerminates a process connection
EXE$DISPLAYOutputs formatted data to the display
EXE$ERASEClears data from a file or screen
EXE$FLUSHFlushes buffered data to disk or device
EXE$FREEReleases allocated resources
EXE$GETRetrieves data from a file or input device
EXE$GETQUIRetrieves queue information synchronously
EXE$GETQUIWRetrieves queue information asynchronously
EXE$GETTIMRetrieves the current system time
EXE$OPENOpens a file or device for access
EXE$PUTWrites data to a file or output device
EXE$QIOQueues an I/O operation
EXE$READReads data from a file or device
EXE$RELEASEReleases resources held by a process
EXE$RENAMERenames a file or resource
EXE$REWINDMoves the file pointer to the beginning
EXE$SEARCHSearches for a pattern in a file or dataset
EXE$SYNCHSynchronizes process execution
EXE$TRUNCATETrims a file to a specified size
EXE$UPDATEModifies an existing file or resource
EXE$WRITEWrites data to an output device or file

Why Use VX/EXE$?

Preserves OpenVMS execution logic, enabling direct porting of applications.

Provides full compatibility with OpenVMS EXE$ process and file management functions.

Supports critical OpenVMS execution workflows, including process connections, file operations, and resource management.

Seamlessly integrates into the VX/RT ecosystem for OpenVMS compatibility on x86 and ARM Linux.

VX/EXE$ ensures that OpenVMS applications requiring EXE$ services can be migrated without major modifications, preserving productivity and minimizing development costs.

Frequently Asked Questions

Curious about how Sector7 can facilitate your application migration? Explore our FAQs for expert insights.

What is VX/EXE$ and how does it help with OpenVMS migration?

VX/EXE$ provides a call-compatible implementation of OpenVMS process execution and image management APIs for x86 and ARM Linux. It enables seamless migration of OpenVMS applications that rely on EXE$ routines for process control, file handling, and execution workflows while maintaining compatibility with existing OpenVMS logic.

Organizations can migrate critical applications without major modifications, preserving productivity and minimizing development costs. Contact us to discuss your OpenVMS migration requirements.

Which OpenVMS EXE$ APIs does VX/EXE$ support?

VX/EXE$ supports comprehensive OpenVMS EXE$ APIs including process execution, file management, data retrieval, and system interactions such as EXE$CREATE, EXE$DELETE, EXE$QIO, EXE$READ, EXE$WRITE, and EXE$GETTIM.

Does VX/EXE$ maintain OpenVMS process control semantics on Linux?

Yes, VX/EXE$ maintains OpenVMS process control semantics to ensure consistent behavior on Linux, preserving the original application logic and execution workflows.

What process execution capabilities are available in VX/EXE$?

VX/EXE$ supports process connections, synchronization, resource management, queue operations, and time management functions including EXE$CONNECT, EXE$SYNCH, EXE$GETQUI, and EXE$ASCTIM.

How does VX/EXE$ handle file operations and data management?

VX/EXE$ provides comprehensive file management through APIs like EXE$OPEN, EXE$CLOSE, EXE$COPY, EXE$RENAME, EXE$TRUNCATE, and EXE$UPDATE. These functions enable applications to perform complete file lifecycle operations while maintaining OpenVMS compatibility.

Organizations like Telstra have successfully migrated complex file management systems using similar OpenVMS compatibility tools.

How does VX/EXE$ integrate with the VX/RT ecosystem?

VX/EXE$ seamlessly integrates with VX/RT to provide full OpenVMS execution and image management capabilities on x86 and ARM Linux platforms.

What are the key migration benefits of using VX/EXE$?

VX/EXE$ preserves OpenVMS execution logic, provides full compatibility with process and file management functions, supports critical execution workflows, and enables direct porting without major application modifications.

What results can organizations expect when implementing VX/EXE$?

Organizations implementing VX/EXE$ achieve seamless OpenVMS application migration with preserved functionality and reduced development costs. The tool ensures applications requiring EXE$ services migrate without major modifications while maintaining productivity.

Companies like Allianz have successfully modernized their OpenVMS systems using comprehensive migration approaches. VX/EXE$ eliminates vendor lock-in and enables organizations to leverage modern Linux infrastructure while preserving critical business logic.

To explore how VX/EXE$ can support your migration project, contact us for a consultation.

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