| /* Implementation of the ETIME intrinsic. |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| Contributed by Steven G. Kargl <kargls@comcast.net>. |
| |
| This file is part of the GNU Fortran 95 runtime library (libgfortran). |
| |
| Libgfortran is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| In addition to the permissions in the GNU General Public License, the |
| Free Software Foundation gives you unlimited permission to link the |
| compiled version of this file into combinations with other programs, |
| and to distribute those combinations without any restriction coming |
| from the use of this file. (The General Public License restrictions |
| do apply in other respects; for example, they cover modification of |
| the file, and distribution when not linked into a combine |
| executable.) |
| |
| Libgfortran is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public |
| License along with libgfortran; see the file COPYING. If not, |
| write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "config.h" |
| #include <sys/types.h> |
| #include "libgfortran.h" |
| |
| #include <stdio.h> |
| |
| #if defined (HAVE_SYS_TIME_H) && defined (HAVE_SYS_RESOURCE_H) |
| #include <sys/time.h> |
| #include <sys/resource.h> |
| #endif |
| |
| extern void etime_sub (gfc_array_r4 *t, GFC_REAL_4 *result); |
| iexport_proto(etime_sub); |
| |
| void |
| etime_sub (gfc_array_r4 *t, GFC_REAL_4 *result) |
| { |
| GFC_REAL_4 tu, ts, tt, *tp; |
| index_type dim; |
| |
| #if defined(HAVE_SYS_TIME_H) && defined(HAVE_SYS_RESOURCE_H) |
| struct rusage rt; |
| |
| if (getrusage(RUSAGE_SELF, &rt) == 0) |
| { |
| tu = (GFC_REAL_4)(rt.ru_utime.tv_sec + 1.e-6 * rt.ru_utime.tv_usec); |
| ts = (GFC_REAL_4)(rt.ru_stime.tv_sec + 1.e-6 * rt.ru_stime.tv_usec); |
| tt = tu + ts; |
| } |
| else |
| { |
| tu = -1.; |
| ts = -1.; |
| tt = -1.; |
| } |
| #else |
| tu = -1.; |
| ts = -1.; |
| tt = -1.; |
| #endif |
| |
| if (((t->dim[0].ubound + 1 - t->dim[0].lbound)) < 2) |
| runtime_error ("Insufficient number of elements in TARRAY."); |
| |
| if (t->dim[0].stride == 0) |
| t->dim[0].stride = 1; |
| |
| tp = t->data; |
| |
| *tp = tu; |
| tp += t->dim[0].stride; |
| *tp = ts; |
| *result = tt; |
| } |
| iexport(etime_sub); |
| |
| extern GFC_REAL_4 etime (gfc_array_r4 *t); |
| export_proto(etime); |
| |
| GFC_REAL_4 |
| etime (gfc_array_r4 *t) |
| { |
| GFC_REAL_4 val; |
| etime_sub (t, &val); |
| return val; |
| } |
| |
| /* LAPACK's test programs declares ETIME external, therefore we |
| need this. */ |
| |
| extern GFC_REAL_4 etime_ (GFC_REAL_4 *t); |
| export_proto_np(etime_); |
| |
| GFC_REAL_4 |
| etime_ (GFC_REAL_4 *t) |
| { |
| gfc_array_r4 desc; |
| GFC_REAL_4 val; |
| |
| /* We only fill in the fields that are used in etime_sub. */ |
| desc.dim[0].lbound = 0; |
| desc.dim[0].ubound = 1; |
| desc.dim[0].stride = 1; |
| desc.data = t; |
| |
| etime_sub (&desc, &val); |
| return val; |
| } |