Add loglevel support

[babeltrace.git] / formats / ctf / metadata / ctf-visitor-generate-io-struct.c

diff --git a/formats/ctf/metadata/ctf-visitor-generate-io-struct.c b/formats/ctf/metadata/ctf-visitor-generate-io-struct.c
index 82af10a10f259be1fd05a6467bc210aa13c0ae83..6e828fcd13059b20f466a53eb07f4ea7cf59a23a 100644 (file)
--- a/formats/ctf/metadata/ctf-visitor-generate-io-struct.c
+++ b/formats/ctf/metadata/ctf-visitor-generate-io-struct.c
@@ -104,6 +104,23 @@ int get_unary_unsigned(struct cds_list_head *head, uint64_t *value)
        return 0;
 }
 
+static
+int get_unary_signed(struct cds_list_head *head, int64_t *value)
+{
+       struct ctf_node *node;
+       int i = 0;
+
+       cds_list_for_each_entry(node, head, siblings) {
+               assert(node->type == NODE_UNARY_EXPRESSION);
+               assert(node->u.unary_expression.type == UNARY_UNSIGNED_CONSTANT);
+               assert(node->u.unary_expression.link == UNARY_LINK_UNKNOWN);
+               assert(i == 0);
+               *value = node->u.unary_expression.u.signed_constant;
+               i++;
+       }
+       return 0;
+}
+
 static
 int get_unary_uuid(struct cds_list_head *head, uuid_t *uuid)
 {
@@ -1550,6 +1567,36 @@ int ctf_event_declaration_visit(FILE *fd, int depth, struct ctf_node *node, stru
                                goto error;
                        }
                        event->fields_decl = container_of(declaration, struct declaration_struct, p);
+               } else if (!strcmp(left, "loglevel.identifier")) {
+                       char *right;
+
+                       if (CTF_EVENT_FIELD_IS_SET(event, loglevel_identifier)) {
+                               fprintf(fd, "[error] %s: identifier already declared in event declaration\n", __func__);
+                               ret = -EPERM;
+                               goto error;
+                       }
+                       right = concatenate_unary_strings(&node->u.ctf_expression.right);
+                       if (!right) {
+                               fprintf(fd, "[error] %s: unexpected unary expression for event identifier\n", __func__);
+                               ret = -EINVAL;
+                               goto error;
+                       }
+                       event->loglevel_identifier = g_quark_from_string(right);
+                       g_free(right);
+                       CTF_EVENT_SET_FIELD(event, loglevel_identifier);
+               } else if (!strcmp(left, "loglevel.value")) {
+                       if (CTF_EVENT_FIELD_IS_SET(event, loglevel_value)) {
+                               fprintf(fd, "[error] %s: loglevel value already declared in event declaration\n", __func__);
+                               ret = -EPERM;
+                               goto error;
+                       }
+                       ret = get_unary_signed(&node->u.ctf_expression.right, &event->loglevel_value);
+                       if (ret) {
+                               fprintf(fd, "[error] %s: unexpected unary expression for event loglevel value\n", __func__);
+                               ret = -EINVAL;
+                               goto error;
+                       }
+                       CTF_EVENT_SET_FIELD(event, loglevel_value);
                } else {
                        fprintf(fd, "[error] %s: attribute \"%s\" is unknown in event declaration.\n", __func__, left);
                        ret = -EINVAL;