1 /* MPFR Logging functions. 2 3 Copyright 2005-2018 Free Software Foundation, Inc. 4 Contributed by the AriC and Caramba projects, INRIA. 5 6 This file is part of the GNU MPFR Library. 7 8 The GNU MPFR Library is free software; you can redistribute it and/or modify 9 it under the terms of the GNU Lesser General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or (at your 11 option) any later version. 12 13 The GNU MPFR Library is distributed in the hope that it will be useful, but 14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 16 License for more details. 17 18 You should have received a copy of the GNU Lesser General Public License 19 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see 20 http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., 21 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ 22 23 #include "mpfr-impl.h" 24 25 /* Logging MPFR needs GCC >= 3.0 and GLIBC >= 2.0. */ 26 27 #ifdef MPFR_USE_LOGGING 28 29 /* The <time.h> header might not be available everywhere (it is standard, 30 but not even required by freestanding C implementations); thus it isn't 31 included unconditionally. */ 32 #include <time.h> 33 34 /* Define LOGGING variables */ 35 36 FILE *mpfr_log_file; 37 int mpfr_log_flush; 38 int mpfr_log_type; 39 int mpfr_log_level; 40 int mpfr_log_current; 41 int mpfr_log_worstcase_limit; 42 mpfr_prec_t mpfr_log_prec; 43 44 static void mpfr_log_begin (void) __attribute__((constructor)); 45 46 /* We let the system close the LOG itself 47 (Otherwise functions called by destructor can't use LOG File */ 48 static void 49 mpfr_log_begin (void) 50 { 51 const char *var; 52 time_t tt; 53 54 /* Grab some information */ 55 var = getenv ("MPFR_LOG_LEVEL"); 56 mpfr_log_level = var == NULL || *var == 0 ? 7 : atoi (var); 57 mpfr_log_current = 0; 58 59 var = getenv ("MPFR_LOG_PREC"); 60 mpfr_log_prec = var == NULL ? 6 : atol (var); 61 62 /* Get what we need to log */ 63 mpfr_log_type = 0; 64 if (getenv ("MPFR_LOG_INPUT") != NULL) 65 mpfr_log_type |= MPFR_LOG_INPUT_F; 66 if (getenv ("MPFR_LOG_OUTPUT") != NULL) 67 mpfr_log_type |= MPFR_LOG_OUTPUT_F; 68 if (getenv ("MPFR_LOG_TIME") != NULL) 69 mpfr_log_type |= MPFR_LOG_TIME_F; 70 if (getenv ("MPFR_LOG_INTERNAL") != NULL) 71 mpfr_log_type |= MPFR_LOG_INTERNAL_F; 72 if (getenv ("MPFR_LOG_MSG") != NULL) 73 mpfr_log_type |= MPFR_LOG_MSG_F; 74 if (getenv ("MPFR_LOG_ZIV") != NULL) 75 mpfr_log_type |= MPFR_LOG_BADCASE_F; 76 if (getenv ("MPFR_LOG_STAT") != NULL) 77 mpfr_log_type |= MPFR_LOG_STAT_F; 78 if (getenv ("MPFR_LOG_ALL") != NULL) 79 mpfr_log_type = MPFR_LOG_INPUT_F|MPFR_LOG_OUTPUT_F|MPFR_LOG_TIME_F 80 |MPFR_LOG_INTERNAL_F|MPFR_LOG_MSG_F|MPFR_LOG_BADCASE_F|MPFR_LOG_STAT_F; 81 82 mpfr_log_flush = getenv ("MPFR_LOG_FLUSH") != NULL; 83 84 /* Open filename if needed */ 85 var = getenv ("MPFR_LOG_FILE"); 86 if (var == NULL || *var == 0) 87 var = "mpfr.log"; 88 if (mpfr_log_type != 0) 89 { 90 mpfr_log_file = fopen (var, "w"); 91 if (mpfr_log_file == NULL) 92 { 93 fprintf (stderr, "MPFR LOG: Can't open '%s' with w.\n", var); 94 abort (); 95 } 96 time (&tt); 97 fprintf (mpfr_log_file, "MPFR LOG FILE %s\n", ctime (&tt)); 98 fflush (mpfr_log_file); /* always done */ 99 } 100 } 101 102 /* Return user CPU time measured in milliseconds. Thanks to Torbjorn. */ 103 104 #if defined (ANSIONLY) || defined (USG) || defined (__SVR4) \ 105 || defined (_UNICOS) || defined(__hpux) 106 107 int 108 mpfr_get_cputime (void) 109 { 110 return (int) ((unsigned long long) clock () * 1000 / CLOCKS_PER_SEC); 111 } 112 113 #else /* Use getrusage for cputime */ 114 115 #include <sys/types.h> 116 #include <sys/resource.h> 117 118 int 119 mpfr_get_cputime (void) 120 { 121 struct rusage rus; 122 getrusage (0, &rus); 123 return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000; 124 } 125 126 #endif /* cputime */ 127 128 #endif /* MPFR_USE_LOGGING */ 129