tight loop

(programming)A loop of code that executes without releasingany resources to other programs or the operating system.

Consider the following pointless BASIC loop that countsupward indefinitely

10 i = i + 120 GOTO 10

Run on a single-user system such as MS-DOS this will notcause any problems. Run on a cooperative multitaskingoperating system such as Windows 3, the system would appearto freeze.

A pre-emptive multitasking operating system such asUNIX or Windows NT would "steal" cycles away fromthe program and continue to run other programs.

See also busy-wait and multitasking.

单词	tight loop
释义	DictionarySeeinfinite loop tight loop tight loop (programming)A loop of code that executes without releasingany resources to other programs or the operating system. Consider the following pointless BASIC loop that countsupward indefinitely 10 i = i + 120 GOTO 10 Run on a single-user system such as MS-DOS this will notcause any problems. Run on a cooperative multitaskingoperating system such as Windows 3, the system would appearto freeze. A pre-emptive multitasking operating system such asUNIX or Windows NT would "steal" cycles away fromthe program and continue to run other programs. See also busy-wait and multitasking.
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