X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fconsumer.c;h=221c348df055722918793e32617b6812dcfbc680;hb=56591bac20c0f3b728c95d92702d243de838bdc4;hp=a26a41554d2e379c2e97ad4cca20929627571468;hpb=04ef1097c8f54a151c899c1773ac56907c97694d;p=lttng-tools.git diff --git a/src/common/consumer.c b/src/common/consumer.c index a26a41554..221c348df 100644 --- a/src/common/consumer.c +++ b/src/common/consumer.c @@ -457,6 +457,19 @@ void consumer_del_stream(struct lttng_consumer_stream *stream, consumer_stream_destroy(stream, ht); } +/* + * XXX naming of del vs destroy is all mixed up. + */ +void consumer_del_stream_for_data(struct lttng_consumer_stream *stream) +{ + consumer_stream_destroy(stream, data_ht); +} + +void consumer_del_stream_for_metadata(struct lttng_consumer_stream *stream) +{ + consumer_stream_destroy(stream, metadata_ht); +} + struct lttng_consumer_stream *consumer_allocate_stream(uint64_t channel_key, uint64_t stream_key, enum lttng_consumer_stream_state state, @@ -539,9 +552,9 @@ end: /* * Add a stream to the global list protected by a mutex. */ -static int add_stream(struct lttng_consumer_stream *stream, - struct lttng_ht *ht) +int consumer_add_data_stream(struct lttng_consumer_stream *stream) { + struct lttng_ht *ht = data_ht; int ret = 0; assert(stream); @@ -551,6 +564,7 @@ static int add_stream(struct lttng_consumer_stream *stream, pthread_mutex_lock(&consumer_data.lock); pthread_mutex_lock(&stream->chan->lock); + pthread_mutex_lock(&stream->chan->timer_lock); pthread_mutex_lock(&stream->lock); rcu_read_lock(); @@ -588,12 +602,18 @@ static int add_stream(struct lttng_consumer_stream *stream, rcu_read_unlock(); pthread_mutex_unlock(&stream->lock); + pthread_mutex_unlock(&stream->chan->timer_lock); pthread_mutex_unlock(&stream->chan->lock); pthread_mutex_unlock(&consumer_data.lock); return ret; } +void consumer_del_data_stream(struct lttng_consumer_stream *stream) +{ + consumer_del_stream(stream, data_ht); +} + /* * Add relayd socket to global consumer data hashtable. RCU read side lock MUST * be acquired before calling this. @@ -838,6 +858,7 @@ struct lttng_consumer_channel *consumer_allocate_channel(uint64_t key, channel->tracefile_count = tracefile_count; channel->monitor = monitor; pthread_mutex_init(&channel->lock, NULL); + pthread_mutex_init(&channel->timer_lock, NULL); /* * In monitor mode, the streams associated with the channel will be put in @@ -884,6 +905,7 @@ int consumer_add_channel(struct lttng_consumer_channel *channel, pthread_mutex_lock(&consumer_data.lock); pthread_mutex_lock(&channel->lock); + pthread_mutex_lock(&channel->timer_lock); rcu_read_lock(); lttng_ht_lookup(consumer_data.channel_ht, &channel->key, &iter); @@ -900,6 +922,7 @@ int consumer_add_channel(struct lttng_consumer_channel *channel, end: rcu_read_unlock(); + pthread_mutex_unlock(&channel->timer_lock); pthread_mutex_unlock(&channel->lock); pthread_mutex_unlock(&consumer_data.lock); @@ -1153,6 +1176,7 @@ struct lttng_consumer_local_data *lttng_consumer_create( ctx->consumer_error_socket = -1; ctx->consumer_metadata_socket = -1; + pthread_mutex_init(&ctx->metadata_socket_lock, NULL); /* assign the callbacks */ ctx->on_buffer_ready = buffer_ready; ctx->on_recv_channel = recv_channel; @@ -1310,6 +1334,7 @@ ssize_t lttng_consumer_on_read_subbuffer_mmap( if (stream->net_seq_idx != (uint64_t) -1ULL) { relayd = consumer_find_relayd(stream->net_seq_idx); if (relayd == NULL) { + ret = -EPIPE; goto end; } } @@ -1319,28 +1344,31 @@ ssize_t lttng_consumer_on_read_subbuffer_mmap( case LTTNG_CONSUMER_KERNEL: mmap_base = stream->mmap_base; ret = kernctl_get_mmap_read_offset(stream->wait_fd, &mmap_offset); + if (ret != 0) { + PERROR("tracer ctl get_mmap_read_offset"); + written = -errno; + goto end; + } break; case LTTNG_CONSUMER32_UST: case LTTNG_CONSUMER64_UST: mmap_base = lttng_ustctl_get_mmap_base(stream); if (!mmap_base) { ERR("read mmap get mmap base for stream %s", stream->name); - written = -1; + written = -EPERM; goto end; } ret = lttng_ustctl_get_mmap_read_offset(stream, &mmap_offset); - + if (ret != 0) { + PERROR("tracer ctl get_mmap_read_offset"); + written = ret; + goto end; + } break; default: ERR("Unknown consumer_data type"); assert(0); } - if (ret != 0) { - errno = -ret; - PERROR("tracer ctl get_mmap_read_offset"); - written = ret; - goto end; - } /* Handle stream on the relayd if the output is on the network */ if (relayd) { @@ -1421,7 +1449,7 @@ ssize_t lttng_consumer_on_read_subbuffer_mmap( */ DBG("Error in file write mmap"); if (written == 0) { - written = ret; + written = -errno; } /* Socket operation failed. We consider the relayd dead */ if (errno == EPIPE || errno == EINVAL) { @@ -1509,6 +1537,7 @@ ssize_t lttng_consumer_on_read_subbuffer_splice( if (stream->net_seq_idx != (uint64_t) -1ULL) { relayd = consumer_find_relayd(stream->net_seq_idx); if (relayd == NULL) { + ret = -EPIPE; goto end; } } @@ -1955,8 +1984,8 @@ void consumer_del_metadata_stream(struct lttng_consumer_stream *stream, end: /* * Nullify the stream reference so it is not used after deletion. The - * consumer data lock MUST be acquired before being able to check for a - * NULL pointer value. + * channel lock MUST be acquired before being able to check for + * a NULL pointer value. */ stream->chan->metadata_stream = NULL; @@ -1976,9 +2005,9 @@ free_stream_rcu: * Action done with the metadata stream when adding it to the consumer internal * data structures to handle it. */ -static int add_metadata_stream(struct lttng_consumer_stream *stream, - struct lttng_ht *ht) +int consumer_add_metadata_stream(struct lttng_consumer_stream *stream) { + struct lttng_ht *ht = metadata_ht; int ret = 0; struct lttng_ht_iter iter; struct lttng_ht_node_u64 *node; @@ -1990,6 +2019,7 @@ static int add_metadata_stream(struct lttng_consumer_stream *stream, pthread_mutex_lock(&consumer_data.lock); pthread_mutex_lock(&stream->chan->lock); + pthread_mutex_lock(&stream->chan->timer_lock); pthread_mutex_lock(&stream->lock); /* @@ -2036,6 +2066,7 @@ static int add_metadata_stream(struct lttng_consumer_stream *stream, pthread_mutex_unlock(&stream->lock); pthread_mutex_unlock(&stream->chan->lock); + pthread_mutex_unlock(&stream->chan->timer_lock); pthread_mutex_unlock(&consumer_data.lock); return ret; } @@ -2181,7 +2212,7 @@ restart: pipe_len = lttng_pipe_read(ctx->consumer_metadata_pipe, &stream, sizeof(stream)); if (pipe_len < 0) { - ERR("read metadata stream, ret: %ld", pipe_len); + ERR("read metadata stream, ret: %zd", pipe_len); /* * Continue here to handle the rest of the streams. */ @@ -2198,14 +2229,6 @@ restart: DBG("Adding metadata stream %d to poll set", stream->wait_fd); - ret = add_metadata_stream(stream, metadata_ht); - if (ret) { - ERR("Unable to add metadata stream"); - /* Stream was not setup properly. Continuing. */ - consumer_del_metadata_stream(stream, NULL); - continue; - } - /* Add metadata stream to the global poll events list */ lttng_poll_add(&events, stream->wait_fd, LPOLLIN | LPOLLPRI); @@ -2404,7 +2427,7 @@ void *consumer_thread_data_poll(void *data) pipe_readlen = lttng_pipe_read(ctx->consumer_data_pipe, &new_stream, sizeof(new_stream)); if (pipe_readlen < 0) { - ERR("Consumer data pipe ret %ld", pipe_readlen); + ERR("Consumer data pipe ret %zd", pipe_readlen); /* Continue so we can at least handle the current stream(s). */ continue; } @@ -2419,17 +2442,6 @@ void *consumer_thread_data_poll(void *data) continue; } - ret = add_stream(new_stream, data_ht); - if (ret) { - ERR("Consumer add stream %" PRIu64 " failed. Continuing", - new_stream->key); - /* - * At this point, if the add_stream fails, it is not in the - * hash table thus passing the NULL value here. - */ - consumer_del_stream(new_stream, NULL); - } - /* Continue to update the local streams and handle prio ones */ continue; }