#include <stdlib.h>
#include <babeltrace/babeltrace.h>
-#include <babeltrace/callbacks-internal.h>
#include <babeltrace/context.h>
#include <babeltrace/context-internal.h>
-#include <babeltrace/ctf/metadata.h>
#include <babeltrace/iterator-internal.h>
#include <babeltrace/iterator.h>
#include <babeltrace/prio_heap.h>
+#include <babeltrace/ctf/metadata.h>
#include <babeltrace/ctf/events.h>
#include <inttypes.h>
+static int babeltrace_filestream_seek(struct ctf_file_stream *file_stream,
+ const struct bt_iter_pos *begin_pos,
+ unsigned long stream_id);
+
struct stream_saved_pos {
/*
* Use file_stream pointer to check if the trace collection we
struct ctf_file_stream *file_stream;
size_t cur_index; /* current index in packet index */
ssize_t offset; /* offset from base, in bits. EOF for end of file. */
- uint64_t current_timestamp;
+ uint64_t current_real_timestamp;
+ uint64_t current_cycles_timestamp;
};
struct bt_saved_pos {
/*
* returns true if a < b, false otherwise.
*/
-int stream_compare(void *a, void *b)
+static int stream_compare(void *a, void *b)
{
struct ctf_file_stream *s_a = a, *s_b = b;
- if (s_a->parent.timestamp < s_b->parent.timestamp)
+ if (s_a->parent.real_timestamp < s_b->parent.real_timestamp)
return 1;
else
return 0;
if (!iter_pos)
return;
- if (iter_pos->u.restore) {
+ if (iter_pos->type == BT_SEEK_RESTORE && iter_pos->u.restore) {
if (iter_pos->u.restore->stream_saved_pos) {
g_array_free(
iter_pos->u.restore->stream_saved_pos,
* are looking for (either the exact timestamp or the event just after the
* timestamp).
*
- * Return 0 if the seek succeded and EOF if we didn't find any packet
- * containing the timestamp.
+ * Return 0 if the seek succeded, EOF if we didn't find any packet
+ * containing the timestamp, or a positive integer for error.
+ *
+ * TODO: this should be turned into a binary search! It is currently
+ * doing a linear search in the packets. This is a O(n) operation on a
+ * very frequent code path.
*/
static int seek_file_stream_by_timestamp(struct ctf_file_stream *cfs,
uint64_t timestamp)
int i, ret;
stream_pos = &cfs->pos;
- for (i = 0; i < stream_pos->packet_index->len; i++) {
- index = &g_array_index(stream_pos->packet_index,
+ for (i = 0; i < stream_pos->packet_real_index->len; i++) {
+ index = &g_array_index(stream_pos->packet_real_index,
struct packet_index, i);
- if (index->timestamp_begin >= timestamp ||
- index->timestamp_end <= timestamp)
+ if (index->timestamp_end < timestamp)
continue;
stream_pos->packet_seek(&stream_pos->parent, i, SEEK_SET);
- while (cfs->parent.timestamp < timestamp) {
+ do {
ret = stream_read_event(cfs);
- if (ret < 0)
- break;
- }
- return 0;
+ } while (cfs->parent.real_timestamp < timestamp && ret == 0);
+
+ /* Can return either EOF, 0, or error (> 0). */
+ return ret;
}
+ /*
+ * Cannot find the timestamp within the stream packets, return
+ * EOF.
+ */
return EOF;
}
*
* Return 0 on success.
* If the timestamp is not part of any file stream, return EOF to inform the
- * user the timestamp is out of the scope
+ * user the timestamp is out of the scope.
+ * On other errors, return positive value.
*/
static int seek_ctf_trace_by_timestamp(struct ctf_trace *tin,
uint64_t timestamp, struct ptr_heap *stream_heap)
{
int i, j, ret;
- int found = EOF;
+ int found = 0;
/* for each stream_class */
for (i = 0; i < tin->streams->len; i++) {
- struct ctf_stream_class *stream_class;
+ struct ctf_stream_declaration *stream_class;
stream_class = g_ptr_array_index(tin->streams, i);
+ if (!stream_class)
+ continue;
/* for each file_stream */
for (j = 0; j < stream_class->streams->len; j++) {
- struct ctf_stream *stream;
+ struct ctf_stream_definition *stream;
struct ctf_file_stream *cfs;
stream = g_ptr_array_index(stream_class->streams, j);
+ if (!stream)
+ continue;
cfs = container_of(stream, struct ctf_file_stream,
parent);
ret = seek_file_stream_by_timestamp(cfs, timestamp);
if (ret == 0) {
/* Add to heap */
ret = heap_insert(stream_heap, cfs);
- if (ret)
- goto error;
- found = 0;
+ if (ret) {
+ /* Return positive error. */
+ return -ret;
+ }
+ found = 1;
+ } else if (ret > 0) {
+ /*
+ * Error in seek (not EOF), failure.
+ */
+ return ret;
}
+ /* on EOF just do not put stream into heap. */
}
}
- return found;
+ return found ? 0 : EOF;
+}
-error:
- return -2;
+/*
+ * Find timestamp of last event in the stream.
+ *
+ * Return value: 0 if OK, positive error value on error, EOF if no
+ * events were found.
+ */
+static int find_max_timestamp_ctf_file_stream(struct ctf_file_stream *cfs,
+ uint64_t *timestamp_end)
+{
+ int ret, count = 0, i;
+ uint64_t timestamp = 0;
+ struct ctf_stream_pos *stream_pos;
+
+ stream_pos = &cfs->pos;
+ /*
+ * We start by the last packet, and iterate backwards until we
+ * either find at least one event, or we reach the first packet
+ * (some packets can be empty).
+ */
+ for (i = stream_pos->packet_real_index->len - 1; i >= 0; i--) {
+ stream_pos->packet_seek(&stream_pos->parent, i, SEEK_SET);
+ count = 0;
+ /* read each event until we reach the end of the stream */
+ do {
+ ret = stream_read_event(cfs);
+ if (ret == 0) {
+ count++;
+ timestamp = cfs->parent.real_timestamp;
+ }
+ } while (ret == 0);
+
+ /* Error */
+ if (ret > 0)
+ goto end;
+ assert(ret == EOF);
+ if (count)
+ break;
+ }
+
+ if (count) {
+ *timestamp_end = timestamp;
+ ret = 0;
+ } else {
+ /* Return EOF if no events were found */
+ ret = EOF;
+ }
+end:
+ return ret;
+}
+
+/*
+ * Find the stream within a stream class that contains the event with
+ * the largest timestamp, and save that timestamp.
+ *
+ * Return 0 if OK, EOF if no events were found in the streams, or
+ * positive value on error.
+ */
+static int find_max_timestamp_ctf_stream_class(
+ struct ctf_stream_declaration *stream_class,
+ struct ctf_file_stream **cfsp,
+ uint64_t *max_timestamp)
+{
+ int ret = EOF, i;
+
+ for (i = 0; i < stream_class->streams->len; i++) {
+ struct ctf_stream_definition *stream;
+ struct ctf_file_stream *cfs;
+ uint64_t current_max_ts = 0;
+
+ stream = g_ptr_array_index(stream_class->streams, i);
+ if (!stream)
+ continue;
+ cfs = container_of(stream, struct ctf_file_stream, parent);
+ ret = find_max_timestamp_ctf_file_stream(cfs, ¤t_max_ts);
+ if (ret == EOF)
+ continue;
+ if (ret != 0)
+ break;
+ if (current_max_ts >= *max_timestamp) {
+ *max_timestamp = current_max_ts;
+ *cfsp = cfs;
+ }
+ }
+ assert(ret >= 0 || ret == EOF);
+ return ret;
+}
+
+/*
+ * seek_last_ctf_trace_collection: seek trace collection to last event.
+ *
+ * Return 0 if OK, EOF if no events were found, or positive error value
+ * on error.
+ */
+static int seek_last_ctf_trace_collection(struct trace_collection *tc,
+ struct ctf_file_stream **cfsp)
+{
+ int i, j, ret;
+ int found = 0;
+ uint64_t max_timestamp = 0;
+
+ if (!tc)
+ return 1;
+
+ /* For each trace in the trace_collection */
+ for (i = 0; i < tc->array->len; i++) {
+ struct ctf_trace *tin;
+ struct trace_descriptor *td_read;
+
+ td_read = g_ptr_array_index(tc->array, i);
+ if (!td_read)
+ continue;
+ tin = container_of(td_read, struct ctf_trace, parent);
+ /* For each stream_class in the trace */
+ for (j = 0; j < tin->streams->len; j++) {
+ struct ctf_stream_declaration *stream_class;
+
+ stream_class = g_ptr_array_index(tin->streams, j);
+ if (!stream_class)
+ continue;
+ ret = find_max_timestamp_ctf_stream_class(stream_class,
+ cfsp, &max_timestamp);
+ if (ret > 0)
+ goto end;
+ if (ret == 0)
+ found = 1;
+ assert(ret == EOF || ret == 0);
+ }
+ }
+ /*
+ * Now we know in which file stream the last event is located,
+ * and we know its timestamp.
+ */
+ if (!found) {
+ ret = EOF;
+ } else {
+ ret = seek_file_stream_by_timestamp(*cfsp, max_timestamp);
+ assert(ret == 0);
+ }
+end:
+ return ret;
}
int bt_iter_set_pos(struct bt_iter *iter, const struct bt_iter_pos *iter_pos)
struct trace_collection *tc;
int i, ret;
+ if (!iter || !iter_pos)
+ return -EINVAL;
+
switch (iter_pos->type) {
case BT_SEEK_RESTORE:
if (!iter_pos->u.restore)
- goto error_arg;
+ return -EINVAL;
heap_free(iter->stream_heap);
ret = heap_init(iter->stream_heap, 0, stream_compare);
if (ret < 0)
- goto error;
+ goto error_heap_init;
for (i = 0; i < iter_pos->u.restore->stream_saved_pos->len;
i++) {
struct stream_saved_pos *saved_pos;
struct ctf_stream_pos *stream_pos;
- struct ctf_stream *stream;
+ struct ctf_stream_definition *stream;
saved_pos = &g_array_index(
iter_pos->u.restore->stream_saved_pos,
* packet_seek, because this function resets
* the timestamp to the beginning of the packet
*/
- stream->timestamp = saved_pos->current_timestamp;
+ stream->real_timestamp = saved_pos->current_real_timestamp;
+ stream->cycles_timestamp = saved_pos->current_cycles_timestamp;
stream_pos->offset = saved_pos->offset;
- stream_pos->last_offset = saved_pos->offset;
+ stream_pos->last_offset = LAST_OFFSET_POISON;
- stream->prev_timestamp = 0;
- stream->prev_timestamp_end = 0;
- stream->consumed = 0;
+ stream->prev_real_timestamp = 0;
+ stream->prev_real_timestamp_end = 0;
+ stream->prev_cycles_timestamp = 0;
+ stream->prev_cycles_timestamp_end = 0;
printf_debug("restored to cur_index = %zd and "
"offset = %zd, timestamp = %" PRIu64 "\n",
stream_pos->cur_index,
- stream_pos->offset, stream->timestamp);
+ stream_pos->offset, stream->real_timestamp);
- stream_read_event(saved_pos->file_stream);
+ ret = stream_read_event(saved_pos->file_stream);
+ if (ret != 0) {
+ goto error;
+ }
/* Add to heap */
ret = heap_insert(iter->stream_heap,
if (ret)
goto error;
}
+ return 0;
case BT_SEEK_TIME:
tc = iter->ctx->tc;
- if (!iter_pos->u.seek_time)
- goto error_arg;
-
heap_free(iter->stream_heap);
ret = heap_init(iter->stream_heap, 0, stream_compare);
if (ret < 0)
- goto error;
+ goto error_heap_init;
/* for each trace in the trace_collection */
for (i = 0; i < tc->array->len; i++) {
struct trace_descriptor *td_read;
td_read = g_ptr_array_index(tc->array, i);
+ if (!td_read)
+ continue;
tin = container_of(td_read, struct ctf_trace, parent);
ret = seek_ctf_trace_by_timestamp(tin,
iter_pos->u.seek_time,
iter->stream_heap);
- if (ret < 0)
+ /*
+ * Positive errors are failure. Negative value
+ * is EOF (for which we continue with other
+ * traces). 0 is success. Note: on EOF, it just
+ * means that no stream has been added to the
+ * iterator for that trace, which is fine.
+ */
+ if (ret != 0 && ret != EOF)
goto error;
}
return 0;
+ case BT_SEEK_BEGIN:
+ tc = iter->ctx->tc;
+ heap_free(iter->stream_heap);
+ ret = heap_init(iter->stream_heap, 0, stream_compare);
+ if (ret < 0)
+ goto error_heap_init;
+
+ for (i = 0; i < tc->array->len; i++) {
+ struct ctf_trace *tin;
+ struct trace_descriptor *td_read;
+ int stream_id;
+
+ td_read = g_ptr_array_index(tc->array, i);
+ if (!td_read)
+ continue;
+ tin = container_of(td_read, struct ctf_trace, parent);
+
+ /* Populate heap with each stream */
+ for (stream_id = 0; stream_id < tin->streams->len;
+ stream_id++) {
+ struct ctf_stream_declaration *stream;
+ int filenr;
+
+ stream = g_ptr_array_index(tin->streams,
+ stream_id);
+ if (!stream)
+ continue;
+ for (filenr = 0; filenr < stream->streams->len;
+ filenr++) {
+ struct ctf_file_stream *file_stream;
+ file_stream = g_ptr_array_index(
+ stream->streams,
+ filenr);
+ if (!file_stream)
+ continue;
+ ret = babeltrace_filestream_seek(
+ file_stream, iter_pos,
+ stream_id);
+ if (ret != 0 && ret != EOF) {
+ goto error;
+ }
+ ret = heap_insert(iter->stream_heap, file_stream);
+ if (ret)
+ goto error;
+ }
+ }
+ }
+ break;
+ case BT_SEEK_LAST:
+ {
+ struct ctf_file_stream *cfs = NULL;
+
+ tc = iter->ctx->tc;
+ ret = seek_last_ctf_trace_collection(tc, &cfs);
+ if (ret != 0 || !cfs)
+ goto error;
+ /* remove all streams from the heap */
+ heap_free(iter->stream_heap);
+ /* Create a new empty heap */
+ ret = heap_init(iter->stream_heap, 0, stream_compare);
+ if (ret < 0)
+ goto error;
+ /* Insert the stream that contains the last event */
+ ret = heap_insert(iter->stream_heap, cfs);
+ if (ret)
+ goto error;
+ break;
+ }
default:
/* not implemented */
- goto error_arg;
+ return -EINVAL;
}
return 0;
-error_arg:
- ret = -EINVAL;
error:
heap_free(iter->stream_heap);
+error_heap_init:
if (heap_init(iter->stream_heap, 0, stream_compare) < 0) {
heap_free(iter->stream_heap);
g_free(iter->stream_heap);
iter->stream_heap = NULL;
ret = -ENOMEM;
}
+
return ret;
}
struct bt_iter_pos *bt_iter_get_pos(struct bt_iter *iter)
{
struct bt_iter_pos *pos;
- struct trace_collection *tc = iter->ctx->tc;
- int i, stream_class_id, stream_id;
+ struct trace_collection *tc;
+ struct ctf_file_stream *file_stream = NULL, *removed;
+ struct ptr_heap iter_heap_copy;
+ int ret;
+ if (!iter)
+ return NULL;
+
+ tc = iter->ctx->tc;
pos = g_new0(struct bt_iter_pos, 1);
+ pos->type = BT_SEEK_RESTORE;
pos->u.restore = g_new0(struct bt_saved_pos, 1);
pos->u.restore->tc = tc;
pos->u.restore->stream_saved_pos = g_array_new(FALSE, TRUE,
if (!pos->u.restore->stream_saved_pos)
goto error;
- for (i = 0; i < tc->array->len; i++) {
- struct ctf_trace *tin;
- struct trace_descriptor *td_read;
-
- td_read = g_ptr_array_index(tc->array, i);
- tin = container_of(td_read, struct ctf_trace, parent);
-
- for (stream_class_id = 0; stream_class_id < tin->streams->len;
- stream_class_id++) {
- struct ctf_stream_class *stream_class;
-
- stream_class = g_ptr_array_index(tin->streams,
- stream_class_id);
- for (stream_id = 0;
- stream_id < stream_class->streams->len;
- stream_id++) {
- struct ctf_stream *stream;
- struct ctf_file_stream *cfs;
- struct stream_saved_pos saved_pos;
-
- stream = g_ptr_array_index(
- stream_class->streams,
- stream_id);
- cfs = container_of(stream,
- struct ctf_file_stream,
- parent);
-
- saved_pos.file_stream = cfs;
- saved_pos.cur_index = cfs->pos.cur_index;
+ ret = heap_copy(&iter_heap_copy, iter->stream_heap);
+ if (ret < 0)
+ goto error_heap;
+
+ /* iterate over each stream in the heap */
+ file_stream = heap_maximum(&iter_heap_copy);
+ while (file_stream != NULL) {
+ struct stream_saved_pos saved_pos;
+
+ assert(file_stream->pos.last_offset != LAST_OFFSET_POISON);
+ saved_pos.offset = file_stream->pos.last_offset;
+ saved_pos.file_stream = file_stream;
+ saved_pos.cur_index = file_stream->pos.cur_index;
+
+ saved_pos.current_real_timestamp = file_stream->parent.real_timestamp;
+ saved_pos.current_cycles_timestamp = file_stream->parent.cycles_timestamp;
+
+ g_array_append_val(
+ pos->u.restore->stream_saved_pos,
+ saved_pos);
+
+ printf_debug("stream : %" PRIu64 ", cur_index : %zd, "
+ "offset : %zd, "
+ "timestamp = %" PRIu64 "\n",
+ file_stream->parent.stream_id,
+ saved_pos.cur_index, saved_pos.offset,
+ saved_pos.current_real_timestamp);
+
+ /* remove the stream from the heap copy */
+ removed = heap_remove(&iter_heap_copy);
+ assert(removed == file_stream);
- /*
- * It is possible that an event was read during
- * the last restore, never consumed and its
- * position saved again. For this case, we
- * need to check if the event really was
- * consumed by the caller otherwise it is lost.
- */
- if (stream->consumed)
- saved_pos.offset = cfs->pos.offset;
- else
- saved_pos.offset = cfs->pos.last_offset;
-
- saved_pos.current_timestamp = stream->timestamp;
-
- g_array_append_val(
- pos->u.restore->stream_saved_pos,
- saved_pos);
-
- printf_debug("stream : %" PRIu64 ", cur_index : %zd, "
- "offset : %zd, "
- "timestamp = %" PRIu64 "\n",
- stream->stream_id, saved_pos.cur_index,
- saved_pos.offset,
- saved_pos.current_timestamp);
- }
- }
+ file_stream = heap_maximum(&iter_heap_copy);
}
-
+ heap_free(&iter_heap_copy);
return pos;
+error_heap:
+ g_array_free(pos->u.restore->stream_saved_pos, TRUE);
error:
+ g_free(pos);
return NULL;
}
{
struct bt_iter_pos *pos;
+ if (!iter)
+ return NULL;
+
pos = g_new0(struct bt_iter_pos, 1);
pos->type = BT_SEEK_TIME;
pos->u.seek_time = timestamp;
{
int ret = 0;
+ if (!file_stream || !begin_pos)
+ return -EINVAL;
+
switch (begin_pos->type) {
case BT_SEEK_CUR:
/*
break;
case BT_SEEK_TIME:
case BT_SEEK_RESTORE:
- case BT_SEEK_END:
default:
assert(0); /* Not yet defined */
}
return ret;
}
-/*
- * bt_iter_seek: seek iterator to given position.
- */
-int bt_iter_seek(struct bt_iter *iter,
- const struct bt_iter_pos *begin_pos)
+int bt_iter_init(struct bt_iter *iter,
+ struct bt_context *ctx,
+ const struct bt_iter_pos *begin_pos,
+ const struct bt_iter_pos *end_pos)
{
int i, stream_id;
int ret = 0;
- struct trace_collection *tc = iter->ctx->tc;
- for (i = 0; i < tc->array->len; i++) {
- struct ctf_trace *tin;
- struct trace_descriptor *td_read;
-
- td_read = g_ptr_array_index(tc->array, i);
- tin = container_of(td_read, struct ctf_trace, parent);
+ if (!iter || !ctx)
+ return -EINVAL;
- /* Populate heap with each stream */
- for (stream_id = 0; stream_id < tin->streams->len;
- stream_id++) {
- struct ctf_stream_class *stream;
- int filenr;
-
- stream = g_ptr_array_index(tin->streams, stream_id);
- for (filenr = 0; filenr < stream->streams->len;
- filenr++) {
- struct ctf_file_stream *file_stream;
-
- file_stream = g_ptr_array_index(stream->streams,
- filenr);
- ret = babeltrace_filestream_seek(file_stream, begin_pos,
- stream_id);
- if (ret < 0)
- goto end;
- }
- }
+ if (ctx->current_iterator) {
+ ret = -1;
+ goto error_ctx;
}
-end:
- return ret;
-}
-
-struct bt_iter *bt_iter_create(struct bt_context *ctx,
- struct bt_iter_pos *begin_pos,
- struct bt_iter_pos *end_pos)
-{
- int i, stream_id;
- int ret = 0;
- struct bt_iter *iter;
- iter = g_new0(struct bt_iter, 1);
iter->stream_heap = g_new(struct ptr_heap, 1);
iter->end_pos = end_pos;
- iter->callbacks = g_array_new(0, 1, sizeof(struct bt_stream_callbacks));
- iter->recalculate_dep_graph = 0;
- iter->main_callbacks.callback = NULL;
- iter->dep_gc = g_ptr_array_new();
bt_context_get(ctx);
iter->ctx = ctx;
struct trace_descriptor *td_read;
td_read = g_ptr_array_index(ctx->tc->array, i);
+ if (!td_read)
+ continue;
tin = container_of(td_read, struct ctf_trace, parent);
/* Populate heap with each stream */
for (stream_id = 0; stream_id < tin->streams->len;
stream_id++) {
- struct ctf_stream_class *stream;
+ struct ctf_stream_declaration *stream;
int filenr;
stream = g_ptr_array_index(tin->streams, stream_id);
file_stream = g_ptr_array_index(stream->streams,
filenr);
-
+ if (!file_stream)
+ continue;
if (begin_pos) {
- ret = babeltrace_filestream_seek(file_stream, begin_pos,
+ ret = babeltrace_filestream_seek(
+ file_stream,
+ begin_pos,
+ stream_id);
+ } else {
+ struct bt_iter_pos pos;
+ pos.type = BT_SEEK_BEGIN;
+ ret = babeltrace_filestream_seek(
+ file_stream, &pos,
stream_id);
- if (ret == EOF) {
- ret = 0;
- continue;
- } else if (ret) {
- goto error;
- }
+ }
+ if (ret == EOF) {
+ ret = 0;
+ continue;
+ } else if (ret) {
+ goto error;
}
/* Add to heap */
ret = heap_insert(iter->stream_heap, file_stream);
}
}
- return iter;
+ ctx->current_iterator = iter;
+ return 0;
error:
heap_free(iter->stream_heap);
error_heap_init:
g_free(iter->stream_heap);
- g_free(iter);
- return NULL;
+ iter->stream_heap = NULL;
+error_ctx:
+ return ret;
}
-void bt_iter_destroy(struct bt_iter *iter)
+struct bt_iter *bt_iter_create(struct bt_context *ctx,
+ const struct bt_iter_pos *begin_pos,
+ const struct bt_iter_pos *end_pos)
{
- struct bt_stream_callbacks *bt_stream_cb;
- struct bt_callback_chain *bt_chain;
- int i, j;
+ struct bt_iter *iter;
+ int ret;
+
+ if (!ctx)
+ return NULL;
+
+ iter = g_new0(struct bt_iter, 1);
+ ret = bt_iter_init(iter, ctx, begin_pos, end_pos);
+ if (ret) {
+ g_free(iter);
+ return NULL;
+ }
+ return iter;
+}
+void bt_iter_fini(struct bt_iter *iter)
+{
+ assert(iter);
if (iter->stream_heap) {
heap_free(iter->stream_heap);
g_free(iter->stream_heap);
}
-
- /* free all events callbacks */
- if (iter->main_callbacks.callback)
- g_array_free(iter->main_callbacks.callback, TRUE);
-
- /* free per-event callbacks */
- for (i = 0; i < iter->callbacks->len; i++) {
- bt_stream_cb = &g_array_index(iter->callbacks,
- struct bt_stream_callbacks, i);
- if (!bt_stream_cb || !bt_stream_cb->per_id_callbacks)
- continue;
- for (j = 0; j < bt_stream_cb->per_id_callbacks->len; j++) {
- bt_chain = &g_array_index(bt_stream_cb->per_id_callbacks,
- struct bt_callback_chain, j);
- if (bt_chain->callback) {
- g_array_free(bt_chain->callback, TRUE);
- }
- }
- g_array_free(bt_stream_cb->per_id_callbacks, TRUE);
- }
-
+ iter->ctx->current_iterator = NULL;
bt_context_put(iter->ctx);
+}
+void bt_iter_destroy(struct bt_iter *iter)
+{
+ assert(iter);
+ bt_iter_fini(iter);
g_free(iter);
}
struct ctf_file_stream *file_stream, *removed;
int ret;
+ if (!iter)
+ return -EINVAL;
+
file_stream = heap_maximum(iter->stream_heap);
if (!file_stream) {
/* end of file for all streams */
end:
return ret;
}
-
-struct bt_ctf_event *bt_iter_read_ctf_event(struct bt_iter *iter)
-{
- struct ctf_file_stream *file_stream;
- struct bt_ctf_event *ret = &iter->current_ctf_event;
-
- file_stream = heap_maximum(iter->stream_heap);
- if (!file_stream) {
- /* end of file for all streams */
- goto stop;
- }
- ret->stream = &file_stream->parent;
- ret->event = g_ptr_array_index(ret->stream->events_by_id,
- ret->stream->event_id);
-
- if (ret->stream->stream_id > iter->callbacks->len)
- goto end;
-
- process_callbacks(iter, ret->stream);
-
-end:
- return ret;
-stop:
- return NULL;
-}
projects / babeltrace.git / blobdiff