[libvirt] [PATCH 23/34] Add object event namespaces for the event IDs

[Cédric Bosdonnat]

Each unique event ID will thus be composed by 1 byte for the namespace
and 1 byte for a namespace-specific ID. The namespace for domain event
needs to be 0 for compatibility reasons.
---
 include/libvirt/libvirt.h.in |  8 ++++++++
 src/conf/domain_event.c      | 10 ++++++++--
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index 5aad75c..25ab777 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -4961,6 +4961,14 @@ typedef enum {
 } virDomainEventID;
 
 
+/** Event IDs are computed in the following way:
+    virEventNamespaceID << 8 + vir*EventId
+  */
+typedef enum {
+    VIR_EVENT_NAMESPACE_DOMAIN = 0, /* 0 to keep value of virDomainEventId unchanged */
+} virEventNamespaceID;
+
+
 /* Use VIR_DOMAIN_EVENT_CALLBACK() to cast the 'cb' parameter  */
 int virConnectDomainEventRegisterAny(virConnectPtr conn,
                                      virDomainPtr dom, /* Optional, to filter */
diff --git a/src/conf/domain_event.c b/src/conf/domain_event.c
index d4ecc23..d78f3ea 100644
--- a/src/conf/domain_event.c
+++ b/src/conf/domain_event.c
@@ -1844,11 +1844,17 @@ virObjectEventStateDispatchFunc(virConnectPtr conn,
                                 void *opaque)
 {
     virObjectEventStatePtr state = opaque;
+    virEventNamespaceID namespace = (event->eventID & 0xFF00) >> 8;
 
     /* Drop the lock whle dispatching, for sake of re-entrancy */
     virObjectEventStateUnlock(state);
-    virDomainEventDispatchDefaultFunc(conn, event,
-            VIR_DOMAIN_EVENT_CALLBACK(cb), cbopaque, NULL);
+    switch (namespace)
+    {
+        case VIR_EVENT_NAMESPACE_DOMAIN:
+            virDomainEventDispatchDefaultFunc(conn, event,
+                    VIR_DOMAIN_EVENT_CALLBACK(cb), cbopaque, NULL);
+            break;
+    }
     virObjectEventStateLock(state);
 }
 
-- 
1.8.4.2