src/lib/graph/component.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   5  * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   6  */
   7
   8 #ifndef BABELTRACE_GRAPH_COMPONENT_INTERNAL_H
   9 #define BABELTRACE_GRAPH_COMPONENT_INTERNAL_H
  10
  11 #include "common/macros.h"
  12 #include <babeltrace2/graph/component.h>
  13 #include <babeltrace2/graph/component-class.h>
  14 #include "lib/object.h"
  15 #include <babeltrace2/types.h>
  16 #include <babeltrace2/logging.h>
  17 #include "common/assert.h"
  18 #include <glib.h>
  19 #include <stdbool.h>
  20 #include <stdio.h>
  21
  22 #include "component-class.h"
  23 #include "port.h"
  24
  25 typedef void (*bt_component_destroy_listener_func)(
  26                 struct bt_component *class, void *data);
  27
  28 struct bt_component_destroy_listener {
  29         bt_component_destroy_listener_func func;
  30         void *data;
  31 };
  32
  33 struct bt_graph;
  34
  35 struct bt_component {
  36         struct bt_object base;
  37         struct bt_component_class *class;
  38         GString *name;
  39         bt_logging_level log_level;
  40
  41         /*
  42          * Internal destroy function specific to a source, filter, or
  43          * sink component object.
  44          */
  45         void (*destroy)(struct bt_component *);
  46
  47         /* User-defined data */
  48         void *user_data;
  49
  50         /* Input and output ports (weak references) */
  51         GPtrArray *input_ports;
  52         GPtrArray *output_ports;
  53
  54         /* Array of struct bt_component_destroy_listener */
  55         GArray *destroy_listeners;
  56
  57         bool initialized;
  58 };
  59
  60 static inline
  61 struct bt_graph *bt_component_borrow_graph(struct bt_component *comp)
  62 {
  63         BT_ASSERT_DBG(comp);
  64         return (void *) bt_object_borrow_parent(&comp->base);
  65 }
  66
  67 BT_HIDDEN
  68 int bt_component_create(struct bt_component_class *component_class,
  69                 const char *name, bt_logging_level log_level,
  70                 struct bt_component **component);
  71
  72 BT_HIDDEN
  73 enum bt_component_class_port_connected_method_status
  74 bt_component_port_connected(
  75                 struct bt_component *comp,
  76                 struct bt_port *self_port, struct bt_port *other_port);
  77
  78 BT_HIDDEN
  79 void bt_component_set_graph(struct bt_component *component,
  80                 struct bt_graph *graph);
  81
  82 BT_HIDDEN
  83 uint64_t bt_component_get_input_port_count(const struct bt_component *comp);
  84
  85 BT_HIDDEN
  86 uint64_t bt_component_get_output_port_count(const struct bt_component *comp);
  87
  88 BT_HIDDEN
  89 struct bt_port_input *bt_component_borrow_input_port_by_index(
  90                 struct bt_component *comp, uint64_t index);
  91
  92 BT_HIDDEN
  93 struct bt_port_output *bt_component_borrow_output_port_by_index(
  94                 struct bt_component *comp, uint64_t index);
  95
  96 BT_HIDDEN
  97 struct bt_port_input *bt_component_borrow_input_port_by_name(
  98                 struct bt_component *comp, const char *name);
  99
 100 BT_HIDDEN
 101 struct bt_port_output *bt_component_borrow_output_port_by_name(
 102                 struct bt_component *comp, const char *name);
 103
 104 BT_HIDDEN
 105 enum bt_self_component_add_port_status bt_component_add_input_port(
 106                 struct bt_component *component, const char *name,
 107                 void *user_data, struct bt_port **port);
 108
 109 BT_HIDDEN
 110 enum bt_self_component_add_port_status bt_component_add_output_port(
 111                 struct bt_component *component, const char *name,
 112                 void *user_data, struct bt_port **port);
 113
 114 BT_HIDDEN
 115 void bt_component_remove_port(struct bt_component *component,
 116                 struct bt_port *port);
 117
 118 BT_HIDDEN
 119 void bt_component_add_destroy_listener(struct bt_component *component,
 120                 bt_component_destroy_listener_func func, void *data);
 121
 122 BT_HIDDEN
 123 void bt_component_remove_destroy_listener(struct bt_component *component,
 124                 bt_component_destroy_listener_func func, void *data);
 125
 126 #endif /* BABELTRACE_GRAPH_COMPONENT_INTERNAL_H */