src.ctf.fs: fs.cpp: declare variables on first use
[babeltrace.git] / src / plugins / ctf / fs-src / fs.cpp
index ed98c9619178454637e020ffc743b764dd7ade78..6a96394281c78e9f90ac593e917239f2e25694b6 100644 (file)
@@ -7,14 +7,16 @@
  * Babeltrace CTF file system Reader Component
  */
 
+#include <sstream>
+
 #include <glib.h>
-#include <inttypes.h>
 
 #include <babeltrace2/babeltrace.h>
 
 #include "common/assert.h"
 #include "common/common.h"
 #include "common/uuid.h"
+#include "cpp-common/bt2c/glib-up.hpp"
 #include "cpp-common/bt2s/make-unique.hpp"
 
 #include "plugins/common/param-validation/param-validation.h"
@@ -38,9 +40,9 @@ struct tracer_info
 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)
 {
-    bt_message_iterator_class_next_method_status status;
     const auto msg_iter_status =
         ctf_msg_iter_get_next_message(msg_iter_data->msg_iter.get(), out_msg);
+    bt_message_iterator_class_next_method_status status;
 
     switch (msg_iter_status) {
     case CTF_MSG_ITER_STATUS_OK:
@@ -84,10 +86,8 @@ ctf_fs_iterator_next(bt_self_message_iterator *iterator, bt_message_array_const
                      uint64_t capacity, uint64_t *count)
 {
     try {
-        bt_message_iterator_class_next_method_status status;
         struct ctf_fs_msg_iter_data *msg_iter_data =
             (struct ctf_fs_msg_iter_data *) bt_self_message_iterator_get_data(iterator);
-        uint64_t i = 0;
 
         if (G_UNLIKELY(msg_iter_data->next_saved_error)) {
             /*
@@ -96,10 +96,12 @@ ctf_fs_iterator_next(bt_self_message_iterator *iterator, bt_message_array_const
          * it now.
          */
             BT_CURRENT_THREAD_MOVE_ERROR_AND_RESET(msg_iter_data->next_saved_error);
-            status = msg_iter_data->next_saved_status;
-            goto end;
+            return msg_iter_data->next_saved_status;
         }
 
+        bt_message_iterator_class_next_method_status status;
+        uint64_t i = 0;
+
         do {
             status = ctf_fs_iterator_next_one(msg_iter_data, &msgs[i]);
             if (status == BT_MESSAGE_ITERATOR_CLASS_NEXT_METHOD_STATUS_OK) {
@@ -135,7 +137,6 @@ ctf_fs_iterator_next(bt_self_message_iterator *iterator, bt_message_array_const
             status = BT_MESSAGE_ITERATOR_CLASS_NEXT_METHOD_STATUS_OK;
         }
 
-end:
         return status;
         return status;
     } catch (const std::bad_alloc&) {
@@ -194,28 +195,23 @@ ctf_fs_iterator_init(bt_self_message_iterator *self_msg_iter,
                      bt_self_component_port_output *self_port)
 {
     try {
-        struct ctf_fs_port_data *port_data;
-        bt_message_iterator_class_initialize_method_status status;
-        enum ctf_msg_iter_medium_status medium_status;
-
-        port_data = (struct ctf_fs_port_data *) bt_self_component_port_get_data(
+        ctf_fs_port_data *port_data = (struct ctf_fs_port_data *) bt_self_component_port_get_data(
             bt_self_component_port_output_as_self_component_port(self_port));
         BT_ASSERT(port_data);
 
         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,
-                                                           self_msg_iter, msg_iter_data->logger,
-                                                           msg_iter_data->msg_iter_medops_data);
+        ctf_msg_iter_medium_status medium_status = ctf_fs_ds_group_medops_data_create(
+            msg_iter_data->ds_file_group, self_msg_iter, msg_iter_data->logger,
+            msg_iter_data->msg_iter_medops_data);
         BT_ASSERT(medium_status == CTF_MSG_ITER_MEDIUM_STATUS_OK ||
                   medium_status == CTF_MSG_ITER_MEDIUM_STATUS_ERROR ||
                   medium_status == CTF_MSG_ITER_MEDIUM_STATUS_MEMORY_ERROR);
         if (medium_status != CTF_MSG_ITER_MEDIUM_STATUS_OK) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(msg_iter_data->logger,
                                          "Failed to create ctf_fs_ds_group_medops");
-            status = ctf_msg_iter_medium_status_to_msg_iter_initialize_status(medium_status);
-            goto error;
+            return ctf_msg_iter_medium_status_to_msg_iter_initialize_status(medium_status);
         }
 
         msg_iter_data->msg_iter = ctf_msg_iter_create(
@@ -226,8 +222,7 @@ ctf_fs_iterator_init(bt_self_message_iterator *self_msg_iter,
         if (!msg_iter_data->msg_iter) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(msg_iter_data->logger,
                                          "Cannot create a CTF message iterator.");
-            status = BT_MESSAGE_ITERATOR_CLASS_INITIALIZE_METHOD_STATUS_MEMORY_ERROR;
-            goto error;
+            return BT_MESSAGE_ITERATOR_CLASS_INITIALIZE_METHOD_STATUS_MEMORY_ERROR;
         }
 
         /*
@@ -240,14 +235,7 @@ ctf_fs_iterator_init(bt_self_message_iterator *self_msg_iter,
 
         bt_self_message_iterator_set_data(self_msg_iter, msg_iter_data.release());
 
-        status = BT_MESSAGE_ITERATOR_CLASS_INITIALIZE_METHOD_STATUS_OK;
-        goto end;
-
-error:
-        bt_self_message_iterator_set_data(self_msg_iter, NULL);
-
-end:
-        return status;
+        return BT_MESSAGE_ITERATOR_CLASS_INITIALIZE_METHOD_STATUS_OK;
     } catch (const std::bad_alloc&) {
         return BT_MESSAGE_ITERATOR_CLASS_INITIALIZE_METHOD_STATUS_MEMORY_ERROR;
     } catch (const bt2::Error&) {
@@ -255,20 +243,15 @@ end:
     }
 }
 
-ctf_fs_component::UP ctf_fs_component_create(const bt2c::Logger& parentLogger)
-{
-    return bt2s::make_unique<ctf_fs_component>(parentLogger);
-}
-
 void ctf_fs_finalize(bt_self_component_source *component)
 {
     ctf_fs_component::UP {static_cast<ctf_fs_component *>(
         bt_self_component_get_data(bt_self_component_source_as_self_component(component)))};
 }
 
-bt2c::GCharUP ctf_fs_make_port_name(struct ctf_fs_ds_file_group *ds_file_group)
+std::string ctf_fs_make_port_name(ctf_fs_ds_file_group *ds_file_group)
 {
-    GString *name = g_string_new(NULL);
+    std::stringstream name;
 
     /*
      * The unique port name is generated by concatenating unique identifiers
@@ -284,9 +267,9 @@ bt2c::GCharUP ctf_fs_make_port_name(struct ctf_fs_ds_file_group *ds_file_group)
         char uuid_str[BT_UUID_STR_LEN + 1];
 
         bt_uuid_to_str(ds_file_group->ctf_fs_trace->metadata->tc->uuid, uuid_str);
-        g_string_assign(name, uuid_str);
+        name << uuid_str;
     } else {
-        g_string_assign(name, ds_file_group->ctf_fs_trace->path.c_str());
+        name << ds_file_group->ctf_fs_trace->path;
     }
 
     /*
@@ -294,72 +277,57 @@ bt2c::GCharUP ctf_fs_make_port_name(struct ctf_fs_ds_file_group *ds_file_group)
      * otherwise, as there will only be a single stream class.
      */
     if (ds_file_group->sc->id != UINT64_C(-1)) {
-        g_string_append_printf(name, " | %" PRIu64, ds_file_group->sc->id);
+        name << " | " << ds_file_group->sc->id;
     }
 
     /* For the stream, use the id if present, else, use the path. */
     if (ds_file_group->stream_id != UINT64_C(-1)) {
-        g_string_append_printf(name, " | %" PRIu64, ds_file_group->stream_id);
+        name << " | " << ds_file_group->stream_id;
     } else {
         BT_ASSERT(ds_file_group->ds_file_infos.size() == 1);
         const auto& ds_file_info = *ds_file_group->ds_file_infos[0];
-        g_string_append_printf(name, " | %s", ds_file_info.path.c_str());
+        name << " | " << ds_file_info.path;
     }
 
-    return bt2c::GCharUP {g_string_free(name, FALSE)};
+    return name.str();
 }
 
 static int create_one_port_for_trace(struct ctf_fs_component *ctf_fs,
                                      struct ctf_fs_ds_file_group *ds_file_group,
                                      bt_self_component_source *self_comp_src)
 {
-    int ret = 0;
-    ctf_fs_port_data::UP port_data;
-
-    bt2c::GCharUP port_name = ctf_fs_make_port_name(ds_file_group);
-    if (!port_name) {
-        goto error;
-    }
+    const auto port_name = ctf_fs_make_port_name(ds_file_group);
+    auto port_data = bt2s::make_unique<ctf_fs_port_data>();
 
-    BT_CPPLOGI_SPEC(ctf_fs->logger, "Creating one port named `{}`", port_name.get());
+    BT_CPPLOGI_SPEC(ctf_fs->logger, "Creating one port named `{}`", port_name);
 
-    /* Create output port for this file */
-    port_data = bt2s::make_unique<ctf_fs_port_data>();
     port_data->ctf_fs = ctf_fs;
     port_data->ds_file_group = ds_file_group;
-    ret = bt_self_component_source_add_output_port(self_comp_src, port_name.get(), port_data.get(),
-                                                   NULL);
+
+    int ret = bt_self_component_source_add_output_port(self_comp_src, port_name.c_str(),
+                                                       port_data.get(), NULL);
     if (ret) {
-        goto error;
+        return ret;
     }
 
     ctf_fs->port_data.emplace_back(std::move(port_data));
-    goto end;
-
-error:
-    ret = -1;
-
-end:
-    return ret;
+    return 0;
 }
 
 static int create_ports_for_trace(struct ctf_fs_component *ctf_fs,
                                   struct ctf_fs_trace *ctf_fs_trace,
                                   bt_self_component_source *self_comp_src)
 {
-    int ret = 0;
-
     /* Create one output port for each stream file group */
     for (const auto& ds_file_group : ctf_fs_trace->ds_file_groups) {
-        ret = create_one_port_for_trace(ctf_fs, ds_file_group.get(), self_comp_src);
+        int ret = create_one_port_for_trace(ctf_fs, ds_file_group.get(), self_comp_src);
         if (ret) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs->logger, "Cannot create output port.");
-            goto end;
+            return ret;
         }
     }
 
-end:
-    return ret;
+    return 0;
 }
 
 /*
@@ -384,22 +352,22 @@ static void ds_file_group_insert_ds_file_info_sorted(struct ctf_fs_ds_file_group
     ds_file_group->ds_file_infos.insert(it, std::move(ds_file_info));
 }
 
-static bool ds_index_entries_equal(const struct ctf_fs_ds_index_entry *left,
-                                   const struct ctf_fs_ds_index_entry *right)
+static bool ds_index_entries_equal(const ctf_fs_ds_index_entry& left,
+                                   const ctf_fs_ds_index_entry& right)
 {
-    if (left->packetSize != right->packetSize) {
+    if (left.packetSize != right.packetSize) {
         return false;
     }
 
-    if (left->timestamp_begin != right->timestamp_begin) {
+    if (left.timestamp_begin != right.timestamp_begin) {
         return false;
     }
 
-    if (left->timestamp_end != right->timestamp_end) {
+    if (left.timestamp_end != right.timestamp_end) {
         return false;
     }
 
-    if (left->packet_seq_num != right->packet_seq_num) {
+    if (left.packet_seq_num != right.packet_seq_num) {
         return false;
     }
 
@@ -410,18 +378,15 @@ static bool ds_index_entries_equal(const struct ctf_fs_ds_index_entry *left,
  * Insert `entry` into `index`, without duplication.
  *
  * The entry is inserted only if there isn't an identical entry already.
- *
- * In any case, the ownership of `entry` is transferred to this function.  So if
- * the entry is not inserted, it is freed.
  */
 
 static void ds_index_insert_ds_index_entry_sorted(struct ctf_fs_ds_index *index,
-                                                  ctf_fs_ds_index_entry::UP entry)
+                                                  const ctf_fs_ds_index_entry& entry)
 {
     /* Find the spot where to insert this index entry. */
     auto otherEntry = index->entries.begin();
     for (; otherEntry != index->entries.end(); ++otherEntry) {
-        if (entry->timestamp_begin_ns <= (*otherEntry)->timestamp_begin_ns) {
+        if (entry.timestamp_begin_ns <= otherEntry->timestamp_begin_ns) {
             break;
         }
     }
@@ -433,32 +398,20 @@ static void ds_index_insert_ds_index_entry_sorted(struct ctf_fs_ds_index *index,
      * snapshots of the same trace.  We then want the index to contain
      * a reference to only one copy of that packet.
      */
-    if (otherEntry == index->entries.end() ||
-        !ds_index_entries_equal(entry.get(), otherEntry->get())) {
-        index->entries.insert(otherEntry, std::move(entry));
+    if (otherEntry == index->entries.end() || !ds_index_entries_equal(entry, *otherEntry)) {
+        index->entries.emplace(otherEntry, entry);
     }
 }
 
-static void merge_ctf_fs_ds_indexes(struct ctf_fs_ds_index *dest, ctf_fs_ds_index::UP src)
+static void merge_ctf_fs_ds_indexes(struct ctf_fs_ds_index *dest, const ctf_fs_ds_index& src)
 {
-    for (auto& entry : src->entries) {
-        ds_index_insert_ds_index_entry_sorted(dest, std::move(entry));
+    for (const auto& entry : src.entries) {
+        ds_index_insert_ds_index_entry_sorted(dest, entry);
     }
 }
 
 static int add_ds_file_to_ds_file_group(struct ctf_fs_trace *ctf_fs_trace, const char *path)
 {
-    int64_t stream_instance_id = -1;
-    int64_t begin_ns = -1;
-    struct ctf_fs_ds_file_group *ds_file_group = NULL;
-    ctf_fs_ds_file_group::UP new_ds_file_group;
-    int ret;
-    ctf_fs_ds_file_info::UP ds_file_info;
-    ctf_fs_ds_index::UP index;
-    ctf_msg_iter_up msg_iter;
-    struct ctf_stream_class *sc = NULL;
-    struct ctf_msg_iter_packet_properties props;
-
     /*
      * Create a temporary ds_file to read some properties about the data
      * stream file.
@@ -466,32 +419,35 @@ static int add_ds_file_to_ds_file_group(struct ctf_fs_trace *ctf_fs_trace, const
     const auto ds_file =
         ctf_fs_ds_file_create(ctf_fs_trace, bt2::Stream::Shared {}, path, ctf_fs_trace->logger);
     if (!ds_file) {
-        goto error;
+        return -1;
     }
 
     /* Create a temporary iterator to read the ds_file. */
-    msg_iter = ctf_msg_iter_create(
+    ctf_msg_iter_up msg_iter = ctf_msg_iter_create(
         ctf_fs_trace->metadata->tc,
         bt_common_get_page_size(static_cast<int>(ctf_fs_trace->logger.level())) * 8,
         ctf_fs_ds_file_medops, ds_file.get(), nullptr, ctf_fs_trace->logger);
     if (!msg_iter) {
         BT_CPPLOGE_STR_SPEC(ctf_fs_trace->logger, "Cannot create a CTF message iterator.");
-        goto error;
+        return -1;
     }
 
     ctf_msg_iter_set_dry_run(msg_iter.get(), true);
 
-    ret = ctf_msg_iter_get_packet_properties(msg_iter.get(), &props);
+    ctf_msg_iter_packet_properties props;
+    int ret = ctf_msg_iter_get_packet_properties(msg_iter.get(), &props);
     if (ret) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(
             ctf_fs_trace->logger,
             "Cannot get stream file's first packet's header and context fields (`{}`).", path);
-        goto error;
+        return ret;
     }
 
-    sc = ctf_trace_class_borrow_stream_class_by_id(ds_file->metadata->tc, props.stream_class_id);
+    ctf_stream_class *sc =
+        ctf_trace_class_borrow_stream_class_by_id(ds_file->metadata->tc, props.stream_class_id);
     BT_ASSERT(sc);
-    stream_instance_id = props.data_stream_id;
+    int64_t stream_instance_id = props.data_stream_id;
+    int64_t begin_ns = -1;
 
     if (props.snapshots.beginning_clock != UINT64_C(-1)) {
         BT_ASSERT(sc->default_clock_class);
@@ -503,20 +459,20 @@ static int add_ds_file_to_ds_file_group(struct ctf_fs_trace *ctf_fs_trace, const
             BT_CPPLOGE_APPEND_CAUSE_SPEC(
                 ctf_fs_trace->logger,
                 "Cannot convert clock cycles to nanoseconds from origin (`{}`).", path);
-            goto error;
+            return ret;
         }
     }
 
-    ds_file_info = ctf_fs_ds_file_info_create(path, begin_ns);
+    ctf_fs_ds_file_info::UP ds_file_info = ctf_fs_ds_file_info_create(path, begin_ns);
     if (!ds_file_info) {
-        goto error;
+        return -1;
     }
 
-    index = ctf_fs_ds_file_build_index(ds_file.get(), ds_file_info.get(), msg_iter.get());
+    auto index = ctf_fs_ds_file_build_index(ds_file.get(), ds_file_info.get(), msg_iter.get());
     if (!index) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs_trace->logger, "Failed to index CTF stream file \'{}\'",
                                      ds_file->file->path);
-        goto error;
+        return -1;
     }
 
     if (begin_ns == -1) {
@@ -536,22 +492,23 @@ static int add_ds_file_to_ds_file_group(struct ctf_fs_trace *ctf_fs_trace, const
          * there's no timestamp to order the file within its
          * group.
          */
-        new_ds_file_group =
-            ctf_fs_ds_file_group_create(ctf_fs_trace, sc, UINT64_C(-1), std::move(index));
+        auto new_ds_file_group =
+            ctf_fs_ds_file_group_create(ctf_fs_trace, sc, UINT64_C(-1), std::move(*index));
 
         if (!new_ds_file_group) {
-            goto error;
+            return -1;
         }
 
         ds_file_group_insert_ds_file_info_sorted(new_ds_file_group.get(), std::move(ds_file_info));
         ctf_fs_trace->ds_file_groups.emplace_back(std::move(new_ds_file_group));
-        goto end;
+        return 0;
     }
 
     BT_ASSERT(stream_instance_id != -1);
     BT_ASSERT(begin_ns != -1);
 
     /* Find an existing stream file group with this ID */
+    ctf_fs_ds_file_group *ds_file_group = NULL;
     for (const auto& candidate : ctf_fs_trace->ds_file_groups) {
         if (candidate->sc == sc && candidate->stream_id == stream_instance_id) {
             ds_file_group = candidate.get();
@@ -559,47 +516,42 @@ static int add_ds_file_to_ds_file_group(struct ctf_fs_trace *ctf_fs_trace, const
         }
     }
 
+    ctf_fs_ds_file_group::UP new_ds_file_group;
+
     if (!ds_file_group) {
         new_ds_file_group =
-            ctf_fs_ds_file_group_create(ctf_fs_trace, sc, stream_instance_id, std::move(index));
+            ctf_fs_ds_file_group_create(ctf_fs_trace, sc, stream_instance_id, std::move(*index));
         if (!new_ds_file_group) {
-            goto error;
+            return -1;
         }
 
         ds_file_group = new_ds_file_group.get();
         ctf_fs_trace->ds_file_groups.emplace_back(std::move(new_ds_file_group));
     } else {
-        merge_ctf_fs_ds_indexes(ds_file_group->index.get(), std::move(index));
+        merge_ctf_fs_ds_indexes(&ds_file_group->index, *index);
     }
 
     ds_file_group_insert_ds_file_info_sorted(ds_file_group, std::move(ds_file_info));
 
-    goto end;
-
-error:
-    ret = -1;
-
-end:
-    return ret;
+    return 0;
 }
 
 static int create_ds_file_groups(struct ctf_fs_trace *ctf_fs_trace)
 {
-    int ret = 0;
-    const char *basename;
-    GError *error = NULL;
-    GDir *dir = NULL;
-
     /* Check each file in the path directory, except specific ones */
-    dir = g_dir_open(ctf_fs_trace->path.c_str(), 0, &error);
+    GError *error = NULL;
+    const bt2c::GDirUP 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,
                                      error->message, error->code);
-        goto error;
+        if (error) {
+            g_error_free(error);
+        }
+        return -1;
     }
 
-    while ((basename = g_dir_read_name(dir))) {
+    while (const char *basename = g_dir_read_name(dir.get())) {
         if (strcmp(basename, CTF_FS_METADATA_FILENAME) == 0) {
             /* Ignore the metadata stream. */
             BT_CPPLOGI_SPEC(ctf_fs_trace->logger,
@@ -616,106 +568,63 @@ static int create_ds_file_groups(struct ctf_fs_trace *ctf_fs_trace)
         }
 
         /* Create the file. */
-        const auto file = ctf_fs_file_create(ctf_fs_trace->logger);
-        if (!file) {
-            BT_CPPLOGE_APPEND_CAUSE_SPEC(
-                ctf_fs_trace->logger,
-                "Cannot create stream file object for file `{}" G_DIR_SEPARATOR_S "{}`",
-                ctf_fs_trace->path, basename);
-            goto error;
-        }
+        ctf_fs_file file {ctf_fs_trace->logger};
 
         /* Create full path string. */
-        file->path = fmt::format("{}" G_DIR_SEPARATOR_S "{}", ctf_fs_trace->path, 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);
+        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);
             continue;
         }
 
-        ret = ctf_fs_file_open(file.get(), "rb");
+        int ret = ctf_fs_file_open(&file, "rb");
         if (ret) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs_trace->logger, "Cannot open stream file `{}`",
-                                         file->path);
-            goto error;
+                                         file.path);
+            return ret;
         }
 
-        if (file->size == 0) {
+        if (file.size == 0) {
             /* Skip empty stream. */
-            BT_CPPLOGI_SPEC(ctf_fs_trace->logger, "Ignoring empty file `{}`", file->path);
+            BT_CPPLOGI_SPEC(ctf_fs_trace->logger, "Ignoring empty file `{}`", file.path);
             continue;
         }
 
-        ret = add_ds_file_to_ds_file_group(ctf_fs_trace, file->path.c_str());
+        ret = add_ds_file_to_ds_file_group(ctf_fs_trace, file.path.c_str());
         if (ret) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs_trace->logger,
                                          "Cannot add stream file `{}` to stream file group",
-                                         file->path);
-            goto error;
+                                         file.path);
+            return ret;
         }
     }
 
-    goto end;
-
-error:
-    ret = -1;
-
-end:
-    if (dir) {
-        g_dir_close(dir);
-        dir = NULL;
-    }
-
-    if (error) {
-        g_error_free(error);
-    }
-
-    return ret;
+    return 0;
 }
 
-static int set_trace_name(bt_trace *trace, const char *name_suffix, const bt2c::Logger& logger)
+static int set_trace_name(bt_trace *trace, const char *name_suffix)
 {
-    int ret = 0;
-    const bt_value *val;
-    GString *name;
-
-    name = g_string_new(NULL);
-    if (!name) {
-        BT_CPPLOGE_STR_SPEC(logger, "Failed to allocate a GString.");
-        ret = -1;
-        goto end;
-    }
+    std::string name;
 
     /*
      * Check if we have a trace environment string value named `hostname`.
      * If so, use it as the trace name's prefix.
      */
-    val = bt_trace_borrow_environment_entry_value_by_name_const(trace, "hostname");
+    const bt_value *val = bt_trace_borrow_environment_entry_value_by_name_const(trace, "hostname");
     if (val && bt_value_is_string(val)) {
-        g_string_append(name, bt_value_string_get(val));
+        name += bt_value_string_get(val);
 
         if (name_suffix) {
-            g_string_append_c(name, G_DIR_SEPARATOR);
+            name += G_DIR_SEPARATOR;
         }
     }
 
     if (name_suffix) {
-        g_string_append(name, name_suffix);
+        name += name_suffix;
     }
 
-    ret = bt_trace_set_name(trace, name->str);
-    if (ret) {
-        goto end;
-    }
-
-    goto end;
-
-end:
-    if (name) {
-        g_string_free(name, TRUE);
-    }
-
-    return ret;
+    return bt_trace_set_name(trace, name.c_str());
 }
 
 static ctf_fs_trace::UP ctf_fs_trace_create(const char *path, const char *name,
@@ -723,21 +632,19 @@ static ctf_fs_trace::UP ctf_fs_trace_create(const char *path, const char *name,
                                             bt_self_component *selfComp,
                                             const bt2c::Logger& parentLogger)
 {
-    int ret;
-    ctf_fs_trace::UP ctf_fs_trace {new struct ctf_fs_trace(parentLogger)};
-
+    ctf_fs_trace::UP ctf_fs_trace = bt2s::make_unique<struct ctf_fs_trace>(parentLogger);
     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);
+    int ret = ctf_fs_metadata_set_trace_class(selfComp, ctf_fs_trace.get(), clkClsCfg);
     if (ret) {
-        goto error;
+        return nullptr;
     }
 
     if (ctf_fs_trace->metadata->trace_class) {
         bt_trace *trace = bt_trace_create(ctf_fs_trace->metadata->trace_class->libObjPtr());
         if (!trace) {
-            goto error;
+            return nullptr;
         }
 
         ctf_fs_trace->trace = bt2::Trace::Shared::createWithoutRef(trace);
@@ -747,49 +654,27 @@ static ctf_fs_trace::UP ctf_fs_trace_create(const char *path, const char *name,
         ret = ctf_trace_class_configure_ir_trace(ctf_fs_trace->metadata->tc,
                                                  ctf_fs_trace->trace->libObjPtr());
         if (ret) {
-            goto error;
+            return nullptr;
         }
 
-        ret = set_trace_name(ctf_fs_trace->trace->libObjPtr(), name, ctf_fs_trace->logger);
+        ret = set_trace_name(ctf_fs_trace->trace->libObjPtr(), name);
         if (ret) {
-            goto error;
+            return nullptr;
         }
     }
 
     ret = create_ds_file_groups(ctf_fs_trace.get());
     if (ret) {
-        goto error;
+        return nullptr;
     }
 
-    goto end;
-
-error:
-    ctf_fs_trace.reset();
-
-end:
     return ctf_fs_trace;
 }
 
 static int path_is_ctf_trace(const char *path)
 {
-    GString *metadata_path = g_string_new(NULL);
-    int ret = 0;
-
-    if (!metadata_path) {
-        ret = -1;
-        goto end;
-    }
-
-    g_string_printf(metadata_path, "%s" G_DIR_SEPARATOR_S "%s", path, CTF_FS_METADATA_FILENAME);
-
-    if (g_file_test(metadata_path->str, G_FILE_TEST_IS_REGULAR)) {
-        ret = 1;
-        goto end;
-    }
-
-end:
-    g_string_free(metadata_path, TRUE);
-    return ret;
+    return g_file_test(fmt::format("{}" G_DIR_SEPARATOR_S CTF_FS_METADATA_FILENAME, path).c_str(),
+                       G_FILE_TEST_IS_REGULAR);
 }
 
 /* Helper for ctf_fs_component_create_ctf_fs_trace, to handle a single path. */
@@ -800,52 +685,41 @@ static int ctf_fs_component_create_ctf_fs_trace_one_path(struct ctf_fs_component
                                                          std::vector<ctf_fs_trace::UP>& traces,
                                                          bt_self_component *selfComp)
 {
-    ctf_fs_trace::UP ctf_fs_trace;
-    int ret;
-
     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;
+        return -1;
     }
 
-    ret = path_is_ctf_trace(norm_path->str);
+    int ret = path_is_ctf_trace(norm_path->str);
     if (ret < 0) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(
             ctf_fs->logger, "Failed to check if path is a CTF trace: path={}", norm_path->str);
-        goto error;
+        return ret;
     } else if (ret == 0) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(
             ctf_fs->logger, "Path is not a CTF trace (does not contain a metadata file): `{}`.",
             norm_path->str);
-        goto error;
+        return -1;
     }
 
     // FIXME: Remove or ifdef for __MINGW32__
     if (strcmp(norm_path->str, "/") == 0) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs->logger, "Opening a trace in `/` is not supported.");
-        ret = -1;
-        goto end;
+        return -1;
     }
 
-    ctf_fs_trace = ctf_fs_trace_create(norm_path->str, trace_name, ctf_fs->clkClsCfg, selfComp,
-                                       ctf_fs->logger);
+    ctf_fs_trace::UP ctf_fs_trace = ctf_fs_trace_create(
+        norm_path->str, trace_name, ctf_fs->clkClsCfg, selfComp, ctf_fs->logger);
     if (!ctf_fs_trace) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs->logger, "Cannot create trace for `{}`.",
                                      norm_path->str);
-        goto error;
+        return -1;
     }
 
     traces.emplace_back(std::move(ctf_fs_trace));
 
-    ret = 0;
-    goto end;
-
-error:
-    ret = -1;
-
-end:
-    return ret;
+    return 0;
 }
 
 /*
@@ -860,9 +734,8 @@ end:
 static unsigned int metadata_count_stream_and_event_classes(struct ctf_fs_trace *trace)
 {
     unsigned int num = trace->metadata->tc->stream_classes->len;
-    guint i;
 
-    for (i = 0; i < trace->metadata->tc->stream_classes->len; i++) {
+    for (guint i = 0; i < trace->metadata->tc->stream_classes->len; i++) {
         struct ctf_stream_class *sc =
             (struct ctf_stream_class *) trace->metadata->tc->stream_classes->pdata[i];
         num += sc->event_classes->len;
@@ -884,7 +757,7 @@ static void merge_ctf_fs_ds_file_groups(struct ctf_fs_ds_file_group *dest,
     }
 
     /* Merge both indexes. */
-    merge_ctf_fs_ds_indexes(dest->index.get(), std::move(src->index));
+    merge_ctf_fs_ds_indexes(&dest->index, src->index);
 }
 
 /* Merge src_trace's data stream file groups into dest_trace's. */
@@ -894,7 +767,6 @@ static int merge_matching_ctf_fs_ds_file_groups(struct ctf_fs_trace *dest_trace,
 {
     std::vector<ctf_fs_ds_file_group::UP>& dest = dest_trace->ds_file_groups;
     std::vector<ctf_fs_ds_file_group::UP>& src = src_trace->ds_file_groups;
-    int ret = 0;
 
     /*
      * Save the initial length of dest: we only want to check against the
@@ -939,24 +811,15 @@ static int merge_matching_ctf_fs_ds_file_groups(struct ctf_fs_trace *dest_trace,
          * trace chunk.
          */
         if (!dest_group) {
-            struct ctf_stream_class *sc;
-
-            sc = ctf_trace_class_borrow_stream_class_by_id(dest_trace->metadata->tc,
-                                                           src_group->sc->id);
+            ctf_stream_class *sc = ctf_trace_class_borrow_stream_class_by_id(
+                dest_trace->metadata->tc, src_group->sc->id);
             BT_ASSERT(sc);
 
-            auto index = ctf_fs_ds_index_create();
-            if (!index) {
-                ret = -1;
-                goto end;
-            }
-
             auto new_dest_group =
-                ctf_fs_ds_file_group_create(dest_trace, sc, src_group->stream_id, std::move(index));
+                ctf_fs_ds_file_group_create(dest_trace, sc, src_group->stream_id, {});
 
             if (!new_dest_group) {
-                ret = -1;
-                goto end;
+                return -1;
             }
 
             dest_group = new_dest_group.get();
@@ -967,8 +830,7 @@ static int merge_matching_ctf_fs_ds_file_groups(struct ctf_fs_trace *dest_trace,
         merge_ctf_fs_ds_file_groups(dest_group, std::move(src_group));
     }
 
-end:
-    return ret;
+    return 0;
 }
 
 /*
@@ -982,19 +844,14 @@ end:
 
 static int merge_ctf_fs_traces(std::vector<ctf_fs_trace::UP> traces, ctf_fs_trace::UP& out_trace)
 {
-    unsigned int winner_count;
-    struct ctf_fs_trace *winner;
-    guint i, winner_i;
-    int ret = 0;
-
     BT_ASSERT(traces.size() >= 2);
 
-    winner_count = metadata_count_stream_and_event_classes(traces[0].get());
-    winner = traces[0].get();
-    winner_i = 0;
+    unsigned int winner_count = metadata_count_stream_and_event_classes(traces[0].get());
+    ctf_fs_trace *winner = traces[0].get();
+    guint winner_i = 0;
 
     /* Find the trace with the largest metadata. */
-    for (i = 1; i < traces.size(); i++) {
+    for (guint i = 1; i < traces.size(); i++) {
         ctf_fs_trace *candidate = traces[i].get();
         unsigned int candidate_count;
 
@@ -1018,9 +875,9 @@ static int merge_ctf_fs_traces(std::vector<ctf_fs_trace::UP> traces, ctf_fs_trac
         }
 
         /* Merge trace's data stream file groups into winner's. */
-        ret = merge_matching_ctf_fs_ds_file_groups(winner, std::move(trace));
+        int ret = merge_matching_ctf_fs_ds_file_groups(winner, std::move(trace));
         if (ret) {
-            goto end;
+            return ret;
         }
     }
 
@@ -1029,8 +886,7 @@ static int merge_ctf_fs_traces(std::vector<ctf_fs_trace::UP> traces, ctf_fs_trac
      */
     out_trace = std::move(traces[winner_i]);
 
-end:
-    return ret;
+    return 0;
 }
 
 enum target_event
@@ -1041,37 +897,31 @@ enum target_event
 
 static int decode_clock_snapshot_after_event(struct ctf_fs_trace *ctf_fs_trace,
                                              struct ctf_clock_class *default_cc,
-                                             struct ctf_fs_ds_index_entry *index_entry,
+                                             const ctf_fs_ds_index_entry& index_entry,
                                              enum target_event target_event, uint64_t *cs,
                                              int64_t *ts_ns)
 {
-    enum ctf_msg_iter_status iter_status = CTF_MSG_ITER_STATUS_OK;
-    ctf_msg_iter_up msg_iter;
-    int ret = 0;
-
     BT_ASSERT(ctf_fs_trace);
-    BT_ASSERT(index_entry);
-    BT_ASSERT(index_entry->path);
+    BT_ASSERT(index_entry.path);
 
     const auto ds_file = ctf_fs_ds_file_create(ctf_fs_trace, bt2::Stream::Shared {},
-                                               index_entry->path, ctf_fs_trace->logger);
+                                               index_entry.path, ctf_fs_trace->logger);
     if (!ds_file) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs_trace->logger, "Failed to create a ctf_fs_ds_file");
-        ret = -1;
-        goto end;
+        return -1;
     }
 
     BT_ASSERT(ctf_fs_trace->metadata);
     BT_ASSERT(ctf_fs_trace->metadata->tc);
 
-    msg_iter = ctf_msg_iter_create(
+    ctf_msg_iter_up msg_iter = ctf_msg_iter_create(
         ctf_fs_trace->metadata->tc,
         bt_common_get_page_size(static_cast<int>(ctf_fs_trace->logger.level())) * 8,
+
         ctf_fs_ds_file_medops, ds_file.get(), NULL, ctf_fs_trace->logger);
     if (!msg_iter) {
         /* ctf_msg_iter_create() logs errors. */
-        ret = -1;
-        goto end;
+        return -1;
     }
 
     /*
@@ -1081,11 +931,11 @@ static int decode_clock_snapshot_after_event(struct ctf_fs_trace *ctf_fs_trace,
     ctf_msg_iter_set_dry_run(msg_iter.get(), true);
 
     /* Seek to the beginning of the target packet. */
-    iter_status = ctf_msg_iter_seek(msg_iter.get(), index_entry->offset.bytes());
+    enum ctf_msg_iter_status iter_status =
+        ctf_msg_iter_seek(msg_iter.get(), index_entry.offset.bytes());
     if (iter_status) {
         /* ctf_msg_iter_seek() logs errors. */
-        ret = -1;
-        goto end;
+        return -1;
     }
 
     switch (target_event) {
@@ -1105,26 +955,24 @@ static int decode_clock_snapshot_after_event(struct ctf_fs_trace *ctf_fs_trace,
         bt_common_abort();
     }
     if (iter_status) {
-        ret = -1;
-        goto end;
+        return -1;
     }
 
     /* Convert clock snapshot to timestamp. */
-    ret = bt_util_clock_cycles_to_ns_from_origin(
+    int ret = bt_util_clock_cycles_to_ns_from_origin(
         *cs, default_cc->frequency, default_cc->offset_seconds, default_cc->offset_cycles, ts_ns);
     if (ret) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs_trace->logger,
                                      "Failed to convert clock snapshot to timestamp");
-        goto end;
+        return ret;
     }
 
-end:
-    return ret;
+    return 0;
 }
 
 static int decode_packet_first_event_timestamp(struct ctf_fs_trace *ctf_fs_trace,
                                                struct ctf_clock_class *default_cc,
-                                               struct ctf_fs_ds_index_entry *index_entry,
+                                               const ctf_fs_ds_index_entry& index_entry,
                                                uint64_t *cs, int64_t *ts_ns)
 {
     return decode_clock_snapshot_after_event(ctf_fs_trace, default_cc, index_entry, FIRST_EVENT, cs,
@@ -1133,7 +981,7 @@ static int decode_packet_first_event_timestamp(struct ctf_fs_trace *ctf_fs_trace
 
 static int decode_packet_last_event_timestamp(struct ctf_fs_trace *ctf_fs_trace,
                                               struct ctf_clock_class *default_cc,
-                                              struct ctf_fs_ds_index_entry *index_entry,
+                                              const ctf_fs_ds_index_entry& index_entry,
                                               uint64_t *cs, int64_t *ts_ns)
 {
     return decode_clock_snapshot_after_event(ctf_fs_trace, default_cc, index_entry, LAST_EVENT, cs,
@@ -1160,60 +1008,52 @@ static int decode_packet_last_event_timestamp(struct ctf_fs_trace *ctf_fs_trace,
  */
 static int fix_index_lttng_event_after_packet_bug(struct ctf_fs_trace *trace)
 {
-    int ret = 0;
-
     for (const auto& ds_file_group : trace->ds_file_groups) {
-        struct ctf_clock_class *default_cc;
-
         BT_ASSERT(ds_file_group);
-        const auto index = ds_file_group->index.get();
+        auto& index = ds_file_group->index;
 
-        BT_ASSERT(index);
-        BT_ASSERT(!index->entries.empty());
+        BT_ASSERT(!index.entries.empty());
 
         /*
          * Iterate over all entries but the last one. The last one is
          * fixed differently after.
          */
-        for (size_t entry_i = 0; entry_i < index->entries.size() - 1; ++entry_i) {
-            ctf_fs_ds_index_entry *curr_entry = index->entries[entry_i].get();
-            ctf_fs_ds_index_entry *next_entry = index->entries[entry_i + 1].get();
+        for (size_t entry_i = 0; entry_i < index.entries.size() - 1; ++entry_i) {
+            auto& curr_entry = index.entries[entry_i];
+            const auto& next_entry = index.entries[entry_i + 1];
 
             /*
              * 1. Set the current index entry `end` timestamp to
              * the next index entry `begin` timestamp.
              */
-            curr_entry->timestamp_end = next_entry->timestamp_begin;
-            curr_entry->timestamp_end_ns = next_entry->timestamp_begin_ns;
+            curr_entry.timestamp_end = next_entry.timestamp_begin;
+            curr_entry.timestamp_end_ns = next_entry.timestamp_begin_ns;
         }
 
         /*
          * 2. Fix the last entry by decoding the last event of the last
          * packet.
          */
-        const auto last_entry = index->entries.back().get();
-        BT_ASSERT(last_entry);
+        auto& last_entry = index.entries.back();
 
         BT_ASSERT(ds_file_group->sc->default_clock_class);
-        default_cc = ds_file_group->sc->default_clock_class;
+        ctf_clock_class *default_cc = ds_file_group->sc->default_clock_class;
 
         /*
          * Decode packet to read the timestamp of the last event of the
          * entry.
          */
-        ret = decode_packet_last_event_timestamp(trace, default_cc, last_entry,
-                                                 &last_entry->timestamp_end,
-                                                 &last_entry->timestamp_end_ns);
+        int ret = decode_packet_last_event_timestamp(
+            trace, default_cc, last_entry, &last_entry.timestamp_end, &last_entry.timestamp_end_ns);
         if (ret) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(
                 trace->logger,
                 "Failed to decode stream's last packet to get its last event's clock snapshot.");
-            goto end;
+            return ret;
         }
     }
 
-end:
-    return ret;
+    return 0;
 }
 
 /*
@@ -1232,48 +1072,44 @@ end:
  */
 static int fix_index_barectf_event_before_packet_bug(struct ctf_fs_trace *trace)
 {
-    int ret = 0;
-
     for (const auto& ds_file_group : trace->ds_file_groups) {
-        struct ctf_clock_class *default_cc;
-        const auto index = ds_file_group->index.get();
+        auto& index = ds_file_group->index;
 
-        BT_ASSERT(index);
-        BT_ASSERT(!index->entries.empty());
+        BT_ASSERT(!index.entries.empty());
 
         BT_ASSERT(ds_file_group->sc->default_clock_class);
-        default_cc = ds_file_group->sc->default_clock_class;
+        ctf_clock_class *default_cc = ds_file_group->sc->default_clock_class;
 
         /*
          * 1. Iterate over the index, starting from the second entry
          * (index = 1).
          */
-        for (size_t entry_i = 1; entry_i < index->entries.size(); ++entry_i) {
-            ctf_fs_ds_index_entry *prev_entry = index->entries[entry_i - 1].get();
-            ctf_fs_ds_index_entry *curr_entry = index->entries[entry_i].get();
+        for (size_t entry_i = 1; entry_i < index.entries.size(); ++entry_i) {
+            auto& prev_entry = index.entries[entry_i - 1];
+            auto& curr_entry = index.entries[entry_i];
             /*
              * 2. Set the current entry `begin` timestamp to the
              * timestamp of the first event of the current packet.
              */
-            ret = decode_packet_first_event_timestamp(trace, default_cc, curr_entry,
-                                                      &curr_entry->timestamp_begin,
-                                                      &curr_entry->timestamp_begin_ns);
+            int ret = decode_packet_first_event_timestamp(trace, default_cc, curr_entry,
+                                                          &curr_entry.timestamp_begin,
+                                                          &curr_entry.timestamp_begin_ns);
             if (ret) {
                 BT_CPPLOGE_APPEND_CAUSE_SPEC(trace->logger,
                                              "Failed to decode first event's clock snapshot");
-                goto end;
+                return ret;
             }
 
             /*
              * 3. Set the previous entry `end` timestamp to the
              * timestamp of the first event of the current packet.
              */
-            prev_entry->timestamp_end = curr_entry->timestamp_begin;
-            prev_entry->timestamp_end_ns = curr_entry->timestamp_begin_ns;
+            prev_entry.timestamp_end = curr_entry.timestamp_begin;
+            prev_entry.timestamp_end_ns = curr_entry.timestamp_begin_ns;
         }
     }
-end:
-    return ret;
+
+    return 0;
 }
 
 /*
@@ -1295,57 +1131,52 @@ end:
  */
 static int fix_index_lttng_crash_quirk(struct ctf_fs_trace *trace)
 {
-    int ret = 0;
-
     for (const auto& ds_file_group : trace->ds_file_groups) {
         struct ctf_clock_class *default_cc;
 
         BT_ASSERT(ds_file_group);
-        const auto index = ds_file_group->index.get();
+        auto& index = ds_file_group->index;
 
         BT_ASSERT(ds_file_group->sc->default_clock_class);
         default_cc = ds_file_group->sc->default_clock_class;
 
-        BT_ASSERT(index);
-        BT_ASSERT(!index->entries.empty());
+        BT_ASSERT(!index.entries.empty());
 
-        const auto last_entry = index->entries.back().get();
-        BT_ASSERT(last_entry);
+        auto& last_entry = index.entries.back();
 
         /* 1. Fix the last entry first. */
-        if (last_entry->timestamp_end == 0 && last_entry->timestamp_begin != 0) {
+        if (last_entry.timestamp_end == 0 && last_entry.timestamp_begin != 0) {
             /*
              * Decode packet to read the timestamp of the
              * last event of the stream file.
              */
-            ret = decode_packet_last_event_timestamp(trace, default_cc, last_entry,
-                                                     &last_entry->timestamp_end,
-                                                     &last_entry->timestamp_end_ns);
+            int ret = decode_packet_last_event_timestamp(trace, default_cc, last_entry,
+                                                         &last_entry.timestamp_end,
+                                                         &last_entry.timestamp_end_ns);
             if (ret) {
                 BT_CPPLOGE_APPEND_CAUSE_SPEC(trace->logger,
                                              "Failed to decode last event's clock snapshot");
-                goto end;
+                return ret;
             }
         }
 
         /* Iterate over all entries but the last one. */
-        for (size_t entry_idx = 0; entry_idx < index->entries.size() - 1; ++entry_idx) {
-            ctf_fs_ds_index_entry *curr_entry = index->entries[entry_idx].get();
-            ctf_fs_ds_index_entry *next_entry = index->entries[entry_idx + 1].get();
+        for (size_t entry_idx = 0; entry_idx < index.entries.size() - 1; ++entry_idx) {
+            auto& curr_entry = index.entries[entry_idx];
+            const auto& next_entry = index.entries[entry_idx + 1];
 
-            if (curr_entry->timestamp_end == 0 && curr_entry->timestamp_begin != 0) {
+            if (curr_entry.timestamp_end == 0 && curr_entry.timestamp_begin != 0) {
                 /*
                  * 2. Set the current index entry `end` timestamp to
                  * the next index entry `begin` timestamp.
                  */
-                curr_entry->timestamp_end = next_entry->timestamp_begin;
-                curr_entry->timestamp_end_ns = next_entry->timestamp_begin_ns;
+                curr_entry.timestamp_end = next_entry.timestamp_begin;
+                curr_entry.timestamp_end_ns = next_entry.timestamp_begin_ns;
             }
         }
     }
 
-end:
-    return ret;
+    return 0;
 }
 
 /*
@@ -1355,9 +1186,6 @@ end:
  */
 static int extract_tracer_info(struct ctf_fs_trace *trace, struct tracer_info *current_tracer_info)
 {
-    int ret = 0;
-    struct ctf_trace_class_env_entry *entry;
-
     /* Clear the current_tracer_info struct */
     memset(current_tracer_info, 0, sizeof(*current_tracer_info));
 
@@ -1366,9 +1194,10 @@ static int extract_tracer_info(struct ctf_fs_trace *trace, struct tracer_info *c
      * major version are needed. If one of these is missing, consider it an
      * extraction failure.
      */
-    entry = ctf_trace_class_borrow_env_entry_by_name(trace->metadata->tc, "tracer_name");
+    ctf_trace_class_env_entry *entry =
+        ctf_trace_class_borrow_env_entry_by_name(trace->metadata->tc, "tracer_name");
     if (!entry || entry->type != CTF_TRACE_CLASS_ENV_ENTRY_TYPE_STR) {
-        goto missing_bare_minimum;
+        return -1;
     }
 
     /* Set tracer name. */
@@ -1376,7 +1205,7 @@ static int extract_tracer_info(struct ctf_fs_trace *trace, struct tracer_info *c
 
     entry = ctf_trace_class_borrow_env_entry_by_name(trace->metadata->tc, "tracer_major");
     if (!entry || entry->type != CTF_TRACE_CLASS_ENV_ENTRY_TYPE_INT) {
-        goto missing_bare_minimum;
+        return -1;
     }
 
     /* Set major version number. */
@@ -1384,7 +1213,7 @@ static int extract_tracer_info(struct ctf_fs_trace *trace, struct tracer_info *c
 
     entry = ctf_trace_class_borrow_env_entry_by_name(trace->metadata->tc, "tracer_minor");
     if (!entry || entry->type != CTF_TRACE_CLASS_ENV_ENTRY_TYPE_INT) {
-        goto end;
+        return 0;
     }
 
     /* Set minor version number. */
@@ -1401,18 +1230,13 @@ static int extract_tracer_info(struct ctf_fs_trace *trace, struct tracer_info *c
     }
 
     if (!entry || entry->type != CTF_TRACE_CLASS_ENV_ENTRY_TYPE_INT) {
-        goto end;
+        return 0;
     }
 
     /* Set patch version number. */
     current_tracer_info->patch = entry->value.i;
 
-    goto end;
-
-missing_bare_minimum:
-    ret = -1;
-end:
-    return ret;
+    return 0;
 }
 
 static bool is_tracer_affected_by_lttng_event_after_packet_bug(struct tracer_info *curr_tracer_info)
@@ -1495,10 +1319,9 @@ static bool is_tracer_affected_by_lttng_crash_quirk(struct tracer_info *curr_tra
  */
 static int fix_packet_index_tracer_bugs(ctf_fs_trace *trace)
 {
-    int ret = 0;
     struct tracer_info current_tracer_info;
 
-    ret = extract_tracer_info(trace, &current_tracer_info);
+    int ret = extract_tracer_info(trace, &current_tracer_info);
     if (ret) {
         /*
          * A trace may not have all the necessary environment
@@ -1507,11 +1330,10 @@ static int fix_packet_index_tracer_bugs(ctf_fs_trace *trace)
          * are needed. Failing to extract these entries is not
          * an error.
          */
-        ret = 0;
         BT_CPPLOGI_STR_SPEC(
             trace->logger,
             "Cannot extract tracer information necessary to compare with buggy versions.");
-        goto end;
+        return 0;
     }
 
     /* Check if the trace may be affected by old tracer bugs. */
@@ -1523,7 +1345,7 @@ static int fix_packet_index_tracer_bugs(ctf_fs_trace *trace)
         if (ret) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(trace->logger,
                                          "Failed to fix LTTng event-after-packet bug.");
-            goto end;
+            return ret;
         }
         trace->metadata->tc->quirks.lttng_event_after_packet = true;
     }
@@ -1536,7 +1358,7 @@ static int fix_packet_index_tracer_bugs(ctf_fs_trace *trace)
         if (ret) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(trace->logger,
                                          "Failed to fix barectf event-before-packet bug.");
-            goto end;
+            return ret;
         }
         trace->metadata->tc->quirks.barectf_event_before_packet = true;
     }
@@ -1546,13 +1368,12 @@ static int fix_packet_index_tracer_bugs(ctf_fs_trace *trace)
         if (ret) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(trace->logger,
                                          "Failed to fix lttng-crash timestamp quirks.");
-            goto end;
+            return ret;
         }
         trace->metadata->tc->quirks.lttng_crash = true;
     }
 
-end:
-    return ret;
+    return 0;
 }
 
 static bool compare_ds_file_groups_by_first_path(const ctf_fs_ds_file_group::UP& ds_file_group_a,
@@ -1567,64 +1388,37 @@ static bool compare_ds_file_groups_by_first_path(const ctf_fs_ds_file_group::UP&
     return first_ds_file_info_a.path < first_ds_file_info_b.path;
 }
 
-static gint compare_strings(gconstpointer p_a, gconstpointer p_b)
-{
-    const char *a = *((const char **) p_a);
-    const char *b = *((const char **) p_b);
-
-    return strcmp(a, b);
-}
-
 int ctf_fs_component_create_ctf_fs_trace(struct ctf_fs_component *ctf_fs,
                                          const bt_value *paths_value,
                                          const bt_value *trace_name_value,
                                          bt_self_component *selfComp)
 {
-    int ret = 0;
-    uint64_t i;
-    GPtrArray *paths = NULL;
-    std::vector<ctf_fs_trace::UP> traces;
-    const char *trace_name;
+    std::vector<std::string> paths;
 
     BT_ASSERT(bt_value_get_type(paths_value) == BT_VALUE_TYPE_ARRAY);
     BT_ASSERT(!bt_value_array_is_empty(paths_value));
 
-    paths = g_ptr_array_new_with_free_func(g_free);
-    if (!paths) {
-        BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs->logger, "Failed to allocate a GPtrArray.");
-        goto error;
-    }
-
-    trace_name = trace_name_value ? bt_value_string_get(trace_name_value) : NULL;
+    const char *trace_name = trace_name_value ? bt_value_string_get(trace_name_value) : NULL;
 
     /*
      * Create a sorted array of the paths, to make the execution of this
      * component deterministic.
      */
-    for (i = 0; i < bt_value_array_get_length(paths_value); i++) {
+    for (std::uint64_t i = 0; i < bt_value_array_get_length(paths_value); i++) {
         const bt_value *path_value = bt_value_array_borrow_element_by_index_const(paths_value, i);
         const char *input = bt_value_string_get(path_value);
-        gchar *input_copy;
-
-        input_copy = g_strdup(input);
-        if (!input_copy) {
-            BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs->logger, "Failed to copy a string.");
-            goto error;
-        }
-
-        g_ptr_array_add(paths, input_copy);
+        paths.emplace_back(input);
     }
 
-    g_ptr_array_sort(paths, compare_strings);
+    std::sort(paths.begin(), paths.end());
 
     /* Create a separate ctf_fs_trace object for each path. */
-    for (i = 0; i < paths->len; i++) {
-        const char *path = (const char *) g_ptr_array_index(paths, i);
-
-        ret = ctf_fs_component_create_ctf_fs_trace_one_path(ctf_fs, path, trace_name, traces,
-                                                            selfComp);
+    std::vector<ctf_fs_trace::UP> traces;
+    for (const auto& path : paths) {
+        int ret = ctf_fs_component_create_ctf_fs_trace_one_path(ctf_fs, path.c_str(), trace_name,
+                                                                traces, selfComp);
         if (ret) {
-            goto end;
+            return ret;
         }
     }
 
@@ -1636,7 +1430,7 @@ int ctf_fs_component_create_ctf_fs_trace(struct ctf_fs_component *ctf_fs,
          * We have more than one trace, they must all share the same
          * UUID, verify that.
          */
-        for (i = 0; i < traces.size(); i++) {
+        for (size_t i = 0; i < traces.size(); i++) {
             ctf_fs_trace *this_trace = traces[i].get();
             const uint8_t *this_trace_uuid = this_trace->metadata->tc->uuid;
 
@@ -1645,7 +1439,7 @@ int ctf_fs_component_create_ctf_fs_trace(struct ctf_fs_component *ctf_fs,
                     ctf_fs->logger,
                     "Multiple traces given, but a trace does not have a UUID: path={}",
                     this_trace->path);
-                goto error;
+                return -1;
             }
 
             if (bt_uuid_compare(first_trace_uuid, this_trace_uuid) != 0) {
@@ -1661,24 +1455,25 @@ int ctf_fs_component_create_ctf_fs_trace(struct ctf_fs_component *ctf_fs,
                                              "trace-uuid={}, trace-path={}",
                                              first_trace_uuid_str, first_trace->path,
                                              this_trace_uuid_str, this_trace->path);
-                goto error;
+                return -1;
             }
         }
 
-        ret = merge_ctf_fs_traces(std::move(traces), ctf_fs->trace);
+        int ret = merge_ctf_fs_traces(std::move(traces), ctf_fs->trace);
         if (ret) {
             BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs->logger,
                                          "Failed to merge traces with the same UUID.");
-            goto error;
+            return ret;
         }
     } else {
         /* Just one trace, it may or may not have a UUID, both are fine. */
         ctf_fs->trace = std::move(traces[0]);
     }
 
-    ret = fix_packet_index_tracer_bugs(ctf_fs->trace.get());
+    int ret = fix_packet_index_tracer_bugs(ctf_fs->trace.get());
     if (ret) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs->logger, "Failed to fix packet index tracer bugs.");
+        return ret;
     }
 
     /*
@@ -1695,16 +1490,8 @@ int ctf_fs_component_create_ctf_fs_trace(struct ctf_fs_component *ctf_fs,
      */
     std::sort(ctf_fs->trace->ds_file_groups.begin(), ctf_fs->trace->ds_file_groups.end(),
               compare_ds_file_groups_by_first_path);
-    goto end;
-error:
-    ret = -1;
 
-end:
-    if (paths) {
-        g_ptr_array_free(paths, TRUE);
-    }
-
-    return ret;
+    return 0;
 }
 
 static const std::string&
@@ -1722,8 +1509,6 @@ get_stream_instance_unique_name(struct ctf_fs_ds_file_group *ds_file_group)
 
 static int create_streams_for_trace(struct ctf_fs_trace *ctf_fs_trace)
 {
-    int ret;
-
     for (const auto& ds_file_group : ctf_fs_trace->ds_file_groups) {
         const std::string& name = get_stream_instance_unique_name(ds_file_group.get());
 
@@ -1750,29 +1535,22 @@ static int create_streams_for_trace(struct ctf_fs_trace *ctf_fs_trace)
                                          "Cannot create stream for DS file group: "
                                          "addr={}, stream-name=\"{}\"",
                                          fmt::ptr(ds_file_group), name);
-            goto error;
+            return -1;
         }
 
         ds_file_group->stream = bt2::Stream::Shared::createWithoutRef(stream);
 
-        ret = bt_stream_set_name(ds_file_group->stream->libObjPtr(), name.c_str());
+        int 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);
-            goto error;
+            return ret;
         }
     }
 
-    ret = 0;
-    goto end;
-
-error:
-    ret = -1;
-
-end:
-    return ret;
+    return 0;
 }
 
 static const bt_param_validation_value_descr inputs_elem_descr =
@@ -1795,23 +1573,20 @@ static bt_param_validation_map_value_entry_descr fs_params_entries_descr[] = {
 bool read_src_fs_parameters(const bt_value *params, const bt_value **inputs,
                             const bt_value **trace_name, struct ctf_fs_component *ctf_fs)
 {
-    bool ret;
-    const bt_value *value;
-    enum bt_param_validation_status validate_value_status;
     gchar *error = NULL;
-
-    validate_value_status = bt_param_validation_validate(params, fs_params_entries_descr, &error);
+    bt_param_validation_status validate_value_status =
+        bt_param_validation_validate(params, fs_params_entries_descr, &error);
     if (validate_value_status != BT_PARAM_VALIDATION_STATUS_OK) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs->logger, "{}", error);
-        ret = false;
-        goto end;
+        g_free(error);
+        return false;
     }
 
     /* inputs parameter */
     *inputs = bt_value_map_borrow_entry_value_const(params, "inputs");
 
     /* clock-class-offset-s parameter */
-    value = bt_value_map_borrow_entry_value_const(params, "clock-class-offset-s");
+    const bt_value *value = bt_value_map_borrow_entry_value_const(params, "clock-class-offset-s");
     if (value) {
         ctf_fs->clkClsCfg.offsetSec = bt_value_integer_signed_get(value);
     }
@@ -1831,11 +1606,7 @@ bool read_src_fs_parameters(const bt_value *params, const bt_value **inputs,
     /* trace-name parameter */
     *trace_name = bt_value_map_borrow_entry_value_const(params, "trace-name");
 
-    ret = true;
-
-end:
-    g_free(error);
-    return ret;
+    return true;
 }
 
 static ctf_fs_component::UP ctf_fs_create(const bt_value *params,
@@ -1845,11 +1616,8 @@ static ctf_fs_component::UP ctf_fs_create(const bt_value *params,
     const bt_value *trace_name_value;
     bt_self_component *self_comp = bt_self_component_source_as_self_component(self_comp_src);
 
-    ctf_fs_component::UP ctf_fs = ctf_fs_component_create(
+    ctf_fs_component::UP ctf_fs = bt2s::make_unique<ctf_fs_component>(
         bt2c::Logger {bt2::SelfSourceComponent {self_comp_src}, "PLUGIN/SRC.CTF.FS/COMP"});
-    if (!ctf_fs) {
-        return nullptr;
-    }
 
     if (!read_src_fs_parameters(params, &inputs_value, &trace_name_value, ctf_fs.get())) {
         return nullptr;
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