da2ce25631b37263b8995ebfe0387b160e1da217
1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Michel Dagenais
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License Version 2 as
6 * published by the Free Software Foundation;
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 #include <lttv/traceset.h>
23 #include <lttv/tracecontext.h>
24 #include <lttv/state.h>
25 #include <lttv/module.h>
27 #include <ltt/event.h>
30 /* A filter expression consists in nested AND, OR and NOT expressions
31 involving boolean relation (>, >=, =, !=, <, <=) between event fields and
32 specific values. It is compiled into an efficient data structure which
33 is used in functions to check if a given event or tracefile satisfies the
36 The grammar for filters is:
40 expression = "(" expression ")" | "!" expression |
41 expression "&&" expression | expression "||" expression |
44 simpleExpression = fieldPath op value
46 fieldPath = fieldComponent [ "." fieldPath ]
48 fieldComponent = name [ "[" integer "]" ]
50 value = integer | double | string
56 * @brief Structures and their fields
58 * the LttvFieldType enum consists on
59 * all the hardcoded structures and
60 * their appropriate fields on which
61 * filters can be applied.
66 LTTV_FILTER_TRACEFILE
,
79 LTTV_FILTER_EX_SUBMODE
,
85 * @enum LttvExpressionOp
87 typedef enum _LttvExpressionOp
89 LTTV_FIELD_EQ
, /** equal */
90 LTTV_FIELD_NE
, /** not equal */
91 LTTV_FIELD_LT
, /** lower than */
92 LTTV_FIELD_LE
, /** lower or equal */
93 LTTV_FIELD_GT
, /** greater than */
94 LTTV_FIELD_GE
/** greater or equal */
98 * @enum LttvTreeElement
99 * @brief element types for the tree nodes
101 * LttvTreeElement defines the possible
102 * types of nodes which build the LttvFilterTree.
104 typedef enum _LttvTreeElement
{
105 LTTV_TREE_IDLE
, /** this node does nothing */
106 LTTV_TREE_NODE
, /** this node contains a logical operator */
107 LTTV_TREE_LEAF
/** this node is a leaf and contains a simple expression */
111 * @enum LttvSimpleExpression
112 * @brief simple expression structure
114 * An LttvSimpleExpression is the base
115 * of all filtering operations. It also
116 * populates the leaves of the
117 * LttvFilterTree. Each expression
118 * consists basically in a structure
119 * field, an operator and a specific
122 typedef struct _LttvSimpleExpression
125 // LttvExpressionOp op;
128 } LttvSimpleExpression
;
131 * @enum LttvLogicalOp
132 * @brief logical operators
134 * Contains the possible values taken
135 * by logical operator used to link
136 * simple expression. Values are
137 * AND, OR, XOR or NOT
139 typedef enum _LttvLogicalOp
{
140 LTTV_LOGICAL_OR
= 1, /* 1 */
141 LTTV_LOGICAL_AND
= 1<<1, /* 2 */
142 LTTV_LOGICAL_NOT
= 1<<2, /* 4 */
143 LTTV_LOGICAL_XOR
= 1<<3 /* 8 */
147 * @struct LttvFilterTree
148 * The filtering tree is used to represent the
149 * expression string in its entire hierarchy
150 * composed of simple expressions and logical
153 typedef struct _LttvFilterTree
{
154 int node
; /** value of LttvLogicalOp */
155 LttvTreeElement left
;
156 LttvTreeElement right
;
158 struct LttvFilter
* t
;
159 LttvSimpleExpression
* leaf
;
162 struct LttvFilter
* t
;
163 LttvSimpleExpression
* leaf
;
168 * @struct lttv_filter
169 * Contains a binary tree of filtering options along
170 * with the expression itself.
172 typedef struct _LttvFilter
{
174 LttvFilterTree
*head
;
178 * General Data Handling functions
181 LttvSimpleExpression
* lttv_simple_expression_new();
183 void lttv_filter_tree_add_node(GPtrArray
* stack
, LttvFilterTree
* subtree
, LttvLogicalOp op
);
185 gboolean
parse_field_path(GPtrArray
* fp
, LttvSimpleExpression
* se
);
187 gboolean
parse_simple_expression(GString
* expression
);
190 * Logical operators functions
193 gboolean
lttv_apply_op_eq_uint64(guint64 v1
, guint64 v2
);
194 gboolean
lttv_apply_op_eq_uint32(guint32 v1
, guint32 v2
);
195 gboolean
lttv_apply_op_eq_uint16(guint16 v1
, guint16 v2
);
196 gboolean
lttv_apply_op_eq_double(double v1
, double v2
);
197 gboolean
lttv_apply_op_eq_string(char* v1
, char* v2
);
199 gboolean
lttv_apply_op_ne_uint64(guint64 v1
, guint64 v2
);
200 gboolean
lttv_apply_op_ne_uint32(guint32 v1
, guint32 v2
);
201 gboolean
lttv_apply_op_ne_uint16(guint16 v1
, guint16 v2
);
202 gboolean
lttv_apply_op_ne_double(double v1
, double v2
);
203 gboolean
lttv_apply_op_ne_string(char* v1
, char* v2
);
205 gboolean
lttv_apply_op_lt_uint64(guint64 v1
, guint64 v2
);
206 gboolean
lttv_apply_op_lt_uint32(guint32 v1
, guint32 v2
);
207 gboolean
lttv_apply_op_lt_uint16(guint16 v1
, guint16 v2
);
208 gboolean
lttv_apply_op_lt_double(double v1
, double v2
);
210 gboolean
lttv_apply_op_le_uint64(guint64 v1
, guint64 v2
);
211 gboolean
lttv_apply_op_le_uint32(guint32 v1
, guint32 v2
);
212 gboolean
lttv_apply_op_le_uint16(guint16 v1
, guint16 v2
);
213 gboolean
lttv_apply_op_le_double(double v1
, double v2
);
215 gboolean
lttv_apply_op_gt_uint64(guint64 v1
, guint64 v2
);
216 gboolean
lttv_apply_op_gt_uint32(guint32 v1
, guint32 v2
);
217 gboolean
lttv_apply_op_gt_uint16(guint16 v1
, guint16 v2
);
218 gboolean
lttv_apply_op_gt_double(double v1
, double v2
);
220 gboolean
lttv_apply_op_ge_uint64(guint64 v1
, guint64 v2
);
221 gboolean
lttv_apply_op_ge_uint32(guint32 v1
, guint32 v2
);
222 gboolean
lttv_apply_op_ge_uint16(guint16 v1
, guint16 v2
);
223 gboolean
lttv_apply_op_ge_double(double v1
, double v2
);
229 LttvFilterTree
* lttv_filter_tree_clone(LttvFilterTree
* tree
);
231 LttvFilter
* lttv_filter_clone(LttvFilter
* filter
);
234 * Constructors/Destructors
238 LttvFilter
*lttv_filter_new(char *expression
, LttvTraceState
*tfs
);
240 void lttv_filter_destroy(LttvFilter
* filter
);
243 LttvFilterTree
* lttv_filter_tree_new();
245 void lttv_filter_tree_destroy(LttvFilterTree
* tree
);
251 * These hook functions will be the one called when filtering
252 * an event, a trace, a state, etc.
255 /* Check if the tracefile or event satisfies the filter. The arguments are
256 declared as void * to allow these functions to be used as hooks. */
258 gboolean
lttv_filter_tracefile(LttvFilter
*filter
, LttTracefile
*tracefile
);
260 gboolean
lttv_filter_tracestate(LttvFilter
*filter
, LttvTraceState
*tracestate
);
262 gboolean
lttv_filter_event(LttvFilter
*filter
, LttEvent
*event
);
This page took 0.06298 seconds and 4 git commands to generate.