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Export the temp buffer functionality in the debug functions interface

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to allow sharing more code between libwine and ntdll.
This commit is contained in:
Alexandre Julliard 2005-09-26 16:45:25 +00:00
parent 2f9678727f
commit a443761b8d
3 changed files with 66 additions and 173 deletions
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153
dlls/ntdll/debugtools.c
View File

@ -42,6 +42,8 @@
WINE_DECLARE_DEBUG_CHANNEL(tid);
static struct __wine_debug_functions default_funcs;
/* ---------------------------------------------------------------------- */
/* filter for page-fault exceptions */
@ -59,7 +61,7 @@ static inline struct debug_info *get_info(void)
}
/* allocate some tmp space for a string */
static void *gimme1(int n)
static char *get_temp_buffer( size_t n )
{
struct debug_info *info = get_info();
char *res = info->str_pos;
@ -70,101 +72,10 @@ static void *gimme1(int n)
}
/* release extra space that we requested in gimme1() */
static inline void release( void *ptr )
static void release_temp_buffer( char *ptr, size_t size )
{
struct debug_info *info = get_info();
info->str_pos = ptr;
}
/* put an ASCII string into the debug buffer */
inline static char *put_string_a( const char *src, int n )
{
static const char hex[16] = "0123456789abcdef";
char *dst, *res;
size_t size;
if (n == -1) n = strlen(src);
if (n < 0) n = 0;
size = 10 + min( 300, n * 4 );
dst = res = gimme1( size );
*dst++ = '"';
while (n-- > 0 && dst <= res + size - 9)
{
unsigned char c = *src++;
switch (c)
{
case '\n': *dst++ = '\\'; *dst++ = 'n'; break;
case '\r': *dst++ = '\\'; *dst++ = 'r'; break;
case '\t': *dst++ = '\\'; *dst++ = 't'; break;
case '"': *dst++ = '\\'; *dst++ = '"'; break;
case '\\': *dst++ = '\\'; *dst++ = '\\'; break;
default:
if (c >= ' ' && c <= 126)
*dst++ = c;
else
{
*dst++ = '\\';
*dst++ = 'x';
*dst++ = hex[(c >> 4) & 0x0f];
*dst++ = hex[c & 0x0f];
}
}
}
*dst++ = '"';
if (*src)
{
*dst++ = '.';
*dst++ = '.';
*dst++ = '.';
}
*dst++ = '\0';
release( dst );
return res;
}
/* put a Unicode string into the debug buffer */
inline static char *put_string_w( const WCHAR *src, int n )
{
char *dst, *res;
size_t size;
if (n == -1) n = strlenW(src);
if (n < 0) n = 0;
size = 12 + min( 300, n * 5 );
dst = res = gimme1( size );
*dst++ = 'L';
*dst++ = '"';
while (n-- > 0 && dst <= res + size - 10)
{
WCHAR c = *src++;
switch (c)
{
case '\n': *dst++ = '\\'; *dst++ = 'n'; break;
case '\r': *dst++ = '\\'; *dst++ = 'r'; break;
case '\t': *dst++ = '\\'; *dst++ = 't'; break;
case '"': *dst++ = '\\'; *dst++ = '"'; break;
case '\\': *dst++ = '\\'; *dst++ = '\\'; break;
default:
if (c >= ' ' && c <= 126)
*dst++ = c;
else
{
*dst++ = '\\';
sprintf(dst,"%04x",c);
dst+=4;
}
}
}
*dst++ = '"';
if (*src)
{
*dst++ = '.';
*dst++ = '.';
*dst++ = '.';
}
*dst++ = '\0';
release( dst );
return res;
info->str_pos = ptr + size;
}
/***********************************************************************
@ -172,25 +83,18 @@ inline static char *put_string_w( const WCHAR *src, int n )
*/
static const char *NTDLL_dbgstr_an( const char *src, int n )
{
char *res, *old_pos;
const char *res;
struct debug_info *info = get_info();
if (!HIWORD(src))
{
if (!src) return "(null)";
res = gimme1(6);
sprintf(res, "#%04x", LOWORD(src) );
return res;
}
/* save current position to restore it on exception */
old_pos = info->str_pos;
char *old_pos = info->str_pos;
__TRY
{
res = put_string_a( src, n );
res = default_funcs.dbgstr_an( src, n );
}
__EXCEPT(page_fault)
{
release( old_pos );
release_temp_buffer( old_pos, 0 );
return "(invalid)";
}
__ENDTRY
@ -202,46 +106,24 @@ static const char *NTDLL_dbgstr_an( const char *src, int n )
*/
static const char *NTDLL_dbgstr_wn( const WCHAR *src, int n )
{
char *res, *old_pos;
const char *res;
struct debug_info *info = get_info();
if (!HIWORD(src))
{
if (!src) return "(null)";
res = gimme1(6);
sprintf(res, "#%04x", LOWORD(src) );
return res;
}
/* save current position to restore it on exception */
old_pos = info->str_pos;
char *old_pos = info->str_pos;
__TRY
{
res = put_string_w( src, n );
res = default_funcs.dbgstr_wn( src, n );
}
__EXCEPT(page_fault)
{
release( old_pos );
release_temp_buffer( old_pos, 0 );
return "(invalid)";
}
__ENDTRY
return res;
}
/***********************************************************************
* NTDLL_dbg_vsprintf
*/
static const char *NTDLL_dbg_vsprintf( const char *format, va_list args )
{
static const int max_size = 200;
char *res = gimme1( max_size );
int len = vsnprintf( res, max_size, format, args );
if (len == -1 || len >= max_size) res[max_size-1] = 0;
else release( res + len + 1 );
return res;
}
/***********************************************************************
* NTDLL_dbg_vprintf
*/
@ -305,9 +187,10 @@ static int NTDLL_dbg_vlog( enum __wine_debug_class cls, struct __wine_debug_chan
static const struct __wine_debug_functions funcs =
{
get_temp_buffer,
release_temp_buffer,
NTDLL_dbgstr_an,
NTDLL_dbgstr_wn,
NTDLL_dbg_vsprintf,
NTDLL_dbg_vprintf,
NTDLL_dbg_vlog
};
@ -319,6 +202,6 @@ void debug_init(void)
{
extern void __wine_dbg_ntdll_init(void);
__wine_dbg_set_functions( &funcs, sizeof(funcs) );
__wine_dbg_set_functions( &funcs, &default_funcs, sizeof(funcs) );
__wine_dbg_ntdll_init(); /* hack: register debug channels early */
}

6
include/wine/debug.h
View File

@ -137,15 +137,17 @@ struct __wine_debug_channel
struct __wine_debug_functions
{
char * (*get_temp_buffer)( size_t n );
void (*release_temp_buffer)( char *buffer, size_t n );
const char * (*dbgstr_an)( const char * s, int n );
const char * (*dbgstr_wn)( const WCHAR *s, int n );
const char * (*dbg_vsprintf)( const char *format, va_list args );
int (*dbg_vprintf)( const char *format, va_list args );
int (*dbg_vlog)( enum __wine_debug_class cls, struct __wine_debug_channel *channel,
const char *function, const char *format, va_list args );
};
extern void __wine_dbg_set_functions( const struct __wine_debug_functions *funcs, size_t size );
extern void __wine_dbg_set_functions( const struct __wine_debug_functions *new_funcs,
struct __wine_debug_functions *old_funcs, size_t size );
/*
* Exported definitions and macros

80
libs/wine/debug.c
View File

@ -198,7 +198,7 @@ int wine_dbg_parse_options( const char *str )
return errors;
}
/* varargs wrapper for __wine_dbg_vprintf */
/* varargs wrapper for funcs.dbg_vprintf */
int wine_dbg_printf( const char *format, ... )
{
int ret;
@ -210,21 +210,25 @@ int wine_dbg_printf( const char *format, ... )
return ret;
}
/* varargs wrapper for __wine_dbg_vsprintf */
/* printf with temp buffer allocation */
const char *wine_dbg_sprintf( const char *format, ... )
{
const char *ret;
static const int max_size = 200;
char *ret;
int len;
va_list valist;
va_start(valist, format);
ret = funcs.dbg_vsprintf( format, valist );
ret = funcs.get_temp_buffer( max_size );
len = vsnprintf( ret, max_size, format, valist );
if (len == -1 || len >= max_size) ret[max_size-1] = 0;
else funcs.release_temp_buffer( ret, len + 1 );
va_end(valist);
return ret;
}
/* varargs wrapper for __wine_dbg_vlog */
/* varargs wrapper for funcs.dbg_vlog */
int wine_dbg_log( enum __wine_debug_class cls, struct __wine_debug_channel *channel,
const char *func, const char *format, ... )
{
@ -240,7 +244,7 @@ int wine_dbg_log( enum __wine_debug_class cls, struct __wine_debug_channel *chan
/* allocate some tmp string space */
/* FIXME: this is not 100% thread-safe */
static char *get_tmp_space( int size )
static char *get_temp_buffer( size_t size )
{
static char *list[32];
static int pos;
@ -253,24 +257,33 @@ static char *get_tmp_space( int size )
}
/* release unused part of the buffer */
static void release_temp_buffer( char *buffer, size_t size )
{
/* don't bother doing anything */
}
/* default implementation of wine_dbgstr_an */
static const char *default_dbgstr_an( const char *str, int n )
{
static const char hex[16] = "0123456789abcdef";
char *dst, *res;
size_t size;
if (!HIWORD(str))
if (!((ULONG_PTR)str >> 16))
{
if (!str) return "(null)";
res = get_tmp_space( 6 );
res = funcs.get_temp_buffer( 6 );
sprintf( res, "#%04x", LOWORD(str) );
return res;
}
if (n == -1) n = strlen(str);
if (n < 0) n = 0;
else if (n > 200) n = 200;
dst = res = get_tmp_space( n * 4 + 6 );
size = 10 + min( 300, n * 4 );
dst = res = funcs.get_temp_buffer( size );
*dst++ = '"';
while (n-- > 0)
while (n-- > 0 && dst <= res + size - 9)
{
unsigned char c = *str++;
switch (c)
@ -286,9 +299,9 @@ static const char *default_dbgstr_an( const char *str, int n )
else
{
*dst++ = '\\';
*dst++ = '0' + ((c >> 6) & 7);
*dst++ = '0' + ((c >> 3) & 7);
*dst++ = '0' + ((c >> 0) & 7);
*dst++ = 'x';
*dst++ = hex[(c >> 4) & 0x0f];
*dst++ = hex[c & 0x0f];
}
}
}
@ -299,7 +312,8 @@ static const char *default_dbgstr_an( const char *str, int n )
*dst++ = '.';
*dst++ = '.';
}
*dst = 0;
*dst++ = 0;
funcs.release_temp_buffer( res, dst - res );
return res;
}
@ -308,21 +322,22 @@ static const char *default_dbgstr_an( const char *str, int n )
static const char *default_dbgstr_wn( const WCHAR *str, int n )
{
char *dst, *res;
size_t size;
if (!HIWORD(str))
if (!((ULONG_PTR)str >> 16))
{
if (!str) return "(null)";
res = get_tmp_space( 6 );
res = funcs.get_temp_buffer( 6 );
sprintf( res, "#%04x", LOWORD(str) );
return res;
}
if (n == -1) n = strlenW(str);
if (n < 0) n = 0;
else if (n > 200) n = 200;
dst = res = get_tmp_space( n * 5 + 7 );
size = 12 + min( 300, n * 5 );
dst = res = funcs.get_temp_buffer( n * 5 + 7 );
*dst++ = 'L';
*dst++ = '"';
while (n-- > 0)
while (n-- > 0 && dst <= res + size - 10)
{
WCHAR c = *str++;
switch (c)
@ -350,22 +365,12 @@ static const char *default_dbgstr_wn( const WCHAR *str, int n )
*dst++ = '.';
*dst++ = '.';
}
*dst = 0;
*dst++ = 0;
funcs.release_temp_buffer( res, dst - res );
return res;
}
/* default implementation of wine_dbg_vsprintf */
static const char *default_dbg_vsprintf( const char *format, va_list args )
{
static const int max_size = 200;
char *res = get_tmp_space( max_size );
int len = vsnprintf( res, max_size, format, args );
if (len == -1 || len >= max_size) res[max_size-1] = 0;
return res;
}
/* default implementation of wine_dbg_vprintf */
static int default_dbg_vprintf( const char *format, va_list args )
{
@ -408,16 +413,19 @@ const char *wine_dbgstr_w( const WCHAR *s )
return funcs.dbgstr_wn( s, -1 );
}
void __wine_dbg_set_functions( const struct __wine_debug_functions *new_funcs, size_t size )
void __wine_dbg_set_functions( const struct __wine_debug_functions *new_funcs,
struct __wine_debug_functions *old_funcs, size_t size )
{
memcpy( &funcs, new_funcs, min(sizeof(funcs),size) );
if (old_funcs) memcpy( old_funcs, &funcs, min(sizeof(funcs),size) );
if (new_funcs) memcpy( &funcs, new_funcs, min(sizeof(funcs),size) );
}
static struct __wine_debug_functions funcs =
{
get_temp_buffer,
release_temp_buffer,
default_dbgstr_an,
default_dbgstr_wn,
default_dbg_vsprintf,
default_dbg_vprintf,
default_dbg_vlog
};