#include <babeltrace/ctf-ir/stream.h>
#include <babeltrace/ctf-ir/stream-internal.h>
#include <babeltrace/ctf-ir/stream-class-internal.h>
+#include <babeltrace/ctf-ir/trace-internal.h>
+#include <babeltrace/ctf-writer/writer-internal.h>
#include <babeltrace/ref.h>
#include <babeltrace/ctf-writer/functor-internal.h>
#include <babeltrace/compiler.h>
}
}
-BT_HIDDEN
+static
+int create_stream_file(struct bt_ctf_writer *writer,
+ struct bt_ctf_stream *stream)
+{
+ int fd;
+ GString *filename = g_string_new(stream->stream_class->name->str);
+
+ if (stream->stream_class->name->len == 0) {
+ int64_t ret;
+
+ ret = bt_ctf_stream_class_get_id(stream->stream_class);
+ if (ret < 0) {
+ fd = -1;
+ goto error;
+ }
+
+ g_string_printf(filename, "stream_%" PRId64, ret);
+ }
+
+ g_string_append_printf(filename, "_%" PRIu32, stream->id);
+ fd = openat(writer->trace_dir_fd, filename->str,
+ O_RDWR | O_CREAT | O_TRUNC,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
+error:
+ g_string_free(filename, TRUE);
+ return fd;
+}
+
+static
+int set_stream_fd(struct bt_ctf_stream *stream, int fd)
+{
+ int ret = 0;
+
+ if (stream->pos.fd != -1) {
+ ret = -1;
+ goto end;
+ }
+
+ ctf_init_pos(&stream->pos, NULL, fd, O_RDWR);
+ stream->pos.fd = fd;
+end:
+ return ret;
+}
+
struct bt_ctf_stream *bt_ctf_stream_create(
- struct bt_ctf_stream_class *stream_class,
- struct bt_ctf_trace *trace)
+ struct bt_ctf_stream_class *stream_class)
{
int ret;
struct bt_ctf_stream *stream = NULL;
+ struct bt_ctf_trace *trace = NULL;
+ struct bt_ctf_writer *writer = NULL;
+
+ if (!stream_class) {
+ goto end;
+ }
- if (!stream_class || !trace) {
+ trace = bt_ctf_stream_class_get_trace(stream_class);
+ if (!trace) {
goto end;
}
* reachable; it needs its parent to remain valid.
*/
bt_object_set_parent(stream, trace);
- stream->packet_context = bt_ctf_field_create(
- stream_class->packet_context_type);
- if (!stream->packet_context) {
- goto error;
- }
+ stream->id = stream_class->next_stream_id++;
+ stream->stream_class = stream_class;
+ stream->pos.fd = -1;
- /*
- * A stream class may not have a stream event context defined
- * in which case this stream will never have a stream_event_context
- * member since, after a stream's creation, the parent stream class
- * is "frozen" (immutable).
- */
- if (stream_class->event_context_type) {
- stream->event_context = bt_ctf_field_create(
- stream_class->event_context_type);
- if (!stream->event_context) {
+ if (trace->is_created_by_writer) {
+ int fd;
+ writer = (struct bt_ctf_writer *)
+ bt_object_get_parent(trace);
+
+ assert(writer);
+ stream->packet_context = bt_ctf_field_create(
+ stream_class->packet_context_type);
+ if (!stream->packet_context) {
goto error;
}
- }
- /* Initialize events_discarded */
- ret = set_structure_field_integer(stream->packet_context,
- "events_discarded", 0);
- if (ret) {
- goto error;
- }
+ /* Initialize events_discarded */
+ ret = set_structure_field_integer(stream->packet_context,
+ "events_discarded", 0);
+ if (ret) {
+ goto error;
+ }
- stream->pos.fd = -1;
- stream->id = stream_class->next_stream_id++;
- stream->stream_class = stream_class;
- stream->events = g_ptr_array_new_with_free_func(
- (GDestroyNotify) release_event);
- if (!stream->events) {
- goto error;
- }
- if (stream_class->event_context_type) {
- stream->event_contexts = g_ptr_array_new_with_free_func(
- (GDestroyNotify) bt_put);
- if (!stream->event_contexts) {
+ stream->events = g_ptr_array_new_with_free_func(
+ (GDestroyNotify) release_event);
+ if (!stream->events) {
goto error;
}
- }
- /* A trace is not allowed to have a NULL packet header */
- assert(trace->packet_header_type);
- stream->packet_header = bt_ctf_field_create(trace->packet_header_type);
- if (!stream->packet_header) {
- goto error;
- }
- /*
- * Attempt to populate the default trace packet header fields
- * (magic, uuid and stream_id). This will _not_ fail shall the
- * fields not be found or be of an incompatible type; they will
- * simply not be populated automatically. The user will have to
- * make sure to set the trace packet header fields himself before
- * flushing.
- */
- ret = set_packet_header(stream);
- if (ret) {
- goto error;
+ /* A trace is not allowed to have a NULL packet header */
+ assert(trace->packet_header_type);
+ stream->packet_header =
+ bt_ctf_field_create(trace->packet_header_type);
+ if (!stream->packet_header) {
+ goto error;
+ }
+
+ /*
+ * Attempt to populate the default trace packet header fields
+ * (magic, uuid and stream_id). This will _not_ fail shall the
+ * fields not be found or be of an incompatible type; they will
+ * simply not be populated automatically. The user will have to
+ * make sure to set the trace packet header fields himself
+ * before flushing.
+ */
+ ret = set_packet_header(stream);
+ if (ret) {
+ goto error;
+ }
+
+ /* Create file associated with this stream */
+ fd = create_stream_file(writer, stream);
+ if (fd < 0) {
+ goto error;
+ }
+
+ ret = set_stream_fd(stream, fd);
+ if (ret) {
+ goto error;
+ }
+
+ /* Freeze the writer */
+ bt_ctf_writer_freeze(writer);
+ } else {
+ /* Non-writer stream indicated by a negative FD */
+ ret = set_stream_fd(stream, -1);
+ if (ret) {
+ goto error;
+ }
}
+
+ /* Add this stream to the trace's streams */
+ g_ptr_array_add(trace->streams, stream);
+
end:
+ BT_PUT(trace);
+ BT_PUT(writer);
return stream;
error:
BT_PUT(stream);
- bt_put(trace);
+ BT_PUT(trace);
+ BT_PUT(writer);
return stream;
}
-BT_HIDDEN
-int bt_ctf_stream_set_fd(struct bt_ctf_stream *stream, int fd)
-{
- int ret = 0;
-
- if (stream->pos.fd != -1) {
- ret = -1;
- goto end;
- }
-
- ctf_init_pos(&stream->pos, NULL, fd, O_RDWR);
- stream->pos.fd = fd;
-end:
- return ret;
-}
-
struct bt_ctf_stream_class *bt_ctf_stream_get_class(
struct bt_ctf_stream *stream)
{
struct bt_ctf_field *events_discarded_field = NULL;
struct bt_ctf_field_type *events_discarded_field_type = NULL;
- if (!stream || !count || !stream->packet_context) {
+ if (!stream || !count || !stream->packet_context ||
+ stream->pos.fd < 0) {
ret = -1;
goto end;
}
struct bt_ctf_field *events_discarded_field = NULL;
struct bt_ctf_field_type *events_discarded_field_type = NULL;
- if (!stream || !stream->packet_context) {
+ if (!stream || !stream->packet_context || stream->pos.fd < 0) {
goto end;
}
struct bt_ctf_event *event)
{
int ret = 0;
- struct bt_ctf_field *event_context_copy = NULL;
- if (!stream || !event) {
+ if (!stream || !event || stream->pos.fd < 0) {
ret = -1;
goto end;
}
goto end;
}
- /* Make sure the event's payload is set */
+ /* Make sure the various scopes of the event are set */
ret = bt_ctf_event_validate(event);
if (ret) {
goto end;
}
- /* Sample the current stream event context by copying it */
- if (stream->event_context) {
- /* Make sure the event context's payload is set */
- ret = bt_ctf_field_validate(stream->event_context);
- if (ret) {
- goto end;
- }
-
- event_context_copy = bt_ctf_field_copy(stream->event_context);
- if (!event_context_copy) {
- ret = -1;
- goto end;
- }
- }
-
- /* Save the new event along with its associated stream event context */
+ /* Save the new event and freeze it */
+ bt_ctf_event_freeze(event);
g_ptr_array_add(stream->events, event);
- if (event_context_copy) {
- g_ptr_array_add(stream->event_contexts, event_context_copy);
- }
+
/*
* Event had to hold a reference to its event class as long as it wasn't
* part of the same trace hierarchy. From now on, the event and its
{
struct bt_ctf_field *packet_context = NULL;
- if (!stream) {
+ if (!stream || stream->pos.fd < 0) {
goto end;
}
int ret = 0;
struct bt_ctf_field_type *field_type;
- if (!stream || !field) {
+ if (!stream || !field || stream->pos.fd < 0) {
ret = -1;
goto end;
}
return ret;
}
-struct bt_ctf_field *bt_ctf_stream_get_event_context(
- struct bt_ctf_stream *stream)
-{
- struct bt_ctf_field *event_context = NULL;
-
- if (!stream) {
- goto end;
- }
-
- event_context = stream->event_context;
- if (event_context) {
- bt_get(event_context);
- }
-end:
- return event_context;
-}
-
-int bt_ctf_stream_set_event_context(struct bt_ctf_stream *stream,
- struct bt_ctf_field *field)
-{
- int ret = 0;
- struct bt_ctf_field_type *field_type = NULL;
-
- if (!stream || !field) {
- ret = -1;
- goto end;
- }
-
- field_type = bt_ctf_field_get_type(field);
- if (bt_ctf_field_type_compare(field_type,
- stream->stream_class->event_context_type)) {
- ret = -1;
- goto end;
- }
-
- bt_get(field);
- bt_put(stream->event_context);
- stream->event_context = field;
-end:
- bt_put(field_type);
- return ret;
-}
-
struct bt_ctf_field *bt_ctf_stream_get_packet_header(
struct bt_ctf_stream *stream)
{
struct bt_ctf_field *packet_header = NULL;
- if (!stream) {
+ if (!stream || stream->pos.fd < 0) {
goto end;
}
struct bt_ctf_trace *trace = NULL;
struct bt_ctf_field_type *field_type = NULL;
- if (!stream || !field) {
+ if (!stream || !field || stream->pos.fd < 0) {
ret = -1;
goto end;
}
}
/* Write stream event context */
- if (stream->event_contexts) {
+ if (event->stream_event_context) {
ret = bt_ctf_field_serialize(
- g_ptr_array_index(stream->event_contexts, i),
- &stream->pos);
+ event->stream_event_context, &stream->pos);
if (ret) {
goto end;
}
}
g_ptr_array_set_size(stream->events, 0);
- if (stream->event_contexts) {
- g_ptr_array_set_size(stream->event_contexts, 0);
- }
stream->flushed_packet_count++;
end:
bt_put(integer);
if (stream->events) {
g_ptr_array_free(stream->events, TRUE);
}
- if (stream->event_contexts) {
- g_ptr_array_free(stream->event_contexts, TRUE);
- }
bt_put(stream->packet_header);
bt_put(stream->packet_context);
bt_put(stream->event_context);
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