#include "ctf-meta-visitors.hpp"
-static inline
-int set_alignments(struct ctf_field_class *fc)
+static inline int set_alignments(struct ctf_field_class *fc)
{
- int ret = 0;
- uint64_t i;
-
- if (!fc) {
- goto end;
- }
-
- switch (fc->type) {
- case CTF_FIELD_CLASS_TYPE_STRUCT:
- {
- struct ctf_field_class_struct *struct_fc = ctf_field_class_as_struct(fc);
-
- for (i = 0; i < struct_fc->members->len; i++) {
- struct ctf_named_field_class *named_fc =
- ctf_field_class_struct_borrow_member_by_index(
- struct_fc, i);
-
- ret = set_alignments(named_fc->fc);
- if (ret) {
- goto end;
- }
-
- if (named_fc->fc->alignment > fc->alignment) {
- fc->alignment = named_fc->fc->alignment;
- }
- }
-
- break;
- }
- case CTF_FIELD_CLASS_TYPE_VARIANT:
- {
- struct ctf_field_class_variant *var_fc = ctf_field_class_as_variant(fc);
-
- for (i = 0; i < var_fc->options->len; i++) {
- struct ctf_named_field_class *named_fc =
- ctf_field_class_variant_borrow_option_by_index(
- var_fc, i);
-
- ret = set_alignments(named_fc->fc);
- if (ret) {
- goto end;
- }
- }
-
- break;
- }
- case CTF_FIELD_CLASS_TYPE_ARRAY:
- case CTF_FIELD_CLASS_TYPE_SEQUENCE:
- {
- struct ctf_field_class_array_base *array_fc = ctf_field_class_as_array_base(fc);
-
- ret = set_alignments(array_fc->elem_fc);
- if (ret) {
- goto end;
- }
-
- /*
- * Use the alignment of the array/sequence field class's
- * element FC as its own alignment.
- *
- * This is especially important when the array/sequence
- * field's effective length is zero: as per CTF 1.8, the
- * stream data decoding process still needs to align the
- * cursor using the element's alignment [1]:
- *
- * > Arrays are always aligned on their element
- * > alignment requirement.
- *
- * For example:
- *
- * struct {
- * integer { size = 8; } a;
- * integer { size = 8; align = 16; } b[0];
- * integer { size = 8; } c;
- * };
- *
- * When using this to decode the bytes 1, 2, and 3, then
- * the decoded values are:
- *
- * `a`: 1
- * `b`: []
- * `c`: 3
- *
- * [1]: https://diamon.org/ctf/#spec4.2.3
- */
- array_fc->base.alignment = array_fc->elem_fc->alignment;
- break;
- }
- default:
- break;
- }
+ int ret = 0;
+ uint64_t i;
+
+ if (!fc) {
+ goto end;
+ }
+
+ switch (fc->type) {
+ case CTF_FIELD_CLASS_TYPE_STRUCT:
+ {
+ struct ctf_field_class_struct *struct_fc = ctf_field_class_as_struct(fc);
+
+ for (i = 0; i < struct_fc->members->len; i++) {
+ struct ctf_named_field_class *named_fc =
+ ctf_field_class_struct_borrow_member_by_index(struct_fc, i);
+
+ ret = set_alignments(named_fc->fc);
+ if (ret) {
+ goto end;
+ }
+
+ if (named_fc->fc->alignment > fc->alignment) {
+ fc->alignment = named_fc->fc->alignment;
+ }
+ }
+
+ break;
+ }
+ case CTF_FIELD_CLASS_TYPE_VARIANT:
+ {
+ struct ctf_field_class_variant *var_fc = ctf_field_class_as_variant(fc);
+
+ for (i = 0; i < var_fc->options->len; i++) {
+ struct ctf_named_field_class *named_fc =
+ ctf_field_class_variant_borrow_option_by_index(var_fc, i);
+
+ ret = set_alignments(named_fc->fc);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ break;
+ }
+ case CTF_FIELD_CLASS_TYPE_ARRAY:
+ case CTF_FIELD_CLASS_TYPE_SEQUENCE:
+ {
+ struct ctf_field_class_array_base *array_fc = ctf_field_class_as_array_base(fc);
+
+ ret = set_alignments(array_fc->elem_fc);
+ if (ret) {
+ goto end;
+ }
+
+ /*
+ * Use the alignment of the array/sequence field class's
+ * element FC as its own alignment.
+ *
+ * This is especially important when the array/sequence
+ * field's effective length is zero: as per CTF 1.8, the
+ * stream data decoding process still needs to align the
+ * cursor using the element's alignment [1]:
+ *
+ * > Arrays are always aligned on their element
+ * > alignment requirement.
+ *
+ * For example:
+ *
+ * struct {
+ * integer { size = 8; } a;
+ * integer { size = 8; align = 16; } b[0];
+ * integer { size = 8; } c;
+ * };
+ *
+ * When using this to decode the bytes 1, 2, and 3, then
+ * the decoded values are:
+ *
+ * `a`: 1
+ * `b`: []
+ * `c`: 3
+ *
+ * [1]: https://diamon.org/ctf/#spec4.2.3
+ */
+ array_fc->base.alignment = array_fc->elem_fc->alignment;
+ break;
+ }
+ default:
+ break;
+ }
end:
- return ret;
+ return ret;
}
BT_HIDDEN
-int ctf_trace_class_update_alignments(
- struct ctf_trace_class *ctf_tc)
+int ctf_trace_class_update_alignments(struct ctf_trace_class *ctf_tc)
{
- int ret = 0;
- uint64_t i;
-
- if (!ctf_tc->is_translated) {
- ret = set_alignments(ctf_tc->packet_header_fc);
- if (ret) {
- goto end;
- }
- }
-
- for (i = 0; i < ctf_tc->stream_classes->len; i++) {
- ctf_stream_class *sc = (ctf_stream_class *) ctf_tc->stream_classes->pdata[i];
- uint64_t j;
-
- if (!sc->is_translated) {
- ret = set_alignments(sc->packet_context_fc);
- if (ret) {
- goto end;
- }
-
- ret = set_alignments(sc->event_header_fc);
- if (ret) {
- goto end;
- }
-
- ret = set_alignments(sc->event_common_context_fc);
- if (ret) {
- goto end;
- }
- }
-
- for (j = 0; j < sc->event_classes->len; j++) {
- struct ctf_event_class *ec =
- (ctf_event_class *) sc->event_classes->pdata[j];
-
- if (ec->is_translated) {
- continue;
- }
-
- ret = set_alignments(ec->spec_context_fc);
- if (ret) {
- goto end;
- }
-
- ret = set_alignments(ec->payload_fc);
- if (ret) {
- goto end;
- }
- }
- }
+ int ret = 0;
+ uint64_t i;
+
+ if (!ctf_tc->is_translated) {
+ ret = set_alignments(ctf_tc->packet_header_fc);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ for (i = 0; i < ctf_tc->stream_classes->len; i++) {
+ ctf_stream_class *sc = (ctf_stream_class *) ctf_tc->stream_classes->pdata[i];
+ uint64_t j;
+
+ if (!sc->is_translated) {
+ ret = set_alignments(sc->packet_context_fc);
+ if (ret) {
+ goto end;
+ }
+
+ ret = set_alignments(sc->event_header_fc);
+ if (ret) {
+ goto end;
+ }
+
+ ret = set_alignments(sc->event_common_context_fc);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ for (j = 0; j < sc->event_classes->len; j++) {
+ struct ctf_event_class *ec = (ctf_event_class *) sc->event_classes->pdata[j];
+
+ if (ec->is_translated) {
+ continue;
+ }
+
+ ret = set_alignments(ec->spec_context_fc);
+ if (ret) {
+ goto end;
+ }
+
+ ret = set_alignments(ec->payload_fc);
+ if (ret) {
+ goto end;
+ }
+ }
+ }
end:
- return ret;
+ return ret;
}
projects / babeltrace.git / blobdiff