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From GitBox <...@apache.org>
Subject [GitHub] [celix] abroekhuis commented on a change in pull request #244: Adds support for reserving service id
Date Tue, 09 Jun 2020 18:17:44 GMT

abroekhuis commented on a change in pull request #244:
URL: https://github.com/apache/celix/pull/244#discussion_r437626913



##########
File path: libs/framework/include/celix_bundle_context.h
##########
@@ -126,8 +126,38 @@ typedef struct celix_service_registration_options {
      * for this.
      */
     const char *serviceVersion OPTS_INIT;
+
+    /**
+     * If set to > 0, this svc id will be used to register the service.
+     * The reservedSvcId should be reserved with a call to celix_bundleContext_reserveSvcId
+     */
+    long reservedSvcId OPTS_INIT;
 } celix_service_registration_options_t;
 
+/**
+ * Reserves a service id, which is expected to be used to register a service in the future.
+ *
+ * If a celix_bundleContext_unregisterService with the reserved service id is called earlier
than
+ * the celix_bundleContext_registerServiceWithOptions with the reserved service, the registration
will be be cancelled.
+ * This means then when the expected celix_bundleContext_registerServiceWithOptions call
happens this will not
+ * result in a service registration and a  -2 will be returned as service id.
+ *
+ * Subsequent calls to celix_bundleContext_registerServiceWithOptions for an already cancelled
service id will
+ * return a -1 error code (and a 'Invalid reservedSvcId' error log entry will be logged).

Review comment:
       Shouldn't that be a -2?




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