include/babeltrace/graph/message-const.h

   1 #ifndef BABELTRACE_GRAPH_MESSAGE_CONST_H
   2 #define BABELTRACE_GRAPH_MESSAGE_CONST_H
   3
   4 /*
   5  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   6  * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  */
  26
  27 /* For bt_message */
  28 #include <babeltrace/types.h>
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 /**
  35  * Message types. Unhandled message types should be ignored.
  36  */
  37 enum bt_message_type {
  38         BT_MESSAGE_TYPE_EVENT =                 0,
  39         BT_MESSAGE_TYPE_INACTIVITY =            1,
  40         BT_MESSAGE_TYPE_STREAM_BEGINNING =      2,
  41         BT_MESSAGE_TYPE_STREAM_END =            3,
  42         BT_MESSAGE_TYPE_PACKET_BEGINNING =      4,
  43         BT_MESSAGE_TYPE_PACKET_END =            5,
  44 };
  45
  46 /**
  47  * Get a message's type.
  48  *
  49  * @param message       Message instance
  50  * @returns             One of #bt_message_type
  51  */
  52 extern enum bt_message_type bt_message_get_type(
  53                 const bt_message *message);
  54
  55 extern void bt_message_get_ref(const bt_message *message);
  56
  57 extern void bt_message_put_ref(const bt_message *message);
  58
  59 #define BT_MESSAGE_PUT_REF_AND_RESET(_var)              \
  60         do {                                            \
  61                 bt_message_put_ref(_var);               \
  62                 (_var) = NULL;                          \
  63         } while (0)
  64
  65 #define BT_MESSAGE_MOVE_REF(_var_dst, _var_src) \
  66         do {                                            \
  67                 bt_message_put_ref(_var_dst);   \
  68                 (_var_dst) = (_var_src);                \
  69                 (_var_src) = NULL;                      \
  70         } while (0)
  71
  72 #ifdef __cplusplus
  73 }
  74 #endif
  75
  76 #endif /* BABELTRACE_GRAPH_MESSAGE_CONST_H */