We might as well take advantage of viralloc.h instead of open-coding
array management ourselves. While at it, I simplified several
places that were doing repetitive pointer chasing to use an
intermediate variable for legibility (some other places remain,
but they will disapper in later refactoring patches).
* src/conf/object_event_private.h (_virObjectEventCallbackList):
Use size_t for count.
* src/conf/object_event.c (_virObjectEventQueue): Likewise.
(virObjectEventCallbackListRemoveID): Use VIR_DELETE_ELEMENT.
(virObjectEventQueuePush, virObjectEventCallbackListAddID): Use
VIR_APPEND_ELEMENT.
(virObjectEventCallbackListEventID)
(virObjectEventStateDispatchCallbacks): Simplify code.
Signed-off-by: Eric Blake <eblake@xxxxxxxxxx>
---
src/conf/object_event.c | 108 ++++++++++++++++------------------------
src/conf/object_event_private.h | 2 +-
2 files changed, 44 insertions(+), 66 deletions(-)
diff --git a/src/conf/object_event.c b/src/conf/object_event.c
index 5173fdf..7c264f5 100644
--- a/src/conf/object_event.c
+++ b/src/conf/object_event.c
@@ -37,7 +37,7 @@
#define VIR_FROM_THIS VIR_FROM_NONE
struct _virObjectEventQueue {
- unsigned int count;
+ size_t count;
virObjectEventPtr *events;
};
@@ -97,7 +97,7 @@ virObjectEventCallbackListFree(virObjectEventCallbackListPtr list)
if (!list)
return;
- for (i=0; i<list->count; i++) {
+ for (i = 0; i < list->count; i++) {
virFreeCallback freecb = list->callbacks[i]->freecb;
if (freecb)
(*freecb)(list->callbacks[i]->opaque);
@@ -123,29 +123,19 @@ virObjectEventCallbackListRemoveID(virConnectPtr conn,
{
int ret = 0;
size_t i;
- for (i = 0; i < cbList->count; i++) {
- if (cbList->callbacks[i]->callbackID == callbackID &&
- cbList->callbacks[i]->conn == conn) {
- virFreeCallback freecb = cbList->callbacks[i]->freecb;
- if (freecb)
- (*freecb)(cbList->callbacks[i]->opaque);
- virObjectUnref(cbList->callbacks[i]->conn);
- if (cbList->callbacks[i]->meta)
- VIR_FREE(cbList->callbacks[i]->meta->name);
- VIR_FREE(cbList->callbacks[i]->meta);
- VIR_FREE(cbList->callbacks[i]);
-
- if (i < (cbList->count - 1))
- memmove(cbList->callbacks + i,
- cbList->callbacks + i + 1,
- sizeof(*(cbList->callbacks)) *
- (cbList->count - (i + 1)));
- if (VIR_REALLOC_N(cbList->callbacks,
- cbList->count - 1) < 0) {
- ; /* Failure to reduce memory allocation isn't fatal */
- }
- cbList->count--;
+ for (i = 0; i < cbList->count; i++) {
+ virObjectEventCallbackPtr cb = cbList->callbacks[i];
+
+ if (cb->callbackID == callbackID && cb->conn == conn) {
+ if (cb->freecb)
+ (*cb->freecb)(cb->opaque);
+ virObjectUnref(cb->conn);
+ if (cb->meta)
+ VIR_FREE(cb->meta->name);
+ VIR_FREE(cb->meta);
+ VIR_FREE(cb);
+ VIR_DELETE_ELEMENT(cbList->callbacks, i, cbList->count);
for (i = 0; i < cbList->count; i++) {
if (!cbList->callbacks[i]->deleted)
@@ -168,6 +158,7 @@ virObjectEventCallbackListMarkDeleteID(virConnectPtr conn,
{
int ret = 0;
size_t i;
+
for (i = 0; i < cbList->count; i++) {
if (cbList->callbacks[i]->callbackID == callbackID &&
cbList->callbacks[i]->conn == conn) {
@@ -247,7 +238,7 @@ virObjectEventCallbackListAddID(virConnectPtr conn,
{
virObjectEventCallbackPtr event;
size_t i;
- int ret = 0;
+ int ret = -1;
VIR_DEBUG("conn=%p cblist=%p uuid=%p name=%s id=%d "
"klass=%p eventID=%d callback=%p opaque=%p",
@@ -276,8 +267,9 @@ virObjectEventCallbackListAddID(virConnectPtr conn,
}
/* Allocate new event */
if (VIR_ALLOC(event) < 0)
- goto error;
- event->conn = conn;
+ goto cleanup;
+ event->conn = virObjectRef(conn);
+ event->callbackID = cbList->nextID++;
event->cb = callback;
event->klass = klass;
event->eventID = eventID;
@@ -286,25 +278,20 @@ virObjectEventCallbackListAddID(virConnectPtr conn,
if (name && uuid && id > 0) {
if (VIR_ALLOC(event->meta) < 0)
- goto error;
+ goto cleanup;
if (VIR_STRDUP(event->meta->name, name) < 0)
- goto error;
+ goto cleanup;
memcpy(event->meta->uuid, uuid, VIR_UUID_BUFLEN);
event->meta->id = id;
}
- /* Make space on list */
- if (VIR_REALLOC_N(cbList->callbacks, cbList->count + 1) < 0)
- goto error;
-
- virObjectRef(event->conn);
-
- cbList->callbacks[cbList->count] = event;
- cbList->count++;
+ if (callbackID)
+ *callbackID = event->callbackID;
- event->callbackID = cbList->nextID++;
+ if (VIR_APPEND_ELEMENT(cbList->callbacks, cbList->count, event) < 0)
+ goto cleanup;
- for (i = 0; i < cbList->count; i++) {
+ for (ret = 0, i = 0; i < cbList->count; i++) {
if (cbList->callbacks[i]->klass == klass &&
cbList->callbacks[i]->eventID == eventID &&
cbList->callbacks[i]->conn == conn &&
@@ -312,19 +299,15 @@ virObjectEventCallbackListAddID(virConnectPtr conn,
ret++;
}
- if (callbackID)
- *callbackID = event->callbackID;
-
- return ret;
-
-error:
+cleanup:
if (event) {
+ virObjectUnref(event->conn);
if (event->meta)
VIR_FREE(event->meta->name);
VIR_FREE(event->meta);
}
VIR_FREE(event);
- return -1;
+ return ret;
}
@@ -336,12 +319,13 @@ virObjectEventCallbackListEventID(virConnectPtr conn,
size_t i;
for (i = 0; i < cbList->count; i++) {
- if (cbList->callbacks[i]->deleted)
+ virObjectEventCallbackPtr cb = cbList->callbacks[i];
+
+ if (cb->deleted)
continue;
- if (cbList->callbacks[i]->callbackID == callbackID &&
- cbList->callbacks[i]->conn == conn)
- return cbList->callbacks[i]->eventID;
+ if (cb->callbackID == callbackID && cb->conn == conn)
+ return cb->eventID;
}
return -1;
@@ -562,17 +546,11 @@ static int
virObjectEventQueuePush(virObjectEventQueuePtr evtQueue,
virObjectEventPtr event)
{
- if (!evtQueue) {
+ if (!evtQueue)
return -1;
- }
- /* Make space on queue */
- if (VIR_REALLOC_N(evtQueue->events,
- evtQueue->count + 1) < 0)
+ if (VIR_APPEND_ELEMENT(evtQueue->events, evtQueue->count, event) < 0)
return -1;
-
- evtQueue->events[evtQueue->count] = event;
- evtQueue->count++;
return 0;
}
@@ -612,18 +590,17 @@ virObjectEventStateDispatchCallbacks(virObjectEventStatePtr state,
/* Cache this now, since we may be dropping the lock,
and have more callbacks added. We're guaranteed not
to have any removed */
- int cbCount = callbacks->count;
+ size_t cbCount = callbacks->count;
for (i = 0; i < cbCount; i++) {
- if (!virObjectEventDispatchMatchCallback(event, callbacks->callbacks[i]))
+ virObjectEventCallbackPtr cb = callbacks->callbacks[i];
+
+ if (!virObjectEventDispatchMatchCallback(event, cb))
continue;
/* Drop the lock whle dispatching, for sake of re-entrancy */
virObjectEventStateUnlock(state);
- event->dispatch(callbacks->callbacks[i]->conn,
- event,
- callbacks->callbacks[i]->cb,
- callbacks->callbacks[i]->opaque);
+ event->dispatch(cb->conn, event, cb->cb, cb->opaque);
virObjectEventStateLock(state);
}
}
@@ -637,7 +614,8 @@ virObjectEventStateQueueDispatch(virObjectEventStatePtr state,
size_t i;
for (i = 0; i < queue->count; i++) {
- virObjectEventStateDispatchCallbacks(state, queue->events[i], callbacks);
+ virObjectEventStateDispatchCallbacks(state, queue->events[i],
+ callbacks);
virObjectUnref(queue->events[i]);
}
VIR_FREE(queue->events);
diff --git a/src/conf/object_event_private.h b/src/conf/object_event_private.h
index d2e4666..59fb2b3 100644
--- a/src/conf/object_event_private.h
+++ b/src/conf/object_event_private.h
@@ -37,7 +37,7 @@ typedef virObjectMeta *virObjectMetaPtr;
struct _virObjectEventCallbackList {
unsigned int nextID;
- unsigned int count;
+ size_t count;
virObjectEventCallbackPtr *callbacks;
};
typedef struct _virObjectEventCallbackList virObjectEventCallbackList;
--
1.8.4.2
--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list