Browse Definitions:
Definition

routine

Contributor(s): Selena Ozuna

In computer programming, routine and subroutine are general and nearly synonymous terms for any sequence of code that is intended to be called and used repeatedly during the executable of a program. This makes the program shorter and easier to write (and also to read when necessary). The main sequence of logic in a program can branch off to a common routine when necessary. When finished, the routine branches back to the next sequential instruction following the instruction that branched to it. A routine may also be useful in more than one program and save other programmers from having to write code than can be shared.

Typically, in assembler languages, a routine that requires some variable input can be encoded into a macro definition with a specified interface called a macro instruction . The programmer can then use a macro instruction instead of having to include and manage the branching to a routine. Macro definitions and instructions also tend to be shared among programmers for use in multiple programs, especially in software development projects.

In higher-level computer languages, many commonly-needed routines are prepackaged as function , which are routines with specified programming interfaces. Some functions can be compiled in line with other code. Other functions are compiled in as stub that make dynamic calls for system services during program execution. Functions are sometimes called library routines . The compiler and a set of library routines usually come as part of a related software development package.

In Windows and some other personal computer operating systems, the system routines for handling specific tasks such as interacting with specific I/O devices are called dynamic link library ( dynamic link library ) routines. These routines are dynamic because their files are not actually loaded into memory until the first time they are called.

A more recent term, procedure , is similar in meaning.

This was last updated in April 2005

Join the conversation

1 comment

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

i like d way of explation
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

SearchSecurity

  • password

    A password is an unspaced sequence of characters used to determine that a computer user requesting access to a computer system is...

  • adware

    Adware is any software application in which advertising banners are displayed while a program is running.

  • botnet

    A botnet is a collection of internet-connected devices, which may include PCs, servers, mobile devices and internet of things ...

SearchHealthIT

SearchDisasterRecovery

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

  • mass notification system (MNS)

    A mass notification system is a platform that sends one-way messages to inform employees and the public of an emergency.

  • disaster recovery as a service (DRaaS)

    One approach to a strong disaster recovery plan is DRaaS, where companies offload data replication and restoration ...

SearchStorage

  • data migration

    Data migration is the process of transferring data between data storage systems, data formats or computer systems.

  • compact disc (CD)

    A compact disc is a portable storage medium that can be used for recording, storing and playing back audio, video and other data ...

  • secondary storage

    Secondary storage is used to protect inactive data written from a primary storage array to a nonvolatile tier of disk, flash or ...

SearchSolidStateStorage

  • SSD RAID (solid-state drive RAID)

    SSD RAID (solid-state drive RAID) is a methodology commonly used to protect data by distributing redundant data blocks across ...

  • Tier 0

    Tier 0 (tier zero) is a level of data storage that is faster, and perhaps more expensive, than any other level in the storage ...

  • PCIe SSD (PCIe solid-state drive)

    A PCIe SSD (PCIe solid-state drive) is a high-speed expansion card that attaches a computer to its peripherals.

SearchCloudStorage

  • RESTful API

    A RESTful application program interface breaks down a transaction to create a series of small modules, each of which addresses an...

  • cloud storage infrastructure

    Cloud storage infrastructure is the hardware and software framework that supports the computing requirements of a private or ...

  • Zadara VPSA and ZIOS

    Zadara Storage provides block, file or object storage with varying levels of compute and capacity through its ZIOS and VPSA ...

Close