X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fconsumer%2Fconsumer.h;h=582385c82bef2454361f39b6dca0d70b294157d7;hb=97535efaa975ca52bf02c2d5e76351bfd2e3defa;hp=73189660ce4eb888bf3acc12a0f17ea0c3f9071e;hpb=04ed9e10dfa0b3c88d4a7abe9fa59b8e03b7e49a;p=lttng-tools.git

diff --git a/src/common/consumer/consumer.h b/src/common/consumer/consumer.h
index 73189660c..582385c82 100644
--- a/src/common/consumer/consumer.h
+++ b/src/common/consumer/consumer.h
@@ -27,6 +27,11 @@
 #include <common/trace-chunk-registry.h>
 #include <common/credentials.h>
 #include <common/buffer-view.h>
+#include <common/dynamic-array.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 struct lttng_consumer_local_data;
 
@@ -95,7 +100,7 @@ enum sync_metadata_status {
 	SYNC_METADATA_STATUS_ERROR,
 };
 
-extern struct lttng_consumer_global_data consumer_data;
+extern struct lttng_consumer_global_data the_consumer_data;
 
 struct stream_list {
 	struct cds_list_head head;
@@ -159,7 +164,7 @@ struct lttng_consumer_channel {
 
 	/* For UST */
 	uid_t ust_app_uid;	/* Application UID. */
-	struct ustctl_consumer_channel *uchan;
+	struct lttng_ust_ctl_consumer_channel *uchan;
 	unsigned char uuid[LTTNG_UUID_STR_LEN];
 	/*
 	 * Temporary stream list used to store the streams once created and waiting
@@ -298,6 +303,12 @@ struct stream_subbuffer {
 	} info;
 };
 
+enum get_next_subbuffer_status {
+	GET_NEXT_SUBBUFFER_STATUS_OK,
+	GET_NEXT_SUBBUFFER_STATUS_NO_DATA,
+	GET_NEXT_SUBBUFFER_STATUS_ERROR,
+};
+
 /*
  * Perform any operation required to acknowledge
  * the wake-up of a consumer stream (e.g. consume a byte on a wake-up pipe).
@@ -320,8 +331,8 @@ typedef int (*on_sleep_cb)(struct lttng_consumer_stream *,
  *
  * Stream and channel locks are acquired during this call.
  */
-typedef int (*get_next_subbuffer_cb)(struct lttng_consumer_stream *,
-		struct stream_subbuffer *);
+typedef enum get_next_subbuffer_status (*get_next_subbuffer_cb)(
+		struct lttng_consumer_stream *, struct stream_subbuffer *);
 
 /*
  * Populate the stream_subbuffer's info member. The info to populate
@@ -539,7 +550,7 @@ struct lttng_consumer_stream {
 	/* Stream name. Format is: <channel_name>_<cpu_number> */
 	char name[LTTNG_SYMBOL_NAME_LEN];
 	/* Internal state of libustctl. */
-	struct ustctl_consumer_stream *ustream;
+	struct lttng_ust_ctl_consumer_stream *ustream;
 	struct cds_list_head send_node;
 	/* On-disk circular buffer */
 	uint64_t tracefile_size_current;
@@ -636,7 +647,7 @@ struct lttng_consumer_stream {
 		reset_metadata_cb reset_metadata;
 		consume_subbuffer_cb consume_subbuffer;
 		put_next_subbuffer_cb put_next_subbuffer;
-		post_consume_cb post_consume;
+		struct lttng_dynamic_array post_consume_cbs;
 		send_live_beacon_cb send_live_beacon;
 		on_sleep_cb on_sleep;
 		unlock_cb unlock;
@@ -791,30 +802,30 @@ struct lttng_consumer_global_data {
 	 * This is nested OUTSIDE the stream lock.
 	 * This is nested OUTSIDE the consumer_relayd_sock_pair lock.
 	 */
-	pthread_mutex_t lock;
+	pthread_mutex_t lock {};
 
 	/*
 	 * Number of streams in the data stream hash table declared outside.
 	 * Protected by consumer_data.lock.
 	 */
-	int stream_count;
+	int stream_count = 0;
 
 	/* Channel hash table protected by consumer_data.lock. */
-	struct lttng_ht *channel_ht;
+	struct lttng_ht *channel_ht = nullptr;
 	/* Channel hash table indexed by session id. */
-	struct lttng_ht *channels_by_session_id_ht;
+	struct lttng_ht *channels_by_session_id_ht = nullptr;
 	/*
 	 * Flag specifying if the local array of FDs needs update in the
 	 * poll function. Protected by consumer_data.lock.
 	 */
-	unsigned int need_update;
-	enum lttng_consumer_type type;
+	unsigned int need_update = 1;
+	enum lttng_consumer_type type = LTTNG_CONSUMER_UNKNOWN;
 
 	/*
 	 * Relayd socket(s) hashtable indexed by network sequence number. Each
 	 * stream has an index which associate the right relayd socket to use.
 	 */
-	struct lttng_ht *relayd_ht;
+	struct lttng_ht *relayd_ht = nullptr;
 
 	/*
 	 * This hash table contains all streams (metadata and data) indexed by
@@ -823,17 +834,17 @@ struct lttng_consumer_global_data {
 	 *
 	 * This HT uses the "node_session_id" of the consumer stream.
 	 */
-	struct lttng_ht *stream_list_ht;
+	struct lttng_ht *stream_list_ht = nullptr;
 
 	/*
 	 * This HT uses the "node_channel_id" of the consumer stream.
 	 */
-	struct lttng_ht *stream_per_chan_id_ht;
+	struct lttng_ht *stream_per_chan_id_ht = nullptr;
 
 	/*
 	 * Trace chunk registry indexed by (session_id, chunk_id).
 	 */
-	struct lttng_trace_chunk_registry *chunk_registry;
+	struct lttng_trace_chunk_registry *chunk_registry = nullptr;
 };
 
 /*
@@ -848,8 +859,12 @@ extern int consumer_quit;
  */
 extern int consumer_quit;
 
-/* Flag used to temporarily pause data consumption from testpoints. */
-extern int data_consumption_paused;
+/*
+ * Flag used to temporarily pause data consumption from testpoints.
+ *
+ * This variable is dlsym-ed from a test, so needs to be exported.
+ */
+LTTNG_EXPORT extern int data_consumption_paused;
 
 /* Return a human-readable consumer type string that is suitable for logging. */
 static inline
@@ -1051,5 +1066,11 @@ enum lttcomm_return_code lttng_consumer_init_command(
 int lttng_consumer_clear_channel(struct lttng_consumer_channel *channel);
 enum lttcomm_return_code lttng_consumer_open_channel_packets(
 		struct lttng_consumer_channel *channel);
+int consumer_metadata_wakeup_pipe(const struct lttng_consumer_channel *channel);
+void lttng_consumer_sigbus_handle(void *addr);
+
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* LIB_CONSUMER_H */