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re PR libfortran/21324 (#undef GFC_CLEAR_MEMORY causes testsuite failures)

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2005-05-12  Thomas Koenig  <Thomas.Koenig@online.de>

        PR libfortran/21324
        * runtime/memory.c:  Don't define GFC_CLEAR_MEMORY (it's a
        performance hog).
        * io/open.c (new_unit): Zero freshly allocated memory for
        unit structure.
        * io/unit.c (init_units):  Zero freshly allocated memory for
        STDIN, STDOUT and STDERR.
        * io/unix.c (open_internal):  Zero freshly allocated memory
        for unix_stream.
        (fd_to_stream):  Likewise.

From-SVN: r99619
This commit is contained in:
Thomas Koenig 2005-05-12 17:50:33 +00:00 • committed by Thomas Koenig
parent 7cc70b5e3c
commit c42a19d5e3
5 changed files with 20 additions and 1 deletions
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13
libgfortran/ChangeLog
View file

@ -1,3 +1,16 @@
2005-05-12 Thomas Koenig <Thomas.Koenig@online.de>
PR libfortran/21324
* runtime/memory.c: Don't define GFC_CLEAR_MEMORY (it's a
performance hog).
* io/open.c (new_unit): Zero freshly allocated memory for
unit structure.
* io/unit.c (init_units): Zero freshly allocated memory for
STDIN, STDOUT and STDERR.
* io/unix.c (open_internal): Zero freshly allocated memory
for unix_stream.
(fd_to_stream): Likewise.
2005-05-11 Bud Davis <bdavis@gfortran.org>
PR fortran/19478

1
libgfortran/io/open.c
View file

@ -351,6 +351,7 @@ new_unit (unit_flags * flags)
/* Create the unit structure. */
u = get_mem (sizeof (gfc_unit) + ioparm.file_len);
memset (u, '\0', sizeof (gfc_unit) + ioparm.file_len);
u->unit_number = ioparm.unit;
u->s = s;

3
libgfortran/io/unit.c
View file

@ -295,6 +295,7 @@ init_units (void)
if (options.stdin_unit >= 0)
{ /* STDIN */
u = get_mem (sizeof (gfc_unit));
memset (u, '\0', sizeof (gfc_unit));
u->unit_number = options.stdin_unit;
u->s = input_stream ();
@ -316,6 +317,7 @@ init_units (void)
if (options.stdout_unit >= 0)
{ /* STDOUT */
u = get_mem (sizeof (gfc_unit));
memset (u, '\0', sizeof (gfc_unit));
u->unit_number = options.stdout_unit;
u->s = output_stream ();
@ -337,6 +339,7 @@ init_units (void)
if (options.stderr_unit >= 0)
{ /* STDERR */
u = get_mem (sizeof (gfc_unit));
memset (u, '\0', sizeof (gfc_unit));
u->unit_number = options.stderr_unit;
u->s = error_stream ();

2
libgfortran/io/unix.c
View file

@ -872,6 +872,7 @@ open_internal (char *base, int length)
unix_stream *s;
s = get_mem (sizeof (unix_stream));
memset (s, '\0', sizeof (unix_stream));
s->buffer = base;
s->buffer_offset = 0;
@ -900,6 +901,7 @@ fd_to_stream (int fd, int prot, int avoid_mmap)
unix_stream *s;
s = get_mem (sizeof (unix_stream));
memset (s, '\0', sizeof (unix_stream));
s->fd = fd;
s->buffer_offset = 0;

2
libgfortran/runtime/memory.c
View file

@ -36,7 +36,7 @@ Boston, MA 02111-1307, USA. */
return memory that is guaranteed to be set to zero. This can have
a severe efficiency penalty, so it should never be set if good
performance is desired, but it can help when you're debugging code. */
#define GFC_CLEAR_MEMORY
/* #define GFC_CLEAR_MEMORY */
/* If GFC_CHECK_MEMORY is defined, we do some sanity checks at runtime.
This causes small overhead, but again, it also helps debugging. */