Python bindings: add has_intersection property to TraceCollection
[babeltrace.git] / types / array.c
index 0bb141ce33e14cf3ba2ca12858e734535f3856a4..e4b43d8b5fe692f44eee37b11c7947229ca6356a 100644 (file)
@@ -3,7 +3,9 @@
  *
  * BabelTrace - Array Type Converter
  *
- * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
+ *
+ * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
  */
 
 #include <babeltrace/compiler.h>
 #include <babeltrace/format.h>
+#include <babeltrace/types.h>
 #include <inttypes.h>
 
 static
-struct definition *_array_definition_new(struct declaration *declaration,
+struct bt_definition *_array_definition_new(struct bt_declaration *declaration,
                        struct definition_scope *parent_scope,
-                       GQuark field_name, int index);
+                       GQuark field_name, int index, const char *root_name);
 static
-void _array_definition_free(struct definition *definition);
+void _array_definition_free(struct bt_definition *definition);
 
-int array_rw(struct stream_pos *pos, struct definition *definition)
+int bt_array_rw(struct bt_stream_pos *pos, struct bt_definition *definition)
 {
        struct definition_array *array_definition =
                container_of(definition, struct definition_array, p);
@@ -38,7 +49,7 @@ int array_rw(struct stream_pos *pos, struct definition *definition)
 
        /* No need to align, because the first field will align itself. */
        for (i = 0; i < array_declaration->len; i++) {
-               struct definition *field =
+               struct bt_definition *field =
                        g_ptr_array_index(array_definition->elems, i);
                ret = generic_rw(pos, field);
                if (ret)
@@ -48,33 +59,32 @@ int array_rw(struct stream_pos *pos, struct definition *definition)
 }
 
 static
-void _array_declaration_free(struct declaration *declaration)
+void _array_declaration_free(struct bt_declaration *declaration)
 {
        struct declaration_array *array_declaration =
                container_of(declaration, struct declaration_array, p);
 
-       free_declaration_scope(array_declaration->scope);
-       declaration_unref(array_declaration->elem);
+       bt_free_declaration_scope(array_declaration->scope);
+       bt_declaration_unref(array_declaration->elem);
        g_free(array_declaration);
 }
 
 struct declaration_array *
-       array_declaration_new(size_t len,
-                             struct declaration *elem_declaration,
+       bt_array_declaration_new(size_t len,
+                             struct bt_declaration *elem_declaration,
                              struct declaration_scope *parent_scope)
 {
        struct declaration_array *array_declaration;
-       struct declaration *declaration;
+       struct bt_declaration *declaration;
 
        array_declaration = g_new(struct declaration_array, 1);
        declaration = &array_declaration->p;
        array_declaration->len = len;
-       declaration_ref(elem_declaration);
+       bt_declaration_ref(elem_declaration);
        array_declaration->elem = elem_declaration;
-       array_declaration->scope = new_declaration_scope(parent_scope);
+       array_declaration->scope = bt_new_declaration_scope(parent_scope);
        declaration->id = CTF_TYPE_ARRAY;
-       /* No need to align the array, the first element will align itself */
-       declaration->alignment = 1;
+       declaration->alignment = elem_declaration->alignment;
        declaration->declaration_free = _array_declaration_free;
        declaration->definition_new = _array_definition_new;
        declaration->definition_free = _array_definition_free;
@@ -83,72 +93,156 @@ struct declaration_array *
 }
 
 static
-struct definition *
-       _array_definition_new(struct declaration *declaration,
+struct bt_definition *
+       _array_definition_new(struct bt_declaration *declaration,
                              struct definition_scope *parent_scope,
-                             GQuark field_name, int index)
+                             GQuark field_name, int index, const char *root_name)
 {
        struct declaration_array *array_declaration =
                container_of(declaration, struct declaration_array, p);
        struct definition_array *array;
-       uint64_t i;
+       int ret;
+       int i;
 
        array = g_new(struct definition_array, 1);
-       declaration_ref(&array_declaration->p);
+       bt_declaration_ref(&array_declaration->p);
        array->p.declaration = declaration;
        array->declaration = array_declaration;
        array->p.ref = 1;
-       array->p.index = index;
+       /*
+        * Use INT_MAX order to ensure that all fields of the parent
+        * scope are seen as being prior to this scope.
+        */
+       array->p.index = root_name ? INT_MAX : index;
        array->p.name = field_name;
-       array->p.path = new_definition_path(parent_scope, field_name);
-       array->scope = new_definition_scope(parent_scope, field_name);
+       array->p.path = bt_new_definition_path(parent_scope, field_name, root_name);
+       array->p.scope = bt_new_definition_scope(parent_scope, field_name, root_name);
+       ret = bt_register_field_definition(field_name, &array->p,
+                                       parent_scope);
+       assert(!ret);
+       array->string = NULL;
+       array->elems = NULL;
+
+       if (array_declaration->elem->id == CTF_TYPE_INTEGER) {
+               struct declaration_integer *integer_declaration =
+                       container_of(array_declaration->elem, struct declaration_integer, p);
+
+               if (integer_declaration->encoding == CTF_STRING_UTF8
+                     || integer_declaration->encoding == CTF_STRING_ASCII) {
+
+                       array->string = g_string_new("");
+               }
+       }
+
        array->elems = g_ptr_array_sized_new(array_declaration->len);
        g_ptr_array_set_size(array->elems, array_declaration->len);
        for (i = 0; i < array_declaration->len; i++) {
-               struct definition **field;
+               struct bt_definition **field;
                GString *str;
                GQuark name;
 
                str = g_string_new("");
-               g_string_printf(str, "[%" PRIu64 "]", i);
+               g_string_printf(str, "[%u]", (unsigned int) i);
                name = g_quark_from_string(str->str);
                (void) g_string_free(str, TRUE);
 
-               field = (struct definition **) &g_ptr_array_index(array->elems, i);
+               field = (struct bt_definition **) &g_ptr_array_index(array->elems, i);
                *field = array_declaration->elem->definition_new(array_declaration->elem,
-                                         array->scope,
-                                         name, i);
+                                         array->p.scope,
+                                         name, i, NULL);
+               if (!*field)
+                       goto error;
        }
+
        return &array->p;
+
+error:
+       for (i--; i >= 0; i--) {
+               struct bt_definition *field;
+
+               field = g_ptr_array_index(array->elems, i);
+               field->declaration->definition_free(field);
+       }
+       (void) g_ptr_array_free(array->elems, TRUE);
+       bt_free_definition_scope(array->p.scope);
+       bt_declaration_unref(array->p.declaration);
+       g_free(array);
+       return NULL;
 }
 
 static
-void _array_definition_free(struct definition *definition)
+void _array_definition_free(struct bt_definition *definition)
 {
        struct definition_array *array =
                container_of(definition, struct definition_array, p);
        uint64_t i;
 
-       for (i = 0; i < array->elems->len; i++) {
-               struct definition *field;
+       if (array->string)
+               (void) g_string_free(array->string, TRUE);
+       if (array->elems) {
+               for (i = 0; i < array->elems->len; i++) {
+                       struct bt_definition *field;
 
-               field = g_ptr_array_index(array->elems, i);
-               field->declaration->definition_free(field);
+                       field = g_ptr_array_index(array->elems, i);
+                       field->declaration->definition_free(field);
+               }
+               (void) g_ptr_array_free(array->elems, TRUE);
        }
-       (void) g_ptr_array_free(array->elems, TRUE);
-       free_definition_scope(array->scope);
-       declaration_unref(array->p.declaration);
+       bt_free_definition_scope(array->p.scope);
+       bt_declaration_unref(array->p.declaration);
        g_free(array);
 }
 
-uint64_t array_len(struct definition_array *array)
+uint64_t bt_array_len(struct definition_array *array)
 {
+       if (!array->elems)
+               return array->string->len;
        return array->elems->len;
 }
 
-struct definition *array_index(struct definition_array *array, uint64_t i)
+struct bt_definition *bt_array_index(struct definition_array *array, uint64_t i)
 {
+       if (!array->elems)
+               return NULL;
        if (i >= array->elems->len)
                return NULL;
        return g_ptr_array_index(array->elems, i);
 }
+
+int bt_get_array_len(const struct bt_definition *field)
+{
+       struct definition_array *array_definition;
+       struct declaration_array *array_declaration;
+
+       array_definition = container_of(field, struct definition_array, p);
+       array_declaration = array_definition->declaration;
+
+       return array_declaration->len;
+}
+
+GString *bt_get_char_array(const struct bt_definition *field)
+{
+       struct definition_array *array_definition;
+       struct declaration_array *array_declaration;
+       struct bt_declaration *elem;
+
+       array_definition = container_of(field, struct definition_array, p);
+       array_declaration = array_definition->declaration;
+       elem = array_declaration->elem;
+       if (elem->id == CTF_TYPE_INTEGER) {
+               struct declaration_integer *integer_declaration =
+                       container_of(elem, struct declaration_integer, p);
+
+               if (integer_declaration->encoding == CTF_STRING_UTF8
+                               || integer_declaration->encoding == CTF_STRING_ASCII) {
+
+                       if (integer_declaration->len == CHAR_BIT
+                                       && integer_declaration->p.alignment == CHAR_BIT) {
+
+                               return array_definition->string;
+                       }
+               }
+       }
+       fprintf(stderr, "[warning] Extracting string\n");
+       return NULL;
+}
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