annotate extensions/dbg_interactive/dispatch.i @ 639:95a784729cac

Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
author Sebastien Decugis <sdecugis@nict.go.jp>
date Mon, 20 Dec 2010 13:07:06 +0900
parents 9448cba86673
children 4a9f08d6b6ba
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
637
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1 /*********************************************************************************************************
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2 * Software License Agreement (BSD License) *
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3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> *
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4 * *
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5 * Copyright (c) 2010, WIDE Project and NICT *
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6 * All rights reserved. *
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7 * *
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8 * Redistribution and use of this software in source and binary forms, with or without modification, are *
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9 * permitted provided that the following conditions are met: *
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10 * *
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11 * * Redistributions of source code must retain the above *
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12 * copyright notice, this list of conditions and the *
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13 * following disclaimer. *
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14 * *
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15 * * Redistributions in binary form must reproduce the above *
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16 * copyright notice, this list of conditions and the *
22e8fac3b2d6 Split interface file in modules
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17 * following disclaimer in the documentation and/or other *
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18 * materials provided with the distribution. *
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19 * *
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20 * * Neither the name of the WIDE Project or NICT nor the *
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21 * names of its contributors may be used to endorse or *
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22 * promote products derived from this software without *
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23 * specific prior written permission of WIDE Project and *
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24 * NICT. *
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25 * *
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26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
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27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
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28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
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29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
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31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
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33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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34 *********************************************************************************************************/
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35
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36 /* Do not include this directly, use dbg_interactive.i instead */
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37
638
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38 /****** DISPATCH *********/
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39
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40
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41 %{
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42 /* call it (will be called from a different thread than the interpreter, when message arrives) */
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43 static int call_the_python_dispatch_callback(struct msg **msg, struct avp *avp, struct session *session, void * pycb, enum disp_action *action) {
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44 PyObject *PyMsg, *PyAvp, *PySess;
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45 PyObject *cb, *result = NULL;
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46 int ret = 0;
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47
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48 if (!pycb) {
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49 fd_log_debug("Internal error: missing the callback!\n");
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50 return ENOTSUP;
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51 }
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52 cb = pycb;
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53
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54 SWIG_PYTHON_THREAD_BEGIN_BLOCK;
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55 /* Convert the arguments */
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56 PyMsg = SWIG_NewPointerObj((void *)*msg, SWIGTYPE_p_msg, 0 );
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57 PyAvp = SWIG_NewPointerObj((void *) avp, SWIGTYPE_p_avp, 0 );
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58 PySess = SWIG_NewPointerObj((void *) session, SWIGTYPE_p_session, 0 );
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59
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60 /* Call the function */
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61 result = PyEval_CallFunction(cb, "(OOO)", PyMsg, PyAvp, PySess);
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62
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63 /* The result is supposedly composed of: [ ret, *msg, *action ] */
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64 if ((result == NULL) || (!PyList_Check(result)) || (PyList_Size(result) != 3)) {
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65 fd_log_debug("Error: The Python callback did not return [ ret, msg, action ].\n");
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66 ret = EINVAL;
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67 goto out;
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68 }
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69
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70 /* Convert the return values */
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71 if (!SWIG_IsOK(SWIG_AsVal_int(PyList_GetItem(result, 0), &ret))) {
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72 fd_log_debug("Error: Cannot convert the first return value to integer.\n");
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73 ret = EINVAL;
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74 goto out;
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75 }
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76 if (ret) {
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77 TRACE_DEBUG(INFO, "The Python callback returned the error code %d (%s)\n", ret, strerror(ret));
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78 goto out;
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79 }
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80
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81 if (!SWIG_IsOK(SWIG_ConvertPtr(PyList_GetItem(result, 1), (void *)msg, SWIGTYPE_p_msg, SWIG_POINTER_DISOWN))) {
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82 fd_log_debug("Error: Cannot convert the second return value to message.\n");
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83 ret = EINVAL;
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84 goto out;
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85 }
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86
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87 if (!SWIG_IsOK(SWIG_AsVal_int(PyList_GetItem(result, 2), (int *)action))) {
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88 fd_log_debug("Error: Cannot convert the third return value to integer.\n");
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89 ret = EINVAL;
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90 goto out;
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91 }
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92
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93 TRACE_DEBUG(FULL, "Python callback return: *action = %d\n", *action);
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94 out:
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95 Py_XDECREF(result);
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96
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97 SWIG_PYTHON_THREAD_END_BLOCK;
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98 return ret;
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99 }
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100 %}
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101
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102 struct disp_hdl {
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103 };
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104
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105 %nodefaultctor disp_hdl;
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106 %extend disp_hdl {
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107 disp_hdl(PyObject * PyCb, enum disp_how how, struct disp_when * when) {
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108 struct disp_hdl * hdl = NULL;
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109 int ret;
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110
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111 Py_XINCREF(PyCb);
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112
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113 ret = fd_disp_register ( call_the_python_dispatch_callback, how, when, PyCb, &hdl );
638
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114 if (ret != 0) {
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115 DI_ERROR(ret, NULL, NULL);
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116 return NULL;
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117 }
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118 return hdl;
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119 }
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120 ~disp_hdl() {
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121 struct disp_hdl * hdl = self;
639
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122 PyObject * cb = NULL;
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123 int ret = fd_disp_unregister(&hdl, (void *)&cb);
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124 if (ret != 0) {
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125 DI_ERROR(ret, NULL, NULL);
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126 }
639
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127 Py_XDECREF(cb);
638
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128 return;
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129 }
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130 }
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131
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132
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133 %extend disp_when {
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134 disp_when(struct dict_object * app = NULL, struct dict_object * command = NULL, struct dict_object * avp = NULL, struct dict_object * value = NULL) {
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135 struct disp_when * w = (struct disp_when *)calloc(1, sizeof(struct disp_when));
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136 if (!w) {
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137 DI_ERROR_MALLOC;
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138 return NULL;
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139 }
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140 w->app = app;
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141 w->command = command;
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142 w->avp = avp;
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143 w->value = value;
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144 return w;
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145 }
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146 }
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