+++ /dev/null
-/*
- * stream.c
- *
- * Babeltrace CTF Writer
- *
- * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include <babeltrace/ctf-writer/clock.h>
-#include <babeltrace/ctf-ir/clock-internal.h>
-#include <babeltrace/ctf-writer/event.h>
-#include <babeltrace/ctf-ir/event-internal.h>
-#include <babeltrace/ctf-ir/event-types-internal.h>
-#include <babeltrace/ctf-ir/event-fields-internal.h>
-#include <babeltrace/ctf-writer/stream.h>
-#include <babeltrace/ctf-writer/stream-internal.h>
-#include <babeltrace/ctf-ir/stream-class-internal.h>
-#include <babeltrace/ctf-writer/functor-internal.h>
-#include <babeltrace/compiler.h>
-#include <babeltrace/align.h>
-
-static
-void bt_ctf_stream_destroy(struct bt_ctf_ref *ref);
-static
-int set_structure_field_integer(struct bt_ctf_field *, char *, uint64_t);
-
-BT_HIDDEN
-struct bt_ctf_stream *bt_ctf_stream_create(
- struct bt_ctf_stream_class *stream_class)
-{
- struct bt_ctf_stream *stream = NULL;
-
- if (!stream_class) {
- goto end;
- }
-
- stream = g_new0(struct bt_ctf_stream, 1);
- if (!stream) {
- goto end;
- }
-
- bt_ctf_ref_init(&stream->ref_count);
- stream->pos.fd = -1;
- stream->id = stream_class->next_stream_id++;
- stream->stream_class = stream_class;
- bt_ctf_stream_class_get(stream_class);
- bt_ctf_stream_class_freeze(stream_class);
- stream->events = g_ptr_array_new_with_free_func(
- (GDestroyNotify)bt_ctf_event_put);
-end:
- return stream;
-}
-
-BT_HIDDEN
-int bt_ctf_stream_set_flush_callback(struct bt_ctf_stream *stream,
- flush_func callback, void *data)
-{
- int ret = stream ? 0 : -1;
-
- if (!stream) {
- goto end;
- }
-
- stream->flush.func = callback;
- stream->flush.data = data;
-end:
- return ret;
-}
-
-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;
-}
-
-void bt_ctf_stream_append_discarded_events(struct bt_ctf_stream *stream,
- uint64_t event_count)
-{
- if (!stream) {
- return;
- }
-
- stream->events_discarded += event_count;
-}
-
-int bt_ctf_stream_append_event(struct bt_ctf_stream *stream,
- struct bt_ctf_event *event)
-{
- int ret = 0;
- uint64_t timestamp;
-
- if (!stream || !event) {
- ret = -1;
- goto end;
- }
-
- ret = bt_ctf_event_validate(event);
- if (ret) {
- goto end;
- }
-
- timestamp = bt_ctf_clock_get_time(stream->stream_class->clock);
- ret = bt_ctf_event_set_timestamp(event, timestamp);
- if (ret) {
- goto end;
- }
-
- bt_ctf_event_get(event);
- g_ptr_array_add(stream->events, event);
-end:
- return ret;
-}
-
-int bt_ctf_stream_flush(struct bt_ctf_stream *stream)
-{
- int ret = 0;
- size_t i;
- uint64_t timestamp_begin, timestamp_end;
- struct bt_ctf_stream_class *stream_class;
- struct bt_ctf_field *integer = NULL;
- struct ctf_stream_pos packet_context_pos;
-
- if (!stream) {
- ret = -1;
- goto end;
- }
-
- if (!stream->events->len) {
- goto end;
- }
-
- if (stream->flush.func) {
- stream->flush.func(stream, stream->flush.data);
- }
-
- stream_class = stream->stream_class;
- timestamp_begin = ((struct bt_ctf_event *) g_ptr_array_index(
- stream->events, 0))->timestamp;
- timestamp_end = ((struct bt_ctf_event *) g_ptr_array_index(
- stream->events, stream->events->len - 1))->timestamp;
- ret = set_structure_field_integer(stream_class->packet_context,
- "timestamp_begin", timestamp_begin);
- if (ret) {
- goto end;
- }
-
- ret = set_structure_field_integer(stream_class->packet_context,
- "timestamp_end", timestamp_end);
- if (ret) {
- goto end;
- }
-
- ret = set_structure_field_integer(stream_class->packet_context,
- "events_discarded", stream->events_discarded);
- if (ret) {
- goto end;
- }
-
- ret = set_structure_field_integer(stream_class->packet_context,
- "content_size", UINT64_MAX);
- if (ret) {
- goto end;
- }
-
- ret = set_structure_field_integer(stream_class->packet_context,
- "packet_size", UINT64_MAX);
- if (ret) {
- goto end;
- }
-
- /* Write packet context */
- memcpy(&packet_context_pos, &stream->pos,
- sizeof(struct ctf_stream_pos));
- ret = bt_ctf_field_serialize(stream_class->packet_context,
- &stream->pos);
- if (ret) {
- goto end;
- }
-
- for (i = 0; i < stream->events->len; i++) {
- struct bt_ctf_event *event = g_ptr_array_index(
- stream->events, i);
- uint32_t event_id = bt_ctf_event_class_get_id(
- event->event_class);
- uint64_t timestamp = bt_ctf_event_get_timestamp(event);
-
- ret = set_structure_field_integer(stream_class->event_header,
- "id", event_id);
- if (ret) {
- goto end;
- }
- ret = set_structure_field_integer(stream_class->event_header,
- "timestamp", timestamp);
- if (ret) {
- goto end;
- }
-
- /* Write event header */
- ret = bt_ctf_field_serialize(stream_class->event_header,
- &stream->pos);
- if (ret) {
- goto end;
- }
-
- /* Write event content */
- ret = bt_ctf_event_serialize(event, &stream->pos);
- if (ret) {
- goto end;
- }
- }
-
- /*
- * Update the packet total size and content size and overwrite the
- * packet context.
- * Copy base_mma as the packet may have been remapped (e.g. when a
- * packet is resized).
- */
- packet_context_pos.base_mma = stream->pos.base_mma;
- ret = set_structure_field_integer(stream_class->packet_context,
- "content_size", stream->pos.offset);
- if (ret) {
- goto end;
- }
-
- ret = set_structure_field_integer(stream_class->packet_context,
- "packet_size", stream->pos.packet_size);
- if (ret) {
- goto end;
- }
-
- ret = bt_ctf_field_serialize(stream_class->packet_context,
- &packet_context_pos);
- if (ret) {
- goto end;
- }
-
- g_ptr_array_set_size(stream->events, 0);
- stream->flushed_packet_count++;
-end:
- bt_ctf_field_put(integer);
- return ret;
-}
-
-void bt_ctf_stream_get(struct bt_ctf_stream *stream)
-{
- if (!stream) {
- return;
- }
-
- bt_ctf_ref_get(&stream->ref_count);
-}
-
-void bt_ctf_stream_put(struct bt_ctf_stream *stream)
-{
- if (!stream) {
- return;
- }
-
- bt_ctf_ref_put(&stream->ref_count, bt_ctf_stream_destroy);
-}
-
-static
-void bt_ctf_stream_destroy(struct bt_ctf_ref *ref)
-{
- struct bt_ctf_stream *stream;
-
- if (!ref) {
- return;
- }
-
- stream = container_of(ref, struct bt_ctf_stream, ref_count);
- ctf_fini_pos(&stream->pos);
- if (close(stream->pos.fd)) {
- perror("close");
- }
- bt_ctf_stream_class_put(stream->stream_class);
- g_ptr_array_free(stream->events, TRUE);
- g_free(stream);
-}
-
-static
-int set_structure_field_integer(struct bt_ctf_field *structure, char *name,
- uint64_t value)
-{
- int ret = 0;
-
- struct bt_ctf_field *integer =
- bt_ctf_field_structure_get_field(structure, name);
- if (!integer) {
- ret = -1;
- goto end;
- }
-
- ret = bt_ctf_field_unsigned_integer_set_value(integer, value);
-end:
- bt_ctf_field_put(integer);
- return ret;
-}
projects / babeltrace.git / blobdiff