*/
#define BT_COMP_LOG_SELF_COMP self_comp
-#define BT_LOG_OUTPUT_LEVEL log_level
-#define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/DS"
+#define BT_LOG_OUTPUT_LEVEL log_level
+#define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/DS"
#include "logging/comp-logging.h"
#include <inttypes.h>
#include "compat/mman.h"
#include "data-stream.hpp"
-#define STREAM_NAME_PREFIX "stream-"
+#define STREAM_NAME_PREFIX "stream-"
-static
-enum ctf_msg_iter_medium_status medop_request_bytes(
- size_t request_sz, uint8_t **buffer_addr,
- size_t *buffer_sz, void *data)
+static enum ctf_msg_iter_medium_status medop_request_bytes(size_t request_sz, uint8_t **buffer_addr,
+ size_t *buffer_sz, void *data)
{
- enum ctf_msg_iter_medium_status status =
- CTF_MSG_ITER_MEDIUM_STATUS_OK;
- lttng_live_stream_iterator *stream = (lttng_live_stream_iterator *) data;
- struct lttng_live_trace *trace = stream->trace;
- struct lttng_live_session *session = trace->session;
- struct lttng_live_msg_iter *live_msg_iter = session->lttng_live_msg_iter;
- uint64_t recv_len = 0;
- uint64_t len_left;
- uint64_t read_len;
-
- BT_ASSERT(request_sz);
-
- if (stream->has_stream_hung_up) {
- status = CTF_MSG_ITER_MEDIUM_STATUS_EOF;
- goto end;
- }
-
- len_left = stream->base_offset + stream->len - stream->offset;
- if (!len_left) {
- lttng_live_stream_iterator_set_state(stream,
- LTTNG_LIVE_STREAM_ACTIVE_NO_DATA);
- status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN;
- goto end;
- }
-
- read_len = MIN(request_sz, stream->buflen);
- read_len = MIN(read_len, len_left);
- status = lttng_live_get_stream_bytes(live_msg_iter,
- stream, stream->buf, stream->offset,
- read_len, &recv_len);
- *buffer_addr = stream->buf;
- *buffer_sz = recv_len;
- stream->offset += recv_len;
+ enum ctf_msg_iter_medium_status status = CTF_MSG_ITER_MEDIUM_STATUS_OK;
+ lttng_live_stream_iterator *stream = (lttng_live_stream_iterator *) data;
+ struct lttng_live_trace *trace = stream->trace;
+ struct lttng_live_session *session = trace->session;
+ struct lttng_live_msg_iter *live_msg_iter = session->lttng_live_msg_iter;
+ uint64_t recv_len = 0;
+ uint64_t len_left;
+ uint64_t read_len;
+
+ BT_ASSERT(request_sz);
+
+ if (stream->has_stream_hung_up) {
+ status = CTF_MSG_ITER_MEDIUM_STATUS_EOF;
+ goto end;
+ }
+
+ len_left = stream->base_offset + stream->len - stream->offset;
+ if (!len_left) {
+ lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA);
+ status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN;
+ goto end;
+ }
+
+ read_len = MIN(request_sz, stream->buflen);
+ read_len = MIN(read_len, len_left);
+ status = lttng_live_get_stream_bytes(live_msg_iter, stream, stream->buf, stream->offset,
+ read_len, &recv_len);
+ *buffer_addr = stream->buf;
+ *buffer_sz = recv_len;
+ stream->offset += recv_len;
end:
- return status;
+ return status;
}
-static
-bt_stream *medop_borrow_stream(bt_stream_class *stream_class,
- int64_t stream_id, void *data)
+static bt_stream *medop_borrow_stream(bt_stream_class *stream_class, int64_t stream_id, void *data)
{
- lttng_live_stream_iterator *lttng_live_stream = (lttng_live_stream_iterator *) data;
- bt_logging_level log_level = lttng_live_stream->log_level;
- bt_self_component *self_comp = lttng_live_stream->self_comp;
-
- if (!lttng_live_stream->stream) {
- uint64_t stream_class_id = bt_stream_class_get_id(stream_class);
-
- BT_COMP_LOGI("Creating stream %s (ID: %" PRIu64 ") out of stream "
- "class %" PRId64, lttng_live_stream->name->str,
- stream_id, stream_class_id);
-
- if (stream_id < 0) {
- /*
- * No stream instance ID in the stream. It's possible
- * to encounter this situation with older version of
- * LTTng. In these cases, use the viewer_stream_id that
- * is unique for a live viewer session.
- */
- lttng_live_stream->stream = bt_stream_create_with_id(
- stream_class, lttng_live_stream->trace->trace,
- lttng_live_stream->viewer_stream_id);
- } else {
- lttng_live_stream->stream = bt_stream_create_with_id(
- stream_class, lttng_live_stream->trace->trace,
- (uint64_t) stream_id);
- }
-
- if (!lttng_live_stream->stream) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Cannot create stream %s (stream class ID "
- "%" PRId64 ", stream ID %" PRIu64 ")",
- lttng_live_stream->name->str,
- stream_class_id, stream_id);
- goto end;
- }
-
- bt_stream_set_name(lttng_live_stream->stream,
- lttng_live_stream->name->str);
- }
+ lttng_live_stream_iterator *lttng_live_stream = (lttng_live_stream_iterator *) data;
+ bt_logging_level log_level = lttng_live_stream->log_level;
+ bt_self_component *self_comp = lttng_live_stream->self_comp;
+
+ if (!lttng_live_stream->stream) {
+ uint64_t stream_class_id = bt_stream_class_get_id(stream_class);
+
+ BT_COMP_LOGI("Creating stream %s (ID: %" PRIu64 ") out of stream "
+ "class %" PRId64,
+ lttng_live_stream->name->str, stream_id, stream_class_id);
+
+ if (stream_id < 0) {
+ /*
+ * No stream instance ID in the stream. It's possible
+ * to encounter this situation with older version of
+ * LTTng. In these cases, use the viewer_stream_id that
+ * is unique for a live viewer session.
+ */
+ lttng_live_stream->stream = bt_stream_create_with_id(
+ stream_class, lttng_live_stream->trace->trace, lttng_live_stream->viewer_stream_id);
+ } else {
+ lttng_live_stream->stream = bt_stream_create_with_id(
+ stream_class, lttng_live_stream->trace->trace, (uint64_t) stream_id);
+ }
+
+ if (!lttng_live_stream->stream) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Cannot create stream %s (stream class ID "
+ "%" PRId64 ", stream ID %" PRIu64 ")",
+ lttng_live_stream->name->str, stream_class_id, stream_id);
+ goto end;
+ }
+
+ bt_stream_set_name(lttng_live_stream->stream, lttng_live_stream->name->str);
+ }
end:
- return lttng_live_stream->stream;
+ return lttng_live_stream->stream;
}
static struct ctf_msg_iter_medium_ops medops = {
- medop_request_bytes,
- nullptr,
- nullptr,
- medop_borrow_stream,
+ medop_request_bytes,
+ nullptr,
+ nullptr,
+ medop_borrow_stream,
};
BT_HIDDEN
-enum lttng_live_iterator_status lttng_live_lazy_msg_init(
- struct lttng_live_session *session,
- bt_self_message_iterator *self_msg_iter)
+enum lttng_live_iterator_status lttng_live_lazy_msg_init(struct lttng_live_session *session,
+ bt_self_message_iterator *self_msg_iter)
{
- struct lttng_live_component *lttng_live =
- session->lttng_live_msg_iter->lttng_live_comp;
- uint64_t trace_idx, stream_iter_idx;
- bt_logging_level log_level = session->log_level;
- bt_self_component *self_comp = session->self_comp;
-
- if (!session->lazy_stream_msg_init) {
- return LTTNG_LIVE_ITERATOR_STATUS_OK;
- }
-
- BT_COMP_LOGD("Lazily initializing self message iterator for live session: "
- "session-id=%" PRIu64 ", self-msg-iter-addr=%p", session->id,
- self_msg_iter);
-
- for (trace_idx = 0; trace_idx < session->traces->len; trace_idx++) {
- struct lttng_live_trace *trace =
- (lttng_live_trace *) g_ptr_array_index(session->traces, trace_idx);
-
- for (stream_iter_idx = 0;
- stream_iter_idx < trace->stream_iterators->len;
- stream_iter_idx++) {
- struct ctf_trace_class *ctf_tc;
- struct lttng_live_stream_iterator *stream_iter =
- (lttng_live_stream_iterator *) g_ptr_array_index(trace->stream_iterators,
- stream_iter_idx);
-
- if (stream_iter->msg_iter) {
- continue;
- }
- ctf_tc = ctf_metadata_decoder_borrow_ctf_trace_class(
- trace->metadata->decoder);
- BT_COMP_LOGD("Creating CTF message iterator: "
- "session-id=%" PRIu64 ", ctf-tc-addr=%p, "
- "stream-iter-name=%s, self-msg-iter-addr=%p",
- session->id, ctf_tc, stream_iter->name->str, self_msg_iter);
- stream_iter->msg_iter = ctf_msg_iter_create(ctf_tc,
- lttng_live->max_query_size, medops, stream_iter,
- log_level, self_comp, self_msg_iter);
- if (!stream_iter->msg_iter) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Failed to create CTF message iterator");
- goto error;
- }
- }
- }
-
- session->lazy_stream_msg_init = false;
-
- return LTTNG_LIVE_ITERATOR_STATUS_OK;
+ struct lttng_live_component *lttng_live = session->lttng_live_msg_iter->lttng_live_comp;
+ uint64_t trace_idx, stream_iter_idx;
+ bt_logging_level log_level = session->log_level;
+ bt_self_component *self_comp = session->self_comp;
+
+ if (!session->lazy_stream_msg_init) {
+ return LTTNG_LIVE_ITERATOR_STATUS_OK;
+ }
+
+ BT_COMP_LOGD("Lazily initializing self message iterator for live session: "
+ "session-id=%" PRIu64 ", self-msg-iter-addr=%p",
+ session->id, self_msg_iter);
+
+ for (trace_idx = 0; trace_idx < session->traces->len; trace_idx++) {
+ struct lttng_live_trace *trace =
+ (lttng_live_trace *) g_ptr_array_index(session->traces, trace_idx);
+
+ for (stream_iter_idx = 0; stream_iter_idx < trace->stream_iterators->len;
+ stream_iter_idx++) {
+ struct ctf_trace_class *ctf_tc;
+ struct lttng_live_stream_iterator *stream_iter =
+ (lttng_live_stream_iterator *) g_ptr_array_index(trace->stream_iterators,
+ stream_iter_idx);
+
+ if (stream_iter->msg_iter) {
+ continue;
+ }
+ ctf_tc = ctf_metadata_decoder_borrow_ctf_trace_class(trace->metadata->decoder);
+ BT_COMP_LOGD("Creating CTF message iterator: "
+ "session-id=%" PRIu64 ", ctf-tc-addr=%p, "
+ "stream-iter-name=%s, self-msg-iter-addr=%p",
+ session->id, ctf_tc, stream_iter->name->str, self_msg_iter);
+ stream_iter->msg_iter =
+ ctf_msg_iter_create(ctf_tc, lttng_live->max_query_size, medops, stream_iter,
+ log_level, self_comp, self_msg_iter);
+ if (!stream_iter->msg_iter) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Failed to create CTF message iterator");
+ goto error;
+ }
+ }
+ }
+
+ session->lazy_stream_msg_init = false;
+
+ return LTTNG_LIVE_ITERATOR_STATUS_OK;
error:
- return LTTNG_LIVE_ITERATOR_STATUS_ERROR;
+ return LTTNG_LIVE_ITERATOR_STATUS_ERROR;
}
BT_HIDDEN
-struct lttng_live_stream_iterator *lttng_live_stream_iterator_create(
- struct lttng_live_session *session,
- uint64_t ctf_trace_id,
- uint64_t stream_id,
- bt_self_message_iterator *self_msg_iter)
+struct lttng_live_stream_iterator *
+lttng_live_stream_iterator_create(struct lttng_live_session *session, uint64_t ctf_trace_id,
+ uint64_t stream_id, bt_self_message_iterator *self_msg_iter)
{
- struct lttng_live_stream_iterator *stream_iter;
- struct lttng_live_component *lttng_live;
- struct lttng_live_trace *trace;
- bt_logging_level log_level;
- bt_self_component *self_comp;
-
- BT_ASSERT(session);
- BT_ASSERT(session->lttng_live_msg_iter);
- BT_ASSERT(session->lttng_live_msg_iter->lttng_live_comp);
- log_level = session->log_level;
- self_comp = session->self_comp;
-
- lttng_live = session->lttng_live_msg_iter->lttng_live_comp;
-
- stream_iter = g_new0(struct lttng_live_stream_iterator, 1);
- if (!stream_iter) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Failed to allocate struct lttng_live_stream_iterator");
- goto error;
- }
-
- stream_iter->log_level = log_level;
- stream_iter->self_comp = self_comp;
- trace = lttng_live_session_borrow_or_create_trace_by_id(session, ctf_trace_id);
- if (!trace) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Failed to borrow CTF trace.");
- goto error;
- }
-
- stream_iter->trace = trace;
- stream_iter->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA;
- stream_iter->viewer_stream_id = stream_id;
-
- stream_iter->ctf_stream_class_id.is_set = false;
- stream_iter->ctf_stream_class_id.value = UINT64_MAX;
-
- stream_iter->last_inactivity_ts.is_set = false;
- stream_iter->last_inactivity_ts.value = 0;
-
- if (trace->trace) {
- struct ctf_trace_class *ctf_tc =
- ctf_metadata_decoder_borrow_ctf_trace_class(
- trace->metadata->decoder);
- BT_ASSERT(!stream_iter->msg_iter);
- stream_iter->msg_iter = ctf_msg_iter_create(ctf_tc,
- lttng_live->max_query_size, medops, stream_iter,
- log_level, self_comp, self_msg_iter);
- if (!stream_iter->msg_iter) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Failed to create CTF message iterator");
- goto error;
- }
- }
- stream_iter->buf = g_new0(uint8_t, lttng_live->max_query_size);
- if (!stream_iter->buf) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Failed to allocate live stream iterator buffer");
- goto error;
- }
-
- stream_iter->buflen = lttng_live->max_query_size;
- stream_iter->name = g_string_new(NULL);
- if (!stream_iter->name) {
- BT_COMP_LOGE_APPEND_CAUSE(self_comp,
- "Failed to allocate live stream iterator name buffer");
- goto error;
- }
-
- g_string_printf(stream_iter->name, STREAM_NAME_PREFIX "%" PRIu64,
- stream_iter->viewer_stream_id);
- g_ptr_array_add(trace->stream_iterators, stream_iter);
-
- /* Track the number of active stream iterator. */
- session->lttng_live_msg_iter->active_stream_iter++;
-
- goto end;
+ struct lttng_live_stream_iterator *stream_iter;
+ struct lttng_live_component *lttng_live;
+ struct lttng_live_trace *trace;
+ bt_logging_level log_level;
+ bt_self_component *self_comp;
+
+ BT_ASSERT(session);
+ BT_ASSERT(session->lttng_live_msg_iter);
+ BT_ASSERT(session->lttng_live_msg_iter->lttng_live_comp);
+ log_level = session->log_level;
+ self_comp = session->self_comp;
+
+ lttng_live = session->lttng_live_msg_iter->lttng_live_comp;
+
+ stream_iter = g_new0(struct lttng_live_stream_iterator, 1);
+ if (!stream_iter) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+ "Failed to allocate struct lttng_live_stream_iterator");
+ goto error;
+ }
+
+ stream_iter->log_level = log_level;
+ stream_iter->self_comp = self_comp;
+ trace = lttng_live_session_borrow_or_create_trace_by_id(session, ctf_trace_id);
+ if (!trace) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Failed to borrow CTF trace.");
+ goto error;
+ }
+
+ stream_iter->trace = trace;
+ stream_iter->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA;
+ stream_iter->viewer_stream_id = stream_id;
+
+ stream_iter->ctf_stream_class_id.is_set = false;
+ stream_iter->ctf_stream_class_id.value = UINT64_MAX;
+
+ stream_iter->last_inactivity_ts.is_set = false;
+ stream_iter->last_inactivity_ts.value = 0;
+
+ if (trace->trace) {
+ struct ctf_trace_class *ctf_tc =
+ ctf_metadata_decoder_borrow_ctf_trace_class(trace->metadata->decoder);
+ BT_ASSERT(!stream_iter->msg_iter);
+ stream_iter->msg_iter =
+ ctf_msg_iter_create(ctf_tc, lttng_live->max_query_size, medops, stream_iter, log_level,
+ self_comp, self_msg_iter);
+ if (!stream_iter->msg_iter) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Failed to create CTF message iterator");
+ goto error;
+ }
+ }
+ stream_iter->buf = g_new0(uint8_t, lttng_live->max_query_size);
+ if (!stream_iter->buf) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Failed to allocate live stream iterator buffer");
+ goto error;
+ }
+
+ stream_iter->buflen = lttng_live->max_query_size;
+ stream_iter->name = g_string_new(NULL);
+ if (!stream_iter->name) {
+ BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Failed to allocate live stream iterator name buffer");
+ goto error;
+ }
+
+ g_string_printf(stream_iter->name, STREAM_NAME_PREFIX "%" PRIu64,
+ stream_iter->viewer_stream_id);
+ g_ptr_array_add(trace->stream_iterators, stream_iter);
+
+ /* Track the number of active stream iterator. */
+ session->lttng_live_msg_iter->active_stream_iter++;
+
+ goto end;
error:
- lttng_live_stream_iterator_destroy(stream_iter);
- stream_iter = NULL;
+ lttng_live_stream_iterator_destroy(stream_iter);
+ stream_iter = NULL;
end:
- return stream_iter;
+ return stream_iter;
}
BT_HIDDEN
-void lttng_live_stream_iterator_destroy(
- struct lttng_live_stream_iterator *stream_iter)
+void lttng_live_stream_iterator_destroy(struct lttng_live_stream_iterator *stream_iter)
{
- if (!stream_iter) {
- return;
- }
+ if (!stream_iter) {
+ return;
+ }
- if (stream_iter->stream) {
- BT_STREAM_PUT_REF_AND_RESET(stream_iter->stream);
- }
+ if (stream_iter->stream) {
+ BT_STREAM_PUT_REF_AND_RESET(stream_iter->stream);
+ }
- if (stream_iter->msg_iter) {
- ctf_msg_iter_destroy(stream_iter->msg_iter);
- }
- g_free(stream_iter->buf);
- if (stream_iter->name) {
- g_string_free(stream_iter->name, TRUE);
- }
+ if (stream_iter->msg_iter) {
+ ctf_msg_iter_destroy(stream_iter->msg_iter);
+ }
+ g_free(stream_iter->buf);
+ if (stream_iter->name) {
+ g_string_free(stream_iter->name, TRUE);
+ }
- bt_message_put_ref(stream_iter->current_msg);
+ bt_message_put_ref(stream_iter->current_msg);
- /* Track the number of active stream iterator. */
- stream_iter->trace->session->lttng_live_msg_iter->active_stream_iter--;
+ /* Track the number of active stream iterator. */
+ stream_iter->trace->session->lttng_live_msg_iter->active_stream_iter--;
- g_free(stream_iter);
+ g_free(stream_iter);
}
projects / babeltrace.git / blobdiff