[plt-scheme] File Locks

From: Andrey Skylar (skyarland at gmail.com)
Date: Wed Aug 10 17:55:33 EDT 2005

Does scheme's with-out-put-to-file and with-input-from-file functions
lock the files or in some other way prevent from two threads writing
at the same time or writing and reading at the same time?  If not, how
may I go about making sure it doesn't happen?


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