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111
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1 /* Implementation of the CPU_TIME intrinsic.
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145
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2 Copyright (C) 2003-2020 Free Software Foundation, Inc.
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111
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3
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4 This file is part of the GNU Fortran runtime library (libgfortran).
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5
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6 Libgfortran is free software; you can redistribute it and/or
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7 modify it under the terms of the GNU General Public
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8 License as published by the Free Software Foundation; either
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9 version 3 of the License, or (at your option) any later version.
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10
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11 Libgfortran is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 Under Section 7 of GPL version 3, you are granted additional
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17 permissions described in the GCC Runtime Library Exception, version
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18 3.1, as published by the Free Software Foundation.
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19
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20 You should have received a copy of the GNU General Public License and
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21 a copy of the GCC Runtime Library Exception along with this program;
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22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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23 <http://www.gnu.org/licenses/>. */
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24
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25 #include "libgfortran.h"
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26 #include "time_1.h"
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27
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28
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29 static void
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30 __cpu_time_1 (long *sec, long *usec)
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31 {
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32 long user_sec, user_usec, system_sec, system_usec;
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33 if (gf_cputime (&user_sec, &user_usec, &system_sec, &system_usec) == 0)
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34 {
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35 *sec = user_sec + system_sec;
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36 *usec = user_usec + system_usec;
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37 }
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38 else
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39 {
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40 *sec = -1;
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41 *usec = 0;
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42 }
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43 }
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44
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45
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46 extern void cpu_time_4 (GFC_REAL_4 *);
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47 iexport_proto(cpu_time_4);
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48
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49 void cpu_time_4 (GFC_REAL_4 *time)
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50 {
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51 long sec, usec;
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52 __cpu_time_1 (&sec, &usec);
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53 *time = sec + usec * GFC_REAL_4_LITERAL(1.e-6);
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54 }
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55 iexport(cpu_time_4);
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56
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57 extern void cpu_time_8 (GFC_REAL_8 *);
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58 export_proto(cpu_time_8);
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59
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60 void cpu_time_8 (GFC_REAL_8 *time)
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61 {
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62 long sec, usec;
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63 __cpu_time_1 (&sec, &usec);
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64 *time = sec + usec * GFC_REAL_8_LITERAL(1.e-6);
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65 }
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66
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67 #ifdef HAVE_GFC_REAL_10
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68 extern void cpu_time_10 (GFC_REAL_10 *);
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69 export_proto(cpu_time_10);
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70
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71 void cpu_time_10 (GFC_REAL_10 *time)
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72 {
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73 long sec, usec;
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74 __cpu_time_1 (&sec, &usec);
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75 *time = sec + usec * GFC_REAL_10_LITERAL(1.e-6);
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76 }
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77 #endif
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78
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79 #ifdef HAVE_GFC_REAL_16
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80 extern void cpu_time_16 (GFC_REAL_16 *);
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81 export_proto(cpu_time_16);
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82
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83 void cpu_time_16 (GFC_REAL_16 *time)
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84 {
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85 long sec, usec;
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86 __cpu_time_1 (&sec, &usec);
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87 *time = sec + usec * GFC_REAL_16_LITERAL(1.e-6);
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88 }
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89 #endif
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90
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91 extern void second_sub (GFC_REAL_4 *);
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92 export_proto(second_sub);
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93
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94 void
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95 second_sub (GFC_REAL_4 *s)
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96 {
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97 cpu_time_4 (s);
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98 }
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99
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100 extern GFC_REAL_4 second (void);
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101 export_proto(second);
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102
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103 GFC_REAL_4
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104 second (void)
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105 {
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106 GFC_REAL_4 s;
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107 cpu_time_4 (&s);
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108 return s;
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109 }
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