src/bindings/python/bt2/bt2/native_bt_trace_class.i.h

   1 /*
   2  * The MIT License (MIT)
   3  *
   4  * Copyright (c) 2016 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 static void
  26 trace_class_destroyed_listener(const bt_trace_class *trace_class, void *py_callable)
  27 {
  28         PyObject *py_trace_class_ptr = NULL;
  29         PyObject *py_res = NULL;
  30
  31         py_trace_class_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(trace_class),
  32                 SWIGTYPE_p_bt_trace_class, 0);
  33         if (!py_trace_class_ptr) {
  34                 BT_LOGF_STR("Failed to create a SWIG pointer object.");
  35                 abort();
  36         }
  37
  38         py_res = PyObject_CallFunction(py_callable, "(O)", py_trace_class_ptr);
  39         if (py_res) {
  40                 BT_ASSERT(py_res == Py_None);
  41         } else {
  42                 loge_exception_append_cause(
  43                         "Trace class's destruction listener (Python)",
  44                         BT_LOG_OUTPUT_LEVEL);
  45         }
  46
  47         Py_DECREF(py_trace_class_ptr);
  48         Py_XDECREF(py_res);
  49 }
  50
  51 static
  52 int bt_bt2_trace_class_add_destruction_listener(
  53                 bt_trace_class *trace_class, PyObject *py_callable,
  54                 bt_listener_id *id)
  55 {
  56         bt_trace_class_add_listener_status status;
  57
  58         BT_ASSERT(trace_class);
  59         BT_ASSERT(py_callable);
  60         status = bt_trace_class_add_destruction_listener(
  61                 trace_class, trace_class_destroyed_listener, py_callable, id);
  62         if (status == __BT_FUNC_STATUS_OK) {
  63                 Py_INCREF(py_callable);
  64         }
  65
  66         return status;
  67 }