+extern GQuark
+ LTTV_FILTER_TRACE,
+ LTTV_FILTER_TRACESET,
+ LTTV_FILTER_TRACEFILE,
+ LTTV_FILTER_STATE,
+ LTTV_FILTER_EVENT,
+ LTTV_FILTER_NAME,
+ LTTV_FILTER_CATEGORY,
+ LTTV_FILTER_TIME,
+ LTTV_FILTER_TSC,
+ LTTV_FILTER_PID,
+ LTTV_FILTER_PPID,
+ LTTV_FILTER_C_TIME,
+ LTTV_FILTER_I_TIME,
+ LTTV_FILTER_P_NAME,
+ LTTV_FILTER_EX_MODE,
+ LTTV_FILTER_EX_SUBMODE,
+ LTTV_FILTER_P_STATUS,
+ LTTV_FILTER_CPU;
+
+/**
+ * @enum lttv_expression_op
+ */
+typedef enum _lttv_expression_op
+{
+ LTTV_FIELD_EQ, /** equal */
+ LTTV_FIELD_NE, /** not equal */
+ LTTV_FIELD_LT, /** lower than */
+ LTTV_FIELD_LE, /** lower or equal */
+ LTTV_FIELD_GT, /** greater than */
+ LTTV_FIELD_GE /** greater or equal */
+} lttv_expression_op;
+
+typedef enum _lttv_expression_type
+{
+ LTTV_EXPRESSION,
+ LTTV_SIMPLE_EXPRESSION,
+ LTTV_EXPRESSION_OP,
+ LTTV_UNDEFINED_EXPRESSION
+} lttv_expression_type;
+
+typedef enum _lttv_tree_element {
+ LTTV_TREE_IDLE,
+ LTTV_TREE_NODE,
+ LTTV_TREE_LEAF
+} lttv_tree_element;
+
+typedef struct _lttv_simple_expression
+{
+ char *field_name;
+ lttv_expression_op op;
+ char *value;
+} lttv_simple_expression;
+
+typedef enum _lttv_logical_op {
+ LTTV_LOGICAL_OR = 1, /* 1 */
+ LTTV_LOGICAL_AND = 1<<1, /* 2 */
+ LTTV_LOGICAL_NOT = 1<<2, /* 4 */
+ LTTV_LOGICAL_XOR = 1<<3 /* 8 */
+} lttv_logical_op;
+
+/*
+ * Ah .. that's my tree
+ */
+//typedef struct _lttv_expression
+//{
+// gboolean simple_expression;
+// int op;
+// lttv_expression_type type;
+// union {
+// struct lttv_expression *e;
+ // lttv_field_relation *se; /* --> simple expression */
+// } e;
+//} lttv_expression;
+
+typedef struct _lttv_expression {
+ lttv_expression_type type;
+ union {
+ lttv_simple_expression *se;
+ int op;
+ } e;
+} lttv_expression;
+
+typedef struct _lttv_filter_tree {
+// lttv_expression* node;
+ int node;
+ lttv_tree_element left;
+ lttv_tree_element right;
+ union {
+ struct lttv_filter_tree* t;
+ lttv_simple_expression* leaf;
+ } l_child;
+ union {
+ struct lttv_filter_tree* t;
+ lttv_simple_expression* leaf;
+ } r_child;
+} lttv_filter_tree;
+