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-rw-r--r--camel/ChangeLog17
-rw-r--r--camel/camel-object.c208
2 files changed, 89 insertions, 136 deletions
diff --git a/camel/ChangeLog b/camel/ChangeLog
index eb27d0fe62..c6664538be 100644
--- a/camel/ChangeLog
+++ b/camel/ChangeLog
@@ -1,3 +1,20 @@
+2001-10-02 <NotZed@Ximian.com>
+
+ * camel-object.c (camel_object_get_hooks): Change the lock to a
+ recursive e-mutex.
+ (camel_object_hook_event): Maintain list length of hook list.
+ (camel_object_unhook_event): "
+ (camel_object_unhook_event): If we are in an event, just mark the
+ pair as removed, without removing it.
+ (camel_object_trigger_event): Before running events, copy the
+ list, and also ignore 'removed' events. After running events, if
+ we're all out of events, then free up any pending-removed events.
+ (camel_object_free_hooks): Add some new assertions on the state of
+ the hook structure.
+ Removed the #error if threads not defined. It _should_ actually
+ work without threads.
+ (camel_object_free_hooks): Free mutex when done.
+
2001-10-01 Jeffrey Stedfast <fejj@ximian.com>
* providers/imap/camel-imap-store.c (delete_folder): Remove any
diff --git a/camel/camel-object.c b/camel/camel-object.c
index fde35f3be1..85be0bcf61 100644
--- a/camel/camel-object.c
+++ b/camel/camel-object.c
@@ -30,12 +30,10 @@
#include <string.h>
#include "camel-object.h"
-/* FIXME: Make the code so this isn't necessary, its just the hook locking thats the problem */
-#ifndef ENABLE_THREADS
-#error "Threads must be enabled to compile this version of camel"
-#endif
-
+#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
@@ -72,11 +70,17 @@ CamelTypeInfo;
/* A 'locked' hooklist, that is only allocated on demand */
typedef struct _CamelHookList {
- pthread_mutex_t lock;
+ 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
@@ -87,6 +91,8 @@ 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;
@@ -711,12 +717,17 @@ 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;
}
@@ -739,8 +750,11 @@ static CamelHookList *camel_object_get_hooks(CamelObject *o)
if (o->hooks == NULL) {
hooks = g_malloc(sizeof(*o->hooks));
#ifdef ENABLE_THREADS
- pthread_mutex_init(&hooks->lock, NULL);
+ 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;
}
@@ -750,14 +764,14 @@ static CamelHookList *camel_object_get_hooks(CamelObject *o)
#endif
#ifdef ENABLE_THREADS
- pthread_mutex_lock(&o->hooks->lock);
+ e_mutex_lock(o->hooks->lock);
#endif
return o->hooks;
}
/* unlock object hooks' list */
#ifdef ENABLE_THREADS
-#define camel_object_unget_hooks(o) (pthread_mutex_unlock(&(CAMEL_OBJECT(o)->hooks->lock)))
+#define camel_object_unget_hooks(o) (e_mutex_unlock((CAMEL_OBJECT(o)->hooks->lock)))
#else
#define camel_object_unget_hooks(o)
#endif
@@ -789,43 +803,20 @@ camel_object_hook_event (CamelObject * obj, const char * name,
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);
-
-#if 0
- if (obj->event_to_hooklist == NULL)
- obj->event_to_hooklist =
- g_hash_table_new (g_str_hash, g_str_equal);
-
- pair = g_new (CamelHookPair, 1);
- pair->func = hook;
- pair->user_data = user_data;
-
- if (g_hash_table_lookup_extended (obj->event_to_hooklist, name,
- &old_name, &old_hooklist)) {
- hooklist = g_slist_prepend (old_hooklist, pair);
- g_hash_table_insert (obj->event_to_hooklist, old_name,
- hooklist);
- } else {
- hooklist = g_slist_prepend (NULL, pair);
- g_hash_table_insert (obj->event_to_hooklist, g_strdup (name),
- hooklist);
- }
-#endif
}
void
camel_object_unhook_event (CamelObject * obj, const char * name,
CamelObjectEventHookFunc func, void *data)
{
-#if 0
- GSList *hooklist;
- GSList *head;
-#endif
char *prepname;
CamelObjectEventPrepFunc prep;
CamelHookList *hooks;
@@ -850,14 +841,23 @@ camel_object_unhook_event (CamelObject * obj, const char * name,
return;
}
- /* scan hooks for this event, remove it */
+ /* 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) {
- parent->next = pair->next;
- g_free(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;
}
@@ -868,57 +868,16 @@ camel_object_unhook_event (CamelObject * obj, const char * name,
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);
-
-#if 0
- if (obj->event_to_hooklist == NULL) {
- g_warning
- ("camel_object_unhook_event: trying to unhook `%s' from an instance "
- "of `%s' with no hooks attached", name,
- camel_type_to_name (obj->s.type));
- return;
- }
-
- hooklist = g_hash_table_lookup (obj->event_to_hooklist, name);
-
- if (hooklist == NULL) {
- g_warning
- ("camel_object_unhook_event: trying to unhook `%s' from an instance "
- "of `%s' with no hooks attached to that event.",
- name, camel_type_to_name (obj->s.type));
- return;
- }
-
- head = hooklist;
-
- while (hooklist) {
- CamelHookPair *pair = (CamelHookPair *) hooklist->data;
-
- if (pair->func == hook && pair->user_data == user_data) {
- g_free (hooklist->data);
- head = g_slist_remove_link (head, hooklist);
- g_slist_free_1 (hooklist);
- g_hash_table_insert (obj->event_to_hooklist, (char *) name,
- head);
- return;
- }
-
- hooklist = hooklist->next;
- }
-
- g_warning
- ("camel_object_unhook_event: cannot find hook/data pair %p/%p in an "
- "instance of `%s' attached to `%s'", hook, user_data,
- camel_type_to_name (obj->s.type), name);
-#endif
}
void
camel_object_trigger_event (CamelObject * obj, const char * name, void *event_data)
{
- CamelHookPair *pair;
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);
@@ -940,70 +899,47 @@ camel_object_trigger_event (CamelObject * obj, const char * name, void *event_da
camel_object_ref(obj);
hooks = camel_object_get_hooks(obj);
- if (prep == NULL_PREP_VALUE || prep(obj, event_data)) {
+ if ((prep == NULL_PREP_VALUE || prep(obj, event_data))
+ && 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)
- (pair->func) (obj, event_data, pair->data);
-
+ 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);
-
-#if 0
- if (obj->in_event) {
- g_warning("camel_object_trigger_event: trying to trigger `%s' in class "
- "`%s' while already triggering another event", name,
- camel_type_to_name (obj->s.type));
- return;
- }
-
- if (obj->classfuncs->event_to_preplist == NULL) {
- g_warning
- ("camel_object_trigger_event: trying to trigger `%s' in class "
- "`%s' with no defined events.", name,
- camel_type_to_name (obj->s.type));
- return;
- }
-
- prep = g_hash_table_lookup (obj->classfuncs->event_to_preplist, name);
-
- if (prep == NULL) {
- g_warning
- ("camel_object_trigger_event: trying to trigger undefined "
- "event `%s' in class `%s'.", name,
- camel_type_to_name (obj->s.type));
- return;
- }
-
- /* Ref so that it can't get destroyed in the event, which would
- * be Bad. And it's a valid ref anyway...
- */
-
- camel_object_ref (obj);
- obj->in_event = 1;
-
- if ((prep != NULL_PREP_VALUE && !prep (obj, event_data))
- || obj->event_to_hooklist == NULL) {
- obj->in_event = 0;
- camel_object_unref (obj);
- return;
- }
-
- hooklist = g_hash_table_lookup (obj->event_to_hooklist, name);
-
- while (hooklist && hooklist->data) {
- pair = hooklist->data;
- (pair->func) (obj, event_data, pair->user_data);
- hooklist = hooklist->next;
- }
-
- obj->in_event = 0;
- camel_object_unref (obj);
-#endif
}
/* ** Static helpers ****************************************************** */
generated by cgit (git 2.34.1) at 2024-11-18 17:04:12 +0800