int bt_ctf_event_class_add_field(struct bt_ctf_event_class *event_class,
struct bt_ctf_field_type *type,
const char *name)
{
int ret = 0;
if (!event_class || !type) {
BT_LOGW("Invalid parameter: event class or field type is NULL: "
"event-class-addr=%p, field-type-addr=%p",
event_class, type);
ret = -1;
goto end;
}
if (!bt_ctf_identifier_is_valid(name)) {
BT_LOGW("Invalid parameter: event class's payload field type's field name is not a valid CTF identifier: "
"addr=%p, name=\"%s\", id=%" PRId64 ", field-name=\"%s\"",
event_class, bt_ctf_event_class_get_name(event_class),
bt_ctf_event_class_get_id(event_class),
name);
ret = -1;
goto end;
}
if (event_class->common.frozen) {
BT_LOGW("Invalid parameter: event class is frozen: "
"addr=%p, name=\"%s\", id=%" PRId64,
event_class, bt_ctf_event_class_get_name(event_class),
bt_ctf_event_class_get_id(event_class));
ret = -1;
goto end;
}
if (!event_class->common.payload_field_type) {
BT_LOGW("Event class has no payload field type: "
"addr=%p, name=\"%s\", id=%" PRId64,
event_class, bt_ctf_event_class_get_name(event_class),
bt_ctf_event_class_get_id(event_class));
ret = -1;
goto end;
}
BT_ASSERT(bt_ctf_field_type_common_get_type_id(
event_class->common.payload_field_type) ==
BT_CTF_FIELD_TYPE_ID_STRUCT);
ret = bt_ctf_field_type_structure_add_field(
(void *) event_class->common.payload_field_type,
(void *) type, name);
BT_LOGV("Added field to event class's payload field type: "
"event-class-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", field-name=\"%s\", ft-addr=%p",
event_class, bt_ctf_event_class_get_name(event_class),
bt_ctf_event_class_get_id(event_class), name, type);
end:
return ret;
}
BT_HIDDEN
int bt_ctf_event_class_common_validate_single_clock_class(
struct bt_ctf_event_class_common *event_class,
struct bt_ctf_clock_class **expected_clock_class)
{
int ret = 0;
BT_ASSERT(event_class);
BT_ASSERT(expected_clock_class);
ret = bt_ctf_field_type_common_validate_single_clock_class(
event_class->context_field_type,
expected_clock_class);
if (ret) {
BT_LOGW("Event class's context field type "
"is not recursively mapped to the "
"expected clock class: "
"event-class-addr=%p, "
"event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", "
"ft-addr=%p",
event_class,
bt_ctf_event_class_common_get_name(event_class),
event_class->id,
event_class->context_field_type);
goto end;
}
ret = bt_ctf_field_type_common_validate_single_clock_class(
event_class->payload_field_type,
expected_clock_class);
if (ret) {
BT_LOGW("Event class's payload field type "
"is not recursively mapped to the "
"expected clock class: "
"event-class-addr=%p, "
"event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", "
"ft-addr=%p",
event_class,
bt_ctf_event_class_common_get_name(event_class),
event_class->id,
event_class->payload_field_type);
goto end;
}
end:
return ret;
}
BT_HIDDEN
struct bt_value *bt_attributes_get_field_value_by_name(
struct bt_value *attr_obj, const char *name)
{
struct bt_value *value_obj = NULL;
struct bt_value *attr_field_obj = NULL;
if (!attr_obj || !name) {
BT_LOGW("Invalid parameter: attributes object or name is NULL: "
"value-addr=%p, name-addr=%p", attr_obj, name);
goto end;
}
attr_field_obj = bt_attributes_get_field_by_name(attr_obj, name);
if (!attr_field_obj) {
BT_LOGD("Cannot find attributes object's field by name: "
"value-addr=%p, name=\"%s\"", attr_obj, name);
goto end;
}
value_obj = bt_value_array_get(attr_field_obj,
BT_ATTR_VALUE_INDEX);
if (!value_obj) {
BT_LOGE("Cannot get attribute array value's element by index: "
"value-addr=%p, index=%" PRIu64, attr_field_obj,
(uint64_t) BT_ATTR_VALUE_INDEX);
}
end:
BT_PUT(attr_field_obj);
return value_obj;
}
static inline
int64_t get_compound_field_type_length(struct bt_btr *btr,
struct bt_field_type *field_type)
{
int64_t length;
switch (bt_field_type_get_type_id(field_type)) {
case BT_FIELD_TYPE_ID_STRUCT:
length = (int64_t) bt_field_type_structure_get_field_count(
field_type);
break;
case BT_FIELD_TYPE_ID_VARIANT:
/* Variant field types always "contain" a single type */
length = 1;
break;
case BT_FIELD_TYPE_ID_ARRAY:
length = bt_field_type_array_get_length(field_type);
break;
case BT_FIELD_TYPE_ID_SEQUENCE:
length = btr->user.cbs.query.get_sequence_length(field_type,
btr->user.data);
break;
default:
BT_LOGW("Cannot get field type's field count: btr-addr=%p, "
"ft-addr=%p, ft-id=%s",
btr, field_type,
bt_field_type_id_string(
bt_field_type_get_type_id(field_type)));
length = BT_BTR_STATUS_ERROR;
}
return length;
}
struct bt_clock_value *bt_event_get_clock_value(
struct bt_event *event, struct bt_clock_class *clock_class)
{
struct bt_clock_value *clock_value = NULL;
if (!event || !clock_class) {
BT_LOGW("Invalid parameter: event or clock class is NULL: "
"event-addr=%p, clock-class-addr=%p",
event, clock_class);
goto end;
}
clock_value = g_hash_table_lookup(event->clock_values, clock_class);
if (!clock_value) {
BT_LOGV("No clock value associated to the given clock class: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", clock-class-addr=%p, "
"clock-class-name=\"%s\"", event,
bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
clock_class, bt_clock_class_get_name(clock_class));
goto end;
}
bt_get(clock_value);
end:
return clock_value;
}
BT_HIDDEN
int bt_event_serialize(struct bt_event *event,
struct bt_stream_pos *pos,
enum bt_byte_order native_byte_order)
{
int ret = 0;
assert(event);
assert(pos);
BT_LOGV_STR("Serializing event's context field.");
if (event->context_payload) {
ret = bt_field_serialize(event->context_payload, pos,
native_byte_order);
if (ret) {
BT_LOGW("Cannot serialize event's context field: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64,
event,
bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
goto end;
}
}
BT_LOGV_STR("Serializing event's payload field.");
if (event->fields_payload) {
ret = bt_field_serialize(event->fields_payload, pos,
native_byte_order);
if (ret) {
BT_LOGW("Cannot serialize event's payload field: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64,
event,
bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
goto end;
}
}
end:
return ret;
}
BT_HIDDEN
void bt_ctf_clock_class_serialize(struct bt_ctf_clock_class *clock_class,
struct metadata_context *context)
{
unsigned char *uuid;
BT_LOGD("Serializing clock class's metadata: clock-class-addr=%p, "
"name=\"%s\", metadata-context-addr=%p", clock_class,
bt_ctf_clock_class_get_name(clock_class),
context);
if (!clock_class || !context) {
BT_LOGW("Invalid parameter: clock class or metadata context is NULL: "
"clock-class-addr=%p, name=\"%s\", metadata-context-addr=%p",
clock_class,
bt_ctf_clock_class_get_name(clock_class),
context);
return;
}
uuid = clock_class->uuid;
g_string_append(context->string, "clock {\n");
g_string_append_printf(context->string, "\tname = %s;\n",
clock_class->name->str);
if (clock_class->uuid_set) {
g_string_append_printf(context->string,
"\tuuid = \"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\";\n",
uuid[0], uuid[1], uuid[2], uuid[3],
uuid[4], uuid[5], uuid[6], uuid[7],
uuid[8], uuid[9], uuid[10], uuid[11],
uuid[12], uuid[13], uuid[14], uuid[15]);
}
if (clock_class->description) {
g_string_append_printf(context->string, "\tdescription = \"%s\";\n",
clock_class->description->str);
}
g_string_append_printf(context->string, "\tfreq = %" PRIu64 ";\n",
clock_class->frequency);
g_string_append_printf(context->string, "\tprecision = %" PRIu64 ";\n",
clock_class->precision);
g_string_append_printf(context->string, "\toffset_s = %" PRIu64 ";\n",
clock_class->offset_s);
g_string_append_printf(context->string, "\toffset = %" PRIu64 ";\n",
clock_class->offset);
g_string_append_printf(context->string, "\tabsolute = %s;\n",
clock_class->absolute ? "true" : "false");
g_string_append(context->string, "};\n\n");
}
BT_HIDDEN
int bt_attributes_set_field_value(struct bt_value *attr_obj,
const char *name, struct bt_value *value_obj)
{
int ret = 0;
struct bt_value *attr_field_obj = NULL;
if (!attr_obj || !name || !value_obj) {
BT_LOGW("Invalid parameter: attributes object, name, or value object is NULL: "
"attr-value-addr=%p, name-addr=%p, value-addr=%p",
attr_obj, name, value_obj);
ret = -1;
goto end;
}
attr_field_obj = bt_attributes_get_field_by_name(attr_obj, name);
if (attr_field_obj) {
ret = bt_value_array_set(attr_field_obj,
BT_ATTR_VALUE_INDEX, value_obj);
goto end;
}
attr_field_obj = bt_value_array_create();
if (!attr_field_obj) {
BT_LOGE_STR("Failed to create empty array value.");
ret = -1;
goto end;
}
ret = bt_value_array_append_string(attr_field_obj, name);
ret |= bt_value_array_append(attr_field_obj, value_obj);
if (ret) {
BT_LOGE("Cannot append elements to array value: addr=%p",
attr_field_obj);
goto end;
}
ret = bt_value_array_append(attr_obj, attr_field_obj);
if (ret) {
BT_LOGE("Cannot append element to array value: "
"array-value-addr=%p, element-value-addr=%p",
attr_obj, attr_field_obj);
}
end:
BT_PUT(attr_field_obj);
return ret;
}
static inline
enum bt_btr_status validate_contiguous_bo(struct bt_btr *btr,
enum bt_byte_order next_bo)
{
enum bt_btr_status status = BT_BTR_STATUS_OK;
/* Always valid when at a byte boundary */
if (packet_at(btr) % 8 == 0) {
goto end;
}
/* Always valid if last byte order is unknown */
if (btr->last_bo == BT_BYTE_ORDER_UNKNOWN) {
goto end;
}
/* Always valid if next byte order is unknown */
if (next_bo == BT_BYTE_ORDER_UNKNOWN) {
goto end;
}
/* Make sure last byte order is compatible with the next byte order */
switch (btr->last_bo) {
case BT_BYTE_ORDER_BIG_ENDIAN:
case BT_BYTE_ORDER_NETWORK:
if (next_bo != BT_BYTE_ORDER_BIG_ENDIAN &&
next_bo != BT_BYTE_ORDER_NETWORK) {
status = BT_BTR_STATUS_ERROR;
}
break;
case BT_BYTE_ORDER_LITTLE_ENDIAN:
if (next_bo != BT_BYTE_ORDER_LITTLE_ENDIAN) {
status = BT_BTR_STATUS_ERROR;
}
break;
default:
status = BT_BTR_STATUS_ERROR;
}
end:
if (status < 0) {
BT_LOGW("Cannot read bit array: two different byte orders not at a byte boundary: "
"btr-addr=%p, last-bo=%s, next-bo=%s",
btr, bt_byte_order_string(btr->last_bo),
bt_byte_order_string(next_bo));
}
return status;
}
struct bt_ctf_field_type *
bt_ctf_event_class_get_payload_type_field_type_by_name(
struct bt_ctf_event_class *event_class, const char *name)
{
GQuark name_quark;
struct bt_ctf_field_type *field_type = NULL;
if (!event_class || !name) {
BT_LOGW("Invalid parameter: event class or name is NULL: "
"event-class-addr=%p, name-addr=%p",
event_class, name);
goto end;
}
if (!event_class->common.payload_field_type) {
BT_LOGV("Event class has no payload field type: "
"addr=%p, name=\"%s\", id=%" PRId64,
event_class, bt_ctf_event_class_get_name(event_class),
bt_ctf_event_class_get_id(event_class));
goto end;
}
BT_ASSERT(bt_ctf_field_type_common_get_type_id(
event_class->common.payload_field_type) ==
BT_CTF_FIELD_TYPE_ID_STRUCT);
name_quark = g_quark_try_string(name);
if (!name_quark) {
BT_LOGE("Cannot get GQuark: string=\"%s\"", name);
goto end;
}
/*
* No need to increment field_type's reference count since getting it
* from the structure already does.
*/
field_type = (void *)
bt_ctf_field_type_structure_get_field_type_by_name(
(void *) event_class->common.payload_field_type, name);
end:
return field_type;
}
static
int stack_push_with_len(struct bt_btr *btr,
struct bt_field_type *base_type)
{
int ret = 0;
int64_t base_len = get_compound_field_type_length(btr, base_type);
if (base_len < 0) {
BT_LOGW("Cannot get compound field type's field count: "
"btr-addr=%p, ft-addr=%p, ft-id=%s",
btr, base_type, bt_field_type_id_string(
bt_field_type_get_type_id(base_type)));
ret = BT_BTR_STATUS_ERROR;
goto end;
}
ret = stack_push(btr->stack, base_type, (size_t) base_len);
end:
return ret;
}
void bt_put(void *ptr)
{
struct bt_object *obj = ptr;
if (unlikely(!obj)) {
return;
}
if (unlikely(!obj->ref_count.release)) {
return;
}
if (BT_LOG_ON_WARN && unlikely(bt_object_get_ref_count(obj) == 0)) {
BT_LOGW("Decrementing a reference count set to 0: addr=%p",
ptr);
}
BT_LOGV("Decrementing object's reference count: %lu -> %lu: "
"addr=%p, cur-count=%lu, new-count=%lu",
obj->ref_count.count, obj->ref_count.count - 1,
ptr,
obj->ref_count.count, obj->ref_count.count - 1);
bt_ref_put(&obj->ref_count);
}
int bt_event_set_clock_value(struct bt_event *event,
struct bt_clock_value *value)
{
int ret = 0;
struct bt_trace *trace;
struct bt_stream_class *stream_class;
struct bt_event_class *event_class;
struct bt_clock_class *clock_class = NULL;
if (!event || !value) {
BT_LOGW("Invalid parameter: event or clock value is NULL: "
"event-addr=%p, clock-value-addr=%p",
event, value);
ret = -1;
goto end;
}
if (event->frozen) {
BT_LOGW("Invalid parameter: event is frozen: addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64,
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
ret = -1;
goto end;
}
clock_class = bt_clock_value_get_class(value);
event_class = bt_event_borrow_event_class(event);
assert(event_class);
stream_class = bt_event_class_borrow_stream_class(event_class);
assert(stream_class);
trace = bt_stream_class_borrow_trace(stream_class);
assert(trace);
if (!bt_trace_has_clock_class(trace, clock_class)) {
BT_LOGW("Invalid parameter: clock class is not part of event's trace: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", clock-class-addr=%p, "
"clock-class-name=\"%s\"",
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
clock_class, bt_clock_class_get_name(clock_class));
ret = -1;
goto end;
}
g_hash_table_insert(event->clock_values, clock_class, bt_get(value));
BT_LOGV("Set event's clock value: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", clock-class-addr=%p, "
"clock-class-name=\"%s\", clock-value-addr=%p, "
"clock-value-cycles=%" PRIu64,
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
clock_class, bt_clock_class_get_name(clock_class),
value, value->value);
clock_class = NULL;
end:
bt_put(clock_class);
return ret;
}
int bt_event_set_stream_event_context(struct bt_event *event,
struct bt_field *stream_event_context)
{
int ret = 0;
struct bt_field_type *field_type = NULL;
struct bt_stream_class *stream_class = NULL;
if (!event) {
BT_LOGW_STR("Invalid parameter: event is NULL.");
ret = -1;
goto end;
}
if (event->frozen) {
BT_LOGW("Invalid parameter: event is frozen: addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64,
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
ret = -1;
goto end;
}
stream_class = bt_event_class_get_stream_class(event->event_class);
/*
* We should not have been able to create the event without associating
* the event class to a stream class.
*/
assert(stream_class);
if (stream_event_context) {
field_type = bt_field_get_type(stream_event_context);
if (bt_field_type_compare(field_type,
stream_class->event_context_type)) {
BT_LOGW("Invalid parameter: stream event context field type is different from the expected field type: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64,
event,
bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
ret = -1;
goto end;
}
} else {
if (stream_class->event_context_type) {
BT_LOGW("Invalid parameter: setting no stream event context but stream event context field type is not NULL: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", "
"stream-event-context-ft-addr=%p",
event,
bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
stream_class->event_context_type);
ret = -1;
goto end;
}
}
bt_get(stream_event_context);
BT_MOVE(event->stream_event_context, stream_event_context);
BT_LOGV("Set event's stream event context field: event-addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64 ", "
"stream-event-context-field-addr=%p",
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
stream_event_context);
end:
BT_PUT(stream_class);
bt_put(field_type);
return ret;
}
size_t bt_btr_start(struct bt_btr *btr,
struct bt_field_type *type, const uint8_t *buf,
size_t offset, size_t packet_offset, size_t sz,
enum bt_btr_status *status)
{
assert(btr);
assert(BYTES_TO_BITS(sz) >= offset);
reset(btr);
btr->buf.addr = buf;
btr->buf.offset = offset;
btr->buf.at = 0;
btr->buf.packet_offset = packet_offset;
btr->buf.buf_sz = sz;
btr->buf.sz = BYTES_TO_BITS(sz) - offset;
*status = BT_BTR_STATUS_OK;
BT_LOGV("Starting decoding: btr-addr=%p, ft-addr=%p, "
"buf-addr=%p, buf-size=%zu, offset=%zu, "
"packet-offset=%zu",
btr, type, buf, sz, offset, packet_offset);
/* Set root type */
if (is_compound_type(type)) {
/* Compound type: push on visit stack */
int stack_ret;
if (btr->user.cbs.types.compound_begin) {
BT_LOGV("Calling user function (compound, begin).");
*status = btr->user.cbs.types.compound_begin(
type, btr->user.data);
BT_LOGV("User function returned: status=%s",
bt_btr_status_string(*status));
if (*status != BT_BTR_STATUS_OK) {
BT_LOGW("User function failed: btr-addr=%p, status=%s",
btr, bt_btr_status_string(*status));
goto end;
}
}
stack_ret = stack_push_with_len(btr, type);
if (stack_ret) {
/* stack_push_with_len() logs errors */
*status = BT_BTR_STATUS_ERROR;
goto end;
}
btr->state = BTR_STATE_ALIGN_COMPOUND;
} else {
/* Basic type: set as current basic type */
btr->cur_basic_field_type = type;
bt_get(btr->cur_basic_field_type);
btr->state = BTR_STATE_ALIGN_BASIC;
}
/* Run the machine! */
BT_LOGV_STR("Running the state machine.");
while (true) {
*status = handle_state(btr);
if (*status != BT_BTR_STATUS_OK ||
btr->state == BTR_STATE_DONE) {
break;
}
}
/* Update packet offset for next time */
update_packet_offset(btr);
end:
return btr->buf.at;
}
int bt_event_set_event_context(struct bt_event *event,
struct bt_field *context)
{
int ret = 0;
struct bt_field_type *field_type = NULL;
if (!event) {
BT_LOGW_STR("Invalid parameter: event is NULL.");
ret = -1;
goto end;
}
if (event->frozen) {
BT_LOGW("Invalid parameter: event is frozen: addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64,
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
ret = -1;
goto end;
}
if (context) {
field_type = bt_field_get_type(context);
if (bt_field_type_compare(field_type,
event->event_class->context)) {
BT_LOGW("Invalid parameter: context field type is different from the expected field type: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64,
event,
bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
ret = -1;
goto end;
}
} else {
if (event->event_class->context) {
BT_LOGW("Invalid parameter: setting no event context but event context field type is not NULL: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", "
"event-context-ft-addr=%p",
event,
bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
event->event_class->context);
ret = -1;
goto end;
}
}
bt_put(event->context_payload);
event->context_payload = bt_get(context);
BT_LOGV("Set event's context field: event-addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64 ", "
"context-field-addr=%p",
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class), context);
end:
bt_put(field_type);
return ret;
}
struct bt_event *bt_event_create(struct bt_event_class *event_class)
{
int ret;
enum bt_validation_flag validation_flags =
BT_VALIDATION_FLAG_STREAM |
BT_VALIDATION_FLAG_EVENT;
struct bt_event *event = NULL;
struct bt_trace *trace = NULL;
struct bt_stream_class *stream_class = NULL;
struct bt_field_type *packet_header_type = NULL;
struct bt_field_type *packet_context_type = NULL;
struct bt_field_type *event_header_type = NULL;
struct bt_field_type *stream_event_ctx_type = NULL;
struct bt_field_type *event_context_type = NULL;
struct bt_field_type *event_payload_type = NULL;
struct bt_field *event_header = NULL;
struct bt_field *stream_event_context = NULL;
struct bt_field *event_context = NULL;
struct bt_field *event_payload = NULL;
struct bt_value *environment = NULL;
struct bt_validation_output validation_output = { 0 };
int trace_valid = 0;
BT_LOGD("Creating event object: event-class-addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64,
event_class, bt_event_class_get_name(event_class),
bt_event_class_get_id(event_class));
if (!event_class) {
BT_LOGW_STR("Invalid parameter: event class is NULL.");
goto error;
}
stream_class = bt_event_class_get_stream_class(event_class);
/*
* We disallow the creation of an event if its event class has not been
* associated to a stream class.
*/
if (!stream_class) {
BT_LOGW_STR("Event class is not part of a stream class.");
goto error;
}
/* The event class was frozen when added to its stream class */
assert(event_class->frozen);
/* Validate the trace (if any), the stream class, and the event class */
trace = bt_stream_class_get_trace(stream_class);
if (trace) {
BT_LOGD_STR("Event's class is part of a trace.");
packet_header_type = bt_trace_get_packet_header_type(trace);
trace_valid = trace->valid;
assert(trace_valid);
environment = trace->environment;
}
packet_context_type = bt_stream_class_get_packet_context_type(
stream_class);
event_header_type = bt_stream_class_get_event_header_type(
stream_class);
stream_event_ctx_type = bt_stream_class_get_event_context_type(
stream_class);
event_context_type = bt_event_class_get_context_type(event_class);
event_payload_type = bt_event_class_get_payload_type(event_class);
ret = bt_validate_class_types(environment, packet_header_type,
packet_context_type, event_header_type, stream_event_ctx_type,
event_context_type, event_payload_type, trace_valid,
stream_class->valid, event_class->valid,
&validation_output, validation_flags);
BT_PUT(packet_header_type);
BT_PUT(packet_context_type);
BT_PUT(event_header_type);
BT_PUT(stream_event_ctx_type);
BT_PUT(event_context_type);
BT_PUT(event_payload_type);
if (ret) {
/*
* This means something went wrong during the validation
* process, not that the objects are invalid.
*/
BT_LOGE("Failed to validate event and parents: ret=%d", ret);
goto error;
}
if ((validation_output.valid_flags & validation_flags) !=
validation_flags) {
/* Invalid trace/stream class/event class */
BT_LOGW("Invalid trace, stream class, or event class: "
"valid-flags=0x%x", validation_output.valid_flags);
goto error;
}
/*
* At this point we know the trace (if associated to the stream
* class), the stream class, and the event class, with their
* current types, are valid. We may proceed with creating
* the event.
*/
event = g_new0(struct bt_event, 1);
if (!event) {
BT_LOGE_STR("Failed to allocate one event.");
goto error;
}
bt_object_init(event, bt_event_destroy);
/*
* event does not share a common ancestor with the event class; it has
* to guarantee its existence by holding a reference. This reference
* shall be released once the event is associated to a stream since,
* from that point, the event and its class will share the same
* lifetime.
*/
event->event_class = bt_get(event_class);
event->clock_values = g_hash_table_new_full(g_direct_hash,
g_direct_equal, bt_put, bt_put);
if (validation_output.event_header_type) {
BT_LOGD("Creating initial event header field: ft-addr=%p",
validation_output.event_header_type);
event_header =
bt_field_create(validation_output.event_header_type);
if (!event_header) {
BT_LOGE_STR("Cannot create initial event header field object.");
goto error;
}
}
if (validation_output.stream_event_ctx_type) {
BT_LOGD("Creating initial stream event context field: ft-addr=%p",
validation_output.stream_event_ctx_type);
stream_event_context = bt_field_create(
validation_output.stream_event_ctx_type);
if (!stream_event_context) {
BT_LOGE_STR("Cannot create initial stream event context field object.");
goto error;
}
}
if (validation_output.event_context_type) {
BT_LOGD("Creating initial event context field: ft-addr=%p",
validation_output.event_context_type);
event_context = bt_field_create(
validation_output.event_context_type);
if (!event_context) {
BT_LOGE_STR("Cannot create initial event context field object.");
goto error;
}
}
if (validation_output.event_payload_type) {
BT_LOGD("Creating initial event payload field: ft-addr=%p",
validation_output.event_payload_type);
event_payload = bt_field_create(
validation_output.event_payload_type);
if (!event_payload) {
BT_LOGE_STR("Cannot create initial event payload field object.");
goto error;
}
}
/*
* At this point all the fields are created, potentially from
* validated copies of field types, so that the field types and
* fields can be replaced in the trace, stream class,
* event class, and created event.
*/
bt_validation_replace_types(trace, stream_class,
event_class, &validation_output, validation_flags);
BT_MOVE(event->event_header, event_header);
BT_MOVE(event->stream_event_context, stream_event_context);
BT_MOVE(event->context_payload, event_context);
BT_MOVE(event->fields_payload, event_payload);
/*
* Put what was not moved in bt_validation_replace_types().
*/
bt_validation_output_put_types(&validation_output);
/*
* Freeze the stream class since the event header must not be changed
* anymore.
*/
bt_stream_class_freeze(stream_class);
/*
* Mark stream class, and event class as valid since
* they're all frozen now.
*/
stream_class->valid = 1;
event_class->valid = 1;
/* Put stuff we borrowed from the event class */
BT_PUT(stream_class);
BT_PUT(trace);
BT_LOGD("Created event object: addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64,
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event_class));
return event;
error:
bt_validation_output_put_types(&validation_output);
BT_PUT(event);
BT_PUT(stream_class);
BT_PUT(trace);
BT_PUT(event_header);
BT_PUT(stream_event_context);
BT_PUT(event_context);
BT_PUT(event_payload);
assert(!packet_header_type);
assert(!packet_context_type);
assert(!event_header_type);
assert(!stream_event_ctx_type);
assert(!event_context_type);
assert(!event_payload_type);
return event;
}
int bt_event_set_payload(struct bt_event *event,
const char *name,
struct bt_field *payload)
{
int ret = 0;
if (!event || !payload) {
BT_LOGW("Invalid parameter: event or payload field is NULL: "
"event-addr=%p, payload-field-addr=%p",
event, payload);
ret = -1;
goto end;
}
if (event->frozen) {
BT_LOGW("Invalid parameter: event is frozen: addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64,
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
ret = -1;
goto end;
}
if (name) {
ret = bt_field_structure_set_field_by_name(
event->fields_payload, name, payload);
} else {
struct bt_field_type *payload_type;
payload_type = bt_field_get_type(payload);
if (bt_field_type_compare(payload_type,
event->event_class->fields) == 0) {
bt_put(event->fields_payload);
bt_get(payload);
event->fields_payload = payload;
} else {
BT_LOGW("Invalid parameter: payload field type is different from the expected field type: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64,
event,
bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
ret = -1;
}
bt_put(payload_type);
}
if (ret) {
BT_LOGW("Failed to set event's payload field: event-addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64 ", "
"payload-field-name=\"%s\", payload-field-addr=%p",
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
name, payload);
} else {
BT_LOGV("Set event's payload field: event-addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64 ", "
"payload-field-name=\"%s\", payload-field-addr=%p",
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
name, payload);
}
end:
return ret;
}
int bt_event_set_header(struct bt_event *event,
struct bt_field *header)
{
int ret = 0;
struct bt_field_type *field_type = NULL;
struct bt_stream_class *stream_class = NULL;
if (!event) {
BT_LOGW_STR("Invalid parameter: event is NULL.");
ret = -1;
goto end;
}
if (event->frozen) {
BT_LOGW("Invalid parameter: event is frozen: addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64,
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
ret = -1;
goto end;
}
stream_class = (struct bt_stream_class *) bt_object_get_parent(
event->event_class);
/*
* Ensure the provided header's type matches the one registered to the
* stream class.
*/
if (header) {
field_type = bt_field_get_type(header);
if (bt_field_type_compare(field_type,
stream_class->event_header_type)) {
BT_LOGW("Invalid parameter: header field type is different from the expected field type: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64,
event,
bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
ret = -1;
goto end;
}
} else {
if (stream_class->event_header_type) {
BT_LOGW("Invalid parameter: setting no event header but event header field type is not NULL: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", "
"event-header-ft-addr=%p",
event,
bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
stream_class->event_header_type);
ret = -1;
goto end;
}
}
bt_put(event->event_header);
event->event_header = bt_get(header);
BT_LOGV("Set event's header field: event-addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64 ", "
"header-field-addr=%p",
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class), header);
end:
bt_put(stream_class);
bt_put(field_type);
return ret;
}
static
struct bt_plugin *bt_plugin_from_python_plugin_info(PyObject *plugin_info)
{
struct bt_plugin *plugin = NULL;
PyObject *py_name = NULL;
PyObject *py_author = NULL;
PyObject *py_description = NULL;
PyObject *py_license = NULL;
PyObject *py_version = NULL;
PyObject *py_comp_class_addrs = NULL;
const char *name = NULL;
const char *author = NULL;
const char *description = NULL;
const char *license = NULL;
unsigned int major = 0, minor = 0, patch = 0;
const char *version_extra = NULL;
int ret;
assert(plugin_info);
assert(python_state == PYTHON_STATE_FULLY_INITIALIZED);
py_name = PyObject_GetAttrString(plugin_info, "name");
if (!py_name) {
BT_LOGW("Cannot find `name` attribute in Python plugin info object: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
py_author = PyObject_GetAttrString(plugin_info, "author");
if (!py_author) {
BT_LOGW("Cannot find `author` attribute in Python plugin info object: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
py_description = PyObject_GetAttrString(plugin_info, "description");
if (!py_description) {
BT_LOGW("Cannot find `desciption` attribute in Python plugin info object: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
py_license = PyObject_GetAttrString(plugin_info, "license");
if (!py_license) {
BT_LOGW("Cannot find `license` attribute in Python plugin info object: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
py_version = PyObject_GetAttrString(plugin_info, "version");
if (!py_version) {
BT_LOGW("Cannot find `version` attribute in Python plugin info object: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
py_comp_class_addrs = PyObject_GetAttrString(plugin_info,
"comp_class_addrs");
if (!py_comp_class_addrs) {
BT_LOGW("Cannot find `comp_class_addrs` attribute in Python plugin info object: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
if (PyUnicode_Check(py_name)) {
name = PyUnicode_AsUTF8(py_name);
if (!name) {
BT_LOGW("Cannot decode Python plugin name string: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
} else {
/* Plugin name is mandatory */
BT_LOGW("Plugin name is not a string: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
if (PyUnicode_Check(py_author)) {
author = PyUnicode_AsUTF8(py_author);
if (!author) {
BT_LOGW("Cannot decode Python plugin author string: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
}
if (PyUnicode_Check(py_description)) {
description = PyUnicode_AsUTF8(py_description);
if (!description) {
BT_LOGW("Cannot decode Python plugin description string: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
}
if (PyUnicode_Check(py_license)) {
license = PyUnicode_AsUTF8(py_license);
if (!license) {
BT_LOGW("Cannot decode Python plugin license string: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
}
if (PyTuple_Check(py_version)) {
if (PyTuple_Size(py_version) >= 3) {
PyObject *py_major = PyTuple_GetItem(py_version, 0);
PyObject *py_minor = PyTuple_GetItem(py_version, 1);
PyObject *py_patch = PyTuple_GetItem(py_version, 2);
assert(py_major);
assert(py_minor);
assert(py_patch);
if (PyLong_Check(py_major)) {
major = PyLong_AsUnsignedLong(py_major);
}
if (PyLong_Check(py_minor)) {
minor = PyLong_AsUnsignedLong(py_minor);
}
if (PyLong_Check(py_patch)) {
patch = PyLong_AsUnsignedLong(py_patch);
}
if (PyErr_Occurred()) {
/* Overflow error, most probably */
BT_LOGW("Invalid Python plugin version format: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
}
if (PyTuple_Size(py_version) >= 4) {
PyObject *py_extra = PyTuple_GetItem(py_version, 3);
assert(py_extra);
if (PyUnicode_Check(py_extra)) {
version_extra = PyUnicode_AsUTF8(py_extra);
if (!version_extra) {
BT_LOGW("Cannot decode Python plugin version's extra string: "
"py-plugin-info-addr=%p", plugin_info);
goto error;
}
}
}
}
plugin = bt_plugin_create_empty(BT_PLUGIN_TYPE_PYTHON);
if (!plugin) {
BT_LOGE_STR("Cannot create empty plugin object.");
goto error;
}
bt_plugin_set_name(plugin, name);
if (description) {
bt_plugin_set_description(plugin, description);
}
if (author) {
bt_plugin_set_author(plugin, author);
}
if (license) {
bt_plugin_set_license(plugin, license);
}
bt_plugin_set_version(plugin, major, minor, patch, version_extra);
if (PyList_Check(py_comp_class_addrs)) {
size_t i;
for (i = 0; i < PyList_Size(py_comp_class_addrs); i++) {
struct bt_component_class *comp_class;
PyObject *py_comp_class_addr;
py_comp_class_addr =
PyList_GetItem(py_comp_class_addrs, i);
assert(py_comp_class_addr);
if (PyLong_Check(py_comp_class_addr)) {
comp_class = (struct bt_component_class *)
PyLong_AsUnsignedLongLong(py_comp_class_addr);
} else {
BT_LOGW("Component class address is not an integer in Python plugin info object: "
"py-plugin-info-addr=%p, index=%zu",
plugin_info, i);
continue;
}
ret = bt_plugin_add_component_class(plugin, comp_class);
if (ret < 0) {
BT_LOGE("Cannot add component class to plugin: "
"py-plugin-info-addr=%p, "
"plugin-addr=%p, plugin-name=\"%s\", "
"comp-class-addr=%p, "
"comp-class-name=\"%s\", "
"comp-class-type=%s",
plugin_info,
plugin, bt_plugin_get_name(plugin),
comp_class,
bt_component_class_get_name(comp_class),
bt_component_class_type_string(
bt_component_class_get_type(comp_class)));
continue;
}
}
}
bt_plugin_freeze(plugin);
goto end;
error:
print_python_traceback_warn();
pyerr_clear();
BT_PUT(plugin);
end:
Py_XDECREF(py_name);
Py_XDECREF(py_author);
Py_XDECREF(py_description);
Py_XDECREF(py_license);
Py_XDECREF(py_version);
Py_XDECREF(py_comp_class_addrs);
return plugin;
}
G_MODULE_EXPORT
struct bt_plugin_set *bt_plugin_python_create_all_from_file(const char *path)
{
struct bt_plugin_set *plugin_set = NULL;
struct bt_plugin *plugin = NULL;
PyObject *py_plugin_info = NULL;
gchar *basename = NULL;
size_t path_len;
assert(path);
if (python_state == PYTHON_STATE_CANNOT_INITIALIZE) {
/*
* We do not even care about the rest of the function
* here because we already know Python cannot be fully
* initialized.
*/
goto error;
}
BT_LOGD("Creating all Python plugins from file: path=\"%s\"", path);
path_len = strlen(path);
/* File name ends with `.py` */
if (strncmp(path + path_len - PYTHON_PLUGIN_FILE_EXT_LEN,
PYTHON_PLUGIN_FILE_EXT,
PYTHON_PLUGIN_FILE_EXT_LEN) != 0) {
BT_LOGD("Skipping non-Python file: path=\"%s\"", path);
goto error;
}
/* File name starts with `bt_plugin_` */
basename = g_path_get_basename(path);
if (!basename) {
BT_LOGW("Cannot get path's basename: path=\"%s\"", path);
goto error;
}
if (strncmp(basename, PYTHON_PLUGIN_FILE_PREFIX,
PYTHON_PLUGIN_FILE_PREFIX_LEN) != 0) {
BT_LOGD("Skipping Python file not starting with `%s`: "
"path=\"%s\"", PYTHON_PLUGIN_FILE_PREFIX, path);
goto error;
}
/*
* Initialize Python now.
*
* This is not done in the library contructor because the
* interpreter is somewhat slow to initialize. If you don't
* have any potential Python plugins, you don't need to endure
* this waiting time everytime you load the library.
*/
init_python();
if (python_state != PYTHON_STATE_FULLY_INITIALIZED) {
/*
* For some reason we cannot initialize Python,
* import the required modules, and get the required
* attributes from them.
*/
BT_LOGI("Failed to initialize Python interpreter.");
goto error;
}
/*
* Call bt2.py_plugin._try_load_plugin_module() with this path
* to get plugin info if the plugin is loadable and complete.
* This function returns None when there's an error, but just in
* case we also manually clear the last Python error state.
*/
BT_LOGD_STR("Getting Python plugin info object from Python module.");
py_plugin_info = PyObject_CallFunction(py_try_load_plugin_module_func,
"(s)", path);
if (!py_plugin_info || py_plugin_info == Py_None) {
BT_LOGW("Cannot load Python plugin: path=\"%s\"", path);
print_python_traceback_warn();
PyErr_Clear();
goto error;
}
/*
* Get bt_plugin from plugin info object.
*/
plugin = bt_plugin_from_python_plugin_info(py_plugin_info);
if (!plugin) {
BT_LOGW("Cannot create plugin object from Python plugin info object: "
"path=\"%s\", py-plugin-info-addr=%p",
path, py_plugin_info);
goto error;
}
bt_plugin_set_path(plugin, path);
plugin_set = bt_plugin_set_create();
if (!plugin_set) {
BT_LOGE_STR("Cannot create empty plugin set.");
goto error;
}
bt_plugin_set_add_plugin(plugin_set, plugin);
BT_LOGD("Created all Python plugins from file: path=\"%s\", "
"plugin-addr=%p, plugin-name=\"%s\"",
path, plugin, bt_plugin_get_name(plugin));
goto end;
error:
BT_PUT(plugin_set);
end:
bt_put(plugin);
Py_XDECREF(py_plugin_info);
g_free(basename);
return plugin_set;
}
static
enum bt_btr_status read_basic_float_and_call_cb(struct bt_btr *btr,
const uint8_t *buf, size_t at)
{
int ret;
double dblval;
int64_t field_size;
enum bt_byte_order bo;
enum bt_btr_status status = BT_BTR_STATUS_OK;
field_size = get_basic_field_type_size(btr, btr->cur_basic_field_type);
bo = bt_field_type_get_byte_order(btr->cur_basic_field_type);
btr->cur_bo = bo;
switch (field_size) {
case 32:
{
uint64_t v;
union {
uint32_t u;
float f;
} f32;
ret = bt_field_type_floating_point_get_mantissa_digits(
btr->cur_basic_field_type);
assert(ret == 24);
ret = bt_field_type_floating_point_get_exponent_digits(
btr->cur_basic_field_type);
assert(ret == 8);
status = read_unsigned_bitfield(buf, at, field_size, bo, &v);
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("Cannot read unsigned 32-bit bit array for floating point number field: "
"btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
goto end;
}
f32.u = (uint32_t) v;
dblval = (double) f32.f;
break;
}
case 64:
{
union {
uint64_t u;
double d;
} f64;
ret = bt_field_type_floating_point_get_mantissa_digits(
btr->cur_basic_field_type);
assert(ret == 53);
ret = bt_field_type_floating_point_get_exponent_digits(
btr->cur_basic_field_type);
assert(ret == 11);
status = read_unsigned_bitfield(buf, at, field_size, bo,
&f64.u);
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("Cannot read unsigned 64-bit bit array for floating point number field: "
"btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
goto end;
}
dblval = f64.d;
break;
}
default:
/* Only 32-bit and 64-bit fields are supported currently */
BT_LOGW("Only 32-bit and 64-bit floating point number fields are supported: "
"btr-addr=%p", btr);
status = BT_BTR_STATUS_ERROR;
goto end;
}
BT_LOGV("Read floating point number value: btr=%p, cur=%zu, val=%f",
btr, at, dblval);
if (btr->user.cbs.types.floating_point) {
BT_LOGV("Calling user function (floating point number).");
status = btr->user.cbs.types.floating_point(dblval,
btr->cur_basic_field_type, btr->user.data);
BT_LOGV("User function returned: status=%s",
bt_btr_status_string(status));
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("User function failed: btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
}
}
end:
return status;
}
static
int add_ds_file_to_ds_file_group(struct ctf_fs_trace *ctf_fs_trace,
const char *path)
{
int64_t stream_instance_id = -1;
int64_t begin_ns = -1;
struct ctf_fs_ds_file_group *ds_file_group = NULL;
bool add_group = false;
int ret;
size_t i;
struct ctf_fs_ds_file *ds_file = NULL;
struct ctf_fs_ds_index *index = NULL;
struct bt_msg_iter *msg_iter = NULL;
struct ctf_stream_class *sc = NULL;
struct bt_msg_iter_packet_properties props;
msg_iter = bt_msg_iter_create(ctf_fs_trace->metadata->tc,
bt_common_get_page_size() * 8, ctf_fs_ds_file_medops, NULL);
if (!msg_iter) {
BT_LOGE_STR("Cannot create a CTF message iterator.");
goto error;
}
ds_file = ctf_fs_ds_file_create(ctf_fs_trace, NULL, msg_iter,
NULL, path);
if (!ds_file) {
goto error;
}
ret = bt_msg_iter_get_packet_properties(ds_file->msg_iter, &props);
if (ret) {
BT_LOGE("Cannot get stream file's first packet's header and context fields (`%s`).",
path);
goto error;
}
sc = ctf_trace_class_borrow_stream_class_by_id(ds_file->metadata->tc,
props.stream_class_id);
BT_ASSERT(sc);
stream_instance_id = props.data_stream_id;
if (props.snapshots.beginning_clock != UINT64_C(-1)) {
BT_ASSERT(sc->default_clock_class);
ret = bt_util_clock_cycles_to_ns_from_origin(
props.snapshots.beginning_clock,
sc->default_clock_class->frequency,
sc->default_clock_class->offset_seconds,
sc->default_clock_class->offset_cycles, &begin_ns);
if (ret) {
BT_LOGE("Cannot convert clock cycles to nanoseconds from origin (`%s`).",
path);
goto error;
}
}
index = ctf_fs_ds_file_build_index(ds_file);
if (!index) {
BT_LOGW("Failed to index CTF stream file \'%s\'",
ds_file->file->path->str);
}
if (begin_ns == -1) {
/*
* No beggining timestamp to sort the stream files
* within a stream file group, so consider that this
* file must be the only one within its group.
*/
stream_instance_id = -1;
}
if (stream_instance_id == -1) {
/*
* No stream instance ID or no beginning timestamp:
* create a unique stream file group for this stream
* file because, even if there's a stream instance ID,
* there's no timestamp to order the file within its
* group.
*/
ds_file_group = ctf_fs_ds_file_group_create(ctf_fs_trace,
sc, UINT64_C(-1));
if (!ds_file_group) {
goto error;
}
ret = ctf_fs_ds_file_group_add_ds_file_info(ds_file_group,
path, begin_ns, index);
/* Ownership of index is transferred. */
index = NULL;
if (ret) {
goto error;
}
add_group = true;
goto end;
}
BT_ASSERT(stream_instance_id != -1);
BT_ASSERT(begin_ns != -1);
/* Find an existing stream file group with this ID */
for (i = 0; i < ctf_fs_trace->ds_file_groups->len; i++) {
ds_file_group = g_ptr_array_index(
ctf_fs_trace->ds_file_groups, i);
if (ds_file_group->sc == sc &&
ds_file_group->stream_id ==
stream_instance_id) {
break;
}
ds_file_group = NULL;
}
if (!ds_file_group) {
ds_file_group = ctf_fs_ds_file_group_create(ctf_fs_trace,
sc, stream_instance_id);
if (!ds_file_group) {
goto error;
}
add_group = true;
}
ret = ctf_fs_ds_file_group_add_ds_file_info(ds_file_group, path,
begin_ns, index);
index = NULL;
if (ret) {
goto error;
}
goto end;
error:
ctf_fs_ds_file_group_destroy(ds_file_group);
ds_file_group = NULL;
ret = -1;
end:
if (add_group && ds_file_group) {
g_ptr_array_add(ctf_fs_trace->ds_file_groups, ds_file_group);
}
ctf_fs_ds_file_destroy(ds_file);
if (msg_iter) {
bt_msg_iter_destroy(msg_iter);
}
ctf_fs_ds_index_destroy(index);
return ret;
}
static inline
enum bt_btr_status read_basic_int_and_call(struct bt_btr *btr,
const uint8_t *buf, size_t at,
struct bt_field_type *int_type,
struct bt_field_type *orig_type)
{
bt_bool signd;
int64_t field_size;
enum bt_byte_order bo;
enum bt_btr_status status = BT_BTR_STATUS_OK;
signd = bt_field_type_integer_is_signed(int_type);
field_size = get_basic_field_type_size(btr, int_type);
if (field_size < 1) {
BT_LOGW("Cannot get integer field type's size: "
"btr=%p, at=%zu, ft-addr=%p",
btr, at, int_type);
status = BT_BTR_STATUS_ERROR;
goto end;
}
bo = bt_field_type_get_byte_order(int_type);
/*
* Update current byte order now because we could be reading
* the integer value of an enumeration type, and thus we know
* here the actual supporting integer type's byte order.
*/
btr->cur_bo = bo;
if (signd) {
int64_t v;
status = read_signed_bitfield(buf, at, field_size, bo, &v);
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("Cannot read signed bit array for signed integer field: "
"btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
goto end;
}
if (btr->user.cbs.types.signed_int) {
BT_LOGV("Calling user function (signed integer).");
status = btr->user.cbs.types.signed_int(v,
btr->cur_basic_field_type, btr->user.data);
BT_LOGV("User function returned: status=%s",
bt_btr_status_string(status));
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("User function failed: "
"btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
}
}
} else {
uint64_t v;
status = read_unsigned_bitfield(buf, at, field_size, bo, &v);
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("Cannot read unsigned bit array for unsigned integer field: "
"btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
goto end;
}
if (btr->user.cbs.types.unsigned_int) {
BT_LOGV("Calling user function (unsigned integer).");
status = btr->user.cbs.types.unsigned_int(v,
btr->cur_basic_field_type, btr->user.data);
BT_LOGV("User function returned: status=%s",
bt_btr_status_string(status));
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("User function failed: "
"btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
}
}
}
end:
return status;
}
static inline
enum bt_btr_status read_basic_type_and_call_continue(struct bt_btr *btr,
read_basic_and_call_cb_t read_basic_and_call_cb)
{
size_t available;
int64_t field_size;
int64_t needed_bits;
enum bt_btr_status status = BT_BTR_STATUS_OK;
if (!at_least_one_bit_left(btr)) {
BT_LOGV("Reached end of data: btr-addr=%p", btr);
status = BT_BTR_STATUS_EOF;
goto end;
}
field_size = get_basic_field_type_size(btr, btr->cur_basic_field_type);
if (field_size < 1) {
BT_LOGW("Cannot get basic field type's size: "
"btr-addr=%p, ft-addr=%p",
btr, btr->cur_basic_field_type);
status = BT_BTR_STATUS_ERROR;
goto end;
}
available = available_bits(btr);
needed_bits = field_size - btr->stitch.at;
BT_LOGV("Continuing basic field decoding: "
"btr-addr=%p, field-size=%" PRId64 ", needed-size=%" PRId64 ", "
"available-size=%zu",
btr, field_size, needed_bits, available);
if (needed_bits <= available) {
/* We have all the bits; append to stitch, then decode */
stitch_append_from_buf(btr, needed_bits);
status = read_basic_and_call_cb(btr, btr->stitch.buf,
btr->stitch.offset);
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("Cannot read basic field: "
"btr-addr=%p, ft-addr=%p, status=%s",
btr, btr->cur_basic_field_type,
bt_btr_status_string(status));
goto end;
}
if (stack_empty(btr->stack)) {
/* Root is a basic type */
btr->state = BTR_STATE_DONE;
} else {
/* Go to next field */
stack_top(btr->stack)->index++;
btr->state = BTR_STATE_NEXT_FIELD;
btr->last_bo = btr->cur_bo;
}
goto end;
}
/* We are here; it means we don't have enough data to decode this */
BT_LOGV_STR("Not enough data to read the next basic field: appending to stitch buffer.");
stitch_append_from_remaining_buf(btr);
status = BT_BTR_STATUS_EOF;
end:
return status;
}
static inline
enum bt_btr_status read_basic_type_and_call_begin(struct bt_btr *btr,
read_basic_and_call_cb_t read_basic_and_call_cb)
{
size_t available;
int64_t field_size;
enum bt_byte_order bo;
enum bt_btr_status status = BT_BTR_STATUS_OK;
if (!at_least_one_bit_left(btr)) {
BT_LOGV("Reached end of data: btr-addr=%p", btr);
status = BT_BTR_STATUS_EOF;
goto end;
}
field_size = get_basic_field_type_size(btr, btr->cur_basic_field_type);
if (field_size < 1) {
BT_LOGW("Cannot get basic field type's size: "
"btr-addr=%p, ft-addr=%p",
btr, btr->cur_basic_field_type);
status = BT_BTR_STATUS_ERROR;
goto end;
}
bo = bt_field_type_get_byte_order(btr->cur_basic_field_type);
status = validate_contiguous_bo(btr, bo);
if (status != BT_BTR_STATUS_OK) {
/* validate_contiguous_bo() logs errors */
goto end;
}
available = available_bits(btr);
if (field_size <= available) {
/* We have all the bits; decode and set now */
assert(btr->buf.addr);
status = read_basic_and_call_cb(btr, btr->buf.addr,
buf_at_from_addr(btr));
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("Cannot read basic field: "
"btr-addr=%p, ft-addr=%p, status=%s",
btr, btr->cur_basic_field_type,
bt_btr_status_string(status));
goto end;
}
consume_bits(btr, field_size);
if (stack_empty(btr->stack)) {
/* Root is a basic type */
btr->state = BTR_STATE_DONE;
} else {
/* Go to next field */
stack_top(btr->stack)->index++;
btr->state = BTR_STATE_NEXT_FIELD;
btr->last_bo = btr->cur_bo;
}
goto end;
}
/* We are here; it means we don't have enough data to decode this */
BT_LOGV_STR("Not enough data to read the next basic field: setting stitch buffer.");
stitch_set_from_remaining_buf(btr);
btr->state = BTR_STATE_READ_BASIC_CONTINUE;
status = BT_BTR_STATUS_EOF;
end:
return status;
}
static inline
enum bt_btr_status read_basic_string_type_and_call(
struct bt_btr *btr, bool begin)
{
size_t buf_at_bytes;
const uint8_t *result;
size_t available_bytes;
const uint8_t *first_chr;
enum bt_btr_status status = BT_BTR_STATUS_OK;
if (!at_least_one_bit_left(btr)) {
BT_LOGV("Reached end of data: btr-addr=%p", btr);
status = BT_BTR_STATUS_EOF;
goto end;
}
assert(buf_at_from_addr(btr) % 8 == 0);
available_bytes = BITS_TO_BYTES_FLOOR(available_bits(btr));
buf_at_bytes = BITS_TO_BYTES_FLOOR(buf_at_from_addr(btr));
assert(btr->buf.addr);
first_chr = &btr->buf.addr[buf_at_bytes];
result = memchr(first_chr, '\0', available_bytes);
if (begin && btr->user.cbs.types.string_begin) {
BT_LOGV("Calling user function (string, beginning).");
status = btr->user.cbs.types.string_begin(
btr->cur_basic_field_type, btr->user.data);
BT_LOGV("User function returned: status=%s",
bt_btr_status_string(status));
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("User function failed: btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
goto end;
}
}
if (!result) {
/* No null character yet */
if (btr->user.cbs.types.string) {
BT_LOGV("Calling user function (substring).");
status = btr->user.cbs.types.string(
(const char *) first_chr,
available_bytes, btr->cur_basic_field_type,
btr->user.data);
BT_LOGV("User function returned: status=%s",
bt_btr_status_string(status));
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("User function failed: "
"btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
goto end;
}
}
consume_bits(btr, BYTES_TO_BITS(available_bytes));
btr->state = BTR_STATE_READ_BASIC_CONTINUE;
status = BT_BTR_STATUS_EOF;
} else {
/* Found the null character */
size_t result_len = (size_t) (result - first_chr);
if (btr->user.cbs.types.string && result_len) {
BT_LOGV("Calling user function (substring).");
status = btr->user.cbs.types.string(
(const char *) first_chr,
result_len, btr->cur_basic_field_type,
btr->user.data);
BT_LOGV("User function returned: status=%s",
bt_btr_status_string(status));
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("User function failed: "
"btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
goto end;
}
}
if (btr->user.cbs.types.string_end) {
BT_LOGV("Calling user function (string, end).");
status = btr->user.cbs.types.string_end(
btr->cur_basic_field_type, btr->user.data);
BT_LOGV("User function returned: status=%s",
bt_btr_status_string(status));
if (status != BT_BTR_STATUS_OK) {
BT_LOGW("User function failed: "
"btr-addr=%p, status=%s",
btr, bt_btr_status_string(status));
goto end;
}
}
consume_bits(btr, BYTES_TO_BITS(result_len + 1));
if (stack_empty(btr->stack)) {
/* Root is a basic type */
btr->state = BTR_STATE_DONE;
} else {
/* Go to next field */
stack_top(btr->stack)->index++;
btr->state = BTR_STATE_NEXT_FIELD;
btr->last_bo = btr->cur_bo;
}
}
end:
return status;
}
BT_HIDDEN
struct ctf_metadata_decoder *ctf_metadata_decoder_create(
const struct ctf_metadata_decoder_config *config,
const char *name)
{
struct ctf_metadata_decoder *mdec =
g_new0(struct ctf_metadata_decoder, 1);
struct ctf_metadata_decoder_config default_config = {
.clock_class_offset_s = 0,
.clock_class_offset_ns = 0,
};
if (!config) {
config = &default_config;
}
BT_LOGD("Creating CTF metadata decoder: "
"clock-class-offset-s=%" PRId64 ", "
"clock-class-offset-ns=%" PRId64 ", name=\"%s\"",
config->clock_class_offset_s, config->clock_class_offset_ns,
name);
if (!mdec) {
BT_LOGE_STR("Failed to allocate one CTF metadata decoder.");
goto end;
}
mdec->config = *config;
mdec->visitor = ctf_visitor_generate_ir_create(config, name);
if (!mdec->visitor) {
BT_LOGE("Failed to create a CTF IR metadata AST visitor: "
"mdec-addr=%p", mdec);
ctf_metadata_decoder_destroy(mdec);
mdec = NULL;
goto end;
}
BT_LOGD("Creating CTF metadata decoder: "
"clock-class-offset-s=%" PRId64 ", "
"clock-class-offset-ns=%" PRId64 ", "
"name=\"%s\", addr=%p",
config->clock_class_offset_s, config->clock_class_offset_ns,
name, mdec);
end:
return mdec;
}
BT_HIDDEN
void ctf_metadata_decoder_destroy(struct ctf_metadata_decoder *mdec)
{
if (!mdec) {
return;
}
BT_LOGD("Destroying CTF metadata decoder: addr=%p", mdec);
ctf_visitor_generate_ir_destroy(mdec->visitor);
g_free(mdec);
}
BT_HIDDEN
enum ctf_metadata_decoder_status ctf_metadata_decoder_decode(
struct ctf_metadata_decoder *mdec, FILE *fp)
{
enum ctf_metadata_decoder_status status =
CTF_METADATA_DECODER_STATUS_OK;
int ret;
struct ctf_scanner *scanner = NULL;
char *buf = NULL;
bool close_fp = false;
assert(mdec);
if (ctf_metadata_decoder_is_packetized(fp, &mdec->bo)) {
BT_LOGD("Metadata stream is packetized: mdec-addr=%p", mdec);
ret = ctf_metadata_decoder_packetized_file_stream_to_buf_with_mdec(
mdec, fp, &buf, mdec->bo);
if (ret) {
BT_LOGE("Cannot decode packetized metadata packets to metadata text: "
"mdec-addr=%p, ret=%d", mdec, ret);
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
}
if (strlen(buf) == 0) {
/* An empty metadata packet is OK. */
goto end;
}
/* Convert the real file pointer to a memory file pointer */
fp = bt_fmemopen(buf, strlen(buf), "rb");
close_fp = true;
if (!fp) {
BT_LOGE("Cannot memory-open metadata buffer: %s: "
"mdec-addr=%p", strerror(errno), mdec);
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
}
} else {
unsigned int major, minor;
ssize_t nr_items;
const long init_pos = ftell(fp);
BT_LOGD("Metadata stream is plain text: mdec-addr=%p", mdec);
if (init_pos < 0) {
BT_LOGE_ERRNO("Failed to get current file position", ".");
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
}
/* Check text-only metadata header and version */
nr_items = fscanf(fp, "/* CTF %10u.%10u", &major, &minor);
if (nr_items < 2) {
BT_LOGW("Missing \"/* CTF major.minor\" signature in plain text metadata file stream: "
"mdec-addr=%p", mdec);
}
BT_LOGD("Found metadata stream version in signature: version=%u.%u", major, minor);
if (!is_version_valid(major, minor)) {
BT_LOGE("Invalid metadata version found in plain text signature: "
"version=%u.%u, mdec-addr=%p", major, minor,
mdec);
status = CTF_METADATA_DECODER_STATUS_INVAL_VERSION;
goto end;
}
if (fseek(fp, init_pos, SEEK_SET)) {
BT_LOGE("Cannot seek metadata file stream to initial position: %s: "
"mdec-addr=%p", strerror(errno), mdec);
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
}
}
if (BT_LOG_ON_VERBOSE) {
yydebug = 1;
}
/* Allocate a scanner and append the metadata text content */
scanner = ctf_scanner_alloc();
if (!scanner) {
BT_LOGE("Cannot allocate a metadata lexical scanner: "
"mdec-addr=%p", mdec);
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
}
assert(fp);
ret = ctf_scanner_append_ast(scanner, fp);
if (ret) {
BT_LOGE("Cannot create the metadata AST out of the metadata text: "
"mdec-addr=%p", mdec);
status = CTF_METADATA_DECODER_STATUS_INCOMPLETE;
goto end;
}
ret = ctf_visitor_semantic_check(0, &scanner->ast->root);
if (ret) {
BT_LOGE("Validation of the metadata semantics failed: "
"mdec-addr=%p", mdec);
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
}
ret = ctf_visitor_generate_ir_visit_node(mdec->visitor,
&scanner->ast->root);
switch (ret) {
case 0:
/* Success */
break;
case -EINCOMPLETE:
BT_LOGD("While visiting metadata AST: incomplete data: "
"mdec-addr=%p", mdec);
status = CTF_METADATA_DECODER_STATUS_INCOMPLETE;
goto end;
default:
BT_LOGE("Failed to visit AST node to create CTF IR objects: "
"mdec-addr=%p, ret=%d", mdec, ret);
status = CTF_METADATA_DECODER_STATUS_IR_VISITOR_ERROR;
goto end;
}
end:
if (scanner) {
ctf_scanner_free(scanner);
}
yydebug = 0;
if (fp && close_fp) {
if (fclose(fp)) {
BT_LOGE("Cannot close metadata file stream: "
"mdec-addr=%p", mdec);
}
}
if (buf) {
free(buf);
}
return status;
}
BT_HIDDEN
struct bt_trace *ctf_metadata_decoder_get_trace(
struct ctf_metadata_decoder *mdec)
{
return ctf_visitor_generate_ir_get_trace(mdec->visitor);
}
int bt_event_set_packet(struct bt_event *event,
struct bt_packet *packet)
{
struct bt_stream_class *event_stream_class = NULL;
struct bt_stream_class *packet_stream_class = NULL;
struct bt_stream *stream = NULL;
int ret = 0;
if (!event || !packet) {
BT_LOGW("Invalid parameter: event or packet is NULL: "
"event-addr=%p, packet-addr=%p",
event, packet);
ret = -1;
goto end;
}
if (event->frozen) {
BT_LOGW("Invalid parameter: event is frozen: addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64,
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class));
ret = -1;
goto end;
}
/*
* Make sure the new packet was created by this event's
* stream, if it is set.
*/
stream = bt_event_get_stream(event);
if (stream) {
if (packet->stream != stream) {
BT_LOGW("Invalid parameter: packet's stream and event's stream differ: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", packet-stream-addr=%p, "
"event-stream-addr=%p",
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
packet->stream, stream);
ret = -1;
goto end;
}
} else {
event_stream_class =
bt_event_class_get_stream_class(event->event_class);
packet_stream_class =
bt_stream_get_class(packet->stream);
assert(event_stream_class);
assert(packet_stream_class);
if (event_stream_class != packet_stream_class) {
BT_LOGW("Invalid parameter: packet's stream class and event's stream class differ: "
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", packet-stream-class-addr=%p, "
"event-stream-class-addr=%p",
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class),
packet_stream_class, event_stream_class);
ret = -1;
goto end;
}
}
bt_get(packet);
BT_MOVE(event->packet, packet);
BT_LOGV("Set event's packet: event-addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64 ", "
"packet-addr=%p",
event, bt_event_class_get_name(event->event_class),
bt_event_class_get_id(event->event_class), packet);
end:
BT_PUT(stream);
BT_PUT(event_stream_class);
BT_PUT(packet_stream_class);
return ret;
}
BT_HIDDEN
int bt_ctf_event_class_serialize(struct bt_ctf_event_class *event_class,
struct metadata_context *context)
{
int ret = 0;
struct bt_ctf_value *attr_value = NULL;
BT_ASSERT(event_class);
BT_ASSERT(context);
BT_LOGD("Serializing event class's metadata: "
"event-class-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", metadata-context-addr=%p",
event_class, bt_ctf_event_class_get_name(event_class),
bt_ctf_event_class_get_id(event_class), context);
context->current_indentation_level = 1;
g_string_assign(context->field_name, "");
g_string_append(context->string, "event {\n");
/* Serialize attributes */
g_string_append_printf(context->string, "\tname = \"%s\";\n",
event_class->common.name->str);
BT_ASSERT(event_class->common.id >= 0);
g_string_append_printf(context->string, "\tid = %" PRId64 ";\n",
event_class->common.id);
g_string_append_printf(context->string, "\tstream_id = %" PRId64 ";\n",
bt_ctf_stream_class_common_get_id(
bt_ctf_event_class_common_borrow_stream_class(
BT_CTF_TO_COMMON(event_class))));
if (event_class->common.log_level !=
BT_CTF_EVENT_CLASS_LOG_LEVEL_UNSPECIFIED) {
g_string_append_printf(context->string, "\tloglevel = %d;\n",
(int) event_class->common.log_level);
}
if (event_class->common.emf_uri->len > 0) {
g_string_append_printf(context->string, "\tmodel.emf.uri = \"%s\";\n",
event_class->common.emf_uri->str);
}
/* Serialize context field type */
if (event_class->common.context_field_type) {
g_string_append(context->string, "\tcontext := ");
BT_LOGD_STR("Serializing event class's context field type metadata.");
ret = bt_ctf_field_type_serialize_recursive(
(void *) event_class->common.context_field_type,
context);
if (ret) {
BT_LOGW("Cannot serialize event class's context field type's metadata: "
"ret=%d", ret);
goto end;
}
g_string_append(context->string, ";\n");
}
/* Serialize payload field type */
if (event_class->common.payload_field_type) {
g_string_append(context->string, "\tfields := ");
BT_LOGD_STR("Serializing event class's payload field type metadata.");
ret = bt_ctf_field_type_serialize_recursive(
(void *) event_class->common.payload_field_type,
context);
if (ret) {
BT_LOGW("Cannot serialize event class's payload field type's metadata: "
"ret=%d", ret);
goto end;
}
g_string_append(context->string, ";\n");
}
g_string_append(context->string, "};\n\n");
end:
context->current_indentation_level = 0;
BT_CTF_OBJECT_PUT_REF_AND_RESET(attr_value);
return ret;
}
