1 /* Implementation of the dtime intrinsic.
2 Copyright (C) 2004, 2005, 2006, 2007, 2009, 2011 Free Software
5 This file is part of the GNU Fortran runtime library (libgfortran).
7 Libgfortran is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public
9 License as published by the Free Software Foundation; either
10 version 3 of the License, or (at your option) any later version.
12 Libgfortran is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
26 #include "libgfortran.h"
30 #ifdef __GTHREAD_MUTEX_INIT
31 static __gthread_mutex_t dtime_update_lock
= __GTHREAD_MUTEX_INIT
;
33 static __gthread_mutex_t dtime_update_lock
;
36 extern void dtime_sub (gfc_array_r4
*t
, GFC_REAL_4
*result
);
37 iexport_proto(dtime_sub
);
40 dtime_sub (gfc_array_r4
*t
, GFC_REAL_4
*result
)
43 long user_sec
, user_usec
, system_sec
, system_usec
;
44 static long us
= 0, uu
= 0, ss
= 0 , su
= 0;
45 GFC_REAL_4 tu
, ts
, tt
;
47 if (((GFC_DESCRIPTOR_EXTENT(t
,0))) < 2)
48 runtime_error ("Insufficient number of elements in TARRAY.");
50 __gthread_mutex_lock (&dtime_update_lock
);
51 if (gf_cputime (&user_sec
, &user_usec
, &system_sec
, &system_usec
) == 0)
53 tu
= (GFC_REAL_4
) ((user_sec
- us
) + 1.e
-6 * (user_usec
- uu
));
54 ts
= (GFC_REAL_4
) ((system_sec
- ss
) + 1.e
-6 * (system_usec
- su
));
71 tp
+= GFC_DESCRIPTOR_STRIDE(t
,0);
74 __gthread_mutex_unlock (&dtime_update_lock
);
78 extern GFC_REAL_4
dtime (gfc_array_r4
*t
);
82 dtime (gfc_array_r4
*t
)