87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/* Implementation of the dtime intrinsic.
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Copyright (C) 2004-2018 Free Software Foundation, Inc.
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This file is part of the GNU Fortran 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 3 of the License, or (at your option) any later version.
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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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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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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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GFC_REAL_4 *tp;
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long user_sec, user_usec, system_sec, system_usec;
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static long us = 0, uu = 0, ss = 0 , su = 0;
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GFC_REAL_4 tu, ts, tt;
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if (((GFC_DESCRIPTOR_EXTENT(t,0))) < 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 (gf_cputime (&user_sec, &user_usec, &system_sec, &system_usec) == 0)
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{
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tu = (GFC_REAL_4) ((user_sec - us) + 1.e-6 * (user_usec - uu));
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ts = (GFC_REAL_4) ((system_sec - ss) + 1.e-6 * (system_usec - su));
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tt = tu + ts;
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us = user_sec;
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uu = user_usec;
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ss = system_sec;
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su = system_usec;
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}
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else
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{
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tu = -1;
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ts = -1;
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tt = -1;
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}
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tp = t->base_addr;
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*tp = tu;
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tp += GFC_DESCRIPTOR_STRIDE(t,0);
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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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