include/babeltrace/ctf-ir/trace-internal.h

   1 #ifndef BABELTRACE_CTF_IR_TRACE_INTERNAL_H
   2 #define BABELTRACE_CTF_IR_TRACE_INTERNAL_H
   3
   4 /*
   5  * BabelTrace - CTF IR: Trace internal
   6  *
   7  * Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   8  *
   9  * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
  10  *
  11  * Permission is hereby granted, free of charge, to any person obtaining a copy
  12  * of this software and associated documentation files (the "Software"), to deal
  13  * in the Software without restriction, including without limitation the rights
  14  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  15  * copies of the Software, and to permit persons to whom the Software is
  16  * furnished to do so, subject to the following conditions:
  17  *
  18  * The above copyright notice and this permission notice shall be included in
  19  * all copies or substantial portions of the Software.
  20  *
  21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  24  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  25  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  26  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  27  * SOFTWARE.
  28  */
  29
  30 #include <babeltrace/ctf-ir/trace.h>
  31 #include <babeltrace/ctf-ir/field-types.h>
  32 #include <babeltrace/ctf-ir/fields.h>
  33 #include <babeltrace/object-internal.h>
  34 #include <babeltrace/babeltrace-internal.h>
  35 #include <babeltrace/values.h>
  36 #include <babeltrace/types.h>
  37 #include <glib.h>
  38 #include <sys/types.h>
  39 #include <babeltrace/compat/uuid-internal.h>
  40
  41 enum field_type_alias {
  42         FIELD_TYPE_ALIAS_UINT5_T = 0,
  43         FIELD_TYPE_ALIAS_UINT8_T,
  44         FIELD_TYPE_ALIAS_UINT16_T,
  45         FIELD_TYPE_ALIAS_UINT27_T,
  46         FIELD_TYPE_ALIAS_UINT32_T,
  47         FIELD_TYPE_ALIAS_UINT64_T,
  48         NR_FIELD_TYPE_ALIAS,
  49 };
  50
  51 struct bt_trace {
  52         struct bt_object base;
  53         GString *name;
  54         int frozen;
  55         unsigned char uuid[BABELTRACE_UUID_LEN];
  56         bt_bool uuid_set;
  57         enum bt_byte_order native_byte_order;
  58         struct bt_value *environment;
  59         GPtrArray *clocks; /* Array of pointers to bt_clock_class */
  60         GPtrArray *stream_classes; /* Array of ptrs to bt_stream_class */
  61         GPtrArray *streams; /* Array of ptrs to bt_stream */
  62         struct bt_field_type *packet_header_type;
  63         int64_t next_stream_id;
  64         int is_created_by_writer;
  65
  66         /*
  67          * This flag indicates if the trace is valid. A valid
  68          * trace is _always_ frozen.
  69          */
  70         int valid;
  71         GPtrArray *listeners; /* Array of struct listener_wrapper */
  72         GArray *is_static_listeners;
  73         bt_bool is_static;
  74         bt_bool in_remove_listener;
  75 };
  76
  77 struct metadata_context {
  78         GString *string;
  79         GString *field_name;
  80         unsigned int current_indentation_level;
  81 };
  82
  83 BT_HIDDEN
  84 const char *get_byte_order_string(int byte_order);
  85
  86 BT_HIDDEN
  87 struct bt_field_type *get_field_type(enum field_type_alias alias);
  88
  89 BT_HIDDEN
  90 int bt_trace_object_modification(struct bt_visitor_object *object,
  91                 void *trace_ptr);
  92
  93 BT_HIDDEN
  94 bt_bool bt_trace_has_clock_class(struct bt_trace *trace,
  95                 struct bt_clock_class *clock_class);
  96
  97 /**
  98 @brief  User function type to use with bt_trace_add_listener().
  99
 100 @param[in] obj  New CTF IR object which is part of the trace
 101                 class hierarchy.
 102 @param[in] data User data.
 103
 104 @prenotnull{obj}
 105 */
 106 typedef void (*bt_listener_cb)(struct bt_visitor_object *obj, void *data);
 107
 108 /**
 109 @brief  Adds the trace class modification listener \p listener to
 110         the CTF IR trace class \p trace_class.
 111
 112 Once you add \p listener to \p trace_class, whenever \p trace_class
 113 is modified, \p listener is called with the new element and with
 114 \p data (user data).
 115
 116 @param[in] trace_class  Trace class to which to add \p listener.
 117 @param[in] listener     Modification listener function.
 118 @param[in] data         User data.
 119 @returns                0 on success, or a negative value on error.
 120
 121 @prenotnull{trace_class}
 122 @prenotnull{listener}
 123 @postrefcountsame{trace_class}
 124 */
 125 BT_HIDDEN
 126 int bt_trace_add_listener(struct bt_trace *trace_class,
 127                 bt_listener_cb listener, void *data);
 128
 129 /*
 130  * bt_trace_get_metadata_string: get metadata string.
 131  *
 132  * Get the trace's TSDL metadata. The caller assumes the ownership of the
 133  * returned string.
 134  *
 135  * @param trace Trace instance.
 136  *
 137  * Returns the metadata string on success, NULL on error.
 138  */
 139 BT_HIDDEN
 140 char *bt_trace_get_metadata_string(struct bt_trace *trace);
 141
 142 #endif /* BABELTRACE_CTF_IR_TRACE_INTERNAL_H */