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/* MPFR Logging functions.
Copyright 2005-2013 Free Software Foundation, Inc.
Contributed by the AriC and Caramel 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
/* The <time.h> header might not be available everywhere (it is standard,
but not even required by freestanding C implementations); thus it isn't
included unconditionally. */
#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 */
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