include/babeltrace/callbacks-internal.h

   1 #ifndef _BABELTRACE_CALLBACKS_INTERNAL_H
   2 #define _BABELTRACE_CALLBACKS_INTERNAL_H
   3
   4 /*
   5  * BabelTrace
   6  *
   7  * Internal callbacks header
   8  *
   9  * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
  10  *
  11  * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  12  *
  13  * Permission is hereby granted, free of charge, to any person obtaining a copy
  14  * of this software and associated documentation files (the "Software"), to deal
  15  * in the Software without restriction, including without limitation the rights
  16  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  17  * copies of the Software, and to permit persons to whom the Software is
  18  * furnished to do so, subject to the following conditions:
  19  *
  20  * The above copyright notice and this permission notice shall be included in
  21  * all copies or substantial portions of the Software.
  22  */
  23
  24 struct bt_callback {
  25         int prio;               /* Callback order priority. Lower first. Dynamically assigned from dependency graph. */
  26         void *private_data;
  27         int flags;
  28         struct bt_dependencies *depends;
  29         struct bt_dependencies *weak_depends;
  30         struct bt_dependencies *provides;
  31         enum bt_cb_ret (*callback)(struct bt_ctf_data *ctf_data,
  32                                    void *private_data);
  33 };
  34
  35 struct bt_callback_chain {
  36         GArray *callback;       /* Array of struct bt_callback, ordered by priority */
  37 };
  38
  39 /*
  40  * per id callbacks need to be per stream class because event ID vs
  41  * event name mapping can vary from stream to stream.
  42  */
  43 struct bt_stream_callbacks {
  44         GArray *per_id_callbacks;       /* Array of struct bt_callback_chain */
  45 };
  46
  47 struct bt_dependencies {
  48         GArray *deps;                   /* Array of GQuarks */
  49         int refcount;                   /* free when decremented to 0 */
  50 };
  51
  52 void process_callbacks(struct babeltrace_iter *iter,
  53         struct ctf_stream *stream);
  54
  55 #endif /* _BABELTRACE_CALLBACKS_INTERNAL_H */