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arts/mcop/debug.cpp

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/*
Copyright (C) 2000-2002 Stefan Westerfeld
stefan@space.twc.de
(see also below for details on the copyright of arts_strdup_printf,
which is taken from GLib)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "debug.h"
#include <config.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "thread.h"
static int arts_debug_level = Arts::Debug::lInfo;
static bool arts_debug_abort = false;
static const char *arts_debug_prefix = "";
static char *messageAppName = 0;
static Arts::Mutex *arts_debug_mutex = 0;
/* routines for variable length sprintf without buffer overflow (from GLib) */
static char* arts_strdup_vprintf(const char *format, va_list args1);
namespace Arts {
static char * shell_quote(const char *s)
{
char *result;
char *p;
p = result = static_cast<char*>( malloc(strlen(s)*5+1) );
while(*s)
{
if (*s == '\'')
{
*p++ = '\'';
*p++ = '"';
*p++ = *s++;
*p++ = '"';
*p++ = '\'';
}
else
{
*p++ = *s++;
}
}
*p = '\0';
return result;
}
/*
* Call the graphical application to display a message, if
* defined. Otherwise, send to standard error. Debug messages are
* always sent to standard error because they tend to be very verbose.
* Note that the external application is run in the background to
* avoid blocking the sound server.
*/
static void output_message(Debug::Level level, const char *msg) {
char *quoted_msg;
char *buff = 0;
/* default to text output if no message app is defined or if it is a debug message. */
if (messageAppName == 0 || !strcmp(messageAppName, "") || (level == Debug::lDebug))
{
fprintf(stderr, "%s\n", msg);
return;
}
quoted_msg = shell_quote(msg);
switch (level) {
case Debug::lFatal:
buff = arts_strdup_printf("%s -e 'Sound server fatal error:\n\n%s' &", messageAppName, quoted_msg);
break;
case Debug::lWarning:
buff = arts_strdup_printf("%s -w 'Sound server warning message:\n\n%s' &", messageAppName, quoted_msg);
break;
case Debug::lInfo:
buff = arts_strdup_printf("%s -i 'Sound server informational message:\n\n%s' &", messageAppName, quoted_msg);
break;
default:
break; // avoid compile warning
}
free(quoted_msg);
if(buff != 0)
{
system(buff);
free(buff);
}
}
/*
* Display a message using output_message. If the message is the same
* as the previous one, just increment a count but don't display
* it. This prevents flooding the user with duplicate warnings. If the
* message is not the same as the previous one, then we report the
* previously repeated message (if any) and reset the last message and
* count.
*/
static void display_message(Debug::Level level, const char *msg) {
static char lastMsg[1024];
static Debug::Level lastLevel;
static int msgCount = 0;
if(arts_debug_mutex)
arts_debug_mutex->lock();
if (!strncmp(msg, lastMsg, 1024))
{
msgCount++;
} else {
if (msgCount > 0)
{
char *buff;
buff = arts_strdup_printf("%s\n(The previous message was repeated %d times.)", lastMsg, msgCount);
output_message(lastLevel, buff);
free(buff);
}
strncpy(lastMsg, msg, 1024);
lastMsg[ 1023 ] = '\0';
lastLevel = level;
msgCount = 0;
output_message(level, msg);
}
if(arts_debug_mutex)
arts_debug_mutex->unlock();
}
static class DebugInitFromEnv {
public:
DebugInitFromEnv() {
const char *env = getenv("ARTS_DEBUG");
if(env)
{
if(strcmp(env,"debug") == 0)
arts_debug_level = Debug::lDebug;
else if(strcmp(env,"info") == 0)
arts_debug_level = Debug::lInfo;
else if(strcmp(env,"warning") == 0)
arts_debug_level = Debug::lWarning;
else if(strcmp(env,"quiet") == 0)
arts_debug_level = Debug::lFatal;
else
{
fprintf(stderr,
"ARTS_DEBUG must be one of debug,info,warning,quiet\n");
}
}
env = getenv("ARTS_DEBUG_ABORT");
if(env)
arts_debug_abort = true;
}
} debugInitFromEnv;
}
void Arts::Debug::init(const char *prefix, Level level)
{
arts_debug_level = level;
arts_debug_prefix = prefix;
}
void Arts::Debug::fatal(const char *fmt, ...)
{
char *buff;
va_list ap;
va_start(ap, fmt);
buff = arts_strdup_vprintf(fmt, ap);
va_end(ap);
display_message(Debug::lFatal, buff);
free(buff);
if(arts_debug_abort) abort();
exit(1);
}
void Arts::Debug::warning(const char *fmt, ...)
{
if(lWarning >= arts_debug_level)
{
char *buff;
va_list ap;
va_start(ap, fmt);
buff = arts_strdup_vprintf(fmt, ap);
va_end(ap);
display_message(Debug::lWarning, buff);
free(buff);
}
}
void Arts::Debug::info(const char *fmt, ...)
{
if(lInfo >= arts_debug_level)
{
char *buff;
va_list ap;
va_start(ap, fmt);
buff = arts_strdup_vprintf(fmt, ap);
va_end(ap);
display_message(Debug::lInfo, buff);
free(buff);
}
}
void Arts::Debug::debug(const char *fmt, ...)
{
if(lDebug >= arts_debug_level)
{
char *buff;
va_list ap;
va_start(ap, fmt);
buff = arts_strdup_vprintf(fmt, ap);
va_end(ap);
display_message(Debug::lDebug, buff);
free(buff);
}
}
void Arts::Debug::messageApp(const char *appName)
{
messageAppName = (char*) realloc(messageAppName, strlen(appName)+1);
strcpy(messageAppName, appName);
}
void Arts::Debug::initMutex()
{
arts_return_if_fail(arts_debug_mutex == 0);
arts_debug_mutex = new Arts::Mutex();
}
void Arts::Debug::freeMutex()
{
arts_return_if_fail(arts_debug_mutex != 0);
delete arts_debug_mutex;
arts_debug_mutex = 0;
}
/*
* For the sake of portability (snprintf is non-portable), what follows is an
* implementation of a variant g_strdup_printf, to format debug messages of
* an arbitary length appropriately. This is reduntant with flow/gsl/gslglib.c,
* however, as libmcop doesn't necessarily link against gslglib.c, this is a
* more-or-less complete copy.
*/
/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* GScanner: Flexible lexical scanner for general purpose.
* Copyright (C) 1997, 1998 Tim Janik
*
* This 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 of the License, or (at your option) any later version.
*
* This 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 this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <sys/types.h>
#include <stdarg.h>
#include <string.h>
#define g_warning printf
#define g_strerror strerror
/*--- gslglib.h ---*/
#include <limits.h>
#include <float.h>
#include <stddef.h>
#include <stdarg.h>
/* --- GLib typedefs --- */
typedef void* gpointer;
typedef const void* gconstpointer;
typedef char gchar;
typedef unsigned char guchar;
typedef signed short gshort;
typedef unsigned short gushort;
typedef signed int gint;
typedef unsigned int guint;
typedef signed long glong;
typedef unsigned long gulong;
typedef float gfloat;
typedef double gdouble;
typedef size_t gsize;
typedef gchar gint8;
typedef guchar guint8;
typedef gshort gint16;
typedef gushort guint16;
typedef gint gint32;
typedef guint guint32;
typedef gint gboolean;
typedef gint32 GTime;
#ifdef __alpha
typedef long int gint64;
typedef unsigned long int guint64;
#else
typedef long long int gint64;
typedef unsigned long long int guint64;
#endif
typedef struct _GString GString;
/* --- standard macros --- */
#ifndef ABS
#define ABS(a) ((a) > 0 ? (a) : -(a))
#endif
#ifndef MAX
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#endif
#ifndef MIN
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif
#ifndef CLAMP
#define CLAMP(v,l,h) ((v) < (l) ? (l) : (v) > (h) ? (h) : (v))
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE (!FALSE)
#endif
#ifndef NULL
#define NULL ((void*) 0)
#endif
/* --- configure stuff!!! --- */
#ifdef WORDS_BIGENDIAN
#define G_BYTE_ORDER G_BIG_ENDIAN
#else
#define G_BYTE_ORDER G_LITTLE_ENDIAN
#endif
/* #define GLIB_HAVE_STPCPY 1 */
/* Define G_VA_COPY() to do the right thing for copying va_list variables.
* glibconfig.h may have already defined G_VA_COPY as va_copy or __va_copy.
*/
#if !defined (G_VA_COPY)
# if defined (__GNUC__) && defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32) || defined(WIN32)) || defined(__s390__) || defined(__x86_64__)
# define G_VA_COPY(ap1, ap2) (*(ap1) = *(ap2))
# elif defined (G_VA_COPY_AS_ARRAY)
# define G_VA_COPY(ap1, ap2) g_memmove ((ap1), (ap2), sizeof (va_list))
# else /* va_list is a pointer */
# define G_VA_COPY(ap1, ap2) ((ap1) = (ap2))
# endif /* va_list is a pointer */
#endif /* !G_VA_COPY */
/* --- glib macros --- */
#define G_MINFLOAT FLT_MIN
#define G_MAXFLOAT FLT_MAX
#define G_MINDOUBLE DBL_MIN
#define G_MAXDOUBLE DBL_MAX
#define G_MINSHORT SHRT_MIN
#define G_MAXSHORT SHRT_MAX
#define G_MAXUSHORT USHRT_MAX
#define G_MININT INT_MIN
#define G_MAXINT INT_MAX
#define G_MAXUINT UINT_MAX
#define G_MINLONG LONG_MIN
#define G_MAXLONG LONG_MAX
#define G_MAXULONG ULONG_MAX
#define G_USEC_PER_SEC 1000000
#define G_LITTLE_ENDIAN 1234
#define G_BIG_ENDIAN 4321
#define G_STRINGIFY(macro_or_string) G_STRINGIFY_ARG (macro_or_string)
#define G_STRINGIFY_ARG(contents) #contents
#if defined __GNUC__ && !defined __cplusplus
# define G_STRLOC __FILE__ ":" G_STRINGIFY (__LINE__) ":" __PRETTY_FUNCTION__ "()"
#else
# define G_STRLOC __FILE__ ":" G_STRINGIFY (__LINE__)
#endif
/* subtract from biased_exponent to form base2 exponent (normal numbers) */
typedef union _GDoubleIEEE754 GDoubleIEEE754;
typedef union _GFloatIEEE754 GFloatIEEE754;
#define G_IEEE754_FLOAT_BIAS (127)
#define G_IEEE754_DOUBLE_BIAS (1023)
/* multiply with base2 exponent to get base10 exponent (nomal numbers) */
#define G_LOG_2_BASE_10 (0.30102999566398119521)
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
union _GFloatIEEE754
{
gfloat v_float;
struct {
guint mantissa : 23;
guint biased_exponent : 8;
guint sign : 1;
} mpn;
};
union _GDoubleIEEE754
{
gdouble v_double;
struct {
guint mantissa_low : 32;
guint mantissa_high : 20;
guint biased_exponent : 11;
guint sign : 1;
} mpn;
};
#elif G_BYTE_ORDER == G_BIG_ENDIAN
union _GFloatIEEE754
{
gfloat v_float;
struct {
guint sign : 1;
guint biased_exponent : 8;
guint mantissa : 23;
} mpn;
};
union _GDoubleIEEE754
{
gdouble v_double;
struct {
guint sign : 1;
guint biased_exponent : 11;
guint mantissa_high : 20;
guint mantissa_low : 32;
} mpn;
};
#else /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */
#error unknown ENDIAN type
#endif /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#define GLIB_SIZEOF_INTMAX (8 /* educated guess */)
typedef struct
{
guint min_width;
guint precision;
gboolean alternate_format, zero_padding, adjust_left, locale_grouping;
gboolean add_space, add_sign, possible_sign, seen_precision;
gboolean mod_half, mod_long, mod_extra_long;
} PrintfArgSpec;
static gsize
printf_string_upper_bound (const gchar *format,
gboolean may_warn,
va_list args)
{
static gboolean honour_longs = sizeof(long) > 4 || sizeof(void*) > 4;
gsize len = 1;
if (!format)
return len;
while (*format)
{
gchar c = *format++;
if (c != '%')
len += 1;
else /* (c == '%') */
{
PrintfArgSpec spec = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
gboolean seen_l = FALSE, conv_done = FALSE;
gsize conv_len = 0;
const gchar *spec_start = format;
do
{
c = *format++;
switch (c)
{
GDoubleIEEE754 u_double;
guint v_uint;
gint v_int;
const gchar *v_string;
/* beware of positional parameters
*/
case '$':
if (may_warn)
g_warning (G_STRLOC ": unable to handle positional parameters (%%n$)");
len += 1024; /* try adding some safety padding */
break;
/* parse flags
*/
case '#':
spec.alternate_format = TRUE;
break;
case '0':
spec.zero_padding = TRUE;
break;
case '-':
spec.adjust_left = TRUE;
break;
case ' ':
spec.add_space = TRUE;
break;
case '+':
spec.add_sign = TRUE;
break;
case '\'':
spec.locale_grouping = TRUE;
break;
/* parse output size specifications
*/
case '.':
spec.seen_precision = TRUE;
break;
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
v_uint = c - '0';
c = *format;
while (c >= '0' && c <= '9')
{
format++;
v_uint = v_uint * 10 + c - '0';
c = *format;
}
if (spec.seen_precision)
spec.precision = MAX (spec.precision, v_uint);
else
spec.min_width = MAX (spec.min_width, v_uint);
break;
case '*':
v_int = va_arg (args, int);
if (spec.seen_precision)
{
/* forget about negative precision */
if (v_int >= 0)
spec.precision = MAX (spec.precision, (unsigned)v_int);
}
else
{
if (v_int < 0)
{
v_int = - v_int;
spec.adjust_left = TRUE;
}
spec.min_width = MAX (spec.min_width, (unsigned)v_int);
}
break;
/* parse type modifiers
*/
case 'h':
spec.mod_half = TRUE;
break;
case 'l':
if (!seen_l)
{
spec.mod_long = TRUE;
seen_l = TRUE;
break;
}
/* else, fall through */
case 'L':
case 'q':
spec.mod_long = TRUE;
spec.mod_extra_long = TRUE;
break;
case 'z':
case 'Z':
if (sizeof(size_t))
{
spec.mod_long = TRUE;
spec.mod_extra_long = TRUE;
}
break;
case 't':
if (sizeof(ptrdiff_t) > 4)
{
spec.mod_long = TRUE;
spec.mod_extra_long = TRUE;
}
break;
case 'j':
if (GLIB_SIZEOF_INTMAX > 4)
{
spec.mod_long = TRUE;
spec.mod_extra_long = TRUE;
}
break;
/* parse output conversions
*/
case '%':
conv_len += 1;
break;
case 'O':
case 'D':
case 'I':
case 'U':
/* some C libraries feature long variants for these as well? */
spec.mod_long = TRUE;
/* fall through */
case 'o':
conv_len += 2;
/* fall through */
case 'd':
case 'i':
conv_len += 1; /* sign */
/* fall through */
case 'u':
conv_len += 4;
/* fall through */
case 'x':
case 'X':
spec.possible_sign = TRUE;
conv_len += 10;
if (spec.mod_long && honour_longs)
conv_len *= 2;
if (spec.mod_extra_long)
conv_len *= 2;
if (spec.mod_extra_long)
{
(void) va_arg (args, gint64);
}
else if (spec.mod_long)
(void) va_arg (args, long);
else
(void) va_arg (args, int);
break;
case 'A':
case 'a':
/* 0x */
conv_len += 2;
/* fall through */
case 'g':
case 'G':
case 'e':
case 'E':
case 'f':
spec.possible_sign = TRUE;
/* n . dddddddddddddddddddddddd E +- eeee */
conv_len += 1 + 1 + MAX (24, spec.precision) + 1 + 1 + 4;
if (may_warn && spec.mod_extra_long)
g_warning (G_STRLOC ": unable to handle long double, collecting double only");
#ifdef HAVE_LONG_DOUBLE
#error need to implement special handling for long double
#endif
u_double.v_double = va_arg (args, double);
/* %f can expand up to all significant digits before '.' (308) */
if (c == 'f' &&
u_double.mpn.biased_exponent > 0 && u_double.mpn.biased_exponent < 2047)
{
gint exp = u_double.mpn.biased_exponent;
exp -= G_IEEE754_DOUBLE_BIAS;
exp = (gint)(exp * G_LOG_2_BASE_10 + 1);
conv_len += ABS (exp); /* exp can be <0 */
}
/* some printf() implementations require extra padding for rounding */
conv_len += 2;
/* we can't really handle locale specific grouping here */
if (spec.locale_grouping)
conv_len *= 2;
break;
case 'C':
spec.mod_long = TRUE;
/* fall through */
case 'c':
conv_len += spec.mod_long ? MB_LEN_MAX : 1;
(void) va_arg (args, int);
break;
case 'S':
spec.mod_long = TRUE;
/* fall through */
case 's':
v_string = va_arg (args, char*);
if (!v_string)
conv_len += 8; /* hold "(null)" */
else if (spec.seen_precision)
conv_len += spec.precision;
else
conv_len += strlen (v_string);
conv_done = TRUE;
if (spec.mod_long)
{
if (may_warn)
g_warning (G_STRLOC": unable to handle wide char strings");
len += 1024; /* try adding some safety padding */
}
break;
case 'P': /* do we actually need this? */
/* fall through */
case 'p':
spec.alternate_format = TRUE;
conv_len += 10;
if (honour_longs)
conv_len *= 2;
/* fall through */
case 'n':
conv_done = TRUE;
(void) va_arg (args, void*);
break;
case 'm':
/* there's not much we can do to be clever */
v_string = g_strerror (errno);
v_uint = v_string ? strlen (v_string) : 0;
conv_len += MAX (256, v_uint);
break;
/* handle invalid cases
*/
case '\000':
/* no conversion specification, bad bad */
conv_len += format - spec_start;
break;
default:
if (may_warn)
g_warning (G_STRLOC": unable to handle `%c' while parsing format",
c);
break;
}
conv_done |= conv_len > 0;
}
while (!conv_done);
/* handle width specifications */
conv_len = MAX (conv_len, MAX (spec.precision, spec.min_width));
/* handle flags */
conv_len += spec.alternate_format ? 2 : 0;
conv_len += (spec.add_space || spec.add_sign || spec.possible_sign);
/* finally done */
len += conv_len;
} /* else (c == '%') */
} /* while (*format) */
return len;
}
static char*
#ifdef __GNUC__
__attribute__ ( (format (printf, 1, 0) ) )
#endif
arts_strdup_vprintf (const char *format, va_list args1)
{
gchar *buffer;
#ifdef HAVE_VASPRINTF
if (vasprintf (&buffer, format, args1) < 0)
buffer = NULL;
#else
va_list args2;
G_VA_COPY (args2, args1);
buffer = (gchar *)malloc (printf_string_upper_bound (format, TRUE, args1));
vsprintf (buffer, format, args2);
va_end (args2);
#endif
return buffer;
}
char*
#ifdef __GNUC__
__attribute__ ( (format (printf, 1, 0) ) )
#endif
arts_strdup_printf (const char *format, ...)
{
gchar *buffer;
va_list args;
va_start (args, format);
buffer = arts_strdup_vprintf (format, args);
va_end (args);
return buffer;
}
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