Free On-line Dictionary of Computing

tight loop

<programming >

A loop of code that executes without releasing any resources to other programs or the operating system. Consider the following pointless BASIC loop that counts upward indefinitely

 10 i = i + 1
 20 GOTO 10
Run on a single-user system such as MS-DOS this will not cause any problems. Run on a cooperative multitasking operating system such as Windows 3, the system would appear to freeze. A pre-emptive multitasking operating system such as UNIX or Windows NT would "steal" cycles away from the program and continue to run other programs. See also busy-wait and multitasking.

Last updated: 1999年05月06日

Nearby terms:

TIFFtiger teamtight loop tildeTILE ForthTim Berners-Lee

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