87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
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/* Implementation of the dtime intrinsic.
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Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with libgfortran; see the file COPYING. If not,
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write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "libgfortran.h"
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#include "time_1.h"
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#include <gthr.h>
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#ifdef __GTHREAD_MUTEX_INIT
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static __gthread_mutex_t dtime_update_lock = __GTHREAD_MUTEX_INIT;
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#else
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static __gthread_mutex_t dtime_update_lock;
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#endif
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extern void dtime_sub (gfc_array_r4 *t, GFC_REAL_4 *result);
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iexport_proto(dtime_sub);
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void
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dtime_sub (gfc_array_r4 *t, GFC_REAL_4 *result)
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{
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static GFC_REAL_4 tu = 0.0, ts = 0.0, tt = 0.0;
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GFC_REAL_4 *tp;
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long user_sec, user_usec, system_sec, system_usec;
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if (((t->dim[0].ubound + 1 - t->dim[0].lbound)) < 2)
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runtime_error ("Insufficient number of elements in TARRAY.");
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__gthread_mutex_lock (&dtime_update_lock);
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if (__time_1 (&user_sec, &user_usec, &system_sec, &system_usec) == 0)
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{
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tu = (GFC_REAL_4)(user_sec + 1.e-6 * user_usec) - tu;
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ts = (GFC_REAL_4)(system_sec + 1.e-6 * system_usec) - ts;
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tt = tu + ts;
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}
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else
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{
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tu = (GFC_REAL_4)-1.0;
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ts = (GFC_REAL_4)-1.0;
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tt = (GFC_REAL_4)-1.0;
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}
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tp = t->data;
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*tp = tu;
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tp += t->dim[0].stride;
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*tp = ts;
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*result = tt;
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__gthread_mutex_unlock (&dtime_update_lock);
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}
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iexport(dtime_sub);
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extern GFC_REAL_4 dtime (gfc_array_r4 *t);
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export_proto(dtime);
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GFC_REAL_4
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dtime (gfc_array_r4 *t)
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{
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GFC_REAL_4 val;
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dtime_sub (t, &val);
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return val;
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}
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