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-rw-r--r--camel/camel-object.c1115
1 files changed, 0 insertions, 1115 deletions
diff --git a/camel/camel-object.c b/camel/camel-object.c
deleted file mode 100644
index b10edf82a4..0000000000
--- a/camel/camel-object.c
+++ /dev/null
@@ -1,1115 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/* camel-object.c: Base class for Camel */
-
-/*
- * Author:
- * Dan Winship <danw@ximian.com>
- *
- * Copyright 2000 Ximian, Inc. (www.ximian.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <string.h>
-#include "camel-object.h"
-
-#ifdef ENABLE_THREADS
-#include <pthread.h>
-#include <e-util/e-msgport.h>
-#endif
-
-/* I just mashed the keyboard for these... */
-#define CAMEL_OBJECT_MAGIC_VALUE 0x77A344EF
-#define CAMEL_OBJECT_CLASS_MAGIC_VALUE 0xEE26A990
-#define CAMEL_OBJECT_FINALIZED_VALUE 0x84AC3656
-#define CAMEL_OBJECT_CLASS_FINALIZED_VALUE 0x7621ABCD
-
-#define DEFAULT_PREALLOCS 8
-
-#define BAST_CASTARD 1 /* Define to return NULL when casts fail */
-
-#define NULL_PREP_VALUE ((gpointer)make_global_classfuncs) /* See camel_object_class_declare_event */
-
-/* ** Quickie type system ************************************************* */
-
-typedef struct _CamelTypeInfo
-{
- CamelType self;
- CamelType parent;
- const gchar *name;
-
- size_t instance_size;
- GMemChunk *instance_chunk;
- CamelObjectInitFunc instance_init;
- CamelObjectFinalizeFunc instance_finalize;
- GList *free_instances;
-
- size_t classfuncs_size;
- CamelObjectClassInitFunc class_init;
- CamelObjectClassFinalizeFunc class_finalize;
- CamelObjectClass *global_classfuncs;
-}
-CamelTypeInfo;
-
-/* A 'locked' hooklist, that is only allocated on demand */
-typedef struct _CamelHookList {
- EMutex *lock;
-
- unsigned int depth:30; /* recursive event depth */
- unsigned int flags:2; /* flags, see below */
-
- unsigned int list_length;
- struct _CamelHookPair *list;
-} CamelHookList;
-
-#define CAMEL_HOOK_PAIR_REMOVED (1<<0)
-
-/* a 'hook pair', actually a hook tuple, we just store all hooked events in the same list,
- and just comapre as we go, rather than storing separate lists for each hook type
-
- the name field just points directly to the key field in the class's preplist hashtable.
- This way we can just use a direct pointer compare when scanning it, and also saves
- copying the string */
-typedef struct _CamelHookPair
-{
- struct _CamelHookPair *next; /* next MUST be the first member */
-
- unsigned int flags; /* removed, etc */
-
- const char *name; /* points to the key field in the classes preplist, static memory */
- CamelObjectEventHookFunc func;
- void *data;
-} CamelHookPair;
-
-/* ************************************************************************ */
-
-static void camel_type_lock_up (void);
-static void camel_type_lock_down (void);
-
-static void obj_init (CamelObject * obj);
-static void obj_finalize (CamelObject * obj);
-static void obj_class_init (CamelObjectClass * class);
-static void obj_class_finalize (CamelObjectClass * class);
-
-static gboolean shared_is_of_type (CamelObjectShared * sh, CamelType ctype,
- gboolean is_obj);
-static void make_global_classfuncs (CamelTypeInfo * type_info);
-
-static void camel_object_free_hooks(CamelObject *o);
-
-/* ************************************************************************ */
-
-G_LOCK_DEFINE_STATIC (type_system);
-G_LOCK_DEFINE_STATIC (type_system_level);
-static GPrivate *type_system_locklevel = NULL;
-
-G_LOCK_DEFINE_STATIC (refcount);
-
-static gboolean type_system_initialized = FALSE;
-static GHashTable *ctype_to_typeinfo = NULL;
-static GHashTable *name_to_typeinfo = NULL;
-static const CamelType camel_object_type = 1;
-static CamelType cur_max_type = CAMEL_INVALID_TYPE;
-
-/* ************************************************************************ */
-
-#define LOCK_VAL (GPOINTER_TO_INT (g_private_get (type_system_locklevel)))
-#define LOCK_SET( val ) g_private_set (type_system_locklevel, GINT_TO_POINTER (val))
-
-static void
-camel_type_lock_up (void)
-{
- G_LOCK (type_system_level);
-
- if (type_system_locklevel == NULL)
- type_system_locklevel = g_private_new (GINT_TO_POINTER (0));
-
- if (LOCK_VAL == 0) {
- G_UNLOCK (type_system_level);
- G_LOCK (type_system);
- G_LOCK (type_system_level);
- }
-
- LOCK_SET (LOCK_VAL + 1);
-
- G_UNLOCK (type_system_level);
-}
-
-static void
-camel_type_lock_down (void)
-{
- G_LOCK (type_system_level);
-
- if (type_system_locklevel == NULL) {
- g_warning
- ("camel_type_lock_down: lock down before a lock up?");
- type_system_locklevel = g_private_new (GINT_TO_POINTER (0));
- G_UNLOCK (type_system_level);
- return;
- }
-
- LOCK_SET (LOCK_VAL - 1);
-
- if (LOCK_VAL == 0)
- G_UNLOCK (type_system);
-
- G_UNLOCK (type_system_level);
-}
-
-void
-camel_type_init (void)
-{
- CamelTypeInfo *obj_info;
-
- camel_type_lock_up ();
-
- if (type_system_initialized) {
- g_warning ("camel_type_init: type system already initialized.");
- camel_type_lock_down ();
- return;
- }
-
- type_system_initialized = TRUE;
- ctype_to_typeinfo = g_hash_table_new (g_direct_hash, g_direct_equal);
- name_to_typeinfo = g_hash_table_new (g_str_hash, g_str_equal);
-
- obj_info = g_new (CamelTypeInfo, 1);
- obj_info->self = camel_object_type;
- obj_info->parent = CAMEL_INVALID_TYPE;
- obj_info->name = "CamelObject";
-
- obj_info->instance_size = sizeof (CamelObject);
- obj_info->instance_chunk =
- g_mem_chunk_create (CamelObject, DEFAULT_PREALLOCS,
- G_ALLOC_ONLY);
- obj_info->instance_init = obj_init;
- obj_info->instance_finalize = obj_finalize;
- obj_info->free_instances = NULL;
-
- obj_info->classfuncs_size = sizeof (CamelObjectClass);
- obj_info->class_init = obj_class_init;
- obj_info->class_finalize = obj_class_finalize;
-
- g_hash_table_insert (ctype_to_typeinfo,
- GINT_TO_POINTER (CAMEL_INVALID_TYPE), NULL);
- g_hash_table_insert (ctype_to_typeinfo,
- GINT_TO_POINTER (camel_object_type), obj_info);
- g_hash_table_insert (name_to_typeinfo, (gpointer) obj_info->name, obj_info);
-
- /* Sigh. Ugly */
- make_global_classfuncs (obj_info);
-
- cur_max_type = camel_object_type;
-
- camel_type_lock_down ();
-}
-
-CamelType
-camel_type_register (CamelType parent, const gchar * name,
- size_t instance_size, size_t classfuncs_size,
- CamelObjectClassInitFunc class_init,
- CamelObjectClassFinalizeFunc class_finalize,
- CamelObjectInitFunc instance_init,
- CamelObjectFinalizeFunc instance_finalize)
-{
- CamelTypeInfo *parent_info;
- CamelTypeInfo *obj_info;
- gchar *chunkname;
-
- g_return_val_if_fail (parent != CAMEL_INVALID_TYPE,
- CAMEL_INVALID_TYPE);
- g_return_val_if_fail (name, CAMEL_INVALID_TYPE);
- g_return_val_if_fail (instance_size, CAMEL_INVALID_TYPE);
- g_return_val_if_fail (classfuncs_size, CAMEL_INVALID_TYPE);
-
- camel_type_lock_up ();
-
- if (type_system_initialized == FALSE) {
- G_UNLOCK (type_system);
- camel_type_init ();
- G_LOCK (type_system);
- }
-
- obj_info = g_hash_table_lookup (name_to_typeinfo, name);
- if (obj_info != NULL) {
- /* looks like we've already registered this type... */
- camel_type_lock_down ();
- return obj_info->self;
- }
-
- parent_info =
- g_hash_table_lookup (ctype_to_typeinfo,
- GINT_TO_POINTER (parent));
-
- if (parent_info == NULL) {
- g_warning
- ("camel_type_register: no such parent type %d of class `%s'",
- parent, name);
- camel_type_lock_down ();
- return CAMEL_INVALID_TYPE;
- }
-
- if (parent_info->instance_size > instance_size) {
- g_warning
- ("camel_type_register: instance of class `%s' would be smaller than parent `%s'",
- name, parent_info->name);
- camel_type_lock_down ();
- return CAMEL_INVALID_TYPE;
- }
-
- if (parent_info->classfuncs_size > classfuncs_size) {
- g_warning
- ("camel_type_register: classfuncs of class `%s' would be smaller than parent `%s'",
- name, parent_info->name);
- camel_type_lock_down ();
- return CAMEL_INVALID_TYPE;
- }
-
- cur_max_type++;
-
- obj_info = g_new (CamelTypeInfo, 1);
- obj_info->self = cur_max_type;
- obj_info->parent = parent;
- obj_info->name = name;
-
- obj_info->instance_size = instance_size;
- chunkname =
- g_strdup_printf ("chunk for instances of Camel type `%s'",
- name);
- obj_info->instance_chunk =
- g_mem_chunk_new (chunkname, instance_size,
- instance_size * DEFAULT_PREALLOCS,
- G_ALLOC_ONLY);
- g_free (chunkname);
- obj_info->instance_init = instance_init;
- obj_info->instance_finalize = instance_finalize;
- obj_info->free_instances = NULL;
-
- obj_info->classfuncs_size = classfuncs_size;
- obj_info->class_init = class_init;
- obj_info->class_finalize = class_finalize;
-
- g_hash_table_insert (ctype_to_typeinfo,
- GINT_TO_POINTER (obj_info->self), obj_info);
- g_hash_table_insert (name_to_typeinfo, (gpointer) obj_info->name, obj_info);
-
- /* Sigh. Ugly. */
- make_global_classfuncs (obj_info);
-
- camel_type_lock_down ();
- return obj_info->self;
-}
-
-CamelObjectClass *
-camel_type_get_global_classfuncs (CamelType type)
-{
- CamelTypeInfo *type_info;
-
- g_return_val_if_fail (type != CAMEL_INVALID_TYPE, NULL);
-
- camel_type_lock_up ();
- type_info =
- g_hash_table_lookup (ctype_to_typeinfo,
- GINT_TO_POINTER (type));
- camel_type_lock_down ();
-
- g_return_val_if_fail (type_info != NULL, NULL);
-
- return type_info->global_classfuncs;
-}
-
-const gchar *
-camel_type_to_name (CamelType type)
-{
- CamelTypeInfo *type_info;
-
- g_return_val_if_fail (type != CAMEL_INVALID_TYPE,
- "(the invalid type)");
-
- camel_type_lock_up ();
- type_info =
- g_hash_table_lookup (ctype_to_typeinfo,
- GINT_TO_POINTER (type));
- camel_type_lock_down ();
-
- g_return_val_if_fail (type_info != NULL,
- "(a bad type parameter was specified)");
-
- return type_info->name;
-}
-
-/* ** The CamelObject ***************************************************** */
-
-static void
-obj_init (CamelObject * obj)
-{
- obj->s.magic = CAMEL_OBJECT_MAGIC_VALUE;
- obj->ref_count = 1;
- obj->hooks = NULL;
- obj->in_event = 0;
- obj->destroying = 0;
-}
-
-static void
-obj_finalize (CamelObject * obj)
-{
- g_return_if_fail (obj->s.magic == CAMEL_OBJECT_MAGIC_VALUE);
- g_return_if_fail (obj->ref_count == 0);
- g_return_if_fail (obj->in_event == 0);
-
- obj->s.magic = CAMEL_OBJECT_FINALIZED_VALUE;
-
- camel_object_free_hooks(obj);
-}
-
-static void
-obj_class_init (CamelObjectClass * class)
-{
- class->s.magic = CAMEL_OBJECT_CLASS_MAGIC_VALUE;
-
- camel_object_class_declare_event (class, "finalize", NULL);
-}
-
-static void
-obj_class_finalize (CamelObjectClass * class)
-{
- g_return_if_fail (class->s.magic == CAMEL_OBJECT_CLASS_MAGIC_VALUE);
-
- class->s.magic = CAMEL_OBJECT_CLASS_FINALIZED_VALUE;
-
- if (class->event_to_preplist) {
- /* FIXME: This leaks the preplist slist entries */
- g_hash_table_foreach (class->event_to_preplist,
- (GHFunc) g_free, NULL);
- g_hash_table_destroy (class->event_to_preplist);
- class->event_to_preplist = NULL;
- }
-}
-
-CamelType
-camel_object_get_type (void)
-{
- if (type_system_initialized == FALSE)
- camel_type_init ();
-
- return camel_object_type;
-}
-
-CamelObject *
-camel_object_new (CamelType type)
-{
- CamelTypeInfo *type_info;
- GSList *parents = NULL;
- GSList *head = NULL;
- CamelObject *instance;
-
- g_return_val_if_fail (type != CAMEL_INVALID_TYPE, NULL);
-
- /* Look up the type */
-
- camel_type_lock_up ();
-
- type_info =
- g_hash_table_lookup (ctype_to_typeinfo,
- GINT_TO_POINTER (type));
-
- if (type_info == NULL) {
- g_warning
- ("camel_object_new: trying to create object of invalid type %d",
- type);
- camel_type_lock_down ();
- return NULL;
- }
-
- /* Grab an instance out of the freed ones if possible, alloc otherwise */
-
- if (type_info->free_instances) {
- GList *first;
-
- first = g_list_first (type_info->free_instances);
- instance = first->data;
- type_info->free_instances =
- g_list_remove_link (type_info->free_instances, first);
- g_list_free_1 (first);
- memset (instance, 0, type_info->instance_size);
- } else {
- instance = g_mem_chunk_alloc0 (type_info->instance_chunk);
- }
-
- /* Init the instance and classfuncs a bit */
-
- instance->s.type = type;
- instance->classfuncs = type_info->global_classfuncs;
-
- /* Loop through the parents in simplest -> most complex order, initing the class and instance.
-
- * When parent = CAMEL_INVALID_TYPE and we're at the end of the line, _lookup returns NULL
- * because we inserted it as corresponding to CAMEL_INVALID_TYPE. Clever, eh?
- */
-
- while (type_info) {
- parents = g_slist_prepend (parents, type_info);
- type_info =
- g_hash_table_lookup (ctype_to_typeinfo,
- GINT_TO_POINTER (type_info->
- parent));
- }
-
- head = parents;
-
- for (; parents && parents->data; parents = parents->next) {
- CamelTypeInfo *thisinfo;
-
- thisinfo = parents->data;
- if (thisinfo->instance_init)
- (thisinfo->instance_init) (instance);
- }
-
- g_slist_free (head);
-
- camel_type_lock_down ();
- return instance;
-}
-
-#ifdef camel_object_ref
-#undef camel_object_ref
-#endif
-
-void
-camel_object_ref (CamelObject * obj)
-{
- g_return_if_fail (CAMEL_IS_OBJECT (obj));
-
- G_LOCK (refcount);
- obj->ref_count++;
- G_UNLOCK (refcount);
-}
-
-#ifdef camel_object_unref
-#undef camel_object_unref
-#endif
-
-void
-camel_object_unref (CamelObject * obj)
-{
- CamelTypeInfo *type_info;
- CamelTypeInfo *iter;
- GSList *parents = NULL;
- GSList *head = NULL;
-
- g_return_if_fail (CAMEL_IS_OBJECT (obj));
-
- G_LOCK (refcount);
- obj->ref_count--;
-
- if (obj->ref_count > 0) {
- G_UNLOCK (refcount);
- return;
- }
-
- G_UNLOCK (refcount);
-
- /* If the object already had its last unref, do not begin the
- * destruction process again. This can happen if, for example,
- * the object sends an event in its finalize handler (vfolders
- * do this).
- */
-
- if (obj->destroying)
- return;
-
- obj->destroying = 1;
-
- /* Send the finalize event */
-
- camel_object_trigger_event (obj, "finalize", NULL);
-
- /* Destroy it! hahaha! */
-
- camel_type_lock_up ();
-
- type_info =
- g_hash_table_lookup (ctype_to_typeinfo,
- GINT_TO_POINTER (obj->s.type));
-
- if (type_info == NULL) {
- g_warning
- ("camel_object_unref: seemingly valid object has a bad type %d",
- obj->s.type);
- camel_type_lock_down ();
- return;
- }
-
- /* Loop through the parents in most complex -> simplest order, finalizing the class
- * and instance.
- *
- * When parent = CAMEL_INVALID_TYPE and we're at the end of the line, _lookup returns NULL
- * because we inserted it as corresponding to CAMEL_INVALID_TYPE. Clever, eh?
- *
- * Use iter to preserve type_info for free_{instance,classfunc}s
- */
-
- iter = type_info;
-
- while (iter) {
- parents = g_slist_prepend (parents, iter);
- iter =
- g_hash_table_lookup (ctype_to_typeinfo,
- GINT_TO_POINTER (iter->parent));
- }
-
- /* ok, done with the type stuff, and our data pointers
- * won't go bad. */
- camel_type_lock_down ();
-
- parents = g_slist_reverse (parents);
- head = parents;
-
- for (; parents && parents->data; parents = parents->next) {
- CamelTypeInfo *thisinfo;
-
- thisinfo = parents->data;
- if (thisinfo->instance_finalize)
- (thisinfo->instance_finalize) (obj);
- }
-
- g_slist_free (head);
-
- /* Sanity check */
-
- if (obj->ref_count != 0)
- g_warning ("camel_object_unref: destroyed object %s at %p somehow got"
- " referenced in destruction chain.",
- camel_type_to_name (obj->s.type),
- obj);
-
- /* A little bit of cleaning up.
-
- * Don't erase the type, so we can peek at it if a finalized object
- * is check_cast'ed somewhere. Fill it with gunk to help detect
- * other invalid ref's of it.
- */
-
- memset (obj, 0xEB, type_info->instance_size);
- obj->s.type = type_info->self;
- obj->s.magic = CAMEL_OBJECT_FINALIZED_VALUE;
-
- /* Tuck away the pointer for use in a new object */
-
- camel_type_lock_up ();
-
- type_info->free_instances =
- g_list_prepend (type_info->free_instances, obj);
-
- camel_type_lock_down ();
-}
-
-gboolean
-camel_object_is_of_type (CamelObject * obj, CamelType ctype)
-{
- return shared_is_of_type ((CamelObjectShared *) obj, ctype, TRUE);
-}
-
-gboolean
-camel_object_class_is_of_type (CamelObjectClass * class, CamelType ctype)
-{
- return shared_is_of_type ((CamelObjectShared *) class, ctype, FALSE);
-}
-
-#ifdef BAST_CASTARD
-#define ERRVAL NULL
-#else
-#define ERRVAL obj
-#endif
-
-CamelObject *
-camel_object_check_cast (CamelObject * obj, CamelType ctype)
-{
- if (shared_is_of_type ((CamelObjectShared *) obj, ctype, TRUE))
- return obj;
- return ERRVAL;
-}
-
-CamelObjectClass *
-camel_object_class_check_cast (CamelObjectClass * class, CamelType ctype)
-{
- if (shared_is_of_type ((CamelObjectShared *) class, ctype, FALSE))
- return class;
- return ERRVAL;
-}
-
-#undef ERRVAL
-
-gchar *
-camel_object_describe (CamelObject * obj)
-{
- if (obj == NULL)
- return g_strdup ("a NULL pointer");
-
- if (obj->s.magic == CAMEL_OBJECT_MAGIC_VALUE) {
- return g_strdup_printf ("an instance of `%s' at %p",
- camel_type_to_name (obj->s.type),
- obj);
- } else if (obj->s.magic == CAMEL_OBJECT_FINALIZED_VALUE) {
- return g_strdup_printf ("a finalized instance of `%s' at %p",
- camel_type_to_name (obj->s.type),
- obj);
- } else if (obj->s.magic == CAMEL_OBJECT_CLASS_MAGIC_VALUE) {
- return g_strdup_printf ("the classfuncs of `%s' at %p",
- camel_type_to_name (obj->s.type),
- obj);
- } else if (obj->s.magic == CAMEL_OBJECT_CLASS_FINALIZED_VALUE) {
- return
- g_strdup_printf
- ("the finalized classfuncs of `%s' at %p",
- camel_type_to_name (obj->s.type), obj);
- }
-
- return g_strdup ("not a CamelObject");
-}
-
-/* This is likely to be called in the class_init callback,
- * and the type will likely be somewhat uninitialized.
- * Is this a problem? We'll see....
- */
-void
-camel_object_class_declare_event (CamelObjectClass * class,
- const gchar * name,
- CamelObjectEventPrepFunc prep)
-{
- g_return_if_fail (CAMEL_IS_OBJECT_CLASS (class));
- g_return_if_fail (name);
-
- if (class->event_to_preplist == NULL)
- class->event_to_preplist =
- g_hash_table_new (g_str_hash, g_str_equal);
- else if (g_hash_table_lookup (class->event_to_preplist, name) != NULL) {
- g_warning
- ("camel_object_class_declare_event: event `%s' already declared for `%s'",
- name, camel_type_to_name (class->s.type));
- return;
- }
-
- /* AIEEEEEEEEEEEEEEEEEEEEEE
-
- * I feel so naughty. Since it's valid to declare an event and not
- * provide a hook, it should be valid to insert a NULL value into
- * the table. However, then our lookup in trigger_event would be
- * ambiguous, not telling us whether the event is undefined or whether
- * it merely has no hook.
- *
- * So we create an 'NULL prep' value that != NULL... specifically, it
- * equals the address of one of our static functions , because that
- * can't possibly be your hook.
- *
- * Just don't forget to check for the 'evil value' and it'll work,
- * I promise.
- */
-
- if (prep == NULL)
- prep = NULL_PREP_VALUE;
-
- g_hash_table_insert (class->event_to_preplist, g_strdup (name), prep);
-}
-
-/* free hook data */
-static void camel_object_free_hooks(CamelObject *o)
-{
- CamelHookPair *pair, *next;
-
- if (o->hooks) {
-
- g_assert(o->hooks->depth == 0);
- g_assert((o->hooks->flags & CAMEL_HOOK_PAIR_REMOVED) == 0);
-
- pair = o->hooks->list;
- while (pair) {
- next = pair->next;
- g_free(pair);
- pair = next;
- }
- e_mutex_destroy(o->hooks->lock);
- g_free(o->hooks);
- o->hooks = NULL;
- }
-}
-
-/* return (allocate if required) the object's hook list, locking at the same time */
-static CamelHookList *camel_object_get_hooks(CamelObject *o)
-{
-#ifdef ENABLE_THREADS
- static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
-#endif
- CamelHookList *hooks;
-
- /* if we have it, we dont have to do any other locking,
- otherwise use a global lock to setup the object's hook data */
-#ifdef ENABLE_THREADS
- if (o->hooks == NULL) {
- pthread_mutex_lock(&lock);
-#endif
- if (o->hooks == NULL) {
- hooks = g_malloc(sizeof(*o->hooks));
-#ifdef ENABLE_THREADS
- hooks->lock = e_mutex_new(E_MUTEX_REC);
-#endif
- hooks->flags = 0;
- hooks->depth = 0;
- hooks->list_length = 0;
- hooks->list = NULL;
- o->hooks = hooks;
- }
-#ifdef ENABLE_THREADS
- pthread_mutex_unlock(&lock);
- }
-#endif
-
-#ifdef ENABLE_THREADS
- e_mutex_lock(o->hooks->lock);
-#endif
- return o->hooks;
-}
-
-/* unlock object hooks' list */
-#ifdef ENABLE_THREADS
-#define camel_object_unget_hooks(o) (e_mutex_unlock((CAMEL_OBJECT(o)->hooks->lock)))
-#else
-#define camel_object_unget_hooks(o)
-#endif
-
-void
-camel_object_hook_event (CamelObject * obj, const char * name,
- CamelObjectEventHookFunc func, void *data)
-{
- CamelHookPair *pair;
- const char *prepname;
- CamelObjectEventPrepFunc prep;
- CamelHookList *hooks;
-
- g_return_if_fail (CAMEL_IS_OBJECT (obj));
- g_return_if_fail (name != NULL);
- g_return_if_fail (func != NULL);
-
- /* first, does this event exist? */
- if (obj->classfuncs->event_to_preplist == NULL
- || !g_hash_table_lookup_extended(obj->classfuncs->event_to_preplist, name,
- (void **)&prepname, (void **)&prep)) {
- g_warning("camel_object_hook_event: trying to hook event `%s' in class `%s' with no defined events.",
- name, camel_type_to_name (obj->s.type));
- return;
- }
-
- /* setup hook pair */
- pair = g_malloc(sizeof(*pair));
- pair->name = prepname; /* effectively static! */
- pair->func = func;
- pair->data = data;
- pair->flags = 0;
-
- /* get the hook list object, locked, link in new event hook, unlock */
- hooks = camel_object_get_hooks(obj);
- pair->next = hooks->list;
- hooks->list = pair;
- hooks->list_length++;
- camel_object_unget_hooks(obj);
-}
-
-void
-camel_object_unhook_event (CamelObject * obj, const char * name,
- CamelObjectEventHookFunc func, void *data)
-{
- char *prepname;
- CamelObjectEventPrepFunc prep;
- CamelHookList *hooks;
- CamelHookPair *pair, *parent;
-
- g_return_if_fail (CAMEL_IS_OBJECT (obj));
- g_return_if_fail (name != NULL);
- g_return_if_fail (func != NULL);
-
- if (obj->hooks == NULL) {
- g_warning("camel_object_unhook_event: trying to unhook `%s` from an instance of `%s' with no hooks",
- name, camel_type_to_name(obj->s.type));
- return;
- }
-
- /* get event name static pointer */
- if (obj->classfuncs->event_to_preplist == NULL
- || !g_hash_table_lookup_extended(obj->classfuncs->event_to_preplist, name,
- (void **)&prepname, (void **)&prep)) {
- g_warning("camel_object_hook_event: trying to hook event `%s' in class `%s' with no defined events.",
- name, camel_type_to_name (obj->s.type));
- return;
- }
-
- /* scan hooks for this event, remove it, or flag it if we're busy */
- hooks = camel_object_get_hooks(obj);
- parent = (CamelHookPair *)&hooks->list;
- pair = parent->next;
- while (pair) {
- if (pair->name == prepname
- && pair->func == func
- && pair->data == data
- && (pair->flags & CAMEL_HOOK_PAIR_REMOVED) == 0) {
- if (hooks->depth > 0) {
- pair->flags |= CAMEL_HOOK_PAIR_REMOVED;
- hooks->flags |= CAMEL_HOOK_PAIR_REMOVED;
- } else {
- parent->next = pair->next;
- g_free(pair);
- hooks->list_length--;
- }
- camel_object_unget_hooks(obj);
- return;
- }
- parent = pair;
- pair = pair->next;
- }
- camel_object_unget_hooks(obj);
-
- g_warning("camel_object_unhook_event: cannot find hook/data pair %p/%p in an instance of `%s' attached to `%s'",
- func, data, camel_type_to_name (obj->s.type), name);
-}
-
-void
-camel_object_trigger_event (CamelObject * obj, const char * name, void *event_data)
-{
- CamelObjectEventPrepFunc prep;
- const char *prepname;
- CamelHookList *hooks;
- CamelHookPair *pair, **pairs, *parent;
- int i, size;
-
- g_return_if_fail (CAMEL_IS_OBJECT (obj));
- g_return_if_fail (name);
-
- /* get event name static pointer/prep func */
- if (obj->classfuncs->event_to_preplist == NULL
- || !g_hash_table_lookup_extended(obj->classfuncs->event_to_preplist, name,
- (void **)&prepname, (void **)&prep)) {
- g_warning("camel_object_hook_event: trying to hook event `%s' in class `%s' with no defined events.",
- name, camel_type_to_name (obj->s.type));
- return;
- }
-
- /* try prep function, if false, then quit */
- if (prep != NULL_PREP_VALUE && !prep(obj, event_data))
- return;
-
- /* also, no hooks, dont bother going further */
- if (obj->hooks == NULL)
- return;
-
- /* lock the object for hook emission */
- camel_object_ref(obj);
- hooks = camel_object_get_hooks(obj);
-
- if (hooks->list) {
- /* first, copy the items in the list, and say we're in an event */
- hooks->depth++;
- pair = hooks->list;
- size = 0;
- pairs = alloca(sizeof(pairs[0]) * hooks->list_length);
- while (pair) {
- if (pair->name == prepname)
- pairs[size++] = pair;
- pair = pair->next;
- }
-
- /* now execute the events we have, if they haven't been removed during our calls */
- for (i=0;i<size;i++) {
- pair = pairs[i];
- if ((pair->flags & CAMEL_HOOK_PAIR_REMOVED) == 0)
- (pair->func) (obj, event_data, pair->data);
- }
- hooks->depth--;
-
- /* and if we're out of any events, then clean up any pending removes */
- if (hooks->depth == 0 && (hooks->flags & CAMEL_HOOK_PAIR_REMOVED)) {
- parent = (CamelHookPair *)&hooks->list;
- pair = parent->next;
- while (pair) {
- if (pair->flags & CAMEL_HOOK_PAIR_REMOVED) {
- parent->next = pair->next;
- g_free(pair);
- hooks->list_length--;
- } else {
- parent = pair;
- }
- pair = parent->next;
- }
- hooks->flags &= ~CAMEL_HOOK_PAIR_REMOVED;
- }
- }
-
- camel_object_unget_hooks(obj);
- camel_object_unref(obj);
-}
-
-/* ** Static helpers ****************************************************** */
-
-static gboolean
-shared_is_of_type (CamelObjectShared * sh, CamelType ctype, gboolean is_obj)
-{
- CamelTypeInfo *type_info;
- gchar *targtype;
-
- if (is_obj)
- targtype = "instance";
- else
- targtype = "classdata";
-
- if (ctype == CAMEL_INVALID_TYPE) {
- g_warning
- ("shared_is_of_type: trying to cast to CAMEL_INVALID_TYPE");
- return FALSE;
- }
-
- if (sh == NULL) {
- g_warning
- ("shared_is_of_type: trying to cast NULL to %s of `%s'",
- targtype, camel_type_to_name (ctype));
- return FALSE;
- }
-
- if (sh->magic == CAMEL_OBJECT_FINALIZED_VALUE) {
- g_warning
- ("shared_is_of_type: trying to cast finalized instance "
- "of `%s' into %s of `%s'",
- camel_type_to_name (sh->type), targtype,
- camel_type_to_name (ctype));
- return FALSE;
- }
-
- if (sh->magic == CAMEL_OBJECT_CLASS_FINALIZED_VALUE) {
- g_warning
- ("shared_is_of_type: trying to cast finalized classdata "
- "of `%s' into %s of `%s'",
- camel_type_to_name (sh->type), targtype,
- camel_type_to_name (ctype));
- return FALSE;
- }
-
- if (is_obj) {
- if (sh->magic == CAMEL_OBJECT_CLASS_MAGIC_VALUE) {
- g_warning
- ("shared_is_of_type: trying to cast classdata "
- "of `%s' into instance of `%s'",
- camel_type_to_name (sh->type),
- camel_type_to_name (ctype));
- return FALSE;
- }
-
- if (sh->magic != CAMEL_OBJECT_MAGIC_VALUE) {
- g_warning
- ("shared_is_of_type: trying to cast junk data "
- "into instance of `%s'",
- camel_type_to_name (ctype));
- return FALSE;
- }
- } else {
- if (sh->magic == CAMEL_OBJECT_MAGIC_VALUE) {
- g_warning
- ("shared_is_of_type: trying to cast instance "
- "of `%s' into classdata of `%s'",
- camel_type_to_name (sh->type),
- camel_type_to_name (ctype));
- return FALSE;
- }
-
- if (sh->magic != CAMEL_OBJECT_CLASS_MAGIC_VALUE) {
- g_warning
- ("shared_is_of_type: trying to cast junk data "
- "into classdata of `%s'",
- camel_type_to_name (ctype));
- return FALSE;
- }
- }
-
- camel_type_lock_up ();
-
- type_info =
- g_hash_table_lookup (ctype_to_typeinfo,
- GINT_TO_POINTER (sh->type));
-
- if (type_info == NULL) {
- g_warning ("shared_is_of_type: seemingly valid %s has "
- "bad type %d.", targtype, sh->type);
- camel_type_lock_down ();
- return FALSE;
- }
-
- while (type_info) {
- if (type_info->self == ctype) {
- camel_type_lock_down ();
- return TRUE;
- }
-
- type_info =
- g_hash_table_lookup (ctype_to_typeinfo,
- GINT_TO_POINTER (type_info->
- parent));
- }
-
- /* this isn't an error, e.g. CAMEL_IS_FOLDER(folder), its upto the
- caller to handle the false case */
- /*g_warning
- ("shared_is_of_type: %s of `%s' (@%p) is not also %s of `%s'",
- targtype, camel_type_to_name (sh->type), sh, targtype,
- camel_type_to_name (ctype));*/
-
- camel_type_lock_down ();
- return FALSE;
-}
-
-static void
-make_global_classfuncs (CamelTypeInfo * type_info)
-{
- CamelObjectClass *funcs;
- GSList *parents;
- GSList *head;
-
- g_assert (type_info);
-
- funcs = g_malloc0 (type_info->classfuncs_size);
- funcs->s.type = type_info->self;
-
- type_info->global_classfuncs = funcs;
-
- parents = NULL;
- while (type_info) {
- parents = g_slist_prepend (parents, type_info);
- type_info =
- g_hash_table_lookup (ctype_to_typeinfo,
- GINT_TO_POINTER (type_info->
- parent));
- }
-
- head = parents;
-
- for (; parents && parents->data; parents = parents->next) {
- CamelTypeInfo *thisinfo;
-
- thisinfo = parents->data;
- if (thisinfo->class_init)
- (thisinfo->class_init) (funcs);
- }
-
- g_slist_free (head);
-}