/* This file is part of the Linux Trace Toolkit viewer
- * Copyright (C) 2003-2004 Michel Dagenais
+ * Copyright (C) 2003-2005 Michel Dagenais
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License Version 2 as
larger or equal to a specified value.
*/
+/*
+ * YET TO BE ANSWERED
+ * - the exists an other lttv_filter which conflicts with this one
+ */
+
+/*
+ * TODO
+ * - refine switch of expression in multiple uses functions
+ * - remove the idle expressions in the tree ****
+ * - add the current simple expression to the tree
+ */
+
#include <lttv/filter.h>
/*
path(component...) -> field
*/
+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;
+
+LttvSimpleExpression*
+lttv_simple_expression_new() {
+
+}
+
+/**
+ * Assign a new tree for the current expression
+ * or sub expression
+ * @return pointer of LttvFilter
+ */
+LttvFilter* lttv_filter_tree_new() {
+ LttvFilter* tree;
+
+ tree = g_new(LttvFilter,1);
+ tree->node = 0; //g_new(lttv_expression,1);
+// tree->node->type = LTTV_UNDEFINED_EXPRESSION;
+ tree->left = LTTV_TREE_IDLE;
+ tree->right = LTTV_TREE_IDLE;
+
+ return tree;
+}
+
+/**
+ * Destroys the tree and his sub-trees
+ * @param tree Tree which must be destroyed
+ */
+void lttv_filter_tree_destroy(LttvFilter* tree) {
+
+ if(tree->left == LTTV_TREE_LEAF) g_free(tree->l_child.leaf);
+ else if(tree->left == LTTV_TREE_NODE) lttv_filter_tree_destroy(tree->l_child.t);
+
+ if(tree->right == LTTV_TREE_LEAF) g_free(tree->r_child.leaf);
+ else if(tree->right == LTTV_TREE_NODE) lttv_filter_tree_destroy(tree->r_child.t);
+
+ g_free(tree->node);
+ g_free(tree);
+}
+
+LttvFilter*
+lttv_filter_clone(LttvFilter* tree) {
+
+ LttvFilter* newtree = lttv_filter_tree_new();
+
+ /*
+ * TODO : Copy tree into new tree
+ */
+
+ return newtree;
+
+}
+
+void
+lttv_filter_tree_add_node(GPtrArray* stack, LttvFilter* subtree, LttvLogicalOp op) {
+
+ LttvFilter* t1 = NULL;
+ LttvFilter* t2 = NULL;
+
+ t1 = (LttvFilter*)g_ptr_array_index(stack,stack->len-1);
+ while(t1->right != LTTV_TREE_IDLE) t1 = t1->r_child.t;
+ t2 = lttv_filter_tree_new();
+ t2->node = op;
+ if(subtree != NULL) {
+ t2->left = LTTV_TREE_NODE;
+ t2->l_child.t = subtree;
+ subtree = NULL;
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = t2;
+ } else {
+// a_simple_expression->value = a_field_component->str;
+// a_field_component = g_string_new("");
+ t2->left = LTTV_TREE_LEAF;
+// t2->l_child.leaf = a_simple_expression;
+// a_simple_expression = g_new(lttv_simple_expression,1);
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = t2;
+ }
+
+}
+
+/**
+ * Parse through filtering field hierarchy as specified
+ * by user. This function compares each value to
+ * predetermined quarks
+ * @param fp The field path list
+ * @return success/failure of operation
+ */
+gboolean
+parse_field_path(GPtrArray* fp) {
+
+ GString* f = NULL;
+ if(fp->len < 2) return FALSE;
+ g_assert(f=g_ptr_array_index(fp,0)); //list_first(fp)->data;
+
+ if(g_quark_try_string(f->str) == LTTV_FILTER_EVENT) {
+ f=g_ptr_array_index(fp,1);
+ if(g_quark_try_string(f->str) == LTTV_FILTER_NAME) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_CATEGORY) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_TIME) {
+ // offset = &((LttEvent*)NULL)->event_time);
+ }
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_TSC) {
+ // offset = &((LttEvent*)NULL)->event_cycle_count);
+ }
+ else { /* core.xml specified options */
+
+ }
+ } else if(g_quark_try_string(f->str) == LTTV_FILTER_TRACEFILE) {
+ f=g_ptr_array_index(fp,1);
+ if(g_quark_try_string(f->str) == LTTV_FILTER_NAME) {}
+ else return FALSE;
+ } else if(g_quark_try_string(f->str) == LTTV_FILTER_TRACE) {
+ f=g_ptr_array_index(fp,1);
+ if(g_quark_try_string(f->str) == LTTV_FILTER_NAME) {}
+ else return FALSE;
+
+ } else if(g_quark_try_string(f->str) == LTTV_FILTER_STATE) {
+ f=g_ptr_array_index(fp,1);
+ if(g_quark_try_string(f->str) == LTTV_FILTER_PID) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_PPID) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_C_TIME) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_I_TIME) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_P_NAME) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_EX_MODE) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_EX_SUBMODE) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_P_STATUS) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_CPU) {}
+ else return FALSE;
+
+ } else {
+ g_warning("Unrecognized field in filter string");
+ return FALSE;
+ }
+ return TRUE;
+}
+
/**
* Add an filtering option to the current tree
* @param expression Current expression to parse
unsigned i;
+
}
* @param t pointer to the current LttvTrace
* @return the current lttv_filter or NULL if error
*/
-lttv_filter*
-lttv_filter_new(char *expression, LttvTraceState *tfs) {
-
- /* test */
- char* field = "cpu";
- LttEventType *et;
-
- // LttField* a_ltt_field = NULL;
- // a_ltt_field = find_field(NULL,field);
+LttvFilter*
+lttv_filter_new(char *expression, LttvTraceState *tcs) {
- // g_print("%s\n",a_ltt_field->field_type->type_name);
+ g_print("filter::lttv_filter_new()\n"); /* debug */
- return NULL;
-
unsigned
i,
- p=0, /* parenthesis nesting value */
+ p_nesting=0, /* parenthesis nesting value */
b=0; /* current breakpoint in expression string */
-
- gpointer tree = NULL;
-
- /* temporary values */
- GString *current_option = g_string_new("");
- lttv_simple_expression a_simple_expression;
-
- g_print("filter::lttv_filter_new()\n"); /* debug */
- /*
- * 1. parse expression
- * 2. construct binary tree
- * 3. return corresponding filter
- */
+ /* trees */
+ LttvFilter
+ *tree = lttv_filter_tree_new(), /* main tree */
+ *subtree = NULL, /* buffer for subtrees */
+ *t1, /* buffer #1 */
+ *t2; /* buffer #2 */
/*
- * Binary tree memory allocation
- * - based upon a preliminary block size
+ * Tree Stack
+ * each element of the list
+ * is a sub tree created
+ * by the use of parenthesis in the
+ * global expression. The final tree
+ * will be the one left at the root of
+ * the list
*/
- gulong size = (strlen(expression)/AVERAGE_EXPRESSION_LENGTH)*MAX_FACTOR;
- tree = g_malloc(size*sizeof(lttv_filter_tree));
+ GPtrArray *tree_stack = g_ptr_array_new();
+ g_ptr_array_add( tree_stack,(gpointer) tree );
+
+ /* temporary values */
+ GString *a_field_component = g_string_new("");
+ GPtrArray *a_field_path = NULL;
+ LttvSimpleExpression* a_simple_expression = g_new(LttvSimpleExpression,1);
+
/*
* Parse entire expression and construct
* the binary tree. There are two steps
* in browsing that string
- * 1. finding boolean ops ( &,|,^,! ) and parenthesis
+ * 1. finding boolean ops " &,|,^,! " and parenthesis " {,(,[,],),} "
* 2. finding simple expressions
- * - field path
+ * - field path ( separated by dots )
* - op ( >, <, =, >=, <=, !=)
- * - value
+ * - value ( integer, string ... )
+ * To spare computing time, the whole
+ * string is parsed in this loop for a
+ * O(n) complexity order.
+ *
+ * When encountering logical op &,|,^
+ * 1. parse the last value if any
+ * 2. create a new tree
+ * 3. add the expression (simple exp, or exp (subtree)) to the tree
+ * 4. concatenate this tree with the current tree on top of the stack
+ * When encountering math ops >,>=,<,<=,=,!=
+ * 1. add to op to the simple expression
+ * 2. concatenate last field component to field path
+ * When encountering concatening ops .
+ * 1. concatenate last field component to field path
+ * When encountering opening parenthesis (,{,[
+ * 1. create a new subtree on top of tree stack
+ * When encountering closing parenthesis ),},]
+ * 1. add the expression on right child of the current tree
+ * 2. the subtree is completed, allocate a new subtree
+ * 3. pop the tree value from the tree stack
*/
+
+ a_field_path = g_ptr_array_new();
+ g_ptr_array_set_size(a_field_path,2); /* by default, recording 2 field expressions */
+
for(i=0;i<strlen(expression);i++) {
- g_print("%s\n",current_option->str);
+// g_print("%s\n",a_field_component->str);
+ g_print("%c ",expression[i]);
+// g_print("switch:%c -->subtree:%p\n",expression[i],subtree);
switch(expression[i]) {
/*
* logical operators
*/
case '&': /* and */
+ t1 = (LttvFilter*)g_ptr_array_index(tree_stack,tree_stack->len-1);
+ while(t1->right != LTTV_TREE_IDLE) t1 = t1->r_child.t;
+ t2 = lttv_filter_tree_new();
+ t2->node = LTTV_LOGICAL_AND;
+ if(subtree != NULL) {
+ t2->left = LTTV_TREE_NODE;
+ t2->l_child.t = subtree;
+ subtree = NULL;
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = t2;
+ } else {
+ a_simple_expression->value = a_field_component->str;
+ a_field_component = g_string_new("");
+ t2->left = LTTV_TREE_LEAF;
+ t2->l_child.leaf = a_simple_expression;
+ a_simple_expression = g_new(LttvSimpleExpression,1);
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = t2;
+ }
+
+ break;
case '|': /* or */
+ t1 = (LttvFilter*)g_ptr_array_index(tree_stack,tree_stack->len-1);
+ while(t1->right != LTTV_TREE_IDLE) t1 = t1->r_child.t;
+ t2 = lttv_filter_tree_new();
+ t2->node = LTTV_LOGICAL_OR;
+ if(subtree != NULL) {
+ t2->left = LTTV_TREE_NODE;
+ t2->l_child.t = subtree;
+ subtree = NULL;
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = t2;
+ } else {
+ a_simple_expression->value = a_field_component->str;
+ a_field_component = g_string_new("");
+ t2->left = LTTV_TREE_LEAF;
+ t2->l_child.leaf = a_simple_expression;
+ a_simple_expression = g_new(LttvSimpleExpression,1);
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = t2;
+ }
+ break;
case '^': /* xor */
- current_option = g_string_new("");
+ t1 = (LttvFilter*)g_ptr_array_index(tree_stack,tree_stack->len-1);
+ while(t1->right != LTTV_TREE_IDLE) t1 = t1->r_child.t;
+ t2 = lttv_filter_tree_new();
+ t2->node = LTTV_LOGICAL_XOR;
+ if(subtree != NULL) {
+ t2->left = LTTV_TREE_NODE;
+ t2->l_child.t = subtree;
+ subtree = NULL;
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = t2;
+ } else {
+ a_simple_expression->value = a_field_component->str;
+ a_field_component = g_string_new("");
+ t2->left = LTTV_TREE_LEAF;
+ t2->l_child.leaf = a_simple_expression;
+ a_simple_expression = g_new(LttvSimpleExpression,1);
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = t2;
+ }
break;
case '!': /* not, or not equal (math op) */
if(expression[i+1] == '=') { /* != */
- a_simple_expression.op = LTTV_FIELD_NE;
+ a_simple_expression->op = LTTV_FIELD_NE;
i++;
+ g_ptr_array_add( a_field_path,(gpointer) a_field_component );
+ a_field_component = g_string_new("");
} else { /* ! */
- g_print("%s\n",current_option);
- current_option = g_string_new("");
+ // g_print("%s\n",a_field_component);
+ // a_field_component = g_string_new("");
+ t1 = (LttvFilter*)g_ptr_array_index(tree_stack,tree_stack->len-1);
+ while(t1->right != LTTV_TREE_IDLE) t1 = t1->r_child.t;
+ t2 = lttv_filter_tree_new();
+ t2->node = LTTV_LOGICAL_NOT;
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = t2;
}
break;
case '(': /* start of parenthesis */
- p++; /* incrementing parenthesis nesting value */
+ case '[':
+ case '{':
+ p_nesting++; /* incrementing parenthesis nesting value */
+ t1 = lttv_filter_tree_new();
+ g_ptr_array_add( tree_stack,(gpointer) t1 );
break;
case ')': /* end of parenthesis */
- p--; /* decrementing parenthesis nesting value */
+ case ']':
+ case '}':
+ p_nesting--; /* decrementing parenthesis nesting value */
+ if(p_nesting<0 || tree_stack->len<2) {
+ g_warning("Wrong filtering options, the string\n\"%s\"\n\
+ is not valid due to parenthesis incorrect use",expression);
+ return NULL;
+ }
+
+ g_assert(tree_stack->len>0);
+ if(subtree != NULL) {
+ t1 = g_ptr_array_index(tree_stack,tree_stack->len-1);
+ while(t1->right != LTTV_TREE_IDLE && t1->right != LTTV_TREE_LEAF) {
+ g_assert(t1!=NULL && t1->r_child.t != NULL);
+ t1 = t1->r_child.t;
+ }
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = subtree;
+ subtree = g_ptr_array_index(tree_stack,tree_stack->len-1);
+ g_ptr_array_remove_index(tree_stack,tree_stack->len-1);
+ } else {
+ a_simple_expression->value = a_field_component->str;
+ a_field_component = g_string_new("");
+ t1 = g_ptr_array_index(tree_stack,tree_stack->len-1);
+ while(t1->right != LTTV_TREE_IDLE) t1 = t1->r_child.t;
+ t1->right = LTTV_TREE_LEAF;
+ t1->r_child.leaf = a_simple_expression;
+ a_simple_expression = g_new(LttvSimpleExpression,1);
+ subtree = g_ptr_array_index(tree_stack,tree_stack->len-1);
+ g_assert(subtree != NULL);
+ g_ptr_array_remove_index(tree_stack,tree_stack->len-1);
+ }
break;
/*
case '<': /* lower, lower or equal */
if(expression[i+1] == '=') { /* <= */
i++;
- a_simple_expression.op = LTTV_FIELD_LE;
- } else a_simple_expression.op = LTTV_FIELD_LT;
+ a_simple_expression->op = LTTV_FIELD_LE;
+ } else a_simple_expression->op = LTTV_FIELD_LT;
+ g_ptr_array_add( a_field_path,(gpointer) a_field_component );
+ a_field_component = g_string_new("");
break;
case '>': /* higher, higher or equal */
if(expression[i+1] == '=') { /* >= */
i++;
- a_simple_expression.op = LTTV_FIELD_GE;
- } else a_simple_expression.op = LTTV_FIELD_GT;
+ a_simple_expression->op = LTTV_FIELD_GE;
+ } else a_simple_expression->op = LTTV_FIELD_GT;
+ g_ptr_array_add( a_field_path,(gpointer) a_field_component );
+ a_field_component = g_string_new("");
break;
case '=': /* equal */
- a_simple_expression.op = LTTV_FIELD_EQ;
+ a_simple_expression->op = LTTV_FIELD_EQ;
+ g_ptr_array_add( a_field_path,(gpointer) a_field_component );
+ a_field_component = g_string_new("");
+ break;
+ /*
+ * Field concatening caracter
+ */
+ case '.': /* dot */
+ g_ptr_array_add( a_field_path,(gpointer) a_field_component );
+ a_field_component = g_string_new("");
break;
default: /* concatening current string */
- g_string_append_c(current_option,expression[i]);
+ g_string_append_c(a_field_component,expression[i]);
}
}
+ g_print("subtree:%p, tree:%p, t1:%p, t2:%p\n",subtree,tree,t1,t2);
+ g_print("stack size: %i\n",tree_stack->len);
-
- if( p>0 ) {
+ /*
+ * Preliminary check to see
+ * if tree was constructed correctly
+ */
+ if( p_nesting>0 ) {
g_warning("Wrong filtering options, the string\n\"%s\"\n\
is not valid due to parenthesis incorrect use",expression);
return NULL;
}
+
+ if(tree_stack->len != 1) /* only root tree should remain */
+ return NULL;
+
+ /* processing last element of expression */
+ t1 = g_ptr_array_index(tree_stack,tree_stack->len-1);
+ while(t1->right != LTTV_TREE_IDLE) t1 = t1->r_child.t;
+ if(subtree != NULL) { /* add the subtree */
+ t1->right = LTTV_TREE_NODE;
+ t1->r_child.t = subtree;
+ subtree = NULL;
+ } else { /* add a leaf */
+ a_simple_expression->value = a_field_component->str;
+ a_field_component = g_string_new("");
+ t1->right = LTTV_TREE_LEAF;
+ t1->r_child.leaf = a_simple_expression;
+ /*
+ * FIXME: is it really necessary to reallocate
+ * LttvSimpleExpression at this point ??
+ */
+ a_simple_expression = g_new(LttvSimpleExpression,1);
+ }
+
+ g_assert(tree != NULL);
+ g_assert(subtree == NULL);
+
+ lttv_filter_tracefile(tree,NULL);
+
+ return tree;
+
+}
+
+void
+lttv_filter_destroy(LttvFilter* filter) {
+
}
/**
* @return success/failure of operation
*/
gboolean
-lttv_filter_tracefile(lttv_filter *filter, LttvTrace *tracefile) {
+lttv_filter_tracefile(LttvFilter *filter, LttTracefile *tracefile) {
+
+ /*
+ * Each tree is parsed in inorder.
+ * This way, it's possible to apply the left filter of the
+ * tree, then decide whether or not the right branch should
+ * be parsed depending on the linking logical operator
+ *
+ * As for the filtering structure, since we are trying
+ * to remove elements from the trace, it might be better
+ * managing an array of all items to be removed ..
+ */
+
+ g_print("node:%p lchild:%p rchild:%p\n",filter,filter->l_child.t,filter->r_child.t);
+ g_print("node type%i\n",filter->node);
+ if(filter->left == LTTV_TREE_NODE) lttv_filter_tracefile(filter->l_child.t,NULL);
+ else if(filter->left == LTTV_TREE_LEAF) {
+ g_assert(filter->l_child.leaf->value != NULL);
+ g_print("%p: left is qqch %i %s\n",filter,filter->l_child.leaf->op,filter->l_child.leaf->value);
+ }
+ if(filter->right == LTTV_TREE_NODE) lttv_filter_tracefile(filter->r_child.t,NULL);
+ else if(filter->right == LTTV_TREE_LEAF) {
+ g_assert(filter->r_child.leaf->value != NULL);
+ g_print("%p: right is qqch %i %s\n",filter,filter->r_child.leaf->op,filter->r_child.leaf->value);
+ }
+
+ /* test */
+/* int i, nb;
+ char *f_name, *e_name;
+
+ char* field = "cpu";
+
+ LttvTraceHook h;
+
+ LttEventType *et;
+
+ LttType *t;
+
+ GString *fe_name = g_string_new("");
+
+ nb = ltt_trace_eventtype_number(tcs->parent.t);
+ g_print("NB:%i\n",nb);
+ for(i = 0 ; i < nb ; i++) {
+ et = ltt_trace_eventtype_get(tcs->parent.t, i);
+ e_name = ltt_eventtype_name(et);
+ f_name = ltt_facility_name(ltt_eventtype_facility(et));
+ g_string_printf(fe_name, "%s.%s", f_name, e_name);
+ g_print("facility:%s and event:%s\n",f_name,e_name);
+ }
+ */
+}
+
+gboolean
+lttv_filter_tracestate(LttvFilter *filter, LttvTraceState *tracestate) {
}
* @return success/failure of operation
*/
gboolean
-lttv_filter_event(lttv_filter *filter, LttEvent *event) {
+lttv_filter_event(LttvFilter *filter, LttEvent *event) {
+
+}
+
+/**
+ * Initializes the filter module and specific values
+ */
+static void module_init()
+{
+
+ /*
+ * Quarks initialization
+ * for hardcoded filtering options
+ *
+ * TODO: traceset has no yet been defined
+ */
+
+ /* top fields */
+ LTTV_FILTER_EVENT = g_quark_from_string("event");
+ LTTV_FILTER_TRACE = g_quark_from_string("trace");
+ LTTV_FILTER_TRACESET = g_quark_from_string("traceset");
+ LTTV_FILTER_STATE = g_quark_from_string("state");
+ LTTV_FILTER_TRACEFILE = g_quark_from_string("tracefile");
+
+ /* event.name, tracefile.name, trace.name */
+ LTTV_FILTER_NAME = g_quark_from_string("name");
+
+ /* event sub fields */
+ LTTV_FILTER_CATEGORY = g_quark_from_string("category");
+ LTTV_FILTER_TIME = g_quark_from_string("time");
+ LTTV_FILTER_TSC = g_quark_from_string("tsc");
+
+ /* state sub fields */
+ LTTV_FILTER_PID = g_quark_from_string("pid");
+ LTTV_FILTER_PPID = g_quark_from_string("ppid");
+ LTTV_FILTER_C_TIME = g_quark_from_string("creation_time");
+ LTTV_FILTER_I_TIME = g_quark_from_string("insertion_time");
+ LTTV_FILTER_P_NAME = g_quark_from_string("process_name");
+ LTTV_FILTER_EX_MODE = g_quark_from_string("execution_mode");
+ LTTV_FILTER_EX_SUBMODE = g_quark_from_string("execution_submode");
+ LTTV_FILTER_P_STATUS = g_quark_from_string("process_status");
+ LTTV_FILTER_CPU = g_quark_from_string("cpu");
+
+}
+/**
+ * Destroys the filter module and specific values
+ */
+static void module_destroy()
+{
}
+
+
+LTTV_MODULE("filter", "Filters traceset and events", \
+ "Filters traceset and events specifically to user input", \
+ module_init, module_destroy)
+
+
+
projects / lttv.git / blobdiff