usa	2011-11-08 14:52:32 +0900 (Tue, 08 Nov 2011)

  New Revision: 33667

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=33667

  Log:
    * io.c (io_fwrite): call rb_w32_write_console() only if FMODE_TTY is
      set.  this is the one of the reason of IO writing slowness of Windows
      in 1.9.3 or later.

  Modified files:
    trunk/ChangeLog
    trunk/io.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 33666)
+++ ChangeLog	(revision 33667)
@@ -1,3 +1,9 @@
+Tue Nov  8 14:50:55 2011  NAKAMURA Usaku  <usa@r...>
+
+	* io.c (io_fwrite): call rb_w32_write_console() only if FMODE_TTY is
+	  set.  this is the one of the reason of IO writing slowness of Windows
+	  in 1.9.3 or later.
+
 Tue Nov  8 11:01:04 2011  NARUSE, Yui  <naruse@r...>
 
 	* ext/pty/pty.c (get_device_once): FreeBSD's posix_openpt doesn't
Index: io.c
===================================================================
--- io.c	(revision 33666)
+++ io.c	(revision 33667)
@@ -1085,8 +1085,10 @@
 io_fwrite(VALUE str, rb_io_t *fptr, int nosync)
 {
 #ifdef _WIN32
-    long len = rb_w32_write_console(str, fptr->fd);
-    if (len > 0) return len;
+    if (fptr->mode & FMODE_TTY) {
+	long len = rb_w32_write_console(str, fptr->fd);
+	if (len > 0) return len;
+    }
 #endif
     str = do_writeconv(str, fptr);
     return io_binwrite(str, RSTRING_PTR(str), RSTRING_LEN(str),

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