src/common/kernel-consumer/kernel-consumer.h

   1 /*
   2  * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
   3  * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License, version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #ifndef _LTTNG_KCONSUMER_H
  21 #define _LTTNG_KCONSUMER_H
  22
  23 #include <stdbool.h>
  24 #include <common/consumer/consumer.h>
  25
  26 int lttng_kconsumer_take_snapshot(struct lttng_consumer_stream *stream);
  27 int lttng_kconsumer_sample_snapshot_positions(
  28                 struct lttng_consumer_stream *stream);
  29 int lttng_kconsumer_get_produced_snapshot(struct lttng_consumer_stream *stream,
  30         unsigned long *pos);
  31 int lttng_kconsumer_get_consumed_snapshot(struct lttng_consumer_stream *stream,
  32                 unsigned long *pos);
  33 int lttng_kconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
  34                 int sock, struct pollfd *consumer_sockpoll);
  35 ssize_t lttng_kconsumer_read_subbuffer(struct lttng_consumer_stream *stream,
  36                 struct lttng_consumer_local_data *ctx, bool *rotated);
  37 int lttng_kconsumer_on_recv_stream(struct lttng_consumer_stream *stream);
  38 int lttng_kconsumer_data_pending(struct lttng_consumer_stream *stream);
  39 int lttng_kconsumer_sync_metadata(struct lttng_consumer_stream *metadata);
  40
  41 #endif /* _LTTNG_KCONSUMER_H */