Copyright ownership transfer

[lttng-tools.git] / src / common / consumer / consumer.h

diff --git a/src/common/consumer/consumer.h b/src/common/consumer/consumer.h
index aa8a401a0416efe089057f2e07b6187c38bf78d5..7ef1573dd871bcbf72cc737df1e829d801ed1016 100644 (file)
--- a/src/common/consumer/consumer.h
+++ b/src/common/consumer/consumer.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
+ * Copyright (C) 2011 EfficiOS Inc.
  * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
  * Copyright (C) 2018 Jérémie Galarneau <jeremie.galarneau@efficios.com>
@@ -64,6 +64,7 @@ enum lttng_consumer_command {
        LTTNG_CONSUMER_CLOSE_TRACE_CHUNK,
        LTTNG_CONSUMER_TRACE_CHUNK_EXISTS,
        LTTNG_CONSUMER_CLEAR_CHANNEL,
+       LTTNG_CONSUMER_OPEN_CHANNEL_PACKETS,
 };
 
 enum lttng_consumer_type {
@@ -88,6 +89,12 @@ enum consumer_channel_type {
        CONSUMER_CHANNEL_TYPE_DATA      = 1,
 };
 
+enum sync_metadata_status {
+       SYNC_METADATA_STATUS_NEW_DATA,
+       SYNC_METADATA_STATUS_NO_DATA,
+       SYNC_METADATA_STATUS_ERROR,
+};
+
 extern struct lttng_consumer_global_data consumer_data;
 
 struct stream_list {
@@ -265,6 +272,14 @@ struct stream_subbuffer {
                        unsigned long subbuf_size;
                        unsigned long padded_subbuf_size;
                        uint64_t version;
+                       /*
+                        * Left unset when unsupported.
+                        *
+                        * Indicates that this is the last sub-buffer of
+                        * a series of sub-buffer that makes-up a coherent
+                        * (parseable) unit of metadata.
+                        */
+                       LTTNG_OPTIONAL(bool) coherent;
                } metadata;
                struct {
                        unsigned long subbuf_size;
@@ -374,6 +389,13 @@ typedef void (*lock_cb)(struct lttng_consumer_stream *);
  */
 typedef void (*unlock_cb)(struct lttng_consumer_stream *);
 
+/*
+ * Assert that the stream and channel lock and any other stream type specific
+ * lock that need to be acquired during the processing of a read_subbuffer
+ * operation is acquired.
+ */
+typedef void (*assert_locked_cb)(struct lttng_consumer_stream *);
+
 /*
  * Invoked when a subbuffer's metadata version does not match the last
  * known metadata version.
@@ -582,6 +604,9 @@ struct lttng_consumer_stream {
         */
        uint64_t rotate_position;
 
+       /* Whether or not a packet was opened during the current trace chunk. */
+       bool opened_packet_in_current_trace_chunk;
+
        /*
         * Read-only copies of channel values. We cannot safely access the
         * channel from a stream, so we need to have a local copy of these
@@ -622,7 +647,9 @@ struct lttng_consumer_stream {
                send_live_beacon_cb send_live_beacon;
                on_sleep_cb on_sleep;
                unlock_cb unlock;
+               assert_locked_cb assert_locked;
        } read_subbuffer_ops;
+       struct metadata_bucket *metadata_bucket;
 };
 
 /*
@@ -954,7 +981,6 @@ struct lttng_consumer_local_data *lttng_consumer_create(
                int (*update_stream)(uint64_t sessiond_key, uint32_t state));
 void lttng_consumer_destroy(struct lttng_consumer_local_data *ctx);
 ssize_t lttng_consumer_on_read_subbuffer_mmap(
-               struct lttng_consumer_local_data *ctx,
                struct lttng_consumer_stream *stream,
                const struct lttng_buffer_view *buffer,
                unsigned long padding);
@@ -1031,5 +1057,8 @@ enum lttcomm_return_code lttng_consumer_init_command(
                struct lttng_consumer_local_data *ctx,
                const lttng_uuid sessiond_uuid);
 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);
 
 #endif /* LIB_CONSUMER_H */