Issue #4532 has been reported by Eric Wong.

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Feature #4532: [PATCH] add IO#pread and IO#pwrite methods
http://redmine.ruby-lang.org/issues/4532

Author: Eric Wong
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: 1.9.x


These methods are useful for safe/concurrent file I/O in
multi-thread/process environments and also fairly standard
nowadays especially in systems supporting pthreads.

pread() is already used internally for IO.copy_stream


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