STATE_SKIP_PACKET_PADDING,
};
+struct trace_field_path_cache {
+ /*
+ * Indexes of the stream_id and stream_instance_id field in the packet
+ * header structure, -1 if unset.
+ */
+ int stream_id;
+ int stream_instance_id;
+};
+
+struct stream_class_field_path_cache {
+ /*
+ * Indexes of the v and id fields in the stream event header structure,
+ * -1 if unset.
+ */
+ int v;
+ int id;
+
+ /*
+ * index of the timestamp_end, packet_size and content_size fields in
+ * the stream packet context structure. Set to -1 if the fields were
+ * not found.
+ */
+ int timestamp_end;
+ int packet_size;
+ int content_size;
+};
+
+struct field_cb_override {
+ enum bt_ctf_btr_status (* func)(void *value,
+ struct bt_ctf_field_type *type, void *data);
+ void *data;
+};
+
/* CTF notification iterator */
struct bt_ctf_notif_iter {
/* Visit stack */
/* Current packet (NULL if not created yet) */
struct bt_ctf_packet *packet;
+ /*
+ * Current timestamp_end field (to consider before switching packets).
+ */
+ struct bt_ctf_field *cur_timestamp_end;
+
/* Database of current dynamic scopes (owned by this) */
struct {
struct bt_ctf_field *trace_packet_header;
struct bt_ctf_field *event_payload;
} dscopes;
+ /*
+ * Special field overrides.
+ *
+ * Overrides are used to implement the behaviours of special fields such
+ * as "timestamp_end" (which must be ignored until the end of the
+ * packet), "id" (event id) which can be present multiple times and must
+ * be updated multiple time.
+ *
+ * This should be used to implement the behaviour of integer fields
+ * mapped to clocks and other "tagged" fields (in CTF 2).
+ *
+ * bt_ctf_field_type to struct field_cb_override
+ */
+ GHashTable *field_overrides;
+
/* Current state */
enum state state;
/* bt_ctf_clock to uint64_t. */
GHashTable *clock_states;
+
+ /*
+ * Cache of the trace-constant field paths (event header type)
+ * associated to the current trace.
+ */
+ struct trace_field_path_cache trace_field_path_cache;
+
+ /*
+ * Field path cache associated with the current stream class.
+ * Ownership of this structure belongs to the field_path_caches HT.
+ */
+ struct stream_class_field_path_cache *cur_sc_field_path_cache;
+
+ /* bt_ctf_stream_class to struct stream_class_field_path_cache. */
+ GHashTable *sc_field_path_caches;
};
static
int bt_ctf_notif_iter_switch_packet(struct bt_ctf_notif_iter *notit);
+static
+enum bt_ctf_btr_status btr_timestamp_end_cb(void *value,
+ struct bt_ctf_field_type *type, void *data);
+
static
void stack_entry_free_func(gpointer data)
{
BT_CTF_TYPE_ID_VARIANT;
}
+static
+struct stream_class_field_path_cache *
+create_stream_class_field_path_cache_entry(
+ struct bt_ctf_notif_iter *notit,
+ struct bt_ctf_stream_class *stream_class)
+{
+ int v = -1;
+ int id = -1;
+ int timestamp_end = -1;
+ int packet_size = -1;
+ int content_size = -1;
+ struct stream_class_field_path_cache *cache_entry = g_new0(
+ struct stream_class_field_path_cache, 1);
+ struct bt_ctf_field_type *event_header = NULL, *packet_context = NULL;
+
+ if (!cache_entry) {
+ goto end;
+ }
+
+ event_header = bt_ctf_stream_class_get_event_header_type(stream_class);
+ if (event_header && bt_ctf_field_type_is_structure(event_header)) {
+ int i, count;
+
+ count = bt_ctf_field_type_structure_get_field_count(
+ event_header);
+ if (count < 0) {
+ goto error;
+ }
+ for (i = 0; i < count; i++) {
+ int ret;
+ const char *name;
+
+ ret = bt_ctf_field_type_structure_get_field(
+ event_header, &name, NULL, i);
+ if (ret) {
+ goto error;
+ }
+
+ if (v != -1 && id != -1) {
+ break;
+ }
+ if (v == -1 && !strcmp(name, "v")) {
+ v = i;
+ } else if (id == -1 && !strcmp(name, "id")) {
+ id = i;
+ }
+ }
+ }
+
+ packet_context = bt_ctf_stream_class_get_packet_context_type(
+ stream_class);
+ if (packet_context && bt_ctf_field_type_is_structure(packet_context)) {
+ int i, count;
+
+ count = bt_ctf_field_type_structure_get_field_count(
+ packet_context);
+ if (count < 0) {
+ goto error;
+ }
+ for (i = 0; i < count; i++) {
+ int ret;
+ const char *name;
+ struct bt_ctf_field_type *field_type;
+
+ if (timestamp_end != -1 && packet_size != -1 &&
+ content_size != -1) {
+ break;
+ }
+
+ ret = bt_ctf_field_type_structure_get_field(
+ packet_context, &name, &field_type, i);
+ if (ret) {
+ goto error;
+ }
+
+ if (timestamp_end == -1 &&
+ !strcmp(name, "timestamp_end")) {
+ struct field_cb_override *override = g_new0(
+ struct field_cb_override, 1);
+
+ if (!override) {
+ BT_PUT(field_type);
+ goto error;
+ }
+
+ override->func = btr_timestamp_end_cb;
+ override->data = notit;
+
+ g_hash_table_insert(notit->field_overrides,
+ bt_get(field_type), override);
+
+ timestamp_end = i;
+ } else if (packet_size == -1 &&
+ !strcmp(name, "packet_size")) {
+ packet_size = i;
+ } else if (content_size == -1 &&
+ !strcmp(name, "content_size")) {
+ content_size = i;
+ }
+ BT_PUT(field_type);
+ }
+ }
+
+ cache_entry->v = v;
+ cache_entry->id = id;
+ cache_entry->timestamp_end = timestamp_end;
+ cache_entry->packet_size = packet_size;
+ cache_entry->content_size = content_size;
+end:
+ BT_PUT(event_header);
+ BT_PUT(packet_context);
+ return cache_entry;
+error:
+ g_free(cache_entry);
+ cache_entry = NULL;
+ goto end;
+}
+
+static
+struct stream_class_field_path_cache *get_stream_class_field_path_cache(
+ struct bt_ctf_notif_iter *notit,
+ struct bt_ctf_stream_class *stream_class)
+{
+ bool cache_entry_found;
+ struct stream_class_field_path_cache *cache_entry;
+
+ cache_entry_found = g_hash_table_lookup_extended(
+ notit->sc_field_path_caches,
+ stream_class, NULL, (gpointer) &cache_entry);
+ if (unlikely(!cache_entry_found)) {
+ cache_entry = create_stream_class_field_path_cache_entry(notit,
+ stream_class);
+ g_hash_table_insert(notit->sc_field_path_caches,
+ bt_get(stream_class), (gpointer) cache_entry);
+ }
+
+ return cache_entry;
+}
+
static inline
enum bt_ctf_notif_iter_status set_current_stream_class(
struct bt_ctf_notif_iter *notit)
{
enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK;
- struct bt_ctf_field_type *packet_header_type;
+ struct bt_ctf_field_type *packet_header_type = NULL;
struct bt_ctf_field_type *stream_id_field_type = NULL;
uint64_t stream_id;
+ /* Clear the current stream class field path cache. */
+ notit->cur_sc_field_path_cache = NULL;
+
/* Is there any "stream_id" field in the packet header? */
packet_header_type = bt_ctf_trace_get_packet_header_type(
notit->meta.trace);
packet_header_type, "stream_id");
if (stream_id_field_type) {
/* Find appropriate stream class using current stream ID */
- struct bt_ctf_field *stream_id_field = NULL;
int ret;
+ struct bt_ctf_field *stream_id_field = NULL;
assert(notit->dscopes.trace_packet_header);
goto end;
}
+ /*
+ * Retrieve (or lazily create) the current stream class field path
+ * cache.
+ */
+ notit->cur_sc_field_path_cache = get_stream_class_field_path_cache(
+ notit, notit->meta.stream_class);
+ if (!notit->cur_sc_field_path_cache) {
+ PERR("Failed to retrieve stream class field path cache\n");
+ status = BT_CTF_NOTIF_ITER_STATUS_ERROR;
+ goto end;
+ }
end:
BT_PUT(packet_header_type);
BT_PUT(stream_id_field_type);
return status;
}
-
/**
* Resets the internal state of a CTF notification iterator.
- *
- * This function can be used when it is desired to seek to the beginning
- * of another packet. It is expected that the next call to
- * bt_ctf_notif_iter_medium_ops::request_bytes() made by this
- * notification iterator will return the \em first bytes of a \em
- * packet.
- *
- * @param notif_iter CTF notification iterator
*/
static
void bt_ctf_notif_iter_reset(struct bt_ctf_notif_iter *notit)
BT_PUT(notit->meta.stream_class);
BT_PUT(notit->meta.event_class);
BT_PUT(notit->packet);
+ BT_PUT(notit->cur_timestamp_end);
put_all_dscopes(notit);
/*
notit->cur_content_size = -1;
notit->cur_packet_size = -1;
+ notit->cur_sc_field_path_cache = NULL;
end:
return ret;
}
break;
}
- if (!next_field) {
- next_field = NULL;
- }
-
end:
BT_PUT(base_type);
}
static
-enum bt_ctf_btr_status btr_signed_int_cb(int64_t value,
- struct bt_ctf_field_type *type, void *data)
+enum bt_ctf_btr_status btr_unsigned_int_common(uint64_t value,
+ struct bt_ctf_field_type *type, void *data,
+ struct bt_ctf_field **_field)
{
enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK;
struct bt_ctf_field *field = NULL;
struct bt_ctf_notif_iter *notit = data;
int ret;
- /* create next field */
+ /* Create next field */
field = get_next_field(notit);
if (!field) {
- PERR("Failed to get next field (signed int)\n");
+ PERR("Failed to get next field (unsigned int)\n");
status = BT_CTF_BTR_STATUS_ERROR;
goto end_no_put;
}
goto end;
}
- ret = bt_ctf_field_signed_integer_set_value(int_field, value);
+ ret = bt_ctf_field_unsigned_integer_set_value(int_field, value);
assert(!ret);
stack_top(notit->stack)->index++;
- status = update_clock(notit, type, int_field);
+ *_field = int_field;
+
end:
BT_PUT(field);
- BT_PUT(int_field);
BT_PUT(type);
end_no_put:
return status;
}
+static
+enum bt_ctf_btr_status btr_timestamp_end_cb(void *value,
+ struct bt_ctf_field_type *type, void *data)
+{
+ enum bt_ctf_btr_status status;
+ struct bt_ctf_field *field = NULL;
+ struct bt_ctf_notif_iter *notit = data;
+
+ status = btr_unsigned_int_common(*((uint64_t *) value), type, data,
+ &field);
+
+ /* Set as the current packet's timestamp_end field. */
+ BT_MOVE(notit->cur_timestamp_end, field);
+ return status;
+}
+
static
enum bt_ctf_btr_status btr_unsigned_int_cb(uint64_t value,
struct bt_ctf_field_type *type, void *data)
+{
+ struct bt_ctf_notif_iter *notit = data;
+ enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK;
+ struct bt_ctf_field *field = NULL;
+ struct field_cb_override *override;
+
+ override = g_hash_table_lookup(notit->field_overrides,
+ type);
+ if (unlikely(override)) {
+ status = override->func(&value, type, override->data);
+ goto end;
+ }
+
+ status = btr_unsigned_int_common(value, type, data, &field);
+ if (status != BT_CTF_BTR_STATUS_OK) {
+ goto end;
+ }
+
+ status = update_clock(notit, type, field);
+ BT_PUT(field);
+end:
+ return status;
+}
+
+static
+enum bt_ctf_btr_status btr_signed_int_cb(int64_t value,
+ struct bt_ctf_field_type *type, void *data)
{
enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK;
struct bt_ctf_field *field = NULL;
struct bt_ctf_notif_iter *notit = data;
int ret;
- /* Create next field */
+ /* create next field */
field = get_next_field(notit);
if (!field) {
- PERR("Failed to get next field (unsigned int)\n");
+ PERR("Failed to get next field (signed int)\n");
status = BT_CTF_BTR_STATUS_ERROR;
goto end_no_put;
}
goto end;
}
- ret = bt_ctf_field_unsigned_integer_set_value(int_field, value);
+ ret = bt_ctf_field_signed_integer_set_value(int_field, value);
assert(!ret);
stack_top(notit->stack)->index++;
status = update_clock(notit, type, int_field);
return ret;
}
+static
+void init_trace_field_path_cache(struct bt_ctf_trace *trace,
+ struct trace_field_path_cache *trace_field_path_cache)
+{
+ int stream_id = -1;
+ int stream_instance_id = -1;
+ int i, count;
+ struct bt_ctf_field_type *packet_header = NULL;
+
+ packet_header = bt_ctf_trace_get_packet_header_type(trace);
+ if (!packet_header) {
+ goto end;
+ }
+
+ if (!bt_ctf_field_type_is_structure(packet_header)) {
+ goto end;
+ }
+
+ count = bt_ctf_field_type_structure_get_field_count(packet_header);
+ if (count < 0) {
+ goto end;
+ }
+
+ for (i = 0; (i < count && (stream_id == -1 || stream_instance_id == -1)); i++) {
+ int ret;
+ const char *field_name;
+
+ ret = bt_ctf_field_type_structure_get_field(packet_header,
+ &field_name, NULL, i);
+ if (ret) {
+ goto end;
+ }
+
+ if (stream_id == -1 && !strcmp(field_name, "stream_id")) {
+ stream_id = i;
+ } else if (stream_instance_id == -1 &&
+ !strcmp(field_name, "stream_instance_id")) {
+ stream_instance_id = i;
+ }
+ }
+end:
+ trace_field_path_cache->stream_id = stream_id;
+ trace_field_path_cache->stream_instance_id = stream_instance_id;
+ BT_PUT(packet_header);
+}
+
BT_HIDDEN
struct bt_ctf_notif_iter *bt_ctf_notif_iter_create(struct bt_ctf_trace *trace,
size_t max_request_sz,
bt_ctf_notif_iter_reset(notit);
+ init_trace_field_path_cache(trace, ¬it->trace_field_path_cache);
+ notit->sc_field_path_caches = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, bt_put, g_free);
+ if (!notit->sc_field_path_caches) {
+ PERR("Failed to create stream class field path caches\n");
+ goto error;
+ }
+
+ notit->field_overrides = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, bt_put, g_free);
+ if (!notit->field_overrides) {
+ goto error;
+ }
+
end:
return notit;
error:
BT_PUT(notit->meta.stream_class);
BT_PUT(notit->meta.event_class);
BT_PUT(notit->packet);
+ BT_PUT(notit->cur_timestamp_end);
put_all_dscopes(notit);
if (notit->stack) {
if (notit->clock_states) {
g_hash_table_destroy(notit->clock_states);
}
+
+ if (notit->sc_field_path_caches) {
+ g_hash_table_destroy(notit->sc_field_path_caches);
+ }
+
+ if (notit->field_overrides) {
+ g_hash_table_destroy(notit->field_overrides);
+ }
g_free(notit);
}
}
goto end;
case STATE_EMIT_NOTIF_END_OF_PACKET:
+ /* Update clock with timestamp_end field. */
+ if (notit->cur_timestamp_end) {
+ enum bt_ctf_btr_status btr_status;
+ struct bt_ctf_field_type *field_type =
+ bt_ctf_field_get_type(
+ notit->cur_timestamp_end);
+
+ btr_status = update_clock(notit, field_type,
+ notit->cur_timestamp_end);
+ BT_PUT(field_type);
+ if (btr_status != BT_CTF_BTR_STATUS_OK) {
+ status = BT_CTF_NOTIF_ITER_STATUS_ERROR;
+ goto end;
+ }
+ }
+
PDBG("Emitting end of packet notification\n");
notify_end_of_packet(notit, notification);
if (!*notification) {
projects / babeltrace.git / commitdiff
