[Bug libfortran/50016] [4.7 Regression] Drastic I/O performance regression on Windows

["jb at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50016

--- Comment #19 from Janne Blomqvist <jb at gcc dot gnu.org> 2011-11-09 15:46:20 UTC ---
Author: jb
Date: Wed Nov  9 15:46:15 2011
New Revision: 181207

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181207
Log:
PR 50016 Slow I/O on MingW due to _commit

frontend ChangeLog:

2011-11-09  Janne Blomqvist  <jb@gcc.gnu.org>

    PR libfortran/50016
    * gfortran.texi (Data consistency and durability): New section.


testsuite ChangeLog:

2011-11-09  Janne Blomqvist  <jb@gcc.gnu.org>

    PR libfortran/50016
    * gfortran.dg/inquire_size.f90: Don't flush the unit.

libgfortran ChangeLog:

2011-11-09  Janne Blomqvist  <jb@gcc.gnu.org>

    PR libfortran/50016
    * io/inquire.c (inquire_via_unit): Flush the unit and use ssize.
    * io/unix.c (buf_flush): Don't call _commit.


Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/gfortran.texi
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gfortran.dg/inquire_size.f90
    trunk/libgfortran/ChangeLog
    trunk/libgfortran/io/inquire.c
    trunk/libgfortran/io/unix.c