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let dbus_verbose print file name, line number and function name if available; this eases debugging.

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This commit is contained in:
Ralf Habacker 2009-12-19 20:51:54 +01:00
parent 25ac34ab64
commit 7f3e29ffdf
2 changed files with 71 additions and 2 deletions
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56
dbus/dbus-internals.c
View file

@ -329,6 +329,46 @@ _dbus_verbose_init (void)
}
}
/** @def DBUS_IS_DIR_SEPARATOR(c)
* macro for checking if character c is a patch separator
*
* @todo move to a header file so that others can use this too
*/
#ifdef DBUS_WIN
#define DBUS_IS_DIR_SEPARATOR(c) (c == '\\' || c == '/')
#else
#define DBUS_IS_DIR_SEPARATOR(c) (c == '/')
#endif
/**
remove source root from file path
the source root is determined by
*/
static char *_dbus_file_path_extract_elements_from_tail(const char *file,int level)
{
static int prefix = -1;
char *p;
if (prefix == -1)
{
char *p = (char *)file + strlen(file);
int i = 0;
prefix = 0;
for (;p >= file;p--)
{
if (DBUS_IS_DIR_SEPARATOR(*p))
{
if (++i >= level)
{
prefix = p-file+1;
break;
}
}
}
}
return (char *)file+prefix;
}
/**
* Implementation of dbus_is_verbose() macro if built with verbose logging
* enabled.
@ -350,7 +390,14 @@ _dbus_is_verbose_real (void)
* @param format printf-style format string.
*/
void
#ifdef DBUS_CPP_SUPPORTS_VARIABLE_MACRO_ARGUMENTS
_dbus_verbose_real (const char *file,
const int line,
const char *function,
const char *format,
#else
_dbus_verbose_real (const char *format,
#endif
...)
{
va_list args;
@ -382,17 +429,24 @@ _dbus_verbose_real (const char *format,
need_pid = TRUE;
else
need_pid = FALSE;
va_start (args, format);
#ifdef DBUS_USE_OUTPUT_DEBUG_STRING
{
char buf[1024];
strcpy(buf,module_name);
#ifdef DBUS_CPP_SUPPORTS_VARIABLE_MACRO_ARGUMENTS
vsprintf (buf+strlen(buf), "[%s(%d):%s] ",_dbus_file_path_extract_elements_from_tail(file,2),line,function);
#endif
vsprintf (buf+strlen(buf),format, args);
va_end (args);
OutputDebugString(buf);
}
#else
#ifdef DBUS_CPP_SUPPORTS_VARIABLE_MACRO_ARGUMENTS
fprintf (stderr, "[%s(%d):%s] ",_dbus_file_path_extract_elements_from_tail(file,2),line,function);
#endif
vfprintf (stderr, format, args);
va_end (args);

17
dbus/dbus-internals.h
View file

@ -83,12 +83,27 @@ void _dbus_warn_check_failed (const char *format,
#ifdef DBUS_ENABLE_VERBOSE_MODE
/*
at least gnu cc and msvc compiler are known to
have support for variable macro argument lists
add other compilers is required
*/
#if defined(__GNUC__) || defined(_MSC_VER)
#define DBUS_CPP_SUPPORTS_VARIABLE_MACRO_ARGUMENTS
#endif
#ifdef DBUS_CPP_SUPPORTS_VARIABLE_MACRO_ARGUMENTS
void _dbus_verbose_real (const char *file, const int line, const char *function,
const char *format,...) _DBUS_GNUC_PRINTF (4, 5);
# define _dbus_verbose(fmt,...) _dbus_verbose_real( __FILE__,__LINE__,__FUNCTION__,fmt, ## __VA_ARGS__)
#else
void _dbus_verbose_real (const char *format,
...) _DBUS_GNUC_PRINTF (1, 2);
# define _dbus_verbose _dbus_verbose_real
#endif
void _dbus_verbose_reset_real (void);
dbus_bool_t _dbus_is_verbose_real (void);
# define _dbus_verbose _dbus_verbose_real
# define _dbus_verbose_reset _dbus_verbose_reset_real
# define _dbus_is_verbose _dbus_is_verbose_real
#else