1 /* MPFR Logging functions. 2 3 Copyright 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. 4 Contributed by the Arenaire and Caramel 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 /* Can't include them before (in particular, printf.h) */ 30 #include <stdlib.h> 31 #include <stdarg.h> 32 #include <time.h> 33 34 /* Define LOGGING variables */ 35 36 FILE *mpfr_log_file; 37 int mpfr_log_type; 38 int mpfr_log_level; 39 int mpfr_log_current; 40 int mpfr_log_worstcase_limit; 41 mpfr_prec_t mpfr_log_prec; 42 43 static void mpfr_log_begin (void) __attribute__((constructor)); 44 45 /* We let the system close the LOG itself 46 (Otherwise functions called by destructor can't use LOG File */ 47 static void 48 mpfr_log_begin (void) 49 { 50 const char *var; 51 time_t tt; 52 53 /* Grab some information */ 54 var = getenv ("MPFR_LOG_LEVEL"); 55 mpfr_log_level = var == NULL || *var == 0 ? 7 : atoi (var); 56 mpfr_log_current = 0; 57 58 var = getenv ("MPFR_LOG_PREC"); 59 mpfr_log_prec = var == NULL ? 6 : atol (var); 60 61 /* Get what we need to log */ 62 mpfr_log_type = 0; 63 if (getenv ("MPFR_LOG_INPUT") != NULL) 64 mpfr_log_type |= MPFR_LOG_INPUT_F; 65 if (getenv ("MPFR_LOG_OUTPUT") != NULL) 66 mpfr_log_type |= MPFR_LOG_OUTPUT_F; 67 if (getenv ("MPFR_LOG_TIME") != NULL) 68 mpfr_log_type |= MPFR_LOG_TIME_F; 69 if (getenv ("MPFR_LOG_INTERNAL") != NULL) 70 mpfr_log_type |= MPFR_LOG_INTERNAL_F; 71 if (getenv ("MPFR_LOG_MSG") != NULL) 72 mpfr_log_type |= MPFR_LOG_MSG_F; 73 if (getenv ("MPFR_LOG_ZIV") != NULL) 74 mpfr_log_type |= MPFR_LOG_BADCASE_F; 75 if (getenv ("MPFR_LOG_STAT") != NULL) 76 mpfr_log_type |= MPFR_LOG_STAT_F; 77 if (getenv ("MPFR_LOG_ALL") != NULL) 78 mpfr_log_type = MPFR_LOG_INPUT_F|MPFR_LOG_OUTPUT_F|MPFR_LOG_TIME_F 79 |MPFR_LOG_INTERNAL_F|MPFR_LOG_MSG_F|MPFR_LOG_BADCASE_F|MPFR_LOG_STAT_F; 80 81 /* Open filename if needed */ 82 var = getenv ("MPFR_LOG_FILE"); 83 if (var == NULL || *var == 0) 84 var = "mpfr.log"; 85 if (mpfr_log_type != 0) 86 { 87 mpfr_log_file = fopen (var, "w"); 88 if (mpfr_log_file == NULL) 89 { 90 fprintf (stderr, "MPFR LOG: Can't open '%s' with w.\n", var); 91 abort (); 92 } 93 time (&tt); 94 fprintf (mpfr_log_file, "MPFR LOG FILE %s\n", ctime (&tt)); 95 } 96 } 97 98 /* Return user CPU time measured in milliseconds. Thanks to Torbjorn. */ 99 100 #if defined (ANSIONLY) || defined (USG) || defined (__SVR4) \ 101 || defined (_UNICOS) || defined(__hpux) 102 103 int 104 mpfr_get_cputime (void) 105 { 106 return (int) ((unsigned long long) clock () * 1000 / CLOCKS_PER_SEC); 107 } 108 109 #else /* Use getrusage for cputime */ 110 111 #include <sys/types.h> 112 #include <sys/resource.h> 113 114 int 115 mpfr_get_cputime (void) 116 { 117 struct rusage rus; 118 getrusage (0, &rus); 119 return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000; 120 } 121 122 #endif /* cputime */ 123 124 #endif /* MPFR_USE_LOGGING */ 125