src.ctf.fs: make get_stream_instance_unique_name return `const std::string &`
[babeltrace.git] / src / plugins / ctf / fs-src / fs.cpp
index d6d6bf5349ba8e248711520956ef07ed7423308c..ed98c9619178454637e020ffc743b764dd7ade78 100644 (file)
@@ -35,15 +35,6 @@ struct tracer_info
     int64_t patch;
 };
 
-static void ctf_fs_msg_iter_data_destroy(struct ctf_fs_msg_iter_data *msg_iter_data)
-{
-    if (!msg_iter_data) {
-        return;
-    }
-
-    delete msg_iter_data;
-}
-
 static bt_message_iterator_class_next_method_status
 ctf_fs_iterator_next_one(struct ctf_fs_msg_iter_data *msg_iter_data, const bt_message **out_msg)
 {
@@ -176,8 +167,8 @@ ctf_fs_iterator_seek_beginning(bt_self_message_iterator *it)
 
 void ctf_fs_iterator_finalize(bt_self_message_iterator *it)
 {
-    ctf_fs_msg_iter_data_destroy(
-        (struct ctf_fs_msg_iter_data *) bt_self_message_iterator_get_data(it));
+    ctf_fs_msg_iter_data::UP {
+        (static_cast<ctf_fs_msg_iter_data *>(bt_self_message_iterator_get_data(it)))};
 }
 
 static bt_message_iterator_class_initialize_method_status
@@ -211,7 +202,7 @@ ctf_fs_iterator_init(bt_self_message_iterator *self_msg_iter,
             bt_self_component_port_output_as_self_component_port(self_port));
         BT_ASSERT(port_data);
 
-        ctf_fs_msg_iter_data *msg_iter_data = new ctf_fs_msg_iter_data {self_msg_iter};
+        auto msg_iter_data = bt2s::make_unique<ctf_fs_msg_iter_data>(self_msg_iter);
         msg_iter_data->ds_file_group = port_data->ds_file_group;
 
         medium_status = ctf_fs_ds_group_medops_data_create(msg_iter_data->ds_file_group,
@@ -247,8 +238,7 @@ ctf_fs_iterator_init(bt_self_message_iterator *self_msg_iter,
             bt_self_message_iterator_configuration_set_can_seek_forward(config, true);
         }
 
-        bt_self_message_iterator_set_data(self_msg_iter, msg_iter_data);
-        msg_iter_data = NULL;
+        bt_self_message_iterator_set_data(self_msg_iter, msg_iter_data.release());
 
         status = BT_MESSAGE_ITERATOR_CLASS_INITIALIZE_METHOD_STATUS_OK;
         goto end;
@@ -257,7 +247,6 @@ error:
         bt_self_message_iterator_set_data(self_msg_iter, NULL);
 
 end:
-        ctf_fs_msg_iter_data_destroy(msg_iter_data);
         return status;
     } catch (const std::bad_alloc&) {
         return BT_MESSAGE_ITERATOR_CLASS_INITIALIZE_METHOD_STATUS_MEMORY_ERROR;
@@ -266,31 +255,6 @@ end:
     }
 }
 
-static void ctf_fs_trace_destroy(struct ctf_fs_trace *ctf_fs_trace)
-{
-    if (!ctf_fs_trace) {
-        return;
-    }
-
-    BT_TRACE_PUT_REF_AND_RESET(ctf_fs_trace->trace);
-
-    if (ctf_fs_trace->path) {
-        g_string_free(ctf_fs_trace->path, TRUE);
-    }
-
-    if (ctf_fs_trace->metadata) {
-        ctf_fs_metadata_fini(ctf_fs_trace->metadata);
-        delete ctf_fs_trace->metadata;
-    }
-
-    delete ctf_fs_trace;
-}
-
-void ctf_fs_trace_deleter::operator()(ctf_fs_trace * const trace) noexcept
-{
-    ctf_fs_trace_destroy(trace);
-}
-
 ctf_fs_component::UP ctf_fs_component_create(const bt2c::Logger& parentLogger)
 {
     return bt2s::make_unique<ctf_fs_component>(parentLogger);
@@ -322,7 +286,7 @@ bt2c::GCharUP ctf_fs_make_port_name(struct ctf_fs_ds_file_group *ds_file_group)
         bt_uuid_to_str(ds_file_group->ctf_fs_trace->metadata->tc->uuid, uuid_str);
         g_string_assign(name, uuid_str);
     } else {
-        g_string_assign(name, ds_file_group->ctf_fs_trace->path->str);
+        g_string_assign(name, ds_file_group->ctf_fs_trace->path.c_str());
     }
 
     /*
@@ -627,11 +591,11 @@ static int create_ds_file_groups(struct ctf_fs_trace *ctf_fs_trace)
     GDir *dir = NULL;
 
     /* Check each file in the path directory, except specific ones */
-    dir = g_dir_open(ctf_fs_trace->path->str, 0, &error);
+    dir = g_dir_open(ctf_fs_trace->path.c_str(), 0, &error);
     if (!dir) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs_trace->logger,
-                                     "Cannot open directory `{}`: {} (code {})",
-                                     ctf_fs_trace->path->str, error->message, error->code);
+                                     "Cannot open directory `{}`: {} (code {})", ctf_fs_trace->path,
+                                     error->message, error->code);
         goto error;
     }
 
@@ -640,14 +604,14 @@ static int create_ds_file_groups(struct ctf_fs_trace *ctf_fs_trace)
             /* Ignore the metadata stream. */
             BT_CPPLOGI_SPEC(ctf_fs_trace->logger,
                             "Ignoring metadata file `{}" G_DIR_SEPARATOR_S "{}`",
-                            ctf_fs_trace->path->str, basename);
+                            ctf_fs_trace->path, basename);
             continue;
         }
 
         if (basename[0] == '.') {
             BT_CPPLOGI_SPEC(ctf_fs_trace->logger,
-                            "Ignoring hidden file `{}" G_DIR_SEPARATOR_S "{}`",
-                            ctf_fs_trace->path->str, basename);
+                            "Ignoring hidden file `{}" G_DIR_SEPARATOR_S "{}`", ctf_fs_trace->path,
+                            basename);
             continue;
         }
 
@@ -657,12 +621,12 @@ static int create_ds_file_groups(struct ctf_fs_trace *ctf_fs_trace)
             BT_CPPLOGE_APPEND_CAUSE_SPEC(
                 ctf_fs_trace->logger,
                 "Cannot create stream file object for file `{}" G_DIR_SEPARATOR_S "{}`",
-                ctf_fs_trace->path->str, basename);
+                ctf_fs_trace->path, basename);
             goto error;
         }
 
         /* Create full path string. */
-        file->path = fmt::format("{}" G_DIR_SEPARATOR_S "{}", ctf_fs_trace->path->str, basename);
+        file->path = fmt::format("{}" G_DIR_SEPARATOR_S "{}", ctf_fs_trace->path, basename);
 
         if (!g_file_test(file->path.c_str(), G_FILE_TEST_IS_REGULAR)) {
             BT_CPPLOGI_SPEC(ctf_fs_trace->logger, "Ignoring non-regular file `{}`", file->path);
@@ -760,15 +724,10 @@ static ctf_fs_trace::UP ctf_fs_trace_create(const char *path, const char *name,
                                             const bt2c::Logger& parentLogger)
 {
     int ret;
-
     ctf_fs_trace::UP ctf_fs_trace {new struct ctf_fs_trace(parentLogger)};
-    ctf_fs_trace->path = g_string_new(path);
-    if (!ctf_fs_trace->path) {
-        goto error;
-    }
 
-    ctf_fs_trace->metadata = new ctf_fs_metadata;
-    ctf_fs_metadata_init(ctf_fs_trace->metadata);
+    ctf_fs_trace->path = path;
+    ctf_fs_trace->metadata = bt2s::make_unique<ctf_fs_metadata>();
 
     ret = ctf_fs_metadata_set_trace_class(selfComp, ctf_fs_trace.get(), clkClsCfg);
     if (ret) {
@@ -776,19 +735,22 @@ static ctf_fs_trace::UP ctf_fs_trace_create(const char *path, const char *name,
     }
 
     if (ctf_fs_trace->metadata->trace_class) {
-        ctf_fs_trace->trace = bt_trace_create(ctf_fs_trace->metadata->trace_class);
-        if (!ctf_fs_trace->trace) {
+        bt_trace *trace = bt_trace_create(ctf_fs_trace->metadata->trace_class->libObjPtr());
+        if (!trace) {
             goto error;
         }
+
+        ctf_fs_trace->trace = bt2::Trace::Shared::createWithoutRef(trace);
     }
 
     if (ctf_fs_trace->trace) {
-        ret = ctf_trace_class_configure_ir_trace(ctf_fs_trace->metadata->tc, ctf_fs_trace->trace);
+        ret = ctf_trace_class_configure_ir_trace(ctf_fs_trace->metadata->tc,
+                                                 ctf_fs_trace->trace->libObjPtr());
         if (ret) {
             goto error;
         }
 
-        ret = set_trace_name(ctf_fs_trace->trace, name, ctf_fs_trace->logger);
+        ret = set_trace_name(ctf_fs_trace->trace->libObjPtr(), name, ctf_fs_trace->logger);
         if (ret) {
             goto error;
         }
@@ -840,9 +802,8 @@ static int ctf_fs_component_create_ctf_fs_trace_one_path(struct ctf_fs_component
 {
     ctf_fs_trace::UP ctf_fs_trace;
     int ret;
-    GString *norm_path;
 
-    norm_path = bt_common_normalize_path(path_param, NULL);
+    bt2c::GStringUP norm_path {bt_common_normalize_path(path_param, NULL)};
     if (!norm_path) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs->logger, "Failed to normalize path: `{}`.", path_param);
         goto error;
@@ -884,10 +845,6 @@ error:
     ret = -1;
 
 end:
-    if (norm_path) {
-        g_string_free(norm_path, TRUE);
-    }
-
     return ret;
 }
 
@@ -1687,7 +1644,7 @@ int ctf_fs_component_create_ctf_fs_trace(struct ctf_fs_component *ctf_fs,
                 BT_CPPLOGE_APPEND_CAUSE_SPEC(
                     ctf_fs->logger,
                     "Multiple traces given, but a trace does not have a UUID: path={}",
-                    this_trace->path->str);
+                    this_trace->path);
                 goto error;
             }
 
@@ -1702,8 +1659,8 @@ int ctf_fs_component_create_ctf_fs_trace(struct ctf_fs_component *ctf_fs,
                                              "Multiple traces given, but UUIDs don't match: "
                                              "first-trace-uuid={}, first-trace-path={}, "
                                              "trace-uuid={}, trace-path={}",
-                                             first_trace_uuid_str, first_trace->path->str,
-                                             this_trace_uuid_str, this_trace->path->str);
+                                             first_trace_uuid_str, first_trace->path,
+                                             this_trace_uuid_str, this_trace->path);
                 goto error;
             }
         }
@@ -1750,27 +1707,15 @@ end:
     return ret;
 }
 
-static GString *get_stream_instance_unique_name(struct ctf_fs_ds_file_group *ds_file_group)
+static const std::string&
+get_stream_instance_unique_name(struct ctf_fs_ds_file_group *ds_file_group)
 {
-    GString *name;
-    struct ctf_fs_ds_file_info *ds_file_info;
-
-    name = g_string_new(NULL);
-    if (!name) {
-        goto end;
-    }
-
     /*
-     * If there's more than one stream file in the stream file
-     * group, the first (earliest) stream file's path is used as
-     * the stream's unique name.
+     * The first (earliest) stream file's path is used as the stream's unique
+     * name.
      */
     BT_ASSERT(!ds_file_group->ds_file_infos.empty());
-    ds_file_info = ds_file_group->ds_file_infos[0].get();
-    g_string_assign(name, ds_file_info->path.c_str());
-
-end:
-    return name;
+    return ds_file_group->ds_file_infos[0]->path;
 }
 
 /* Create the IR stream objects for ctf_fs_trace. */
@@ -1778,14 +1723,9 @@ end:
 static int create_streams_for_trace(struct ctf_fs_trace *ctf_fs_trace)
 {
     int ret;
-    GString *name = NULL;
 
     for (const auto& ds_file_group : ctf_fs_trace->ds_file_groups) {
-        name = get_stream_instance_unique_name(ds_file_group.get());
-
-        if (!name) {
-            goto error;
-        }
+        const std::string& name = get_stream_instance_unique_name(ds_file_group.get());
 
         BT_ASSERT(ds_file_group->sc->ir_sc);
         BT_ASSERT(ctf_fs_trace->trace);
@@ -1794,36 +1734,35 @@ static int create_streams_for_trace(struct ctf_fs_trace *ctf_fs_trace)
 
         if (ds_file_group->stream_id == UINT64_C(-1)) {
             /* No stream ID: use 0 */
-            stream = bt_stream_create_with_id(ds_file_group->sc->ir_sc, ctf_fs_trace->trace,
-                                              ctf_fs_trace->next_stream_id);
+            stream =
+                bt_stream_create_with_id(ds_file_group->sc->ir_sc, ctf_fs_trace->trace->libObjPtr(),
+                                         ctf_fs_trace->next_stream_id);
             ctf_fs_trace->next_stream_id++;
         } else {
             /* Specific stream ID */
-            stream = bt_stream_create_with_id(ds_file_group->sc->ir_sc, ctf_fs_trace->trace,
-                                              (uint64_t) ds_file_group->stream_id);
+            stream =
+                bt_stream_create_with_id(ds_file_group->sc->ir_sc, ctf_fs_trace->trace->libObjPtr(),
+                                         (uint64_t) ds_file_group->stream_id);
         }
 
         if (!stream) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs_trace->logger,
                                          "Cannot create stream for DS file group: "
                                          "addr={}, stream-name=\"{}\"",
-                                         fmt::ptr(ds_file_group), name->str);
+                                         fmt::ptr(ds_file_group), name);
             goto error;
         }
 
         ds_file_group->stream = bt2::Stream::Shared::createWithoutRef(stream);
 
-        ret = bt_stream_set_name(ds_file_group->stream->libObjPtr(), name->str);
+        ret = bt_stream_set_name(ds_file_group->stream->libObjPtr(), name.c_str());
         if (ret) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs_trace->logger,
                                          "Cannot set stream's name: "
                                          "addr={}, stream-name=\"{}\"",
-                                         fmt::ptr(ds_file_group->stream->libObjPtr()), name->str);
+                                         fmt::ptr(ds_file_group->stream->libObjPtr()), name);
             goto error;
         }
-
-        g_string_free(name, TRUE);
-        name = NULL;
     }
 
     ret = 0;
@@ -1833,10 +1772,6 @@ error:
     ret = -1;
 
 end:
-
-    if (name) {
-        g_string_free(name, TRUE);
-    }
     return ret;
 }
 
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