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ruby-changes:48119

From: akr <ko1@a...>
Date: Sat, 21 Oct 2017 15:45:46 +0900 (JST)
Subject: [ruby-changes:48119] akr:r60233 (trunk): [DOC] describe methods used for src and dst argument.

akr	2017-10-21 15:45:41 +0900 (Sat, 21 Oct 2017)

  New Revision: 60233

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60233

  Log:
    [DOC] describe methods used for src and dst argument.

  Modified files:
    trunk/io.c
Index: io.c
===================================================================
--- io.c	(revision 60232)
+++ io.c	(revision 60233)
@@ -11017,7 +11017,12 @@ copy_stream_finalize(VALUE arg) https://github.com/ruby/ruby/blob/trunk/io.c#L11017
  *     IO.copy_stream(src, dst, copy_length, src_offset)
  *
  *  IO.copy_stream copies <i>src</i> to <i>dst</i>.
- *  <i>src</i> and <i>dst</i> is either a filename or an IO.
+ *  <i>src</i> and <i>dst</i> is either a filename or an IO-like object.
+ *  IO-like object for <i>src</i> should have <code>readpartial</code> or
+ *  <code>read</code> method.
+ *  IO-like object for <i>dst</i> should have <code>write</code> method.
+ *  (Specialized mechanisms, such as sendfile system call, may be used
+ *  on appropriate situation.)
  *
  *  This method returns the number of bytes copied.
  *

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