Add stream packet header accessors

[babeltrace.git] / formats / ctf / ir / event-fields.c

diff --git a/formats/ctf/ir/event-fields.c b/formats/ctf/ir/event-fields.c
index ed2cf489fc4e82b535c27885793afe8ecb30ee57..14fade72cb41d88e8f4c231e6dfcf8fb153f7c49 100644 (file)
--- a/formats/ctf/ir/event-fields.c
+++ b/formats/ctf/ir/event-fields.c
@@ -88,6 +88,21 @@ int bt_ctf_field_array_validate(struct bt_ctf_field *field);
 static
 int bt_ctf_field_sequence_validate(struct bt_ctf_field *field);
 
+static
+int bt_ctf_field_generic_reset(struct bt_ctf_field *field);
+static
+int bt_ctf_field_structure_reset(struct bt_ctf_field *field);
+static
+int bt_ctf_field_variant_reset(struct bt_ctf_field *field);
+static
+int bt_ctf_field_enumeration_reset(struct bt_ctf_field *field);
+static
+int bt_ctf_field_array_reset(struct bt_ctf_field *field);
+static
+int bt_ctf_field_sequence_reset(struct bt_ctf_field *field);
+static
+int bt_ctf_field_string_reset(struct bt_ctf_field *field);
+
 static
 int bt_ctf_field_integer_serialize(struct bt_ctf_field *,
                struct ctf_stream_pos *);
@@ -155,6 +170,18 @@ int (*field_validate_funcs[])(struct bt_ctf_field *) = {
        [CTF_TYPE_STRING] = bt_ctf_field_generic_validate,
 };
 
+static
+int (*field_reset_funcs[])(struct bt_ctf_field *) = {
+       [CTF_TYPE_INTEGER] = bt_ctf_field_generic_reset,
+       [CTF_TYPE_ENUM] = bt_ctf_field_enumeration_reset,
+       [CTF_TYPE_FLOAT] = bt_ctf_field_generic_reset,
+       [CTF_TYPE_STRUCT] = bt_ctf_field_structure_reset,
+       [CTF_TYPE_VARIANT] = bt_ctf_field_variant_reset,
+       [CTF_TYPE_ARRAY] = bt_ctf_field_array_reset,
+       [CTF_TYPE_SEQUENCE] = bt_ctf_field_sequence_reset,
+       [CTF_TYPE_STRING] = bt_ctf_field_string_reset,
+};
+
 static
 int (*field_serialize_funcs[])(struct bt_ctf_field *,
                struct ctf_stream_pos *) = {
@@ -883,6 +910,28 @@ end:
        return ret;
 }
 
+BT_HIDDEN
+int bt_ctf_field_reset(struct bt_ctf_field *field)
+{
+       int ret = 0;
+       enum ctf_type_id type_id;
+
+       if (!field) {
+               ret = -1;
+               goto end;
+       }
+
+       type_id = bt_ctf_field_type_get_type_id(field->type);
+       if (type_id <= CTF_TYPE_UNKNOWN || type_id >= NR_CTF_TYPES) {
+               ret = -1;
+               goto end;
+       }
+
+       ret = field_reset_funcs[type_id](field);
+end:
+       return ret;
+}
+
 BT_HIDDEN
 int bt_ctf_field_serialize(struct bt_ctf_field *field,
                struct ctf_stream_pos *pos)
@@ -1297,6 +1346,185 @@ end:
        return ret;
 }
 
+static
+int bt_ctf_field_generic_reset(struct bt_ctf_field *field)
+{
+       int ret = 0;
+
+       if (!field) {
+               ret = -1;
+               goto end;
+       }
+
+       field->payload_set = 0;
+end:
+       return ret;
+}
+
+static
+int bt_ctf_field_enumeration_reset(struct bt_ctf_field *field)
+{
+       int ret = 0;
+       struct bt_ctf_field_enumeration *enumeration;
+
+       if (!field) {
+               ret = -1;
+               goto end;
+       }
+
+       enumeration = container_of(field, struct bt_ctf_field_enumeration,
+               parent);
+       if (!enumeration->payload) {
+               goto end;
+       }
+
+       ret = bt_ctf_field_reset(enumeration->payload);
+end:
+       return ret;
+}
+
+static
+int bt_ctf_field_structure_reset(struct bt_ctf_field *field)
+{
+       size_t i;
+       int ret = 0;
+       struct bt_ctf_field_structure *structure;
+
+       if (!field) {
+               ret = -1;
+               goto end;
+       }
+
+       structure = container_of(field, struct bt_ctf_field_structure, parent);
+       for (i = 0; i < structure->fields->len; i++) {
+               struct bt_ctf_field *member = structure->fields->pdata[i];
+
+               if (!member) {
+                       /*
+                        * Structure members are lazily initialized; skip if
+                        * this member has not been allocated yet.
+                        */
+                       continue;
+               }
+
+               ret = bt_ctf_field_reset(member);
+               if (ret) {
+                       goto end;
+               }
+       }
+end:
+       return ret;
+}
+
+static
+int bt_ctf_field_variant_reset(struct bt_ctf_field *field)
+{
+       int ret = 0;
+       struct bt_ctf_field_variant *variant;
+
+       if (!field) {
+               ret = -1;
+               goto end;
+       }
+
+       variant = container_of(field, struct bt_ctf_field_variant, parent);
+       if (variant->payload) {
+               ret = bt_ctf_field_reset(variant->payload);
+       }
+end:
+       return ret;
+}
+
+static
+int bt_ctf_field_array_reset(struct bt_ctf_field *field)
+{
+       size_t i;
+       int ret = 0;
+       struct bt_ctf_field_array *array;
+
+       if (!field) {
+               ret = -1;
+               goto end;
+       }
+
+       array = container_of(field, struct bt_ctf_field_array, parent);
+       for (i = 0; i < array->elements->len; i++) {
+               struct bt_ctf_field *member = array->elements->pdata[i];
+
+               if (!member) {
+                       /*
+                        * Array elements are lazily initialized; skip if
+                        * this member has not been allocated yet.
+                        */
+                       continue;
+               }
+
+               ret = bt_ctf_field_reset(member);
+               if (ret) {
+                       goto end;
+               }
+       }
+end:
+       return ret;
+}
+
+static
+int bt_ctf_field_sequence_reset(struct bt_ctf_field *field)
+{
+       size_t i;
+       int ret = 0;
+       struct bt_ctf_field_sequence *sequence;
+
+       if (!field) {
+               ret = -1;
+               goto end;
+       }
+
+       sequence = container_of(field, struct bt_ctf_field_sequence, parent);
+       for (i = 0; i < sequence->elements->len; i++) {
+               struct bt_ctf_field *member = sequence->elements->pdata[i];
+
+               if (!member) {
+                       /*
+                        * Sequence elements are lazily initialized; skip if
+                        * this member has not been allocated yet.
+                        */
+                       continue;
+               }
+
+               ret = bt_ctf_field_reset(member);
+               if (ret) {
+                       goto end;
+               }
+       }
+end:
+       return ret;
+}
+
+static
+int bt_ctf_field_string_reset(struct bt_ctf_field *field)
+{
+       int ret = 0;
+       struct bt_ctf_field_string *string;
+
+       if (!field) {
+               ret = -1;
+               goto end;
+       }
+
+       ret = bt_ctf_field_generic_reset(field);
+       if (ret) {
+               goto end;
+       }
+
+       string = container_of(field, struct bt_ctf_field_string, parent);
+       if (string->payload) {
+               g_string_truncate(string->payload, 0);
+       }
+end:
+       return ret;
+}
+
 static
 int bt_ctf_field_integer_serialize(struct bt_ctf_field *field,
                struct ctf_stream_pos *pos)