src/lib/trace-ir/trace.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   5  * Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   6  */
   7
   8 #ifndef BABELTRACE_LIB_TRACE_IR_TRACE_H
   9 #define BABELTRACE_LIB_TRACE_IR_TRACE_H
  10
  11 #include <babeltrace2/trace-ir/trace.h>
  12 #include <babeltrace2/trace-ir/field-class.h>
  13 #include <babeltrace2/trace-ir/field.h>
  14 #include "lib/object.h"
  15 #include <babeltrace2/value.h>
  16 #include <babeltrace2/types.h>
  17 #include <glib.h>
  18 #include <stdbool.h>
  19 #include <sys/types.h>
  20 #include "common/uuid.h"
  21
  22 #include "stream-class.h"
  23 #include "trace-class.h"
  24
  25 struct bt_trace {
  26         struct bt_object base;
  27
  28         /* Owned by this */
  29         struct bt_value *user_attributes;
  30
  31         /* Owned by this */
  32         struct bt_trace_class *class;
  33
  34         gchar *ns;
  35         gchar *name;
  36
  37         union {
  38                 /* Used for MIP == 0 */
  39                 struct {
  40                         bt_uuid_t uuid;
  41
  42                         /* NULL or `uuid` above */
  43                         bt_uuid value;
  44                 } uuid;
  45
  46                 /* Used for MIP >= 1 */
  47                 gchar *uid;
  48         } uid_or_uuid;
  49
  50         struct bt_value *environment;
  51
  52         /* Array of `struct bt_stream *` */
  53         GPtrArray *streams;
  54
  55         /*
  56          * Stream class (weak, owned by owned trace class) to number of
  57          * instantiated streams, used to automatically assign stream IDs
  58          * per stream class within this trace.
  59          */
  60         GHashTable *stream_classes_stream_count;
  61
  62         GArray *destruction_listeners;
  63         bool frozen;
  64 };
  65
  66 void _bt_trace_freeze(const struct bt_trace *trace);
  67
  68 #ifdef BT_DEV_MODE
  69 # define bt_trace_freeze                _bt_trace_freeze
  70 #else
  71 # define bt_trace_freeze(_trace)
  72 #endif
  73
  74 void bt_trace_add_stream(struct bt_trace *trace, struct bt_stream *stream);
  75
  76 uint64_t bt_trace_get_automatic_stream_id(const struct bt_trace *trace,
  77                 const struct bt_stream_class *stream_class);
  78
  79 #endif /* BABELTRACE_LIB_TRACE_IR_TRACE_H */