X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=src%2Fplugins%2Fctf%2Flttng-live%2Fdata-stream.c;h=6414805351deb4157ce66280ee60be2993b3cbfb;hb=ecb4ba8aa48c8d0deab589b7c1f4c999a52aa355;hp=25a8e4cf1e66bdea7b9c18d4a52f9ada2a381bfd;hpb=578e048b5debf169e286e5b5cc747b5d6c16886d;p=babeltrace.git diff --git a/src/plugins/ctf/lttng-live/data-stream.c b/src/plugins/ctf/lttng-live/data-stream.c index 25a8e4cf..64148053 100644 --- a/src/plugins/ctf/lttng-live/data-stream.c +++ b/src/plugins/ctf/lttng-live/data-stream.c @@ -23,31 +23,33 @@ * SOFTWARE. */ -#define BT_LOG_TAG "PLUGIN-CTF-LTTNG-LIVE-SRC-DS" -#include "logging.h" +#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" +#include "logging/comp-logging.h" +#include #include -#include #include -#include + #include -#include -#include "compat/mman.h" + #include + #include "../common/msg-iter/msg-iter.h" #include "common/assert.h" - +#include "compat/mman.h" #include "data-stream.h" #define STREAM_NAME_PREFIX "stream-" static -enum bt_msg_iter_medium_status medop_request_bytes( +enum ctf_msg_iter_medium_status medop_request_bytes( size_t request_sz, uint8_t **buffer_addr, size_t *buffer_sz, void *data) { - enum bt_msg_iter_medium_status status = - BT_MSG_ITER_MEDIUM_STATUS_OK; + enum ctf_msg_iter_medium_status status = + CTF_MSG_ITER_MEDIUM_STATUS_OK; struct lttng_live_stream_iterator *stream = data; struct lttng_live_trace *trace = stream->trace; struct lttng_live_session *session = trace->session; @@ -56,12 +58,18 @@ enum bt_msg_iter_medium_status medop_request_bytes( uint64_t len_left; uint64_t read_len; + 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) { stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; - status = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; - return status; + 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, @@ -70,6 +78,7 @@ enum bt_msg_iter_medium_status medop_request_bytes( *buffer_addr = stream->buf; *buffer_sz = recv_len; stream->offset += recv_len; +end: return status; } @@ -78,11 +87,13 @@ bt_stream *medop_borrow_stream(bt_stream_class *stream_class, int64_t stream_id, void *data) { struct lttng_live_stream_iterator *lttng_live_stream = 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_LOGD("Creating stream %s (ID: %" PRIu64 ") out of stream " + BT_COMP_LOGI("Creating stream %s (ID: %" PRIu64 ") out of stream " "class %" PRId64, lttng_live_stream->name->str, stream_id, stream_class_id); @@ -103,19 +114,23 @@ bt_stream *medop_borrow_stream(bt_stream_class *stream_class, } if (!lttng_live_stream->stream) { - BT_LOGE("Cannot create stream %s (stream class ID " + 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; } -static struct bt_msg_iter_medium_ops medops = { +static struct ctf_msg_iter_medium_ops medops = { .request_bytes = medop_request_bytes, .seek = NULL, .borrow_stream = medop_borrow_stream, @@ -123,16 +138,23 @@ static struct bt_msg_iter_medium_ops medops = { BT_HIDDEN enum lttng_live_iterator_status lttng_live_lazy_msg_init( - struct lttng_live_session *session) + 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 = g_ptr_array_index(session->traces, trace_idx); @@ -143,19 +165,30 @@ enum lttng_live_iterator_status lttng_live_lazy_msg_init( struct ctf_trace_class *ctf_tc; struct lttng_live_stream_iterator *stream_iter = g_ptr_array_index(trace->stream_iterators, - stream_iter_idx); + stream_iter_idx); if (stream_iter->msg_iter) { continue; } ctf_tc = ctf_metadata_decoder_borrow_ctf_trace_class( - trace->metadata->decoder); - stream_iter->msg_iter = bt_msg_iter_create(ctf_tc, - lttng_live->max_query_size, medops, - stream_iter); + 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; } + + ctf_msg_iter_set_emit_stream_end_message( + stream_iter->msg_iter, true); + ctf_msg_iter_set_emit_stream_beginning_message( + stream_iter->msg_iter, true); } } @@ -171,25 +204,36 @@ 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) + 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_borrow_trace(session, ctf_trace_id); if (!trace) { + BT_COMP_LOGE_APPEND_CAUSE(self_comp, + "Failed to borrow CTF trace."); goto error; } @@ -202,28 +246,39 @@ struct lttng_live_stream_iterator *lttng_live_stream_iterator_create( if (trace->trace) { struct ctf_trace_class *ctf_tc = ctf_metadata_decoder_borrow_ctf_trace_class( - trace->metadata->decoder); + trace->metadata->decoder); BT_ASSERT(!stream_iter->msg_iter); - stream_iter->msg_iter = bt_msg_iter_create(ctf_tc, - lttng_live->max_query_size, medops, - stream_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; } + + ctf_msg_iter_set_emit_stream_end_message( + stream_iter->msg_iter, true); + ctf_msg_iter_set_emit_stream_beginning_message( + stream_iter->msg_iter, true); } 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); + stream_iter->viewer_stream_id); g_ptr_array_add(trace->stream_iterators, stream_iter); /* Track the number of active stream iterator. */ @@ -250,11 +305,9 @@ void lttng_live_stream_iterator_destroy( } if (stream_iter->msg_iter) { - bt_msg_iter_destroy(stream_iter->msg_iter); - } - if (stream_iter->buf) { - g_free(stream_iter->buf); + ctf_msg_iter_destroy(stream_iter->msg_iter); } + g_free(stream_iter->buf); if (stream_iter->name) { g_string_free(stream_iter->name, TRUE); }