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[babeltrace.git] / src / lib / trace-ir / stream-class.c
index edeccbecc730391c62857f6c371839da5c9bccbb..43551b7171a75198dfd928b2262f64657a54e783 100644 (file)
@@ -1,31 +1,15 @@
 /*
+ * SPDX-License-Identifier: MIT
+ *
  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
  * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
  */
 
 #define BT_LOG_TAG "LIB/STREAM-CLASS"
 #include "lib/logging.h"
 
-#include "lib/assert-pre.h"
-#include <babeltrace2/trace-ir/trace-const.h>
+#include "lib/assert-cond.h"
+#include <babeltrace2/trace-ir/trace.h>
 #include "compat/compiler.h"
 #include "common/align.h"
 #include "compat/endian.h"
 #include "stream-class.h"
 #include "trace.h"
 #include "utils.h"
+#include "lib/value.h"
 #include "lib/func-status.h"
 
-#define BT_ASSERT_PRE_STREAM_CLASS_HOT(_sc) \
-       BT_ASSERT_PRE_HOT((_sc), "Stream class", ": %!+S", (_sc))
+#define BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(_sc)                                \
+       BT_ASSERT_PRE_DEV_HOT("stream-class", (_sc), "Stream class",    \
+               ": %!+S", (_sc))
 
 static
 void destroy_stream_class(struct bt_object *obj)
@@ -56,6 +42,7 @@ void destroy_stream_class(struct bt_object *obj)
 
        BT_LIB_LOGD("Destroying stream class: %!+S", stream_class);
        BT_LOGD_STR("Putting default clock class.");
+       BT_OBJECT_PUT_REF_AND_RESET(stream_class->user_attributes);
        BT_OBJECT_PUT_REF_AND_RESET(stream_class->default_clock_class);
 
        if (stream_class->event_classes) {
@@ -85,7 +72,6 @@ void free_field_wrapper(struct bt_field_wrapper *field_wrapper,
        bt_field_wrapper_destroy((void *) field_wrapper);
 }
 
-BT_ASSERT_PRE_FUNC
 static
 bool stream_class_id_is_unique(const struct bt_trace_class *tc, uint64_t id)
 {
@@ -114,7 +100,8 @@ struct bt_stream_class *create_stream_class_with_id(
        int ret;
 
        BT_ASSERT(tc);
-       BT_ASSERT_PRE(stream_class_id_is_unique(tc, id),
+       BT_ASSERT_PRE("stream-class-id-is-unique",
+               stream_class_id_is_unique(tc, id),
                "Duplicate stream class ID: %![tc-]+T, id=%" PRIu64, tc, id);
        BT_LIB_LOGD("Creating stream class object: %![tc-]+T, id=%" PRIu64,
                tc, id);
@@ -127,12 +114,17 @@ struct bt_stream_class *create_stream_class_with_id(
 
        bt_object_init_shared_with_parent(&stream_class->base,
                destroy_stream_class);
+       stream_class->user_attributes = bt_value_map_create();
+       if (!stream_class->user_attributes) {
+               BT_LIB_LOGE_APPEND_CAUSE(
+                       "Failed to create a map value object.");
+               goto error;
+       }
 
        stream_class->name.str = g_string_new(NULL);
        if (!stream_class->name.str) {
                BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate a GString.");
-               ret = -1;
-               goto end;
+               goto error;
        }
 
        stream_class->id = id;
@@ -169,79 +161,95 @@ end:
        return stream_class;
 }
 
+BT_EXPORT
 struct bt_stream_class *bt_stream_class_create(struct bt_trace_class *tc)
 {
-       BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
-       BT_ASSERT_PRE(tc->assigns_automatic_stream_class_id,
+       BT_ASSERT_PRE_NO_ERROR();
+       BT_ASSERT_PRE_TC_NON_NULL(tc);
+       BT_ASSERT_PRE("trace-class-automatically-assigns-stream-class-ids",
+               tc->assigns_automatic_stream_class_id,
                "Trace class does not automatically assigns stream class IDs: "
                "%![sc-]+T", tc);
        return create_stream_class_with_id(tc,
                (uint64_t) tc->stream_classes->len);
 }
 
+BT_EXPORT
 struct bt_stream_class *bt_stream_class_create_with_id(
                struct bt_trace_class *tc, uint64_t id)
 {
-       BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
-       BT_ASSERT_PRE(!tc->assigns_automatic_stream_class_id,
+       BT_ASSERT_PRE_NO_ERROR();
+       BT_ASSERT_PRE_TC_NON_NULL(tc);
+       BT_ASSERT_PRE(
+               "trace-class-does-not-automatically-assigns-stream-class-ids",
+               !tc->assigns_automatic_stream_class_id,
                "Trace class automatically assigns stream class IDs: "
                "%![sc-]+T", tc);
        return create_stream_class_with_id(tc, id);
 }
 
+BT_EXPORT
 struct bt_trace_class *bt_stream_class_borrow_trace_class(
                struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return bt_stream_class_borrow_trace_class_inline(stream_class);
 }
 
+BT_EXPORT
 const struct bt_trace_class *bt_stream_class_borrow_trace_class_const(
                const struct bt_stream_class *stream_class)
 {
        return bt_stream_class_borrow_trace_class((void *) stream_class);
 }
 
+BT_EXPORT
 const char *bt_stream_class_get_name(const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return stream_class->name.value;
 }
 
+BT_EXPORT
 enum bt_stream_class_set_name_status bt_stream_class_set_name(
                struct bt_stream_class *stream_class,
                const char *name)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
-       BT_ASSERT_PRE_NON_NULL(name, "Name");
-       BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
+       BT_ASSERT_PRE_NO_ERROR();
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE_NAME_NON_NULL(name);
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
        g_string_assign(stream_class->name.str, name);
        stream_class->name.value = stream_class->name.str->str;
        BT_LIB_LOGD("Set stream class's name: %!+S", stream_class);
        return BT_FUNC_STATUS_OK;
 }
 
+BT_EXPORT
 uint64_t bt_stream_class_get_id(const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return stream_class->id;
 }
 
+BT_EXPORT
 uint64_t bt_stream_class_get_event_class_count(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return (uint64_t) stream_class->event_classes->len;
 }
 
+BT_EXPORT
 struct bt_event_class *bt_stream_class_borrow_event_class_by_index(
                struct bt_stream_class *stream_class, uint64_t index)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
-       BT_ASSERT_PRE_VALID_INDEX(index, stream_class->event_classes->len);
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE_DEV_VALID_INDEX(index, stream_class->event_classes->len);
        return g_ptr_array_index(stream_class->event_classes, index);
 }
 
+BT_EXPORT
 const struct bt_event_class *
 bt_stream_class_borrow_event_class_by_index_const(
                const struct bt_stream_class *stream_class, uint64_t index)
@@ -250,13 +258,14 @@ bt_stream_class_borrow_event_class_by_index_const(
                (void *) stream_class, index);
 }
 
+BT_EXPORT
 struct bt_event_class *bt_stream_class_borrow_event_class_by_id(
                struct bt_stream_class *stream_class, uint64_t id)
 {
        struct bt_event_class *event_class = NULL;
        uint64_t i;
 
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
 
        for (i = 0; i < stream_class->event_classes->len; i++) {
                struct bt_event_class *event_class_candidate =
@@ -272,6 +281,7 @@ end:
        return event_class;
 }
 
+BT_EXPORT
 const struct bt_event_class *
 bt_stream_class_borrow_event_class_by_id_const(
                const struct bt_stream_class *stream_class, uint64_t id)
@@ -280,22 +290,25 @@ bt_stream_class_borrow_event_class_by_id_const(
                (void *) stream_class, id);
 }
 
+BT_EXPORT
 const struct bt_field_class *
 bt_stream_class_borrow_packet_context_field_class_const(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return stream_class->packet_context_fc;
 }
 
+BT_EXPORT
 struct bt_field_class *
 bt_stream_class_borrow_packet_context_field_class(
                struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return stream_class->packet_context_fc;
 }
 
+BT_EXPORT
 enum bt_stream_class_set_field_class_status
 bt_stream_class_set_packet_context_field_class(
                struct bt_stream_class *stream_class,
@@ -309,17 +322,17 @@ bt_stream_class_set_packet_context_field_class(
                .event_payload = NULL,
        };
 
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
-       BT_ASSERT_PRE(stream_class->supports_packets,
+       BT_ASSERT_PRE_NO_ERROR();
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE("supports-packets",
+               stream_class->supports_packets,
                "Stream class does not support packets: %![sc-]+S",
                stream_class);
-       BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
-       BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
-       BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
-               BT_FIELD_CLASS_TYPE_STRUCTURE,
-               "Packet context field class is not a structure field class: %!+F",
-               field_class);
-       ret = bt_resolve_field_paths(field_class, &resolve_ctx);
+       BT_ASSERT_PRE_FC_NON_NULL(field_class);
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
+       BT_ASSERT_PRE_FC_IS_STRUCT("field-class", field_class,
+               "Packet context field class");
+       ret = bt_resolve_field_paths(field_class, &resolve_ctx, __func__);
        if (ret) {
                /*
                 * This is the only reason for which
@@ -333,7 +346,7 @@ bt_stream_class_set_packet_context_field_class(
        bt_field_class_make_part_of_trace_class(field_class);
        bt_object_put_ref(stream_class->packet_context_fc);
        stream_class->packet_context_fc = field_class;
-       bt_object_get_no_null_check(stream_class->packet_context_fc);
+       bt_object_get_ref_no_null_check(stream_class->packet_context_fc);
        bt_field_class_freeze(field_class);
        BT_LIB_LOGD("Set stream class's packet context field class: %!+S",
                stream_class);
@@ -342,22 +355,25 @@ end:
        return ret;
 }
 
+BT_EXPORT
 const struct bt_field_class *
 bt_stream_class_borrow_event_common_context_field_class_const(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return stream_class->event_common_context_fc;
 }
 
+BT_EXPORT
 struct bt_field_class *
 bt_stream_class_borrow_event_common_context_field_class(
                struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return stream_class->event_common_context_fc;
 }
 
+BT_EXPORT
 enum bt_stream_class_set_field_class_status
 bt_stream_class_set_event_common_context_field_class(
                struct bt_stream_class *stream_class,
@@ -371,15 +387,14 @@ bt_stream_class_set_event_common_context_field_class(
                .event_payload = NULL,
        };
 
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
-       BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
-       BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
-       BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
-               BT_FIELD_CLASS_TYPE_STRUCTURE,
-               "Event common context field class is not a structure field class: %!+F",
-               field_class);
+       BT_ASSERT_PRE_NO_ERROR();
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE_FC_NON_NULL(field_class);
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
+       BT_ASSERT_PRE_FC_IS_STRUCT("field-class", field_class,
+               "Event common context field class");
        resolve_ctx.packet_context = stream_class->packet_context_fc;
-       ret = bt_resolve_field_paths(field_class, &resolve_ctx);
+       ret = bt_resolve_field_paths(field_class, &resolve_ctx, __func__);
        if (ret) {
                /*
                 * This is the only reason for which
@@ -393,7 +408,7 @@ bt_stream_class_set_event_common_context_field_class(
        bt_field_class_make_part_of_trace_class(field_class);
        bt_object_put_ref(stream_class->event_common_context_fc);
        stream_class->event_common_context_fc = field_class;
-       bt_object_get_no_null_check(stream_class->event_common_context_fc);
+       bt_object_get_ref_no_null_check(stream_class->event_common_context_fc);
        bt_field_class_freeze(field_class);
        BT_LIB_LOGD("Set stream class's event common context field class: %!+S",
                stream_class);
@@ -402,84 +417,96 @@ end:
        return ret;
 }
 
-BT_HIDDEN
 void _bt_stream_class_freeze(const struct bt_stream_class *stream_class)
 {
        /* The field classes and default clock class are already frozen */
        BT_ASSERT(stream_class);
+       BT_LIB_LOGD("Freezing stream class's user attributes: %!+v",
+               stream_class->user_attributes);
+       bt_value_freeze(stream_class->user_attributes);
        BT_LIB_LOGD("Freezing stream class: %!+S", stream_class);
        ((struct bt_stream_class *) stream_class)->frozen = true;
 }
 
+BT_EXPORT
 enum bt_stream_class_set_default_clock_class_status
 bt_stream_class_set_default_clock_class(
                struct bt_stream_class *stream_class,
                struct bt_clock_class *clock_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
-       BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
-       BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
+       BT_ASSERT_PRE_NO_ERROR();
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE_CLK_CLS_NON_NULL(clock_class);
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
        bt_object_put_ref(stream_class->default_clock_class);
        stream_class->default_clock_class = clock_class;
-       bt_object_get_no_null_check(stream_class->default_clock_class);
+       bt_object_get_ref_no_null_check(stream_class->default_clock_class);
        bt_clock_class_freeze(clock_class);
        BT_LIB_LOGD("Set stream class's default clock class: %!+S",
                stream_class);
        return BT_FUNC_STATUS_OK;
 }
 
+BT_EXPORT
 struct bt_clock_class *bt_stream_class_borrow_default_clock_class(
                struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return stream_class->default_clock_class;
 }
 
+BT_EXPORT
 const struct bt_clock_class *bt_stream_class_borrow_default_clock_class_const(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return stream_class->default_clock_class;
 }
 
+BT_EXPORT
 bt_bool bt_stream_class_assigns_automatic_event_class_id(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return (bt_bool) stream_class->assigns_automatic_event_class_id;
 }
 
+BT_EXPORT
 void bt_stream_class_set_assigns_automatic_event_class_id(
                struct bt_stream_class *stream_class,
                bt_bool value)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
-       BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
        stream_class->assigns_automatic_event_class_id = (bool) value;
        BT_LIB_LOGD("Set stream class's automatic event class ID "
                "assignment property: %!+S", stream_class);
 }
 
+BT_EXPORT
 bt_bool bt_stream_class_assigns_automatic_stream_id(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return (bt_bool) stream_class->assigns_automatic_stream_id;
 }
 
+BT_EXPORT
 void bt_stream_class_set_supports_discarded_events(
                struct bt_stream_class *stream_class,
                bt_bool supports_discarded_events,
                bt_bool with_default_clock_snapshots)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
-       BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
-       BT_ASSERT_PRE(supports_discarded_events ||
-               !with_default_clock_snapshots,
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
+       BT_ASSERT_PRE("supports-discarded-events-for-default-clock-snapshots",
+               supports_discarded_events ||
+                       !with_default_clock_snapshots,
                "Discarded events cannot have default clock snapshots when "
                "not supported: %!+S", stream_class);
-       BT_ASSERT_PRE(!with_default_clock_snapshots ||
-               stream_class->default_clock_class,
+       BT_ASSERT_PRE("has-default-clock-class-for-default-clock-snapshots",
+               !with_default_clock_snapshots ||
+                       stream_class->default_clock_class,
                "Stream class has no default clock class: %!+S", stream_class);
        stream_class->supports_discarded_events =
                (bool) supports_discarded_events;
@@ -489,37 +516,43 @@ void bt_stream_class_set_supports_discarded_events(
                "%!+S", stream_class);
 }
 
+BT_EXPORT
 bt_bool bt_stream_class_supports_discarded_events(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return (bt_bool) stream_class->supports_discarded_events;
 }
 
+BT_EXPORT
 bt_bool bt_stream_class_discarded_events_have_default_clock_snapshots(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return (bt_bool) stream_class->discarded_events_have_default_clock_snapshots;
 }
 
+BT_EXPORT
 void bt_stream_class_set_supports_discarded_packets(
                struct bt_stream_class *stream_class,
                bt_bool supports_discarded_packets,
                bt_bool with_default_clock_snapshots)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
-       BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
-       BT_ASSERT_PRE(!supports_discarded_packets ||
-               stream_class->supports_packets,
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
+       BT_ASSERT_PRE("supports-packets-for-discarded-packets-support",
+               !supports_discarded_packets ||
+                       stream_class->supports_packets,
                "Stream class does not support packets: %!+S",
                stream_class);
-       BT_ASSERT_PRE(supports_discarded_packets ||
-               !with_default_clock_snapshots,
+       BT_ASSERT_PRE("supports-discarded-packets-for-default-clock-snapshots",
+               supports_discarded_packets ||
+                       !with_default_clock_snapshots,
                "Discarded packets cannot have default clock snapshots when "
                "not supported: %!+S", stream_class);
-       BT_ASSERT_PRE(!with_default_clock_snapshots ||
-               stream_class->default_clock_class,
+       BT_ASSERT_PRE("has-default-clock-class-for-default-clock-snapshots",
+               !with_default_clock_snapshots ||
+                       stream_class->default_clock_class,
                "Stream class has no default clock class: %!+S", stream_class);
        stream_class->supports_discarded_packets =
                (bool) supports_discarded_packets;
@@ -529,20 +562,23 @@ void bt_stream_class_set_supports_discarded_packets(
                "%!+S", stream_class);
 }
 
+BT_EXPORT
 bt_bool bt_stream_class_supports_discarded_packets(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return (bt_bool) stream_class->supports_discarded_packets;
 }
 
+BT_EXPORT
 bt_bool bt_stream_class_discarded_packets_have_default_clock_snapshots(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return (bt_bool) stream_class->discarded_packets_have_default_clock_snapshots;
 }
 
+BT_EXPORT
 void bt_stream_class_set_supports_packets(
                struct bt_stream_class *stream_class,
                bt_bool supports_packets,
@@ -552,20 +588,23 @@ void bt_stream_class_set_supports_packets(
        bt_bool with_default_clock_snapshot =
                with_beginning_default_clock_snapshot ||
                with_end_default_clock_snapshot;
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
-       BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
-       BT_ASSERT_PRE(supports_packets ||
-               !with_default_clock_snapshot,
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
+       BT_ASSERT_PRE("supports-packets-for-default-clock-snapshot",
+               supports_packets ||
+                       !with_default_clock_snapshot,
                "Packets cannot have default clock snapshots when "
                "not supported: %!+S", stream_class);
-       BT_ASSERT_PRE(!with_default_clock_snapshot ||
-               stream_class->default_clock_class,
+       BT_ASSERT_PRE("has-default-clock-class-for-default-clock-snapshot",
+               !with_default_clock_snapshot ||
+                       stream_class->default_clock_class,
                "Stream class has no default clock class: %!+S", stream_class);
-       BT_ASSERT_PRE(supports_packets || !stream_class->packet_context_fc,
+       BT_ASSERT_PRE("supports-packets-for-packet-context-field-class",
+               supports_packets || !stream_class->packet_context_fc,
                "Stream class already has a packet context field class: %!+S",
                stream_class);
-       BT_ASSERT_PRE(supports_packets ||
-               !stream_class->supports_discarded_packets,
+       BT_ASSERT_PRE("supports-packets-for-discarded-packets-support",
+               supports_packets || !stream_class->supports_discarded_packets,
                "Stream class already supports discarded packets: %!+S",
                stream_class);
        stream_class->supports_packets = (bool) supports_packets;
@@ -577,43 +616,79 @@ void bt_stream_class_set_supports_packets(
                stream_class);
 }
 
+BT_EXPORT
 bt_bool bt_stream_class_supports_packets(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
        return (bt_bool) stream_class->supports_packets;
 }
 
+BT_EXPORT
 bt_bool bt_stream_class_packets_have_beginning_default_clock_snapshot(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return (bt_bool) stream_class->packets_have_beginning_default_clock_snapshot;
 }
 
+BT_EXPORT
 bt_bool bt_stream_class_packets_have_end_default_clock_snapshot(
                const struct bt_stream_class *stream_class)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
        return (bt_bool) stream_class->packets_have_end_default_clock_snapshot;
 }
 
+BT_EXPORT
 void bt_stream_class_set_assigns_automatic_stream_id(
                struct bt_stream_class *stream_class,
                bt_bool value)
 {
-       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
-       BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
        stream_class->assigns_automatic_stream_id = (bool) value;
        BT_LIB_LOGD("Set stream class's automatic stream ID "
                "assignment property: %!+S", stream_class);
 }
 
+BT_EXPORT
+const struct bt_value *bt_stream_class_borrow_user_attributes_const(
+               const struct bt_stream_class *stream_class)
+{
+       BT_ASSERT_PRE_DEV_SC_NON_NULL(stream_class);
+       return stream_class->user_attributes;
+}
+
+BT_EXPORT
+struct bt_value *bt_stream_class_borrow_user_attributes(
+               struct bt_stream_class *stream_class)
+{
+       return (void *) bt_stream_class_borrow_user_attributes_const(
+               (void *) stream_class);
+}
+
+BT_EXPORT
+void bt_stream_class_set_user_attributes(
+               struct bt_stream_class *stream_class,
+               const struct bt_value *user_attributes)
+{
+       BT_ASSERT_PRE_SC_NON_NULL(stream_class);
+       BT_ASSERT_PRE_USER_ATTRS_NON_NULL(user_attributes);
+       BT_ASSERT_PRE_USER_ATTRS_IS_MAP(user_attributes);
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
+       bt_object_put_ref_no_null_check(stream_class->user_attributes);
+       stream_class->user_attributes = (void *) user_attributes;
+       bt_object_get_ref_no_null_check(stream_class->user_attributes);
+}
+
+BT_EXPORT
 void bt_stream_class_get_ref(const struct bt_stream_class *stream_class)
 {
        bt_object_get_ref(stream_class);
 }
 
+BT_EXPORT
 void bt_stream_class_put_ref(const struct bt_stream_class *stream_class)
 {
        bt_object_put_ref(stream_class);
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