src/bindings/python/bt2/bt2/native_bt_message_iterator.i

   1 /*
   2  * The MIT License (MIT)
   3  *
   4  * Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 %include <babeltrace2/graph/message-iterator.h>
  26 %include <babeltrace2/graph/port-output-message-iterator.h>
  27 %include <babeltrace2/graph/self-component-port-input-message-iterator.h>
  28 %include <babeltrace2/graph/self-message-iterator.h>
  29
  30 /* Helper functions for Python */
  31 %{
  32 static PyObject *bt_bt2_get_user_component_from_user_msg_iter(
  33                 bt_self_message_iterator *self_message_iterator)
  34 {
  35         bt_self_component *self_component = bt_self_message_iterator_borrow_component(self_message_iterator);
  36         PyObject *py_comp;
  37
  38         BT_ASSERT(self_component);
  39         py_comp = bt_self_component_get_data(self_component);
  40         BT_ASSERT(py_comp);
  41
  42         /* Return new reference */
  43         Py_INCREF(py_comp);
  44         return py_comp;
  45 }
  46
  47 static inline
  48 PyObject *create_pylist_from_messages(bt_message_array_const messages,
  49                 uint64_t message_count)
  50 {
  51         uint64_t i;
  52         PyObject *py_msg_list = PyList_New(message_count);
  53
  54         BT_ASSERT(py_msg_list);
  55
  56         for (i = 0; i < message_count; i++) {
  57                 PyList_SET_ITEM(py_msg_list, i,
  58                                 SWIG_NewPointerObj(SWIG_as_voidptr(messages[i]),
  59                                         SWIGTYPE_p_bt_message, 0));
  60         }
  61
  62         return py_msg_list;
  63 }
  64
  65 static
  66 PyObject *get_msg_range_common(bt_message_iterator_next_status status,
  67                 bt_message_array_const messages, uint64_t message_count)
  68 {
  69         PyObject *py_status;
  70         PyObject *py_return_tuple;
  71         PyObject *py_msg_list = Py_None;
  72
  73         py_status = SWIG_From_long_SS_long(status);
  74         if (status != __BT_FUNC_STATUS_OK) {
  75                 goto end;
  76         }
  77
  78         py_msg_list = create_pylist_from_messages(messages, message_count);
  79
  80 end:
  81         py_return_tuple = PyTuple_New(2);
  82         BT_ASSERT(py_return_tuple);
  83         PyTuple_SET_ITEM(py_return_tuple, 0, py_status);
  84         PyTuple_SET_ITEM(py_return_tuple, 1, py_msg_list);
  85         return py_return_tuple;
  86 }
  87
  88 static PyObject *bt_bt2_self_component_port_input_get_msg_range(
  89                 bt_self_component_port_input_message_iterator *iter)
  90 {
  91         bt_message_array_const messages;
  92         uint64_t message_count = 0;
  93         bt_message_iterator_next_status status;
  94
  95         status = bt_self_component_port_input_message_iterator_next(iter,
  96                 &messages, &message_count);
  97         return get_msg_range_common(status, messages, message_count);
  98 }
  99
 100 static PyObject *bt_bt2_port_output_get_msg_range(
 101                 bt_port_output_message_iterator *iter)
 102 {
 103         bt_message_array_const messages;
 104         uint64_t message_count = 0;
 105         bt_message_iterator_next_status status;
 106
 107         status = bt_port_output_message_iterator_next(iter, &messages,
 108                 &message_count);
 109         return get_msg_range_common(status, messages, message_count);
 110 }
 111 %}
 112
 113 PyObject *bt_bt2_get_user_component_from_user_msg_iter(
 114     bt_self_message_iterator *self_message_iterator);
 115 PyObject *bt_bt2_self_component_port_input_get_msg_range(
 116                 bt_self_component_port_input_message_iterator *iter);
 117 PyObject *bt_bt2_port_output_get_msg_range(
 118                 bt_port_output_message_iterator *iter);