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re PR libfortran/41157 (dtime not consistent in times reported)

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2009-08-24  Steven G. Kargl  <kargl@gcc.gnu.org>

    PR fortran/41157
    * dtime.c (dtime_sub): Fix computing time increment.
    * time_1.h: Add <sys/types.h> header.  Use RUSAGE_SELF macro instead
    of a hardcoded 0.

From-SVN: r151072
This commit is contained in:
Steven G. Kargl 2009-08-25 01:47:23 +00:00
parent 1ed659c18d
commit 4551438c75
3 changed files with 23 additions and 7 deletions
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7
libgfortran/ChangeLog
View File

@ -1,3 +1,10 @@
2009-08-24 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/41157
* dtime.c (dtime_sub): Fix computing time increment.
* time_1.h: Add <sys/types.h> header. Use RUSAGE_SELF macro instead
of a hardcoded 0.
2009-08-24 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* configure.ac (AC_PREREQ): Bump to 2.64.

17
libgfortran/intrinsics/dtime.c
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@ -38,9 +38,10 @@ iexport_proto(dtime_sub);
void
dtime_sub (gfc_array_r4 *t, GFC_REAL_4 *result)
{
static GFC_REAL_4 tu = 0.0, ts = 0.0, tt = 0.0;
GFC_REAL_4 *tp;
long user_sec, user_usec, system_sec, system_usec;
static long us = 0, uu = 0, ss = 0 , su = 0;
GFC_REAL_4 tu, ts, tt;
if (((GFC_DESCRIPTOR_EXTENT(t,0))) < 2)
runtime_error ("Insufficient number of elements in TARRAY.");
@ -48,15 +49,19 @@ dtime_sub (gfc_array_r4 *t, GFC_REAL_4 *result)
__gthread_mutex_lock (&dtime_update_lock);
if (__time_1 (&user_sec, &user_usec, &system_sec, &system_usec) == 0)
{
tu = (GFC_REAL_4)(user_sec + 1.e-6 * user_usec) - tu;
ts = (GFC_REAL_4)(system_sec + 1.e-6 * system_usec) - ts;
tu = (GFC_REAL_4) ((user_sec - us) + 1.e-6 * (user_usec - uu));
ts = (GFC_REAL_4) ((system_sec - ss) + 1.e-6 * (system_usec - su));
tt = tu + ts;
us = user_sec;
uu = user_usec;
ss = system_sec;
su = system_usec;
}
else
{
tu = (GFC_REAL_4)-1.0;
ts = (GFC_REAL_4)-1.0;
tt = (GFC_REAL_4)-1.0;
tu = -1;
ts = -1;
tt = -1;
}
tp = t->data;

6
libgfortran/intrinsics/time_1.h
View File

@ -51,6 +51,10 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
# endif
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
/* The most accurate way to get the CPU time is getrusage (). */
#if defined (HAVE_GETRUSAGE) && defined (HAVE_SYS_RESOURCE_H)
# include <sys/resource.h>
@ -112,7 +116,7 @@ __time_1 (long *user_sec, long *user_usec, long *system_sec, long *system_usec)
{
#if defined (HAVE_GETRUSAGE) && defined (HAVE_SYS_RESOURCE_H)
struct rusage usage;
getrusage (0, &usage);
getrusage (RUSAGE_SELF, &usage);
*user_sec = usage.ru_utime.tv_sec;
*user_usec = usage.ru_utime.tv_usec;