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De - Pt| English Dictionary: reentrant | by the DICT Development Group |
| 2 results for reentrant | |
| From WordNet (r) 3.0 (2006) [wn]: | |
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| From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
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re-entrant simultaneous, interleaved, or nested invocations which will not interfere with each other. This is important for {parallel processing}, {recursive} functions or subroutines, and {interrupt handling}. It is usually easy to arrange for multiple invocations (e.g. calls to a subroutine) to share one copy of the code and any read-only data but, for the code to be re-entrant, each invocation must use its own copy of any modifiable data (or synchronised access to shared data). This is most often achieved using a {stack} and allocating local variables in a new {stack frame} for each invocation. Alternatively, the caller may pass in a pointer to a block of memory which that invocation can use (usually for outputting the result) or the code may allocate some memory on a {heap}, especially if the data must survive after the routine returns. Re-entrant code is often found in system software, such as {operating systems} and {teleprocessing monitors}. It is also a crucial component of {multithreaded} programs where the term "thread-safe" is often used instead of "re-entrant". (1996-12-21) | |
