diff --git a/configure.ac b/configure.ac
index c086b58f..e7d5c542 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.69])
-AC_INIT([thapi], [0.0.10], [bvideau@anl.gov])
+AC_INIT([thapi], [0.0.11], [bvideau@anl.gov])
 AC_CONFIG_SRCDIR([opencl/tracer_opencl_helpers.include.c])
 AC_CONFIG_HEADERS([utils/config.h])
 
@@ -70,7 +70,7 @@ PKG_CHECK_MODULES([PROTOBUF], [protobuf >= 3.0])
 AX_RUBY_EXTENSION([cast-to-yaml], [yes])
 AX_RUBY_EXTENSION([nokogiri], [yes])
 AX_RUBY_EXTENSION([babeltrace2], [yes])
-AX_RUBY_EXTENSION([metababel >= 0.0.5], [yes])
+AX_RUBY_EXTENSION([metababel >= 1.0.0], [yes])
 
 # Checks for header files.
 AC_CHECK_HEADERS([inttypes.h stddef.h stdint.h stdlib.h string.h unistd.h])
diff --git a/xprof/btx_aggreg.cpp b/xprof/btx_aggreg.cpp
index d340f340..5100f611 100644
--- a/xprof/btx_aggreg.cpp
+++ b/xprof/btx_aggreg.cpp
@@ -17,11 +17,16 @@ struct aggreg_s {
 };
 using aggreg_t = struct aggreg_s;
 
-static void initialize_usr_data_callback(void *btx_handle, void **usr_data) {
+static void initialize_component_callback(void **usr_data) {
   *usr_data = new aggreg_t;
 }
 
-static void finalize_usr_data_callback(void *btx_handle, void *usr_data) {
+static void finalize_component_callback(void *usr_data) {
+  auto *data = static_cast<aggreg_t *>(usr_data);
+  delete data;
+}
+
+static void finalize_processing_callback(void *btx_handle, void *usr_data) {
   auto *data = static_cast<aggreg_t *>(usr_data);
   // Host
   for (const auto &[hptb_function_name, t] : data->host) {
@@ -42,8 +47,6 @@ static void finalize_usr_data_callback(void *btx_handle, void *usr_data) {
     btx_push_message_aggreg_device(btx_handle, hostname.c_str(), vpid, vtid, name.c_str(), t.min,
                                    t.max, t.duration, t.count, did, sdid, metadata.c_str());
   }
-
-  delete data;
 }
 
 static void host_usr_callback(void *btx_handle, void *usr_data, const char *hostname, int64_t vpid,
@@ -71,9 +74,9 @@ static void device_usr_callback(void *btx_handle, void *usr_data, const char *ho
 }
 
 void btx_register_usr_callbacks(void *btx_handle) {
-
-  btx_register_callbacks_initialize_usr_data(btx_handle, &initialize_usr_data_callback);
-  btx_register_callbacks_finalize_usr_data(btx_handle, &finalize_usr_data_callback);
+  btx_register_callbacks_initialize_component(btx_handle, &initialize_component_callback);
+  btx_register_callbacks_finalize_processing(btx_handle, &finalize_processing_callback);
+  btx_register_callbacks_finalize_component(btx_handle, &finalize_component_callback);
 
   btx_register_callbacks_lttng_host(btx_handle, &host_usr_callback);
   btx_register_callbacks_lttng_traffic(btx_handle, &traffic_usr_callback);
diff --git a/xprof/btx_tally.cpp b/xprof/btx_tally.cpp
index 940f7cb8..eb9f27d6 100644
--- a/xprof/btx_tally.cpp
+++ b/xprof/btx_tally.cpp
@@ -173,7 +173,7 @@ static void print_metadata(std::vector<std::string> metadata) {
     std::cout << value << std::endl;
 }
 
-static void initialize_usr_data_callback(void *btx_handle, void **usr_data) {
+static void initialize_component_callback(void **usr_data) {
   /* User allocates its own data structure */
   auto *data = new tally_dispatch_t;
   *usr_data = data;
@@ -190,7 +190,7 @@ static void initialize_usr_data_callback(void *btx_handle, void **usr_data) {
   };
 }
 
-static void read_params_callaback(void *btx_handle, void *usr_data, btx_params_t *usr_params) {
+static void read_params_callback(void *usr_data, btx_params_t *usr_params) {
 
   auto *data = static_cast<tally_dispatch_t *>(usr_data);
   data->params = usr_params;
@@ -209,7 +209,7 @@ static void read_params_callaback(void *btx_handle, void *usr_data, btx_params_t
   }
 }
 
-static void finalize_usr_data_callback(void *btx_handle, void *usr_data) {
+static void finalize_component_callback(void *usr_data) {
 
   auto *data = static_cast<tally_dispatch_t *>(usr_data);
 
@@ -345,9 +345,9 @@ static void ust_thapi_metadata_usr_callback(void *btx_handle, void *usr_data, co
 }
 
 void btx_register_usr_callbacks(void *btx_handle) {
-  btx_register_callbacks_initialize_usr_data(btx_handle, &initialize_usr_data_callback);
-  btx_register_callbacks_read_params(btx_handle, &read_params_callaback);
-  btx_register_callbacks_finalize_usr_data(btx_handle, &finalize_usr_data_callback);
+  btx_register_callbacks_initialize_component(btx_handle, &initialize_component_callback);
+  btx_register_callbacks_read_params(btx_handle, &read_params_callback);
+  btx_register_callbacks_finalize_component(btx_handle, &finalize_component_callback);
 
   btx_register_callbacks_lttng_device_name(btx_handle, &device_name_usr_callback);
   btx_register_callbacks_lttng_ust_thapi_metadata(btx_handle, &ust_thapi_metadata_usr_callback);
diff --git a/xprof/btx_timeline.cpp b/xprof/btx_timeline.cpp
index 0c9f3d0d..278a4060 100644
--- a/xprof/btx_timeline.cpp
+++ b/xprof/btx_timeline.cpp
@@ -297,12 +297,11 @@ static void add_event_async(timeline_dispatch_t *dispatch, std::string hostname,
   add_event_end(dispatch, track_uuid, end);
 }
 
-void btx_initialize_usr_data(void *btx_handle, void **usr_data) {
-
+void btx_initialize_component_callback(void **usr_data) {
   *usr_data = new timeline_dispatch_t;
 }
 
-void btx_finalize_usr_data(void *btx_handle, void *usr_data) {
+void btx_finalize_component_callback(void *usr_data) {
   auto *dispatch = static_cast<timeline_dispatch_t *>(usr_data);
   for (auto &[uuid, s] : dispatch->uuid2stack) {
     while (!s.empty()) {
@@ -357,6 +356,6 @@ void btx_register_usr_callbacks(void *btx_handle) {
   btx_register_callbacks_lttng_device(btx_handle, &device_usr_callback);
   btx_register_callbacks_lttng_frequency(btx_handle, &frequency_usr_callback);
   btx_register_callbacks_lttng_power(btx_handle, &power_usr_callback);
-  btx_register_callbacks_initialize_usr_data(btx_handle, &btx_initialize_usr_data);
-  btx_register_callbacks_finalize_usr_data(btx_handle, &btx_finalize_usr_data);
+  btx_register_callbacks_initialize_component(btx_handle, &btx_initialize_component_callback);
+  btx_register_callbacks_finalize_component(btx_handle, &btx_finalize_component_callback);
 }