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Diffstat (limited to 'mpfr/src/logging.c')
| -rw-r--r-- | mpfr/src/logging.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/mpfr/src/logging.c b/mpfr/src/logging.c new file mode 100644 index 0000000000..963fac705a --- /dev/null +++ b/mpfr/src/logging.c @@ -0,0 +1,124 @@ +/* MPFR Logging functions. + +Copyright 2005-2016 Free Software Foundation, Inc. +Contributed by the AriC and Caramba projects, INRIA. + +This file is part of the GNU MPFR Library. + +The GNU MPFR Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation; either version 3 of the License, or (at your +option) any later version. + +The GNU MPFR Library is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public +License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see +http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., +51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#include "mpfr-impl.h" + +/* Logging MPFR needs GCC >= 3.0 and GLIBC >= 2.0. */ + +#ifdef MPFR_USE_LOGGING + +/* Can't include them before (in particular, printf.h) */ +#include <stdlib.h> +#include <stdarg.h> +#include <time.h> + +/* Define LOGGING variables */ + +FILE *mpfr_log_file; +int mpfr_log_type; +int mpfr_log_level; +int mpfr_log_current; +int mpfr_log_worstcase_limit; +mpfr_prec_t mpfr_log_prec; + +static void mpfr_log_begin (void) __attribute__((constructor)); + +/* We let the system close the LOG itself + (Otherwise functions called by destructor can't use LOG File */ +static void +mpfr_log_begin (void) +{ + const char *var; + time_t tt; + + /* Grab some information */ + var = getenv ("MPFR_LOG_LEVEL"); + mpfr_log_level = var == NULL || *var == 0 ? 7 : atoi (var); + mpfr_log_current = 0; + + var = getenv ("MPFR_LOG_PREC"); + mpfr_log_prec = var == NULL ? 6 : atol (var); + + /* Get what we need to log */ + mpfr_log_type = 0; + if (getenv ("MPFR_LOG_INPUT") != NULL) + mpfr_log_type |= MPFR_LOG_INPUT_F; + if (getenv ("MPFR_LOG_OUTPUT") != NULL) + mpfr_log_type |= MPFR_LOG_OUTPUT_F; + if (getenv ("MPFR_LOG_TIME") != NULL) + mpfr_log_type |= MPFR_LOG_TIME_F; + if (getenv ("MPFR_LOG_INTERNAL") != NULL) + mpfr_log_type |= MPFR_LOG_INTERNAL_F; + if (getenv ("MPFR_LOG_MSG") != NULL) + mpfr_log_type |= MPFR_LOG_MSG_F; + if (getenv ("MPFR_LOG_ZIV") != NULL) + mpfr_log_type |= MPFR_LOG_BADCASE_F; + if (getenv ("MPFR_LOG_STAT") != NULL) + mpfr_log_type |= MPFR_LOG_STAT_F; + if (getenv ("MPFR_LOG_ALL") != NULL) + mpfr_log_type = MPFR_LOG_INPUT_F|MPFR_LOG_OUTPUT_F|MPFR_LOG_TIME_F + |MPFR_LOG_INTERNAL_F|MPFR_LOG_MSG_F|MPFR_LOG_BADCASE_F|MPFR_LOG_STAT_F; + + /* Open filename if needed */ + var = getenv ("MPFR_LOG_FILE"); + if (var == NULL || *var == 0) + var = "mpfr.log"; + if (mpfr_log_type != 0) + { + mpfr_log_file = fopen (var, "w"); + if (mpfr_log_file == NULL) + { + fprintf (stderr, "MPFR LOG: Can't open '%s' with w.\n", var); + abort (); + } + time (&tt); + fprintf (mpfr_log_file, "MPFR LOG FILE %s\n", ctime (&tt)); + } +} + +/* Return user CPU time measured in milliseconds. Thanks to Torbjorn. */ + +#if defined (ANSIONLY) || defined (USG) || defined (__SVR4) \ + || defined (_UNICOS) || defined(__hpux) + +int +mpfr_get_cputime (void) +{ + return (int) ((unsigned long long) clock () * 1000 / CLOCKS_PER_SEC); +} + +#else /* Use getrusage for cputime */ + +#include <sys/types.h> +#include <sys/resource.h> + +int +mpfr_get_cputime (void) +{ + struct rusage rus; + getrusage (0, &rus); + return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000; +} + +#endif /* cputime */ + +#endif /* MPFR_USE_LOGGING */ |