1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Xiangxiu Yang
3 * 2005 Mathieu Desnoyers
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License Version 2.1 as published by the Free Software Foundation.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
29 #include "ltt-private.h"
32 static unsigned intSizes
[] = {
33 sizeof(int8_t), sizeof(int16_t), sizeof(int32_t), sizeof(int64_t),
36 static unsigned floatSizes
[] = {
37 0, 0, sizeof(float), sizeof(double), 0, sizeof(float), sizeof(double) };
40 typedef enum _intSizesNames
{ SIZE_INT8
, SIZE_INT16
, SIZE_INT32
,
41 SIZE_INT64
, SIZE_SHORT
, INT_SIZES_NUMBER
}
44 static char * typeNames
[] = {
45 "int_fixed", "uint_fixed", "pointer", "char", "uchar", "short", "ushort",
46 "int", "uint", "long", "ulong", "size_t", "ssize_t", "off_t", "float",
47 "string", "enum", "array", "sequence", "struct", "union", "none" };
50 #define FLOAT_SIZES_NUMBER 7
53 /*****************************************************************************
55 * ltt_eventtype_name : get the name of the event type
59 * GQuark : the name of the event type
60 ****************************************************************************/
62 GQuark
ltt_eventtype_name(LttEventType
*et
)
67 /*****************************************************************************
69 * ltt_eventtype_description : get the description of the event type
73 * char * : the description of the event type
74 ****************************************************************************/
76 gchar
*ltt_eventtype_description(LttEventType
*et
)
78 return et
->description
;
81 /*****************************************************************************
83 * ltt_eventtype_id : get the id of the event type
88 ****************************************************************************/
90 guint8
ltt_eventtype_id(LttEventType
*et
)
95 /*****************************************************************************
97 * ltt_type_name : get the name of the type
101 * GQuark : the name of the type
102 ****************************************************************************/
104 GQuark
ltt_type_name(LttType
*t
)
106 return g_quark_from_static_string(typeNames
[t
->type_class
]);
109 /*****************************************************************************
111 * ltt_field_name : get the name of the field
115 * char * : the name of the type
116 ****************************************************************************/
118 GQuark
ltt_field_name(LttField
*f
)
123 /*****************************************************************************
125 * ltt_type_class : get the type class of the type
129 * LttTypeEnum : the type class of the type
130 ****************************************************************************/
132 LttTypeEnum
ltt_type_class(LttType
*t
)
134 return t
->type_class
;
137 /*****************************************************************************
139 * ltt_type_size : obtain the type size. The size is the number of bytes
140 * for primitive types (INT, UINT, FLOAT, ENUM)
141 * or the size for the unsigned integer length count for
148 * returns 0 if erroneous, and show a critical warning message.
149 ****************************************************************************/
151 guint
ltt_type_size(LttTrace
* trace
, LttType
*t
)
155 switch(t
->type_class
) {
165 if(likely(t
->size
< INT_SIZES_NUMBER
))
166 size
= intSizes
[t
->size
];
171 if(likely(t
->size
< FLOAT_SIZES_NUMBER
))
172 size
= floatSizes
[t
->size
];
196 g_warning("no size known for the type");
200 /*****************************************************************************
202 * ltt_type_element_type : obtain the type of nested elements for arrays
207 * LttType : the type of nested element of array or sequence
208 ****************************************************************************/
210 LttType
*ltt_type_element_type(LttType
*t
)
212 LttType
*element_type
;
215 if(unlikely(t
->type_class
!= LTT_ARRAY
&& t
->type_class
!= LTT_SEQUENCE
))
218 if(t
->type_class
== LTT_ARRAY
)
219 field
= &g_array_index(t
->fields
, LttField
, 0);
221 field
= &g_array_index(t
->fields
, LttField
, 1);
222 element_type
= ltt_field_type(field
);
228 /*****************************************************************************
230 * ltt_type_element_number : obtain the number of elements for enums
234 * unsigned : the number of elements for arrays
235 ****************************************************************************/
236 unsigned ltt_type_element_number(LttType
*t
)
240 if(likely(t
->type_class
== LTT_ENUM
))
241 // Permits non full enums ret = g_hash_table_size(t->enum_map);
242 ret
= (unsigned)(t
->highest_value
- t
->lowest_value
);
247 /*****************************************************************************
249 * ltt_type_member_number : obtain the number of data members for structure
253 * unsigned : the number of members for structure
254 ****************************************************************************/
256 unsigned ltt_type_member_number(LttType
*t
)
260 if(likely(t
->type_class
== LTT_STRUCT
|| t
->type_class
== LTT_UNION
))
261 ret
= t
->fields
->len
;
267 /*****************************************************************************
269 * ltt_enum_string_get : for enumerations, obtain the symbolic string
270 * associated with a value (0 to n - 1 for an
271 * enumeration of n elements)
274 * i : index of the member
276 * char * : symbolic string associated with a value
277 ****************************************************************************/
279 GQuark
ltt_enum_string_get(LttType
*t
, gulong i
)
281 if(likely(t
->type_class
== LTT_ENUM
))
282 return (GQuark
)g_hash_table_lookup(t
->enum_map
, (gpointer
)i
);
287 /*****************************************************************************
289 * ltt_field_element : obtain the field of nested elements for arrays and
294 * LttField * : the field of the nested element
295 ****************************************************************************/
297 LttField
*ltt_field_element(LttField
*f
)
299 LttField
*nest
= NULL
;
301 if(likely(f
->field_type
->type_class
== LTT_ARRAY
||
302 f
->field_type
->type_class
== LTT_SEQUENCE
))
309 /*****************************************************************************
311 * ltt_field_member_by_name : obtain the field of data members for structure
314 * name : name of the field
316 * LttField * : the field of the nested element
317 ****************************************************************************/
319 LttField
*ltt_field_member_by_name(LttField
*f
, GQuark name
)
321 LttField
*field_member
;
323 g_assert(f
->field_type
.type_class
== LTT_STRUCT
||
324 f
->field_type
.type_class
== LTT_UNION
);
326 field_member
= g_datalist_id_get_data(&f
->field_type
.fields_by_name
, name
);
332 /*****************************************************************************
334 * ltt_field_member : obtain the field of data members for structure
337 * i : index of member field
339 * LttField * : the field of the nested element
340 ****************************************************************************/
342 LttField
*ltt_field_member(LttField
*f
, guint i
)
344 LttField
*field_member
;
346 g_assert(f
->field_type
.type_class
== LTT_STRUCT
||
347 f
->field_type
.type_class
== LTT_UNION
);
348 g_assert(i
< f
->field_type
.fields
->len
);
350 field_member
= &g_array_index(f
->field_type
.fields
, LttField
, i
);
355 /*****************************************************************************
357 * ltt_field_type : obtain the type of the field
361 * ltt_tyoe * : the type of field
362 ****************************************************************************/
364 LttType
*ltt_field_type(LttField
*f
)
366 if(unlikely(!f
))return NULL
;
367 return &f
->field_type
;
370 int ltt_field_size(LttField
* f
)
372 if(unlikely(!f
))return 0;
373 return f
->field_size
;
377 /*****************************************************************************
379 * ltt_eventtype_num_fields : get the number of fields of the event
381 * e : an instance of an event type
383 * guint : number of fields
384 ****************************************************************************/
386 guint
ltt_eventtype_num_fields(LttEventType
*event_type
)
388 if(unlikely(!event_type
)) return 0;
390 return event_type
->fields
->len
;
393 /*****************************************************************************
395 * ltt_eventtype_field : get the i th field of the event
397 * e : an instance of an event type
400 * LttField * : The requested field, or NULL
401 ****************************************************************************/
403 LttField
*ltt_eventtype_field(LttEventType
*event_type
, guint i
)
405 if(unlikely(!event_type
)) return NULL
;
407 if(i
>= event_type
->fields
->len
) return NULL
;
409 return &g_array_index(event_type
->fields
, LttField
, i
);
413 /*****************************************************************************
415 * ltt_eventtype_field_by_name : get a field of the event
417 * e : an instance of an event type
420 * LttField * : The requested field, or NULL
421 ****************************************************************************/
423 LttField
*ltt_eventtype_field_by_name(LttEventType
*event_type
, GQuark name
)
425 if(unlikely(!event_type
)) return NULL
;
427 return (LttField
*)g_datalist_id_get_data(&event_type
->fields_by_name
, name
);
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