cli: Support arrays in parameters
[babeltrace.git] / cli / babeltrace-cfg-cli-args.c
index 9d2b684edaa4e11a13d9a74aa613650f84de2ac0..927a85d931482e8d285ac692f45d004ce97a7339 100644 (file)
@@ -34,7 +34,6 @@
 #include <inttypes.h>
 #include <babeltrace/babeltrace.h>
 #include <babeltrace/common-internal.h>
-#include <babeltrace/values.h>
 #include <popt.h>
 #include <glib.h>
 #include <sys/types.h>
@@ -71,9 +70,6 @@ enum ini_parsing_fsm_state {
        /* Expect a value */
        INI_EXPECT_VALUE,
 
-       /* Expect a negative number value */
-       INI_EXPECT_VALUE_NUMBER_NEG,
-
        /* Expect a comma character (',') */
        INI_EXPECT_COMMA,
 };
@@ -84,7 +80,7 @@ struct ini_parsing_state {
        GScanner *scanner;
 
        /* Output map value object being filled (owned by this) */
-       struct bt_value *params;
+       bt_value *params;
 
        /* Next expected FSM state */
        enum ini_parsing_fsm_state expecting;
@@ -121,8 +117,8 @@ struct text_legacy_opts {
        GString *output;
        GString *dbg_info_dir;
        GString *dbg_info_target_prefix;
-       struct bt_value *names;
-       struct bt_value *fields;
+       const bt_value *names;
+       const bt_value *fields;
 
        /* Flags */
        bool no_delta;
@@ -189,12 +185,202 @@ void ini_append_error_expecting(struct ini_parsing_state *state,
        g_string_append_printf(state->ini_error, "^\n\n");
 }
 
+/* Parse the next token as a number and return its negation. */
+static
+bt_value *ini_parse_neg_number(struct ini_parsing_state *state)
+{
+       bt_value *value = NULL;
+       GTokenType token_type = g_scanner_get_next_token(state->scanner);
+
+       switch (token_type) {
+       case G_TOKEN_INT:
+       {
+               /* Negative integer */
+               uint64_t int_val = state->scanner->value.v_int64;
+
+               if (int_val > (((uint64_t) INT64_MAX) + 1)) {
+                       g_string_append_printf(state->ini_error,
+                               "Integer value -%" PRIu64 " is outside the range of a 64-bit signed integer\n",
+                               int_val);
+               } else {
+                       value = bt_value_integer_create_init(-((int64_t) int_val));
+               }
+
+               break;
+       }
+       case G_TOKEN_FLOAT:
+               /* Negative floating point number */
+               value = bt_value_real_create_init(-state->scanner->value.v_float);
+               break;
+       default:
+               ini_append_error_expecting(state, state->scanner, "value");
+               break;
+       }
+
+       return value;
+}
+
+static bt_value *ini_parse_value(struct ini_parsing_state *state);
+
+/*
+ * Parse the current and following tokens as an array.  Arrays are formatted as
+ * an opening `[`, a list of comma-separated values and a closing `]`.  For
+ * convenience we support an optional trailing comma, after the last value.
+ *
+ * The current token of the parser must be the opening square bracket of the
+ * array.
+ */
+static
+bt_value *ini_parse_array(struct ini_parsing_state *state)
+{
+       /* The [ character must have already been ingested. */
+       BT_ASSERT(g_scanner_cur_token(state->scanner) == G_TOKEN_CHAR);
+       BT_ASSERT(g_scanner_cur_value(state->scanner).v_char == '[');
+
+       bt_value *array_value;
+       GTokenType token_type;
+
+       array_value = bt_value_array_create ();
+       token_type = g_scanner_get_next_token(state->scanner);
+
+       /* While the current token is not a ]... */
+       while (!(token_type == G_TOKEN_CHAR && g_scanner_cur_value(state->scanner).v_char == ']')) {
+               /* Parse the item... */
+               bt_value *item_value;
+               bt_value_status status;
+
+               item_value = ini_parse_value(state);
+               if (!item_value) {
+                       goto error;
+               }
+
+               /* ... and add it to the result array. */
+               status = bt_value_array_append_element(array_value, item_value);
+               BT_VALUE_PUT_REF_AND_RESET(item_value);
+
+               if (status != BT_VALUE_STATUS_OK) {
+                       goto error;
+               }
+
+               /*
+                * Ingest the token following the value, it should be either a
+                * comma or closing square brace.
+                */
+               token_type = g_scanner_get_next_token(state->scanner);
+
+               if (token_type == G_TOKEN_CHAR && g_scanner_cur_value(state->scanner).v_char == ',') {
+                       /*
+                        * Ingest the token following the comma.  If it happens
+                        * to be a closing square bracket, we'll exit the loop
+                        * and we are done (we allow trailing commas).
+                        * Otherwise, we are ready for the next ini_parse_value call.
+                        */
+                       token_type = g_scanner_get_next_token(state->scanner);
+               } else if (token_type != G_TOKEN_CHAR || g_scanner_cur_value(state->scanner).v_char != ']') {
+                       ini_append_error_expecting(state, state->scanner, ", or ]");
+                       goto error;
+               }
+       }
+
+       goto end;
+
+error:
+       BT_VALUE_PUT_REF_AND_RESET(array_value);
+
+end:
+       return array_value;
+}
+
+/*
+ * Parse the current token (and the following ones if needed) as a value, return
+ * it as a bt_value.
+ */
+static
+bt_value *ini_parse_value(struct ini_parsing_state *state)
+{
+       bt_value *value = NULL;
+       GTokenType token_type = state->scanner->token;
+
+       switch (token_type) {
+       case G_TOKEN_CHAR:
+               if (state->scanner->value.v_char == '-') {
+                       /* Negative number */
+                       value = ini_parse_neg_number(state);
+               } else if (state->scanner->value.v_char == '[') {
+                       /* Array */
+                       value = ini_parse_array(state);
+               } else {
+                       ini_append_error_expecting(state, state->scanner, "value");
+               }
+               break;
+       case G_TOKEN_INT:
+       {
+               /* Positive integer */
+               uint64_t int_val = state->scanner->value.v_int64;
+
+               if (int_val > INT64_MAX) {
+                       g_string_append_printf(state->ini_error,
+                               "Integer value %" PRIu64 " is outside the range of a 64-bit signed integer\n",
+                               int_val);
+               } else {
+                       value = bt_value_integer_create_init((int64_t)int_val);
+               }
+               break;
+       }
+       case G_TOKEN_FLOAT:
+               /* Positive floating point number */
+               value = bt_value_real_create_init(state->scanner->value.v_float);
+               break;
+       case G_TOKEN_STRING:
+               /* Quoted string */
+               value = bt_value_string_create_init(state->scanner->value.v_string);
+               break;
+       case G_TOKEN_IDENTIFIER:
+       {
+               /*
+                * Using symbols would be appropriate here,
+                * but said symbols are allowed as map key,
+                * so it's easier to consider everything an
+                * identifier.
+                *
+                * If one of the known symbols is not
+                * recognized here, then fall back to creating
+                * a string value.
+                */
+               const char *id = state->scanner->value.v_identifier;
+
+               if (!strcmp(id, "null") || !strcmp(id, "NULL") ||
+                               !strcmp(id, "nul")) {
+                       value = bt_value_null;
+               } else if (!strcmp(id, "true") || !strcmp(id, "TRUE") ||
+                               !strcmp(id, "yes") ||
+                               !strcmp(id, "YES")) {
+                       value = bt_value_bool_create_init(true);
+               } else if (!strcmp(id, "false") ||
+                               !strcmp(id, "FALSE") ||
+                               !strcmp(id, "no") ||
+                               !strcmp(id, "NO")) {
+                       value = bt_value_bool_create_init(false);
+               } else {
+                       value = bt_value_string_create_init(id);
+               }
+               break;
+       }
+       default:
+               /* Unset value variable will trigger the error */
+               ini_append_error_expecting(state, state->scanner, "value");
+               break;
+       }
+
+       return value;
+}
+
 static
 int ini_handle_state(struct ini_parsing_state *state)
 {
        int ret = 0;
        GTokenType token_type;
-       struct bt_value *value = NULL;
+       bt_value *value = NULL;
 
        token_type = g_scanner_get_next_token(state->scanner);
        if (token_type == G_TOKEN_EOF) {
@@ -205,7 +391,6 @@ int ini_handle_state(struct ini_parsing_state *state)
                                        state->scanner, "'='");
                                break;
                        case INI_EXPECT_VALUE:
-                       case INI_EXPECT_VALUE_NUMBER_NEG:
                                ini_append_error_expecting(state,
                                        state->scanner, "value");
                                break;
@@ -241,7 +426,8 @@ int ini_handle_state(struct ini_parsing_state *state)
                        goto error;
                }
 
-               if (bt_value_map_has_key(state->params, state->last_map_key)) {
+               if (bt_value_map_has_entry(state->params,
+                                          state->last_map_key)) {
                        g_string_append_printf(state->ini_error,
                                "Duplicate parameter key: `%s`\n",
                                state->last_map_key);
@@ -267,122 +453,8 @@ int ini_handle_state(struct ini_parsing_state *state)
                goto success;
        case INI_EXPECT_VALUE:
        {
-               switch (token_type) {
-               case G_TOKEN_CHAR:
-                       if (state->scanner->value.v_char == '-') {
-                               /* Negative number */
-                               state->expecting =
-                                       INI_EXPECT_VALUE_NUMBER_NEG;
-                               goto success;
-                       } else {
-                               ini_append_error_expecting(state,
-                                       state->scanner, "value");
-                               goto error;
-                       }
-                       break;
-               case G_TOKEN_INT:
-               {
-                       /* Positive integer */
-                       uint64_t int_val = state->scanner->value.v_int64;
-
-                       if (int_val > (1ULL << 63) - 1) {
-                               g_string_append_printf(state->ini_error,
-                                       "Integer value %" PRIu64 " is outside the range of a 64-bit signed integer\n",
-                                       int_val);
-                               goto error;
-                       }
-
-                       value = bt_value_integer_create_init(
-                               (int64_t) int_val);
-                       break;
-               }
-               case G_TOKEN_FLOAT:
-                       /* Positive floating point number */
-                       value = bt_value_float_create_init(
-                               state->scanner->value.v_float);
-                       break;
-               case G_TOKEN_STRING:
-                       /* Quoted string */
-                       value = bt_value_string_create_init(
-                               state->scanner->value.v_string);
-                       break;
-               case G_TOKEN_IDENTIFIER:
-               {
-                       /*
-                        * Using symbols would be appropriate here,
-                        * but said symbols are allowed as map key,
-                        * so it's easier to consider everything an
-                        * identifier.
-                        *
-                        * If one of the known symbols is not
-                        * recognized here, then fall back to creating
-                        * a string value.
-                        */
-                       const char *id = state->scanner->value.v_identifier;
-
-                       if (!strcmp(id, "null") || !strcmp(id, "NULL") ||
-                                       !strcmp(id, "nul")) {
-                               value = bt_value_null;
-                       } else if (!strcmp(id, "true") || !strcmp(id, "TRUE") ||
-                                       !strcmp(id, "yes") ||
-                                       !strcmp(id, "YES")) {
-                               value = bt_value_bool_create_init(true);
-                       } else if (!strcmp(id, "false") ||
-                                       !strcmp(id, "FALSE") ||
-                                       !strcmp(id, "no") ||
-                                       !strcmp(id, "NO")) {
-                               value = bt_value_bool_create_init(false);
-                       } else {
-                               value = bt_value_string_create_init(id);
-                       }
-                       break;
-               }
-               default:
-                       /* Unset value variable will trigger the error */
-                       break;
-               }
-
-               if (!value) {
-                       ini_append_error_expecting(state,
-                               state->scanner, "value");
-                       goto error;
-               }
-
-               state->expecting = INI_EXPECT_COMMA;
-               goto success;
-       }
-       case INI_EXPECT_VALUE_NUMBER_NEG:
-       {
-               switch (token_type) {
-               case G_TOKEN_INT:
-               {
-                       /* Negative integer */
-                       uint64_t int_val = state->scanner->value.v_int64;
-
-                       if (int_val > (1ULL << 63) - 1) {
-                               g_string_append_printf(state->ini_error,
-                                       "Integer value -%" PRIu64 " is outside the range of a 64-bit signed integer\n",
-                                       int_val);
-                               goto error;
-                       }
-
-                       value = bt_value_integer_create_init(
-                               -((int64_t) int_val));
-                       break;
-               }
-               case G_TOKEN_FLOAT:
-                       /* Negative floating point number */
-                       value = bt_value_float_create_init(
-                               -state->scanner->value.v_float);
-                       break;
-               default:
-                       /* Unset value variable will trigger the error */
-                       break;
-               }
-
+               value = ini_parse_value(state);
                if (!value) {
-                       ini_append_error_expecting(state,
-                               state->scanner, "value");
                        goto error;
                }
 
@@ -414,7 +486,7 @@ error:
 
 success:
        if (value) {
-               if (bt_value_map_insert(state->params,
+               if (bt_value_map_insert_entry(state->params,
                                state->last_map_key, value)) {
                        /* Only override return value on error */
                        ret = -1;
@@ -422,7 +494,7 @@ success:
        }
 
 end:
-       BT_PUT(value);
+       BT_VALUE_PUT_REF_AND_RESET(value);
        return ret;
 }
 
@@ -432,7 +504,8 @@ end:
  * Return value is owned by the caller.
  */
 static
-struct bt_value *bt_value_from_ini(const char *arg, GString *ini_error)
+bt_value *bt_value_from_ini(const char *arg,
+               GString *ini_error)
 {
        /* Lexical scanner configuration */
        GScannerConfig scanner_config = {
@@ -539,7 +612,7 @@ struct bt_value *bt_value_from_ini(const char *arg, GString *ini_error)
        goto end;
 
 error:
-       BT_PUT(state.params);
+       BT_VALUE_PUT_REF_AND_RESET(state.params);
 
 end:
        if (state.scanner) {
@@ -557,9 +630,9 @@ end:
  * Return value is owned by the caller.
  */
 static
-struct bt_value *bt_value_from_arg(const char *arg)
+bt_value *bt_value_from_arg(const char *arg)
 {
-       struct bt_value *params = NULL;
+       bt_value *params = NULL;
        GString *ini_error = NULL;
 
        ini_error = g_string_new(NULL);
@@ -579,6 +652,7 @@ end:
        if (ini_error) {
                g_string_free(ini_error, TRUE);
        }
+
        return params;
 }
 
@@ -599,7 +673,7 @@ end:
  */
 static
 void plugin_comp_cls_names(const char *arg, char **name, char **plugin,
-               char **comp_cls, enum bt_component_class_type *comp_cls_type)
+               char **comp_cls, bt_component_class_type *comp_cls_type)
 {
        const char *at = arg;
        GString *gs_name = NULL;
@@ -741,7 +815,7 @@ void print_version(void)
  * Destroys a component configuration.
  */
 static
-void bt_config_component_destroy(struct bt_object *obj)
+void bt_config_component_destroy(bt_object *obj)
 {
        struct bt_config_component *bt_config_component =
                container_of(obj, struct bt_config_component, base);
@@ -762,7 +836,7 @@ void bt_config_component_destroy(struct bt_object *obj)
                g_string_free(bt_config_component->instance_name, TRUE);
        }
 
-       BT_PUT(bt_config_component->params);
+       BT_VALUE_PUT_REF_AND_RESET(bt_config_component->params);
        g_free(bt_config_component);
 
 end:
@@ -778,7 +852,7 @@ end:
  */
 static
 struct bt_config_component *bt_config_component_create(
-               enum bt_component_class_type type,
+               bt_component_class_type type,
                const char *plugin_name, const char *comp_cls_name)
 {
        struct bt_config_component *cfg_component = NULL;
@@ -789,7 +863,8 @@ struct bt_config_component *bt_config_component_create(
                goto error;
        }
 
-       bt_object_init(cfg_component, bt_config_component_destroy);
+       bt_object_init_shared(&cfg_component->base,
+               bt_config_component_destroy);
        cfg_component->type = type;
        cfg_component->plugin_name = g_string_new(plugin_name);
        if (!cfg_component->plugin_name) {
@@ -819,7 +894,7 @@ struct bt_config_component *bt_config_component_create(
        goto end;
 
 error:
-       BT_PUT(cfg_component);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg_component);
 
 end:
        return cfg_component;
@@ -836,7 +911,7 @@ struct bt_config_component *bt_config_component_from_arg(const char *arg)
        char *name = NULL;
        char *plugin_name = NULL;
        char *comp_cls_name = NULL;
-       enum bt_component_class_type type;
+       bt_component_class_type type;
 
        plugin_comp_cls_names(arg, &name, &plugin_name, &comp_cls_name, &type);
        if (!plugin_name || !comp_cls_name) {
@@ -855,7 +930,7 @@ struct bt_config_component *bt_config_component_from_arg(const char *arg)
        goto end;
 
 error:
-       BT_PUT(cfg_comp);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg_comp);
 
 end:
        g_free(name);
@@ -868,7 +943,7 @@ end:
  * Destroys a configuration.
  */
 static
-void bt_config_destroy(struct bt_object *obj)
+void bt_config_destroy(bt_object *obj)
 {
        struct bt_config *cfg =
                container_of(obj, struct bt_config, base);
@@ -877,7 +952,7 @@ void bt_config_destroy(struct bt_object *obj)
                goto end;
        }
 
-       BT_PUT(cfg->plugin_paths);
+       BT_VALUE_PUT_REF_AND_RESET(cfg->plugin_paths);
 
        switch (cfg->command) {
        case BT_CONFIG_COMMAND_RUN:
@@ -901,10 +976,10 @@ void bt_config_destroy(struct bt_object *obj)
        case BT_CONFIG_COMMAND_LIST_PLUGINS:
                break;
        case BT_CONFIG_COMMAND_HELP:
-               BT_PUT(cfg->cmd_data.help.cfg_component);
+               BT_OBJECT_PUT_REF_AND_RESET(cfg->cmd_data.help.cfg_component);
                break;
        case BT_CONFIG_COMMAND_QUERY:
-               BT_PUT(cfg->cmd_data.query.cfg_component);
+               BT_OBJECT_PUT_REF_AND_RESET(cfg->cmd_data.query.cfg_component);
 
                if (cfg->cmd_data.query.object) {
                        g_string_free(cfg->cmd_data.query.object, TRUE);
@@ -1009,10 +1084,10 @@ GScanner *create_csv_identifiers_scanner(void)
  * Return value is owned by the caller.
  */
 static
-struct bt_value *names_from_arg(const char *arg)
+bt_value *names_from_arg(const char *arg)
 {
        GScanner *scanner = NULL;
-       struct bt_value *names = NULL;
+       bt_value *names = NULL;
        bool found_all = false, found_none = false, found_item = false;
 
        names = bt_value_array_create();
@@ -1040,33 +1115,33 @@ struct bt_value *names_from_arg(const char *arg)
                                        !strcmp(identifier, "args") ||
                                        !strcmp(identifier, "arg")) {
                                found_item = true;
-                               if (bt_value_array_append_string(names,
+                               if (bt_value_array_append_string_element(names,
                                                "payload")) {
                                        goto error;
                                }
                        } else if (!strcmp(identifier, "context") ||
                                        !strcmp(identifier, "ctx")) {
                                found_item = true;
-                               if (bt_value_array_append_string(names,
+                               if (bt_value_array_append_string_element(names,
                                                "context")) {
                                        goto error;
                                }
                        } else if (!strcmp(identifier, "scope") ||
                                        !strcmp(identifier, "header")) {
                                found_item = true;
-                               if (bt_value_array_append_string(names,
+                               if (bt_value_array_append_string_element(names,
                                                identifier)) {
                                        goto error;
                                }
                        } else if (!strcmp(identifier, "all")) {
                                found_all = true;
-                               if (bt_value_array_append_string(names,
+                               if (bt_value_array_append_string_element(names,
                                                identifier)) {
                                        goto error;
                                }
                        } else if (!strcmp(identifier, "none")) {
                                found_none = true;
-                               if (bt_value_array_append_string(names,
+                               if (bt_value_array_append_string_element(names,
                                                identifier)) {
                                        goto error;
                                }
@@ -1096,7 +1171,7 @@ end:
         * least one item is specified.
         */
        if (found_item && !found_none && !found_all) {
-               if (bt_value_array_append_string(names, "none")) {
+               if (bt_value_array_append_string_element(names, "none")) {
                        goto error;
                }
        }
@@ -1106,7 +1181,7 @@ end:
        return names;
 
 error:
-       BT_PUT(names);
+       BT_VALUE_PUT_REF_AND_RESET(names);
        if (scanner) {
                g_scanner_destroy(scanner);
        }
@@ -1121,10 +1196,10 @@ error:
  * Return value is owned by the caller.
  */
 static
-struct bt_value *fields_from_arg(const char *arg)
+bt_value *fields_from_arg(const char *arg)
 {
        GScanner *scanner = NULL;
-       struct bt_value *fields;
+       bt_value *fields;
 
        fields = bt_value_array_create();
        if (!fields) {
@@ -1156,7 +1231,7 @@ struct bt_value *fields_from_arg(const char *arg)
                                        !strcmp(identifier, "emf") ||
                                        !strcmp(identifier, "callsite") ||
                                        !strcmp(identifier, "all")) {
-                               if (bt_value_array_append_string(fields,
+                               if (bt_value_array_append_string_element(fields,
                                                identifier)) {
                                        goto error;
                                }
@@ -1179,7 +1254,7 @@ struct bt_value *fields_from_arg(const char *arg)
        goto end;
 
 error:
-       BT_PUT(fields);
+       BT_VALUE_PUT_REF_AND_RESET(fields);
 
 end:
        if (scanner) {
@@ -1210,7 +1285,7 @@ void append_param_arg(GString *params_arg, const char *key, const char *value)
  */
 static
 int insert_flat_params_from_array(GString *params_arg,
-               struct bt_value *names_array, const char *prefix)
+               const bt_value *names_array, const char *prefix)
 {
        int ret = 0;
        int i;
@@ -1239,8 +1314,10 @@ int insert_flat_params_from_array(GString *params_arg,
                goto end;
        }
 
-       for (i = 0; i < bt_value_array_size(names_array); i++) {
-               struct bt_value *str_obj = bt_value_array_get(names_array, i);
+       for (i = 0; i < bt_value_array_get_size(names_array); i++) {
+               const bt_value *str_obj =
+                       bt_value_array_borrow_element_by_index_const(names_array,
+                                                                    i);
                const char *suffix;
                bool is_default = false;
 
@@ -1250,12 +1327,7 @@ int insert_flat_params_from_array(GString *params_arg,
                        goto end;
                }
 
-               ret = bt_value_string_get(str_obj, &suffix);
-               BT_PUT(str_obj);
-               if (ret) {
-                       printf_err("Unexpected error\n");
-                       goto end;
-               }
+               suffix = bt_value_string_get(str_obj);
 
                g_string_assign(tmpstr, prefix);
                g_string_append(tmpstr, "-");
@@ -1363,7 +1435,7 @@ void add_run_cfg_comp(struct bt_config *cfg,
                struct bt_config_component *cfg_comp,
                enum bt_config_component_dest dest)
 {
-       bt_get(cfg_comp);
+       bt_object_get_ref(cfg_comp);
 
        switch (dest) {
        case BT_CONFIG_COMPONENT_DEST_SOURCE:
@@ -1384,7 +1456,7 @@ static
 int add_run_cfg_comp_check_name(struct bt_config *cfg,
                struct bt_config_component *cfg_comp,
                enum bt_config_component_dest dest,
-               struct bt_value *instance_names)
+               bt_value *instance_names)
 {
        int ret = 0;
 
@@ -1394,14 +1466,15 @@ int add_run_cfg_comp_check_name(struct bt_config *cfg,
                goto end;
        }
 
-       if (bt_value_map_has_key(instance_names, cfg_comp->instance_name->str)) {
+       if (bt_value_map_has_entry(instance_names,
+                                  cfg_comp->instance_name->str)) {
                printf_err("Duplicate component instance name:\n    %s\n",
                        cfg_comp->instance_name->str);
                ret = -1;
                goto end;
        }
 
-       if (bt_value_map_insert(instance_names,
+       if (bt_value_map_insert_entry(instance_names,
                        cfg_comp->instance_name->str, bt_value_null)) {
                print_err_oom();
                ret = -1;
@@ -1415,7 +1488,7 @@ end:
 }
 
 static
-int append_env_var_plugin_paths(struct bt_value *plugin_paths)
+int append_env_var_plugin_paths(bt_value *plugin_paths)
 {
        int ret = 0;
        const char *envvar;
@@ -1441,7 +1514,7 @@ end:
 }
 
 static
-int append_home_and_system_plugin_paths(struct bt_value *plugin_paths,
+int append_home_and_system_plugin_paths(bt_value *plugin_paths,
                bool omit_system_plugin_path, bool omit_home_plugin_path)
 {
        int ret;
@@ -1488,7 +1561,8 @@ int append_home_and_system_plugin_paths_cfg(struct bt_config *cfg)
 
 static
 struct bt_config *bt_config_base_create(enum bt_config_command command,
-               struct bt_value *initial_plugin_paths, bool needs_plugins)
+               const bt_value *initial_plugin_paths,
+               bool needs_plugins)
 {
        struct bt_config *cfg;
 
@@ -1499,12 +1573,16 @@ struct bt_config *bt_config_base_create(enum bt_config_command command,
                goto error;
        }
 
-       bt_object_init(cfg, bt_config_destroy);
+       bt_object_init_shared(&cfg->base, bt_config_destroy);
        cfg->command = command;
        cfg->command_needs_plugins = needs_plugins;
 
        if (initial_plugin_paths) {
-               cfg->plugin_paths = bt_get(initial_plugin_paths);
+               bt_value *initial_plugin_paths_copy;
+
+               (void) bt_value_copy(initial_plugin_paths,
+                       &initial_plugin_paths_copy);
+               cfg->plugin_paths = initial_plugin_paths_copy;
        } else {
                cfg->plugin_paths = bt_value_array_create();
                if (!cfg->plugin_paths) {
@@ -1516,7 +1594,7 @@ struct bt_config *bt_config_base_create(enum bt_config_command command,
        goto end;
 
 error:
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        return cfg;
@@ -1524,7 +1602,7 @@ end:
 
 static
 struct bt_config *bt_config_run_create(
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        struct bt_config *cfg;
 
@@ -1536,21 +1614,21 @@ struct bt_config *bt_config_run_create(
        }
 
        cfg->cmd_data.run.sources = g_ptr_array_new_with_free_func(
-               (GDestroyNotify) bt_put);
+               (GDestroyNotify) bt_object_put_ref);
        if (!cfg->cmd_data.run.sources) {
                print_err_oom();
                goto error;
        }
 
        cfg->cmd_data.run.filters = g_ptr_array_new_with_free_func(
-               (GDestroyNotify) bt_put);
+               (GDestroyNotify) bt_object_put_ref);
        if (!cfg->cmd_data.run.filters) {
                print_err_oom();
                goto error;
        }
 
        cfg->cmd_data.run.sinks = g_ptr_array_new_with_free_func(
-               (GDestroyNotify) bt_put);
+               (GDestroyNotify) bt_object_put_ref);
        if (!cfg->cmd_data.run.sinks) {
                print_err_oom();
                goto error;
@@ -1566,7 +1644,7 @@ struct bt_config *bt_config_run_create(
        goto end;
 
 error:
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        return cfg;
@@ -1574,7 +1652,7 @@ end:
 
 static
 struct bt_config *bt_config_list_plugins_create(
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        struct bt_config *cfg;
 
@@ -1588,7 +1666,7 @@ struct bt_config *bt_config_list_plugins_create(
        goto end;
 
 error:
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        return cfg;
@@ -1596,7 +1674,7 @@ end:
 
 static
 struct bt_config *bt_config_help_create(
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        struct bt_config *cfg;
 
@@ -1608,8 +1686,7 @@ struct bt_config *bt_config_help_create(
        }
 
        cfg->cmd_data.help.cfg_component =
-               bt_config_component_create(BT_COMPONENT_CLASS_TYPE_UNKNOWN,
-                       NULL, NULL);
+               bt_config_component_create(-1, NULL, NULL);
        if (!cfg->cmd_data.help.cfg_component) {
                goto error;
        }
@@ -1617,7 +1694,7 @@ struct bt_config *bt_config_help_create(
        goto end;
 
 error:
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        return cfg;
@@ -1625,7 +1702,7 @@ end:
 
 static
 struct bt_config *bt_config_query_create(
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        struct bt_config *cfg;
 
@@ -1645,7 +1722,7 @@ struct bt_config *bt_config_query_create(
        goto end;
 
 error:
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        return cfg;
@@ -1653,7 +1730,7 @@ end:
 
 static
 struct bt_config *bt_config_print_ctf_metadata_create(
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        struct bt_config *cfg;
 
@@ -1679,7 +1756,7 @@ struct bt_config *bt_config_print_ctf_metadata_create(
        goto end;
 
 error:
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        return cfg;
@@ -1687,7 +1764,7 @@ end:
 
 static
 struct bt_config *bt_config_print_lttng_live_sessions_create(
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        struct bt_config *cfg;
 
@@ -1714,7 +1791,7 @@ struct bt_config *bt_config_print_lttng_live_sessions_create(
        goto end;
 
 error:
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        return cfg;
@@ -1722,7 +1799,7 @@ end:
 
 static
 int bt_config_append_plugin_paths_check_setuid_setgid(
-               struct bt_value *plugin_paths, const char *arg)
+               bt_value *plugin_paths, const char *arg)
 {
        int ret = 0;
 
@@ -1766,6 +1843,8 @@ void print_expected_params_format(FILE *fp)
        fprintf(fp, "* Unquoted string with no special characters, and not matching any of\n");
        fprintf(fp, "  the null and boolean value symbols above.\n");
        fprintf(fp, "* Double-quoted string (accepts escape characters).\n");
+       fprintf(fp, "* Array, formatted as an opening `[`, a list of comma-separated values\n");
+       fprintf(fp, "  (as described by the current list) and a closing `]`.\n");
        fprintf(fp, "\n");
        fprintf(fp, "You can put whitespaces allowed around individual `=` and `,` symbols.\n");
        fprintf(fp, "\n");
@@ -1773,7 +1852,8 @@ void print_expected_params_format(FILE *fp)
        fprintf(fp, "\n");
        fprintf(fp, "    many=null, fresh=yes, condition=false, squirrel=-782329,\n");
        fprintf(fp, "    observe=3.14, simple=beef, needs-quotes=\"some string\",\n");
-       fprintf(fp, "    escape.chars-are:allowed=\"this is a \\\" double quote\"\n");
+       fprintf(fp, "    escape.chars-are:allowed=\"this is a \\\" double quote\",\n");
+       fprintf(fp, "    things=[1, \"2\", 3]\n");
        fprintf(fp, "\n");
        fprintf(fp, "IMPORTANT: Make sure to single-quote the whole argument when you run\n");
        fprintf(fp, "babeltrace from a shell.\n");
@@ -1823,7 +1903,7 @@ static
 struct bt_config *bt_config_help_from_args(int argc, const char *argv[],
                int *retcode, bool force_omit_system_plugin_path,
                bool force_omit_home_plugin_path,
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        poptContext pc = NULL;
        char *arg = NULL;
@@ -1875,7 +1955,7 @@ struct bt_config *bt_config_help_from_args(int argc, const char *argv[],
                case OPT_HELP:
                        print_help_usage(stdout);
                        *retcode = -1;
-                       BT_PUT(cfg);
+                       BT_OBJECT_PUT_REF_AND_RESET(cfg);
                        goto end;
                default:
                        printf_err("Unknown command-line option specified (option code %d)\n",
@@ -1909,8 +1989,6 @@ struct bt_config *bt_config_help_from_args(int argc, const char *argv[],
                                comp_cls_name);
                } else {
                        /* Fall back to plugin help */
-                       cfg->cmd_data.help.cfg_component->type =
-                               BT_COMPONENT_CLASS_TYPE_UNKNOWN;
                        g_string_assign(
                                cfg->cmd_data.help.cfg_component->plugin_name,
                                leftover);
@@ -1918,7 +1996,7 @@ struct bt_config *bt_config_help_from_args(int argc, const char *argv[],
        } else {
                print_help_usage(stdout);
                *retcode = -1;
-               BT_PUT(cfg);
+               BT_OBJECT_PUT_REF_AND_RESET(cfg);
                goto end;
        }
 
@@ -1930,7 +2008,7 @@ struct bt_config *bt_config_help_from_args(int argc, const char *argv[],
 
 error:
        *retcode = 1;
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        g_free(plugin_name);
@@ -1987,7 +2065,7 @@ static
 struct bt_config *bt_config_query_from_args(int argc, const char *argv[],
                int *retcode, bool force_omit_system_plugin_path,
                bool force_omit_home_plugin_path,
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        poptContext pc = NULL;
        char *arg = NULL;
@@ -1995,7 +2073,10 @@ struct bt_config *bt_config_query_from_args(int argc, const char *argv[],
        int ret;
        struct bt_config *cfg = NULL;
        const char *leftover;
-       struct bt_value *params = bt_value_null;
+       bt_value *params;
+
+       params = bt_value_null;
+       bt_value_get_ref(bt_value_null);
 
        *retcode = 0;
        cfg = bt_config_query_create(initial_plugin_paths);
@@ -2038,7 +2119,7 @@ struct bt_config *bt_config_query_from_args(int argc, const char *argv[],
                        break;
                case OPT_PARAMS:
                {
-                       bt_put(params);
+                       bt_value_put_ref(params);
                        params = bt_value_from_arg(arg);
                        if (!params) {
                                printf_err("Invalid format for --params option's argument:\n    %s\n",
@@ -2050,7 +2131,7 @@ struct bt_config *bt_config_query_from_args(int argc, const char *argv[],
                case OPT_HELP:
                        print_query_usage(stdout);
                        *retcode = -1;
-                       BT_PUT(cfg);
+                       BT_OBJECT_PUT_REF_AND_RESET(cfg);
                        goto end;
                default:
                        printf_err("Unknown command-line option specified (option code %d)\n",
@@ -2084,11 +2165,12 @@ struct bt_config *bt_config_query_from_args(int argc, const char *argv[],
                }
 
                BT_ASSERT(params);
-               BT_MOVE(cfg->cmd_data.query.cfg_component->params, params);
+               BT_OBJECT_MOVE_REF(cfg->cmd_data.query.cfg_component->params,
+                       params);
        } else {
                print_query_usage(stdout);
                *retcode = -1;
-               BT_PUT(cfg);
+               BT_OBJECT_PUT_REF_AND_RESET(cfg);
                goto end;
        }
 
@@ -2103,7 +2185,7 @@ struct bt_config *bt_config_query_from_args(int argc, const char *argv[],
        } else {
                print_query_usage(stdout);
                *retcode = -1;
-               BT_PUT(cfg);
+               BT_OBJECT_PUT_REF_AND_RESET(cfg);
                goto end;
        }
 
@@ -2121,14 +2203,14 @@ struct bt_config *bt_config_query_from_args(int argc, const char *argv[],
 
 error:
        *retcode = 1;
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        if (pc) {
                poptFreeContext(pc);
        }
 
-       bt_put(params);
+       bt_value_put_ref(params);
        free(arg);
        return cfg;
 }
@@ -2175,7 +2257,7 @@ static
 struct bt_config *bt_config_list_plugins_from_args(int argc, const char *argv[],
                int *retcode, bool force_omit_system_plugin_path,
                bool force_omit_home_plugin_path,
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        poptContext pc = NULL;
        char *arg = NULL;
@@ -2226,7 +2308,7 @@ struct bt_config *bt_config_list_plugins_from_args(int argc, const char *argv[],
                case OPT_HELP:
                        print_list_plugins_usage(stdout);
                        *retcode = -1;
-                       BT_PUT(cfg);
+                       BT_OBJECT_PUT_REF_AND_RESET(cfg);
                        goto end;
                default:
                        printf_err("Unknown command-line option specified (option code %d)\n",
@@ -2259,7 +2341,7 @@ struct bt_config *bt_config_list_plugins_from_args(int argc, const char *argv[],
 
 error:
        *retcode = 1;
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        if (pc) {
@@ -2290,7 +2372,7 @@ void print_run_usage(FILE *fp)
        fprintf(fp, "                                    in the plugin PLUGIN, add it to the graph,\n");
        fprintf(fp, "                                    and optionally name it NAME (you can also\n");
        fprintf(fp, "                                    specify the name with --name)\n");
-       fprintf(fp, "  -C, --connect=CONNECTION          Connect two created components (see the\n");
+       fprintf(fp, "  -x, --connect=CONNECTION          Connect two created components (see the\n");
        fprintf(fp, "                                    expected format of CONNECTION below)\n");
        fprintf(fp, "      --key=KEY                     Set the current initialization string\n");
        fprintf(fp, "                                    parameter key to KEY (see --value)\n");
@@ -2365,25 +2447,26 @@ static
 struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                int *retcode, bool force_omit_system_plugin_path,
                bool force_omit_home_plugin_path,
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        poptContext pc = NULL;
        char *arg = NULL;
        struct bt_config_component *cur_cfg_comp = NULL;
        enum bt_config_component_dest cur_cfg_comp_dest =
                        BT_CONFIG_COMPONENT_DEST_UNKNOWN;
-       struct bt_value *cur_base_params = NULL;
+       bt_value *cur_base_params = NULL;
        int opt, ret = 0;
        struct bt_config *cfg = NULL;
-       struct bt_value *instance_names = NULL;
-       struct bt_value *connection_args = NULL;
+       bt_value *instance_names = NULL;
+       bt_value *connection_args = NULL;
        GString *cur_param_key = NULL;
        char error_buf[256] = { 0 };
        long retry_duration = -1;
+       bt_value_status status;
        struct poptOption run_long_options[] = {
                { "base-params", 'b', POPT_ARG_STRING, NULL, OPT_BASE_PARAMS, NULL, NULL },
                { "component", 'c', POPT_ARG_STRING, NULL, OPT_COMPONENT, NULL, NULL },
-               { "connect", 'C', POPT_ARG_STRING, NULL, OPT_CONNECT, NULL, NULL },
+               { "connect", 'x', POPT_ARG_STRING, NULL, OPT_CONNECT, NULL, NULL },
                { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL },
                { "key", '\0', POPT_ARG_STRING, NULL, OPT_KEY, NULL, NULL },
                { "name", 'n', POPT_ARG_STRING, NULL, OPT_NAME, NULL, NULL },
@@ -2475,7 +2558,7 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                                ret = add_run_cfg_comp_check_name(cfg,
                                        cur_cfg_comp, cur_cfg_comp_dest,
                                        instance_names);
-                               BT_PUT(cur_cfg_comp);
+                               BT_OBJECT_PUT_REF_AND_RESET(cur_cfg_comp);
                                if (ret) {
                                        goto error;
                                }
@@ -2503,9 +2586,10 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                        }
 
                        BT_ASSERT(cur_base_params);
-                       bt_put(cur_cfg_comp->params);
-                       cur_cfg_comp->params = bt_value_copy(cur_base_params);
-                       if (!cur_cfg_comp->params) {
+                       bt_value_put_ref(cur_cfg_comp->params);
+                       status = bt_value_copy(cur_base_params,
+                               &cur_cfg_comp->params);
+                       if (status != BT_VALUE_STATUS_OK) {
                                print_err_oom();
                                goto error;
                        }
@@ -2515,8 +2599,8 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                }
                case OPT_PARAMS:
                {
-                       struct bt_value *params;
-                       struct bt_value *params_to_set;
+                       bt_value *params;
+                       bt_value *params_to_set;
 
                        if (!cur_cfg_comp) {
                                printf_err("Cannot add parameters to unavailable component:\n    %s\n",
@@ -2531,16 +2615,16 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                                goto error;
                        }
 
-                       params_to_set = bt_value_map_extend(cur_cfg_comp->params,
-                               params);
-                       BT_PUT(params);
-                       if (!params_to_set) {
+                       status = bt_value_map_extend(cur_cfg_comp->params,
+                               params, &params_to_set);
+                       BT_VALUE_PUT_REF_AND_RESET(params);
+                       if (status != BT_VALUE_STATUS_OK) {
                                printf_err("Cannot extend current component parameters with --params option's argument:\n    %s\n",
                                        arg);
                                goto error;
                        }
 
-                       BT_MOVE(cur_cfg_comp->params, params_to_set);
+                       BT_OBJECT_MOVE_REF(cur_cfg_comp->params, params_to_set);
                        break;
                }
                case OPT_KEY:
@@ -2564,7 +2648,7 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                                goto error;
                        }
 
-                       if (bt_value_map_insert_string(cur_cfg_comp->params,
+                       if (bt_value_map_insert_string_entry(cur_cfg_comp->params,
                                        cur_param_key->str, arg)) {
                                print_err_oom();
                                goto error;
@@ -2581,7 +2665,8 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                        break;
                case OPT_BASE_PARAMS:
                {
-                       struct bt_value *params = bt_value_from_arg(arg);
+                       bt_value *params =
+                               bt_value_from_arg(arg);
 
                        if (!params) {
                                printf_err("Invalid format for --base-params option's argument:\n    %s\n",
@@ -2589,11 +2674,11 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                                goto error;
                        }
 
-                       BT_MOVE(cur_base_params, params);
+                       BT_OBJECT_MOVE_REF(cur_base_params, params);
                        break;
                }
                case OPT_RESET_BASE_PARAMS:
-                       BT_PUT(cur_base_params);
+                       BT_VALUE_PUT_REF_AND_RESET(cur_base_params);
                        cur_base_params = bt_value_map_create();
                        if (!cur_base_params) {
                                print_err_oom();
@@ -2601,8 +2686,8 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                        }
                        break;
                case OPT_CONNECT:
-                       if (bt_value_array_append_string(connection_args,
-                                       arg)) {
+                       if (bt_value_array_append_string_element(
+                                       connection_args, arg)) {
                                print_err_oom();
                                goto error;
                        }
@@ -2620,7 +2705,7 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                case OPT_HELP:
                        print_run_usage(stdout);
                        *retcode = -1;
-                       BT_PUT(cfg);
+                       BT_OBJECT_PUT_REF_AND_RESET(cfg);
                        goto end;
                default:
                        printf_err("Unknown command-line option specified (option code %d)\n",
@@ -2649,7 +2734,7 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
        if (cur_cfg_comp) {
                ret = add_run_cfg_comp_check_name(cfg, cur_cfg_comp,
                        cur_cfg_comp_dest, instance_names);
-               BT_PUT(cur_cfg_comp);
+               BT_OBJECT_PUT_REF_AND_RESET(cur_cfg_comp);
                if (ret) {
                        goto error;
                }
@@ -2669,7 +2754,8 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
                goto error;
        }
 
-       ret = bt_config_cli_args_create_connections(cfg, connection_args,
+       ret = bt_config_cli_args_create_connections(cfg,
+               connection_args,
                error_buf, 256);
        if (ret) {
                printf_err("Cannot creation connections:\n%s", error_buf);
@@ -2680,7 +2766,7 @@ struct bt_config *bt_config_run_from_args(int argc, const char *argv[],
 
 error:
        *retcode = 1;
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        if (pc) {
@@ -2692,23 +2778,23 @@ end:
        }
 
        free(arg);
-       BT_PUT(cur_cfg_comp);
-       BT_PUT(cur_base_params);
-       BT_PUT(instance_names);
-       BT_PUT(connection_args);
+       BT_OBJECT_PUT_REF_AND_RESET(cur_cfg_comp);
+       BT_VALUE_PUT_REF_AND_RESET(cur_base_params);
+       BT_VALUE_PUT_REF_AND_RESET(instance_names);
+       BT_VALUE_PUT_REF_AND_RESET(connection_args);
        return cfg;
 }
 
 static
-struct bt_config *bt_config_run_from_args_array(struct bt_value *run_args,
+struct bt_config *bt_config_run_from_args_array(const bt_value *run_args,
                int *retcode, bool force_omit_system_plugin_path,
                bool force_omit_home_plugin_path,
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        struct bt_config *cfg = NULL;
        const char **argv;
        int64_t i, len;
-       const size_t argc = bt_value_array_size(run_args) + 1;
+       const size_t argc = bt_value_array_get_size(run_args) + 1;
 
        argv = calloc(argc, sizeof(*argv));
        if (!argv) {
@@ -2718,22 +2804,21 @@ struct bt_config *bt_config_run_from_args_array(struct bt_value *run_args,
 
        argv[0] = "run";
 
-       len = bt_value_array_size(run_args);
+       len = bt_value_array_get_size(run_args);
        if (len < 0) {
                printf_err("Invalid executable arguments\n");
                goto end;
        }
        for (i = 0; i < len; i++) {
-               int ret;
-               struct bt_value *arg_value = bt_value_array_get(run_args, i);
+               const bt_value *arg_value =
+                       bt_value_array_borrow_element_by_index_const(run_args,
+                                                                    i);
                const char *arg;
 
                BT_ASSERT(arg_value);
-               ret = bt_value_string_get(arg_value, &arg);
-               BT_ASSERT(ret == 0);
+               arg = bt_value_string_get(arg_value);
                BT_ASSERT(arg);
                argv[i + 1] = arg;
-               bt_put(arg_value);
        }
 
        cfg = bt_config_run_from_args(argc, argv, retcode,
@@ -2925,7 +3010,7 @@ struct poptOption convert_long_options[] = {
 
 static
 GString *get_component_auto_name(const char *prefix,
-               struct bt_value *existing_names)
+               const bt_value *existing_names)
 {
        unsigned int i = 0;
        GString *auto_name = g_string_new(NULL);
@@ -2935,7 +3020,7 @@ GString *get_component_auto_name(const char *prefix,
                goto end;
        }
 
-       if (!bt_value_map_has_key(existing_names, prefix)) {
+       if (!bt_value_map_has_entry(existing_names, prefix)) {
                g_string_assign(auto_name, prefix);
                goto end;
        }
@@ -2943,7 +3028,7 @@ GString *get_component_auto_name(const char *prefix,
        do {
                g_string_printf(auto_name, "%s-%d", prefix, i);
                i++;
-       } while (bt_value_map_has_key(existing_names, auto_name->str));
+       } while (bt_value_map_has_entry(existing_names, auto_name->str));
 
 end:
        return auto_name;
@@ -2954,12 +3039,12 @@ struct implicit_component_args {
        GString *comp_arg;
        GString *name_arg;
        GString *params_arg;
-       struct bt_value *extra_params;
+       bt_value *extra_params;
 };
 
 static
 int assign_name_to_implicit_component(struct implicit_component_args *args,
-               const char *prefix, struct bt_value *existing_names,
+               const char *prefix, bt_value *existing_names,
                GList **comp_names, bool append_to_comp_names)
 {
        int ret = 0;
@@ -2969,7 +3054,8 @@ int assign_name_to_implicit_component(struct implicit_component_args *args,
                goto end;
        }
 
-       name = get_component_auto_name(prefix, existing_names);
+       name = get_component_auto_name(prefix,
+               existing_names);
 
        if (!name) {
                ret = -1;
@@ -2978,7 +3064,7 @@ int assign_name_to_implicit_component(struct implicit_component_args *args,
 
        g_string_assign(args->name_arg, name->str);
 
-       if (bt_value_map_insert(existing_names, name->str,
+       if (bt_value_map_insert_entry(existing_names, name->str,
                        bt_value_null)) {
                print_err_oom();
                ret = -1;
@@ -3001,7 +3087,7 @@ end:
 static
 int append_run_args_for_implicit_component(
                struct implicit_component_args *impl_args,
-               struct bt_value *run_args)
+               bt_value *run_args)
 {
        int ret = 0;
        size_t i;
@@ -3010,55 +3096,53 @@ int append_run_args_for_implicit_component(
                goto end;
        }
 
-       if (bt_value_array_append_string(run_args, "--component")) {
+       if (bt_value_array_append_string_element(run_args, "--component")) {
                print_err_oom();
                goto error;
        }
 
-       if (bt_value_array_append_string(run_args, impl_args->comp_arg->str)) {
+       if (bt_value_array_append_string_element(run_args, impl_args->comp_arg->str)) {
                print_err_oom();
                goto error;
        }
 
-       if (bt_value_array_append_string(run_args, "--name")) {
+       if (bt_value_array_append_string_element(run_args, "--name")) {
                print_err_oom();
                goto error;
        }
 
-       if (bt_value_array_append_string(run_args, impl_args->name_arg->str)) {
+       if (bt_value_array_append_string_element(run_args, impl_args->name_arg->str)) {
                print_err_oom();
                goto error;
        }
 
        if (impl_args->params_arg->len > 0) {
-               if (bt_value_array_append_string(run_args, "--params")) {
+               if (bt_value_array_append_string_element(run_args, "--params")) {
                        print_err_oom();
                        goto error;
                }
 
-               if (bt_value_array_append_string(run_args,
+               if (bt_value_array_append_string_element(run_args,
                                impl_args->params_arg->str)) {
                        print_err_oom();
                        goto error;
                }
        }
 
-       for (i = 0; i < bt_value_array_size(impl_args->extra_params); i++) {
-               struct bt_value *elem;
+       for (i = 0; i < bt_value_array_get_size(impl_args->extra_params);
+                       i++) {
+               const bt_value *elem;
                const char *arg;
 
-               elem = bt_value_array_get(impl_args->extra_params, i);
+               elem = bt_value_array_borrow_element_by_index(impl_args->extra_params,
+                                                             i);
                if (!elem) {
                        goto error;
                }
 
                BT_ASSERT(bt_value_is_string(elem));
-               if (bt_value_string_get(elem, &arg)) {
-                       goto error;
-               }
-
-               ret = bt_value_array_append_string(run_args, arg);
-               bt_put(elem);
+               arg = bt_value_string_get(elem);
+               ret = bt_value_array_append_string_element(run_args, arg);
                if (ret) {
                        print_err_oom();
                        goto error;
@@ -3091,7 +3175,7 @@ void finalize_implicit_component_args(struct implicit_component_args *args)
                g_string_free(args->params_arg, TRUE);
        }
 
-       bt_put(args->extra_params);
+       bt_value_put_ref(args->extra_params);
 }
 
 static
@@ -3149,25 +3233,25 @@ int append_implicit_component_extra_param(struct implicit_component_args *args,
        BT_ASSERT(key);
        BT_ASSERT(value);
 
-       if (bt_value_array_append_string(args->extra_params, "--key")) {
+       if (bt_value_array_append_string_element(args->extra_params, "--key")) {
                print_err_oom();
                ret = -1;
                goto end;
        }
 
-       if (bt_value_array_append_string(args->extra_params, key)) {
+       if (bt_value_array_append_string_element(args->extra_params, key)) {
                print_err_oom();
                ret = -1;
                goto end;
        }
 
-       if (bt_value_array_append_string(args->extra_params, "--value")) {
+       if (bt_value_array_append_string_element(args->extra_params, "--value")) {
                print_err_oom();
                ret = -1;
                goto end;
        }
 
-       if (bt_value_array_append_string(args->extra_params, value)) {
+       if (bt_value_array_append_string_element(args->extra_params, value)) {
                print_err_oom();
                ret = -1;
                goto end;
@@ -3180,7 +3264,8 @@ end:
 static
 int convert_append_name_param(enum bt_config_component_dest dest,
                GString *cur_name, GString *cur_name_prefix,
-               struct bt_value *run_args, struct bt_value *all_names,
+               bt_value *run_args,
+               bt_value *all_names,
                GList **source_names, GList **filter_names,
                GList **sink_names)
 {
@@ -3204,8 +3289,8 @@ int convert_append_name_param(enum bt_config_component_dest dest,
                         * An explicit name was provided for the user
                         * component.
                         */
-                       if (bt_value_map_has_key(all_names,
-                                       cur_name->str)) {
+                       if (bt_value_map_has_entry(all_names,
+                                                  cur_name->str)) {
                                printf_err("Duplicate component instance name:\n    %s\n",
                                        cur_name->str);
                                goto error;
@@ -3223,7 +3308,7 @@ int convert_append_name_param(enum bt_config_component_dest dest,
                 * Remember this name globally, for the uniqueness of
                 * all component names.
                 */
-               if (bt_value_map_insert(all_names, name->str, bt_value_null)) {
+               if (bt_value_map_insert_entry(all_names, name->str, bt_value_null)) {
                        print_err_oom();
                        goto error;
                }
@@ -3232,12 +3317,12 @@ int convert_append_name_param(enum bt_config_component_dest dest,
                 * Append the --name option if necessary.
                 */
                if (append_name_opt) {
-                       if (bt_value_array_append_string(run_args, "--name")) {
+                       if (bt_value_array_append_string_element(run_args, "--name")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, name->str)) {
+                       if (bt_value_array_append_string_element(run_args, name->str)) {
                                print_err_oom();
                                goto error;
                        }
@@ -3305,7 +3390,7 @@ end:
  * function.
  */
 static
-int append_connect_arg(struct bt_value *run_args,
+int append_connect_arg(bt_value *run_args,
                const char *upstream_name, const char *downstream_name)
 {
        int ret = 0;
@@ -3319,7 +3404,7 @@ int append_connect_arg(struct bt_value *run_args,
                goto end;
        }
 
-       ret = bt_value_array_append_string(run_args, "--connect");
+       ret = bt_value_array_append_string_element(run_args, "--connect");
        if (ret) {
                print_err_oom();
                ret = -1;
@@ -3329,7 +3414,7 @@ int append_connect_arg(struct bt_value *run_args,
        g_string_append(arg, e_upstream_name->str);
        g_string_append_c(arg, ':');
        g_string_append(arg, e_downstream_name->str);
-       ret = bt_value_array_append_string(run_args, arg->str);
+       ret = bt_value_array_append_string_element(run_args, arg->str);
        if (ret) {
                print_err_oom();
                ret = -1;
@@ -3356,7 +3441,7 @@ end:
  * Appends the run command's --connect options for the convert command.
  */
 static
-int convert_auto_connect(struct bt_value *run_args,
+int convert_auto_connect(bt_value *run_args,
                GList *source_names, GList *filter_names,
                GList *sink_names)
 {
@@ -3516,6 +3601,7 @@ int fill_implicit_ctf_inputs_args(GPtrArray *implicit_ctf_inputs_args,
 {
        int ret = 0;
        GList *leftover;
+       bt_value_status status;
 
        for (leftover = leftovers; leftover != NULL;
                        leftover = g_list_next(leftover)) {
@@ -3538,10 +3624,10 @@ int fill_implicit_ctf_inputs_args(GPtrArray *implicit_ctf_inputs_args,
                 * We need our own copy of the extra parameters because
                 * this is where the unique path goes.
                 */
-               BT_PUT(impl_args->extra_params);
-               impl_args->extra_params =
-                       bt_value_copy(base_implicit_ctf_input_args->extra_params);
-               if (!impl_args->extra_params) {
+               BT_VALUE_PUT_REF_AND_RESET(impl_args->extra_params);
+               status = bt_value_copy(base_implicit_ctf_input_args->extra_params,
+                       &impl_args->extra_params);
+               if (status != BT_VALUE_STATUS_OK) {
                        print_err_oom();
                        destroy_implicit_component_args(impl_args);
                        goto error;
@@ -3577,7 +3663,7 @@ static
 struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                int *retcode, bool force_omit_system_plugin_path,
                bool force_omit_home_plugin_path,
-               struct bt_value *initial_plugin_paths, char *log_level)
+               const bt_value *initial_plugin_paths, char *log_level)
 {
        poptContext pc = NULL;
        char *arg = NULL;
@@ -3596,8 +3682,8 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
        bool print_run_args = false;
        bool print_run_args_0 = false;
        bool print_ctf_metadata = false;
-       struct bt_value *run_args = NULL;
-       struct bt_value *all_names = NULL;
+       bt_value *run_args = NULL;
+       bt_value *all_names = NULL;
        GList *source_names = NULL;
        GList *filter_names = NULL;
        GList *sink_names = NULL;
@@ -3611,12 +3697,14 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
        struct implicit_component_args implicit_debug_info_args = { 0 };
        struct implicit_component_args implicit_muxer_args = { 0 };
        struct implicit_component_args implicit_trimmer_args = { 0 };
-       struct bt_value *plugin_paths = bt_get(initial_plugin_paths);
+       bt_value *plugin_paths;
        char error_buf[256] = { 0 };
        size_t i;
        struct bt_common_lttng_live_url_parts lttng_live_url_parts = { 0 };
        char *output = NULL;
 
+       (void) bt_value_copy(initial_plugin_paths, &plugin_paths);
+
        *retcode = 0;
 
        if (argc <= 1) {
@@ -3732,7 +3820,7 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                switch (opt) {
                case OPT_COMPONENT:
                {
-                       enum bt_component_class_type type;
+                       bt_component_class_type type;
                        const char *type_prefix;
 
                        /* Append current component's name if needed */
@@ -3775,13 +3863,13 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                                abort();
                        }
 
-                       if (bt_value_array_append_string(run_args,
+                       if (bt_value_array_append_string_element(run_args,
                                        "--component")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, arg)) {
+                       if (bt_value_array_append_string_element(run_args, arg)) {
                                print_err_oom();
                                goto error;
                        }
@@ -3804,13 +3892,13 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args,
+                       if (bt_value_array_append_string_element(run_args,
                                        "--params")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, arg)) {
+                       if (bt_value_array_append_string_element(run_args, arg)) {
                                print_err_oom();
                                goto error;
                        }
@@ -3822,22 +3910,22 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, "--key")) {
+                       if (bt_value_array_append_string_element(run_args, "--key")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, "path")) {
+                       if (bt_value_array_append_string_element(run_args, "path")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, "--value")) {
+                       if (bt_value_array_append_string_element(run_args, "--value")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, arg)) {
+                       if (bt_value_array_append_string_element(run_args, arg)) {
                                print_err_oom();
                                goto error;
                        }
@@ -3849,22 +3937,22 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, "--key")) {
+                       if (bt_value_array_append_string_element(run_args, "--key")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, "url")) {
+                       if (bt_value_array_append_string_element(run_args, "url")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, "--value")) {
+                       if (bt_value_array_append_string_element(run_args, "--value")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, arg)) {
+                       if (bt_value_array_append_string_element(run_args, arg)) {
                                print_err_oom();
                                goto error;
                        }
@@ -3876,12 +3964,12 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, "--name")) {
+                       if (bt_value_array_append_string_element(run_args, "--name")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, arg)) {
+                       if (bt_value_array_append_string_element(run_args, arg)) {
                                print_err_oom();
                                goto error;
                        }
@@ -3891,20 +3979,20 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                case OPT_OMIT_HOME_PLUGIN_PATH:
                        force_omit_home_plugin_path = true;
 
-                       if (bt_value_array_append_string(run_args,
+                       if (bt_value_array_append_string_element(run_args,
                                        "--omit-home-plugin-path")) {
                                print_err_oom();
                                goto error;
                        }
                        break;
                case OPT_RETRY_DURATION:
-                       if (bt_value_array_append_string(run_args,
+                       if (bt_value_array_append_string_element(run_args,
                                        "--retry-duration")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, arg)) {
+                       if (bt_value_array_append_string_element(run_args, arg)) {
                                print_err_oom();
                                goto error;
                        }
@@ -3912,7 +4000,7 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                case OPT_OMIT_SYSTEM_PLUGIN_PATH:
                        force_omit_system_plugin_path = true;
 
-                       if (bt_value_array_append_string(run_args,
+                       if (bt_value_array_append_string_element(run_args,
                                        "--omit-system-plugin-path")) {
                                print_err_oom();
                                goto error;
@@ -3924,13 +4012,13 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args,
+                       if (bt_value_array_append_string_element(run_args,
                                        "--plugin-path")) {
                                print_err_oom();
                                goto error;
                        }
 
-                       if (bt_value_array_append_string(run_args, arg)) {
+                       if (bt_value_array_append_string_element(run_args, arg)) {
                                print_err_oom();
                                goto error;
                        }
@@ -3938,7 +4026,7 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                case OPT_HELP:
                        print_convert_usage(stdout);
                        *retcode = -1;
-                       BT_PUT(cfg);
+                       BT_OBJECT_PUT_REF_AND_RESET(cfg);
                        goto end;
                case OPT_BEGIN:
                case OPT_CLOCK_CYCLES:
@@ -4094,7 +4182,7 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                        append_implicit_component_param(
                                &implicit_text_args, "clock-gmt", "yes");
                        append_implicit_component_param(
-                               &implicit_trimmer_args, "clock-gmt", "yes");
+                               &implicit_trimmer_args, "gmt", "yes");
                        implicit_text_args.exists = true;
                        break;
                case OPT_CLOCK_OFFSET:
@@ -4149,7 +4237,7 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                        break;
                case OPT_FIELDS:
                {
-                       struct bt_value *fields = fields_from_arg(arg);
+                       bt_value *fields = fields_from_arg(arg);
 
                        if (!fields) {
                                goto error;
@@ -4159,7 +4247,7 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                        ret = insert_flat_params_from_array(
                                implicit_text_args.params_arg,
                                fields, "field");
-                       bt_put(fields);
+                       bt_value_put_ref(fields);
                        if (ret) {
                                goto error;
                        }
@@ -4167,7 +4255,7 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                }
                case OPT_NAMES:
                {
-                       struct bt_value *names = names_from_arg(arg);
+                       bt_value *names = names_from_arg(arg);
 
                        if (!names) {
                                goto error;
@@ -4177,7 +4265,7 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                        ret = insert_flat_params_from_array(
                                implicit_text_args.params_arg,
                                names, "name");
-                       bt_put(names);
+                       bt_value_put_ref(names);
                        if (ret) {
                                goto error;
                        }
@@ -4666,17 +4754,16 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                        goto error;
                }
 
-               for (i = 0; i < bt_value_array_size(run_args); i++) {
-                       struct bt_value *arg_value =
-                               bt_value_array_get(run_args, i);
+               for (i = 0; i < bt_value_array_get_size(run_args); i++) {
+                       const bt_value *arg_value =
+                               bt_value_array_borrow_element_by_index(run_args,
+                                                                      i);
                        const char *arg;
                        GString *quoted = NULL;
                        const char *arg_to_print;
 
                        BT_ASSERT(arg_value);
-                       ret = bt_value_string_get(arg_value, &arg);
-                       BT_ASSERT(ret == 0);
-                       BT_PUT(arg_value);
+                       arg = bt_value_string_get(arg_value);
 
                        if (print_run_args) {
                                quoted = bt_common_shell_quote(arg, true);
@@ -4695,7 +4782,7 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                                g_string_free(quoted, TRUE);
                        }
 
-                       if (i < bt_value_array_size(run_args) - 1) {
+                       if (i < bt_value_array_get_size(run_args) - 1) {
                                if (print_run_args) {
                                        putchar(' ');
                                } else {
@@ -4705,13 +4792,14 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
                }
 
                *retcode = -1;
-               BT_PUT(cfg);
+               BT_OBJECT_PUT_REF_AND_RESET(cfg);
                goto end;
        }
 
        cfg = bt_config_run_from_args_array(run_args, retcode,
-               force_omit_system_plugin_path, force_omit_home_plugin_path,
-               initial_plugin_paths);
+                                           force_omit_system_plugin_path,
+                                           force_omit_home_plugin_path,
+                                           initial_plugin_paths);
        if (!cfg) {
                goto error;
        }
@@ -4721,7 +4809,7 @@ struct bt_config *bt_config_convert_from_args(int argc, const char *argv[],
 
 error:
        *retcode = 1;
-       BT_PUT(cfg);
+       BT_OBJECT_PUT_REF_AND_RESET(cfg);
 
 end:
        if (pc) {
@@ -4743,8 +4831,8 @@ end:
                g_ptr_array_free(implicit_ctf_inputs_args, TRUE);
        }
 
-       bt_put(run_args);
-       bt_put(all_names);
+       bt_value_put_ref(run_args);
+       bt_value_put_ref(all_names);
        destroy_glist_of_gstring(source_names);
        destroy_glist_of_gstring(filter_names);
        destroy_glist_of_gstring(sink_names);
@@ -4757,7 +4845,7 @@ end:
        finalize_implicit_component_args(&implicit_debug_info_args);
        finalize_implicit_component_args(&implicit_muxer_args);
        finalize_implicit_component_args(&implicit_trimmer_args);
-       bt_put(plugin_paths);
+       bt_value_put_ref(plugin_paths);
        bt_common_destroy_lttng_live_url_parts(&lttng_live_url_parts);
        return cfg;
 }
@@ -4774,7 +4862,7 @@ void print_gen_usage(FILE *fp)
        fprintf(fp, "\n");
        fprintf(fp, "  -d, --debug          Enable debug mode (same as --log-level=V)\n");
        fprintf(fp, "  -h, --help           Show this help and quit\n");
-       fprintf(fp, "      --log-level=LVL  Set all log levels to LVL (`N`, `V`, `D`,\n");
+       fprintf(fp, "  -l, --log-level=LVL  Set all log levels to LVL (`N`, `V`, `D`,\n");
        fprintf(fp, "                       `I`, `W` (default), `E`, or `F`)\n");
        fprintf(fp, "  -v, --verbose        Enable verbose mode (same as --log-level=I)\n");
        fprintf(fp, "  -V, --version        Show version and quit\n");
@@ -4825,7 +4913,7 @@ char log_level_from_arg(const char *arg)
 struct bt_config *bt_config_cli_args_create(int argc, const char *argv[],
                int *retcode, bool force_omit_system_plugin_path,
                bool force_omit_home_plugin_path,
-               struct bt_value *initial_plugin_paths)
+               const bt_value *initial_plugin_paths)
 {
        struct bt_config *config = NULL;
        int i;
@@ -4852,7 +4940,7 @@ struct bt_config *bt_config_cli_args_create(int argc, const char *argv[],
                        goto end;
                }
        } else {
-               bt_get(initial_plugin_paths);
+               bt_value_get_ref(initial_plugin_paths);
        }
 
        if (argc <= 1) {
@@ -4881,7 +4969,8 @@ struct bt_config *bt_config_cli_args_create(int argc, const char *argv[],
                                 */
                                log_level = 'I';
                        }
-               } else if (strcmp(cur_arg, "--log-level") == 0) {
+               } else if (strcmp(cur_arg, "--log-level") == 0 ||
+                               strcmp(cur_arg, "-l") == 0) {
                        if (!next_arg) {
                                printf_err("Missing log level value for --log-level option\n");
                                *retcode = 1;
@@ -4900,6 +4989,16 @@ struct bt_config *bt_config_cli_args_create(int argc, const char *argv[],
                } else if (strncmp(cur_arg, "--log-level=", 12) == 0) {
                        const char *arg = &cur_arg[12];
 
+                       log_level = log_level_from_arg(arg);
+                       if (log_level == 'U') {
+                               printf_err("Invalid argument for --log-level option:\n    %s\n",
+                                       arg);
+                               *retcode = 1;
+                               goto end;
+                       }
+               } else if (strncmp(cur_arg, "-l", 2) == 0) {
+                       const char *arg = &cur_arg[2];
+
                        log_level = log_level_from_arg(arg);
                        if (log_level == 'U') {
                                printf_err("Invalid argument for --log-level option:\n    %s\n",
@@ -5003,6 +5102,6 @@ struct bt_config *bt_config_cli_args_create(int argc, const char *argv[],
        }
 
 end:
-       bt_put(initial_plugin_paths);
+       bt_value_put_ref(initial_plugin_paths);
        return config;
 }
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