[libvirt] [PATCH 07/34] Created virObjectEventStateRegisterID
Cédric Bosdonnat
cbosdonnat at suse.com
Fri Nov 29 15:18:43 UTC 2013
but kept virDomainEventStateRegisterID as a convenience wrapper around
this new function.
---
src/conf/domain_event.c | 125 +++++++++++++++++++++++++++++++----------------
src/conf/domain_event.h | 25 ++++++++++
src/libvirt_private.syms | 1 +
3 files changed, 110 insertions(+), 41 deletions(-)
diff --git a/src/conf/domain_event.c b/src/conf/domain_event.c
index 00e20c2..fa5c190 100644
--- a/src/conf/domain_event.c
+++ b/src/conf/domain_event.c
@@ -32,6 +32,8 @@
#define VIR_FROM_THIS VIR_FROM_NONE
+#define VIR_OBJECT_EVENT_CALLBACK(cb) ((virConnectObjectEventGenericCallback)(cb))
+
struct _virObjectMeta {
int id;
char *name;
@@ -68,7 +70,7 @@ struct _virObjectEventCallback {
int eventID;
virConnectPtr conn;
virObjectMetaPtr meta;
- virConnectDomainEventGenericCallback cb;
+ virConnectObjectEventGenericCallback cb;
void *opaque;
virFreeCallback freecb;
int deleted;
@@ -168,7 +170,7 @@ virDomainEventCallbackListRemove(virConnectPtr conn,
int ret = 0;
size_t i;
for (i = 0; i < cbList->count; i++) {
- if (cbList->callbacks[i]->cb == VIR_DOMAIN_EVENT_CALLBACK(callback) &&
+ if (cbList->callbacks[i]->cb == VIR_OBJECT_EVENT_CALLBACK(callback) &&
cbList->callbacks[i]->eventID == VIR_DOMAIN_EVENT_ID_LIFECYCLE &&
cbList->callbacks[i]->conn == conn) {
virFreeCallback freecb = cbList->callbacks[i]->freecb;
@@ -261,7 +263,7 @@ virDomainEventCallbackListMarkDelete(virConnectPtr conn,
int ret = 0;
size_t i;
for (i = 0; i < cbList->count; i++) {
- if (cbList->callbacks[i]->cb == VIR_DOMAIN_EVENT_CALLBACK(callback) &&
+ if (cbList->callbacks[i]->cb == VIR_OBJECT_EVENT_CALLBACK(callback) &&
cbList->callbacks[i]->eventID == VIR_DOMAIN_EVENT_ID_LIFECYCLE &&
cbList->callbacks[i]->conn == conn) {
cbList->callbacks[i]->deleted = 1;
@@ -355,7 +357,7 @@ virObjectEventCallbackListAddID(virConnectPtr conn,
const char *name,
int id,
int eventID,
- virConnectDomainEventGenericCallback callback,
+ virConnectObjectEventGenericCallback callback,
void *opaque,
virFreeCallback freecb,
int *callbackID)
@@ -371,7 +373,7 @@ virObjectEventCallbackListAddID(virConnectPtr conn,
/* check if we already have this callback on our list */
for (i = 0; i < cbList->count; i++) {
- if (cbList->callbacks[i]->cb == VIR_DOMAIN_EVENT_CALLBACK(callback) &&
+ if (cbList->callbacks[i]->cb == VIR_OBJECT_EVENT_CALLBACK(callback) &&
cbList->callbacks[i]->eventID == eventID &&
cbList->callbacks[i]->conn == conn &&
((uuid && cbList->callbacks[i]->meta &&
@@ -453,7 +455,7 @@ virDomainEventCallbackListAdd(virConnectPtr conn,
{
return virObjectEventCallbackListAddID(conn, cbList, NULL, NULL, 0,
VIR_DOMAIN_EVENT_ID_LIFECYCLE,
- VIR_DOMAIN_EVENT_CALLBACK(callback),
+ VIR_OBJECT_EVENT_CALLBACK(callback),
opaque, freecb, NULL);
}
@@ -1235,9 +1237,9 @@ virObjectEventQueuePush(virObjectEventQueuePtr evtQueue,
}
-typedef void (*virDomainEventDispatchFunc)(virConnectPtr conn,
+typedef void (*virObjectEventDispatchFunc)(virConnectPtr conn,
virDomainEventPtr event,
- virConnectDomainEventGenericCallback cb,
+ virConnectObjectEventGenericCallback cb,
void *cbopaque,
void *opaque);
@@ -1400,7 +1402,7 @@ static int virDomainEventDispatchMatchCallback(virDomainEventPtr event,
static void
virDomainEventDispatch(virDomainEventPtr event,
virObjectEventCallbackListPtr callbacks,
- virDomainEventDispatchFunc dispatch,
+ virObjectEventDispatchFunc dispatch,
void *opaque)
{
size_t i;
@@ -1425,7 +1427,7 @@ virDomainEventDispatch(virDomainEventPtr event,
static void
virObjectEventQueueDispatch(virObjectEventQueuePtr queue,
virObjectEventCallbackListPtr callbacks,
- virDomainEventDispatchFunc dispatch,
+ virObjectEventDispatchFunc dispatch,
void *opaque)
{
size_t i;
@@ -1463,7 +1465,7 @@ virObjectEventStateQueue(virObjectEventStatePtr state,
static void
virObjectEventStateDispatchFunc(virConnectPtr conn,
virDomainEventPtr event,
- virConnectDomainEventGenericCallback cb,
+ virConnectObjectEventGenericCallback cb,
void *cbopaque,
void *opaque)
{
@@ -1471,7 +1473,8 @@ virObjectEventStateDispatchFunc(virConnectPtr conn,
/* Drop the lock whle dispatching, for sake of re-entrancy */
virObjectEventStateUnlock(state);
- virDomainEventDispatchDefaultFunc(conn, event, cb, cbopaque, NULL);
+ virDomainEventDispatchDefaultFunc(conn, event,
+ VIR_DOMAIN_EVENT_CALLBACK(cb), cbopaque, NULL);
virObjectEventStateLock(state);
}
@@ -1506,6 +1509,65 @@ virObjectEventStateFlush(virObjectEventStatePtr state)
/**
+ * virObjectEventStateRegisterID:
+ * @conn: connection to associate with callback
+ * @state: domain event state
+ * @eventID: ID of the event type to register for
+ * @cb: function to remove from event
+ * @opaque: data blob to pass to callback
+ * @freecb: callback to free @opaque
+ * @callbackID: filled with callback ID
+ *
+ * Register the function @callbackID with connection @conn,
+ * from @state, for events of type @eventID.
+ *
+ * Returns: the number of callbacks now registered, or -1 on error
+ */
+int
+virObjectEventStateRegisterID(virConnectPtr conn,
+ virObjectEventStatePtr state,
+ unsigned char uuid[VIR_UUID_BUFLEN],
+ const char *name,
+ int id,
+ int eventID,
+ virConnectObjectEventGenericCallback cb,
+ void *opaque,
+ virFreeCallback freecb,
+ int *callbackID)
+{
+ int ret = -1;
+
+ virObjectEventStateLock(state);
+
+ if ((state->callbacks->count == 0) &&
+ (state->timer == -1) &&
+ (state->timer = virEventAddTimeout(-1,
+ virDomainEventTimer,
+ state,
+ NULL)) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("could not initialize domain event timer"));
+ goto cleanup;
+ }
+
+ ret = virObjectEventCallbackListAddID(conn, state->callbacks,
+ uuid, name, id, eventID, cb, opaque, freecb,
+ callbackID);
+
+ if (ret == -1 &&
+ state->callbacks->count == 0 &&
+ state->timer != -1) {
+ virEventRemoveTimeout(state->timer);
+ state->timer = -1;
+ }
+
+cleanup:
+ virObjectEventStateUnlock(state);
+ return ret;
+}
+
+
+/**
* virDomainEventStateRegister:
* @conn: connection to associate with callback
* @state: object event state
@@ -1581,35 +1643,16 @@ virDomainEventStateRegisterID(virConnectPtr conn,
virFreeCallback freecb,
int *callbackID)
{
- int ret = -1;
-
- virObjectEventStateLock(state);
-
- if ((state->callbacks->count == 0) &&
- (state->timer == -1) &&
- (state->timer = virEventAddTimeout(-1,
- virDomainEventTimer,
- state,
- NULL)) < 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("could not initialize domain event timer"));
- goto cleanup;
- }
-
- ret = virObjectEventCallbackListAddID(conn, state->callbacks, dom->uuid,
- dom->name, dom->id, eventID, cb,
- opaque, freecb, callbackID);
-
- if (ret == -1 &&
- state->callbacks->count == 0 &&
- state->timer != -1) {
- virEventRemoveTimeout(state->timer);
- state->timer = -1;
- }
-
-cleanup:
- virObjectEventStateUnlock(state);
- return ret;
+ if (dom)
+ return virObjectEventStateRegisterID(conn, state, dom->uuid, dom->name,
+ dom->id, eventID,
+ VIR_OBJECT_EVENT_CALLBACK(cb),
+ opaque, freecb, callbackID);
+ else
+ return virObjectEventStateRegisterID(conn, state, NULL, NULL, 0,
+ eventID,
+ VIR_OBJECT_EVENT_CALLBACK(cb),
+ opaque, freecb, callbackID);
}
diff --git a/src/conf/domain_event.h b/src/conf/domain_event.h
index 65a17ad..937b113 100644
--- a/src/conf/domain_event.h
+++ b/src/conf/domain_event.h
@@ -143,6 +143,19 @@ void virObjectEventStateFree(virObjectEventStatePtr state);
virObjectEventStatePtr
virObjectEventStateNew(void);
+/*
+ * virConnectObjectEventGenericCallback:
+ * @conn: the connection pointer
+ * @obj: the object pointer
+ * @opaque: application specified data
+ *
+ * A generic object event callback handler. Specific events usually
+ * have a customization with extra parameters
+ */
+typedef void (*virConnectObjectEventGenericCallback)(virConnectPtr conn,
+ void *obj,
+ void *opaque);
+
void
virObjectEventStateQueue(virObjectEventStatePtr state,
virDomainEventPtr event)
@@ -168,6 +181,18 @@ virDomainEventStateDeregister(virConnectPtr conn,
virConnectDomainEventCallback callback)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
int
+virObjectEventStateRegisterID(virConnectPtr conn,
+ virObjectEventStatePtr state,
+ unsigned char uuid[VIR_UUID_BUFLEN],
+ const char *name,
+ int id,
+ int eventID,
+ virConnectObjectEventGenericCallback cb,
+ void *opaque,
+ virFreeCallback freecb,
+ int *callbackID)
+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(7);
+int
virObjectEventStateDeregisterID(virConnectPtr conn,
virObjectEventStatePtr state,
int callbackID)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 3933b40..a14e290 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -455,6 +455,7 @@ virObjectEventStateEventID;
virObjectEventStateFree;
virObjectEventStateNew;
virObjectEventStateQueue;
+virObjectEventStateRegisterID;
# conf/domain_nwfilter.h
--
1.8.4.2
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