/*
- * Common Trace Format - Converter
+ * types.c
*
- * Types registry.
+ * BabelTrace - Converter
*
- * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Types registry.
*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
*
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*/
-#include <ctf/ctf-types.h>
+#include <babeltrace/format.h>
#include <glib.h>
#include <errno.h>
-struct type_class {
- GQuark qname;
- void (*read)();
- size_t (*write)();
-};
+static
+struct definition *
+ lookup_type_definition_scope(GQuark type_name, struct type_scope *scope)
+{
+ return g_hash_table_lookup(scope->type_definitions,
+ (gconstpointer) (unsigned long) type_name);
+}
+
+struct definition *lookup_type_definition(GQuark type_name, struct type_scope *scope)
+{
+ struct definition *definition;
-struct type {
- struct type_class *class;
- size_t alignment; /* type alignment, in bits */
- ssize_t len; /* type length, in bits. -1 for dynamic size. */
-};
+ while (scope) {
+ definition = lookup_type_definition_scope(type_name, scope);
+ if (definition)
+ return definition;
+ scope = scope->parent_scope;
+ }
+ return NULL;
+}
-/*
- * Type class hash table contains the registered type classes. Type class
- * registration is typically performed by a plugin.
- * TODO: support plugin unload (unregistration of type classes).
- */
-GHashTable *type_classes;
+int register_type_definition(GQuark name, struct definition *definition,
+ struct type_scope *scope)
+{
+ if (!name)
+ return -EPERM;
+
+ /* Only lookup in local scope */
+ if (lookup_type_definition_scope(name, scope))
+ return -EEXIST;
+
+ g_hash_table_insert(scope->type_definitions,
+ (gpointer) (unsigned long) name,
+ definition);
+ definition_ref(definition);
+ return 0;
+}
+
+static
+struct definition *
+ lookup_field_definition_scope(GQuark field_name, struct definition_scope *scope)
+{
+ return g_hash_table_lookup(scope->definitions,
+ (gconstpointer) (unsigned long) field_name);
+}
+
+struct definition *
+ lookup_field_definition(GQuark field_name, struct definition_scope *scope)
+{
+ struct definition *definition;
+
+ while (scope) {
+ definition = lookup_field_definition_scope(field_name, scope);
+ if (definition)
+ return definition;
+ scope = scope->parent_scope;
+ }
+ return NULL;
+}
+
+int register_field_definition(GQuark field_name, struct definition *definition,
+ struct definition_scope *scope)
+{
+ if (!field_name)
+ return -EPERM;
+
+ /* Only lookup in local scope */
+ if (lookup_field_definition_scope(field_name, scope))
+ return -EEXIST;
+
+ g_hash_table_insert(scope->definitions,
+ (gpointer) (unsigned long) field_name,
+ definition);
+ definition_ref(definition);
+ return 0;
+}
+
+void type_ref(struct type *type)
+{
+ type->ref++;
+}
+
+void type_unref(struct type *type)
+{
+ if (!--type->ref)
+ type->type_free(type);
+}
+
+void definition_ref(struct definition *definition)
+{
+ definition->ref++;
+}
+
+void definition_unref(struct definition *definition)
+{
+ if (!--definition->ref)
+ definition->type->definition_free(definition);
+}
+
+struct type_scope *
+ new_type_scope(struct type_scope *parent_scope)
+{
+ struct type_scope *scope = g_new(struct type_scope, 1);
+
+ scope->type_definitions = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) definition_unref);
+ scope->struct_types = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) type_unref);
+ scope->variant_types = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) type_unref);
+ scope->enum_types = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) type_unref);
+ scope->parent_scope = parent_scope;
+ return scope;
+}
+
+void free_type_scope(struct type_scope *scope)
+{
+ g_hash_table_destroy(scope->enum_types);
+ g_hash_table_destroy(scope->variant_types);
+ g_hash_table_destroy(scope->struct_types);
+ g_hash_table_destroy(scope->type_definitions);
+ g_free(scope);
+}
+
+static
+struct type_struct *lookup_struct_type_scope(GQuark struct_name,
+ struct type_scope *scope)
+{
+ return g_hash_table_lookup(scope->struct_types,
+ (gconstpointer) (unsigned long) struct_name);
+}
+
+struct type_struct *lookup_struct_type(GQuark struct_name,
+ struct type_scope *scope)
+{
+ struct type_struct *type;
+
+ while (scope) {
+ type = lookup_struct_type_scope(struct_name, scope);
+ if (type)
+ return type;
+ scope = scope->parent_scope;
+ }
+ return NULL;
+}
+
+int register_struct_type(GQuark struct_name, struct type_struct *struct_type,
+ struct type_scope *scope)
+{
+ if (!struct_name)
+ return -EPERM;
+
+ /* Only lookup in local scope */
+ if (lookup_struct_type_scope(struct_name, scope))
+ return -EEXIST;
+
+ g_hash_table_insert(scope->struct_types,
+ (gpointer) (unsigned long) struct_name,
+ struct_type);
+ type_ref(&struct_type->p);
+ return 0;
+}
+
+static
+struct type_variant *lookup_variant_type_scope(GQuark variant_name,
+ struct type_scope *scope)
+{
+ return g_hash_table_lookup(scope->variant_types,
+ (gconstpointer) (unsigned long) variant_name);
+}
-struct type_class *ctf_lookup_type_class(GQuark qname)
+struct type_variant *lookup_variant_type(GQuark variant_name,
+ struct type_scope *scope)
{
- return g_hash_table_lookup(type_classes,
- (gconstpointer) (unsigned long) qname)
+ struct type_variant *type;
+
+ while (scope) {
+ type = lookup_variant_type_scope(variant_name, scope);
+ if (type)
+ return type;
+ scope = scope->parent_scope;
+ }
+ return NULL;
}
-int ctf_register_type_class(const char *name,
- void (*read)(),
- void (*write)())
+int register_variant_type(GQuark variant_name,
+ struct type_variant *variant_type,
+ struct type_scope *scope)
{
- struct type_class tc = g_new(struct type_class, 1);
- GQuark qname = g_quark_from_string(name);
+ if (!variant_name)
+ return -EPERM;
- if (ctf_lookup_type_class(qname))
+ /* Only lookup in local scope */
+ if (lookup_variant_type_scope(variant_name, scope))
return -EEXIST;
- g_hash_table_insert(type_classes,
- (gconstpointer) (unsigned long) qname,
- tc);
+ g_hash_table_insert(scope->variant_types,
+ (gpointer) (unsigned long) variant_name,
+ variant_type);
+ type_ref(&variant_type->p);
return 0;
}
-int ctf_init_types(void)
+static
+struct type_enum *lookup_enum_type_scope(GQuark enum_name,
+ struct type_scope *scope)
+{
+ return g_hash_table_lookup(scope->enum_types,
+ (gconstpointer) (unsigned long) enum_name);
+}
+
+struct type_enum *lookup_enum_type(GQuark enum_name,
+ struct type_scope *scope)
+{
+ struct type_enum *type;
+
+ while (scope) {
+ type = lookup_enum_type_scope(enum_name, scope);
+ if (type)
+ return type;
+ scope = scope->parent_scope;
+ }
+ return NULL;
+}
+
+int register_enum_type(GQuark enum_name, struct type_enum *enum_type,
+ struct type_scope *scope)
{
- type_classes = g_hash_table_new_full(g_direct_hash, g_direct_equal,
- NULL, g_free);
- if (!type_classes)
- return -ENOMEM;
+ if (!enum_name)
+ return -EPERM;
+
+ /* Only lookup in local scope */
+ if (lookup_enum_type_scope(enum_name, scope))
+ return -EEXIST;
+
+ g_hash_table_insert(scope->enum_types,
+ (gpointer) (unsigned long) enum_name,
+ enum_type);
+ type_ref(&enum_type->p);
return 0;
}
-int ctf_finalize_types(void)
+struct definition_scope *
+ new_definition_scope(struct definition_scope *parent_scope)
+{
+ struct definition_scope *scope = g_new(struct definition_scope, 1);
+
+ scope->definitions = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) definition_unref);
+ scope->parent_scope = parent_scope;
+ return scope;
+}
+
+void free_definition_scope(struct definition_scope *scope)
{
- g_hash_table_destroy(type_classes);
+ g_hash_table_destroy(scope->definitions);
+ g_free(scope);
}
projects / babeltrace.git / blobdiff