1 /* Implementation of the dtime intrinsic. 2 Copyright (C) 2004-2019 Free Software Foundation, Inc. 3 4 This file is part of the GNU Fortran runtime library (libgfortran). 5 6 Libgfortran is free software; you can redistribute it and/or 7 modify it under the terms of the GNU General Public 8 License as published by the Free Software Foundation; either 9 version 3 of the License, or (at your option) any later version. 10 11 Libgfortran is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 Under Section 7 of GPL version 3, you are granted additional 17 permissions described in the GCC Runtime Library Exception, version 18 3.1, as published by the Free Software Foundation. 19 20 You should have received a copy of the GNU General Public License and 21 a copy of the GCC Runtime Library Exception along with this program; 22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 <http://www.gnu.org/licenses/>. */ 24 25 #include "libgfortran.h" 26 #include "time_1.h" 27 #include <gthr.h> 28 29 #ifdef __GTHREAD_MUTEX_INIT 30 static __gthread_mutex_t dtime_update_lock = __GTHREAD_MUTEX_INIT; 31 #else 32 static __gthread_mutex_t dtime_update_lock; 33 #endif 34 35 extern void dtime_sub (gfc_array_r4 *t, GFC_REAL_4 *result); 36 iexport_proto(dtime_sub); 37 38 void 39 dtime_sub (gfc_array_r4 *t, GFC_REAL_4 *result) 40 { 41 GFC_REAL_4 *tp; 42 long user_sec, user_usec, system_sec, system_usec; 43 static long us = 0, uu = 0, ss = 0 , su = 0; 44 GFC_REAL_4 tu, ts, tt; 45 46 if (((GFC_DESCRIPTOR_EXTENT(t,0))) < 2) 47 runtime_error ("Insufficient number of elements in TARRAY."); 48 49 __gthread_mutex_lock (&dtime_update_lock); 50 if (gf_cputime (&user_sec, &user_usec, &system_sec, &system_usec) == 0) 51 { 52 tu = (GFC_REAL_4) ((user_sec - us) + 1.e-6 * (user_usec - uu)); 53 ts = (GFC_REAL_4) ((system_sec - ss) + 1.e-6 * (system_usec - su)); 54 tt = tu + ts; 55 us = user_sec; 56 uu = user_usec; 57 ss = system_sec; 58 su = system_usec; 59 } 60 else 61 { 62 tu = -1; 63 ts = -1; 64 tt = -1; 65 } 66 67 tp = t->base_addr; 68 69 *tp = tu; 70 tp += GFC_DESCRIPTOR_STRIDE(t,0); 71 *tp = ts; 72 *result = tt; 73 __gthread_mutex_unlock (&dtime_update_lock); 74 } 75 iexport(dtime_sub); 76 77 extern GFC_REAL_4 dtime (gfc_array_r4 *t); 78 export_proto(dtime); 79 80 GFC_REAL_4 81 dtime (gfc_array_r4 *t) 82 { 83 GFC_REAL_4 val; 84 dtime_sub (t, &val); 85 return val; 86 } 87