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From GitBox <...@apache.org>
Subject [GitHub] [celix] pnoltes commented on a change in pull request #286: Feature/async svc registration
Date Mon, 09 Nov 2020 19:30:09 GMT

pnoltes commented on a change in pull request #286:
URL: https://github.com/apache/celix/pull/286#discussion_r520067092



##########
File path: libs/framework/src/framework.c
##########
@@ -2015,67 +1934,112 @@ static void fw_handleEventRequest(celix_framework_t *framework, request_t*
reque
         for (int i = 0; i < celix_arrayList_size(localListeners); ++i) {
             fw_bundle_listener_pt listener = arrayList_get(localListeners, i);
 
-            bundle_event_t event;
-            memset(&event, 0, sizeof(event));
-            event.bnd = request->bndEntry->bnd;
-            event.type = request->eventType;
-            fw_invokeBundleListener(framework, listener->listener, &event, listener->bundle);
+            bundle_event_t bEvent;
+            memset(&bEvent, 0, sizeof(bEvent));
+            bEvent.bnd = event->bndEntry->bnd;
+            bEvent.type = event->bundleEvent;
+            fw_invokeBundleListener(framework, listener->listener, &bEvent, listener->bundle);
 
             fw_bundleListener_decreaseUseCount(listener);
         }
         celix_arrayList_destroy(localListeners);
-    } else  if (request->type == FRAMEWORK_EVENT_TYPE) {
+    } else if (event->type == CELIX_FRAMEWORK_EVENT_TYPE) {
+        //fw_log(framework->logger, CELIX_LOG_LEVEL_TRACE, "Handling fw event");
         celixThreadMutex_lock(&framework->frameworkListenersLock);
-        //TODO refactor use of framework listeners to use a useCount + conditition.
         for (int i = 0; i < celix_arrayList_size(framework->frameworkListeners); ++i)
{
             fw_framework_listener_pt listener = celix_arrayList_get(framework->frameworkListeners,
i);
-            framework_event_t event;
-            memset(&event, 0, sizeof(event));
-            event.type = request->eventType;
-            event.error = request->error;
-            event.errorCode = request->errorCode;
+            framework_event_t fEvent;
+            memset(&fEvent, 0, sizeof(fEvent));
+            fEvent.type = event->fwEvent;
+            fEvent.error = event->error;
+            fEvent.errorCode = event->errorCode;
 
-            fw_invokeFrameworkListener(framework, listener->listener, &event, listener->bundle);
+            fw_invokeFrameworkListener(framework, listener->listener, &fEvent, listener->bundle);
         }
         celixThreadMutex_unlock(&framework->frameworkListenersLock);
+    } else if (event->type == CELIX_REGISTER_SERVICE_EVENT) {
+        //fw_log(framework->logger, CELIX_LOG_LEVEL_TRACE, "Handling fw service registration
event for service '%s' with svc id %li", event->serviceName, event->registerServiceId);
+        service_registration_t* reg = NULL;
+        celix_status_t status;
+        if (event->factory != NULL) {
+            status = celix_serviceRegistry_registerServiceFactory(framework->registry,
event->bndEntry->bnd, event->serviceName, event->factory, event->properties,
event->registerServiceId, &reg);
+        } else {
+            status = celix_serviceRegistry_registerService(framework->registry, event->bndEntry->bnd,
event->serviceName, event->svc, event->properties, event->registerServiceId, &reg);
+        }
+        if (status != CELIX_SUCCESS) {
+            fw_log(framework->logger, CELIX_LOG_LEVEL_ERROR, "Could not register service
async. svc name is %s, error is %s", event->serviceName, celix_strerror(status));
+        } else if (event->registerCallback != NULL) {
+            event->registerCallback(event->registerData, serviceRegistration_getServiceId(reg));
+        }
+    } else if (event->type == CELIX_UNREGISTER_SERVICE_EVENT) {
+        //fw_log(framework->logger, CELIX_LOG_LEVEL_TRACE, "Handling fw service unregister
event for service id %li", event->unregisterServiceId);
+        celix_serviceRegistry_unregisterService(framework->registry, event->bndEntry->bnd,
event->unregisterServiceId);
+    } else if (event->type == CELIX_GENERIC_EVENT) {
+        //fw_log(framework->logger, CELIX_LOG_LEVEL_TRACE, "Handling event %s", event->eventName);
+        if (event->genericProcess != NULL) {
+            event->genericProcess(event->genericProcessData);
+        }
+    }
+
+    if (event->doneCallback != NULL) {
+        event->doneCallback(event->doneData);
     }
 }
 
-static inline void fw_handleEvents(celix_framework_t* framework, celix_array_list_t* localRequests)
{
+static inline celix_framework_event_t* fw_topEventFromQueue(celix_framework_t* fw) {
+    celix_framework_event_t* e = NULL;
+    celixThreadMutex_lock(&fw->dispatcher.mutex);
+    if (fw->dispatcher.eventQueueSize > 0) {
+        e = &fw->dispatcher.eventQueue[fw->dispatcher.eventQueueFirstEntry];
+    } else if (celix_arrayList_size(fw->dispatcher.dynamicEventQueue) > 0) {
+        e = celix_arrayList_get(fw->dispatcher.dynamicEventQueue, 0);
+    }
+    celixThreadMutex_unlock(&fw->dispatcher.mutex);
+    return e;
+}
+
+static inline bool fw_removeTopEventFromQueue(celix_framework_t* fw) {
+    bool dynamicallyAllocated = false;
+    celixThreadMutex_lock(&fw->dispatcher.mutex);
+    if (fw->dispatcher.eventQueueSize > 0) {
+        fw->dispatcher.eventQueueFirstEntry = (fw->dispatcher.eventQueueFirstEntry+1)
% CELIX_FRAMEWORK_STATIC_EVENT_QUEUE_SIZE;
+        fw->dispatcher.eventQueueSize -= 1;

Review comment:
       I agree using a existing ring buffer would be preferable. 
   
   The c-ringbuf has no license, so this is not an option. 
   I was hoping for something like freebsd queue (see `man queue`), but this has no ring buffer.

   There is a buf_ring from freebsd, but this is not "header (marcro) only". 
   
   So for this PR I would like to keep the current ring buffer usage. 




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