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/* MPFR Logging functions.
Copyright 2005 Free Software Foundation, Inc.
This file is part of the MPFR Library.
The 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 2.1 of the License, or (at your
option) any later version.
The 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 MPFR Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Place, Fifth Floor, Boston,
MA 02110-1301, USA. */
#include <stdio.h>
#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 <printf.h>
#include <stdarg.h>
#include <time.h>
# if !__MPFR_GLIBC(2,0)
# error "Logging not supported. (Glibc >= 2.0)"
# endif
/* Define LOGGING variables */
FILE *mpfr_log_file;
int mpfr_log_type;
int mpfr_log_level;
int mpfr_log_base;
int mpfr_log_current;
int mpfr_log_worstcase_limit;
mp_prec_t mpfr_log_prec;
static int
mpfr_printf_mpfr_print (FILE *stream, const struct printf_info *info,
const void * const *arg)
{
int length;
int org_type_logging;
/* TODO: Use much more flag from info */
mpfr_srcptr w = *((mpfr_srcptr *) (arg[0]));
mp_prec_t prec = mpfr_log_prec != 0 ? mpfr_log_prec
: info->width == -1 ? 0 : (mp_prec_t) info->width;
org_type_logging = mpfr_log_type;
mpfr_log_type = 0; /* We disable the logging during this print! */
if (info->alt)
length = fprintf (stream, "%lu", MPFR_PREC (w));
else
length = mpfr_out_str (stream, mpfr_log_base, prec, w, GMP_RNDN);
mpfr_log_type = org_type_logging;
return length;
}
static int
mpfr_printf_mpfr_arginfo (const struct printf_info *info, size_t n,
int *argtypes)
{
if (n > 0)
argtypes[0] = PA_POINTER;
return 1;
}
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 *filename;
time_t tt;
/* Grab some information */
filename = getenv ("MPFR_LOG_BASE");
mpfr_log_base = filename == NULL || *filename == 0 ? 10 : atoi (filename);
filename = getenv ("MPFR_LOG_LEVEL");
mpfr_log_level = filename == NULL || *filename == 0 ? 7 : atoi (filename);
mpfr_log_current = 0;
filename = getenv ("MPFR_LOG_PREC");
mpfr_log_prec = filename == NULL || *filename == 0 ? 0 : atol (filename);
/* 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;
/* Register printf functions */
register_printf_function ('R', mpfr_printf_mpfr_print,
mpfr_printf_mpfr_arginfo);
/* Open filename if needed */
filename = getenv ("MPFR_LOG_FILE");
filename = filename != NULL && *filename != 0 ? filename : "./mpfr.log";
if (mpfr_log_type != 0)
{
mpfr_log_file = fopen (filename, "w");
if (mpfr_log_file == NULL) {
fprintf (stderr, "MPFR LOG: Can't open '%s' with w.\n", filename);
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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