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comparison extensions/dbg_interactive/hooks.i @ 1176:f0b328ea2fdb

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Added initial support for hooks in the dbg_interactive extension
author Sebastien Decugis <sdecugis@freediameter.net>
date Mon, 03 Jun 2013 14:18:43 +0800
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1175:2da13c87baa7 1176:f0b328ea2fdb
1 /*********************************************************************************************************
2 * Software License Agreement (BSD License) *
3 * Author: Sebastien Decugis <sdecugis@freediameter.net> *
4 * *
5 * Copyright (c) 2013, WIDE Project and NICT *
6 * All rights reserved. *
7 * *
8 * Redistribution and use of this software in source and binary forms, with or without modification, are *
9 * permitted provided that the following conditions are met: *
10 * *
11 * * Redistributions of source code must retain the above *
12 * copyright notice, this list of conditions and the *
13 * following disclaimer. *
14 * *
15 * * Redistributions in binary form must reproduce the above *
16 * copyright notice, this list of conditions and the *
17 * following disclaimer in the documentation and/or other *
18 * materials provided with the distribution. *
19 * *
20 * * Neither the name of the WIDE Project or NICT nor the *
21 * names of its contributors may be used to endorse or *
22 * promote products derived from this software without *
23 * specific prior written permission of WIDE Project and *
24 * NICT. *
25 * *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
34 *********************************************************************************************************/
35
36 /* Do not include this directly, use dbg_interactive.i instead */
37
38 /****** HOOKS *********/
39
40
41 /* Functions to handle the PMD */
42 %{
43
44 struct fd_hook_permsgdata {
45 PyObject *PyPML;
46 };
47
48 static void init_permsgdata (struct fd_hook_permsgdata * pmd) {
49 /* The PMD is None by default */
50 Py_INCREF(Py_None);
51 pmd->PyPML = Py_None;
52 }
53
54 static void fini_permsgdata (struct fd_hook_permsgdata * pmd) {
55 Py_DECREF(pmd->PyPML);
56 }
57
58 %}
59
60 struct fd_hook_data_hdl {
61 };
62
63 %nodefaultctor fd_hook_data_hdl;
64 %extend fd_hook_data_hdl {
65 fd_hook_data_hdl() {
66 struct fd_hook_data_hdl * hdl = NULL;
67 int ret;
68
69 ret = fd_hook_data_register ( sizeof(struct fd_hook_permsgdata), init_permsgdata, fini_permsgdata, &hdl );
70 if (ret != 0) {
71 DI_ERROR(ret, NULL, NULL);
72 return NULL;
73 }
74 return hdl;
75 }
76 }
77
78
79 /* Now the hook itself */
80 %{
81 static void call_the_python_hook_callback(enum fd_hook_type type, struct msg * msg, struct peer_hdr * peer, void * other, struct fd_hook_permsgdata *pmd, void * regdata) {
82 PyObject *cb, *result = NULL;
83 PyObject *PyType, *PyMsg, *PyPeer, *PyOther, *PyOldPmd;
84
85 if (!regdata) {
86 LOG_E("Internal error: missing the callback!");
87 return;
88 }
89 cb = regdata;
90
91 SWIG_PYTHON_THREAD_BEGIN_BLOCK;
92 /* Convert the arguments */
93 PyType = PyLong_FromLong(type);
94 Py_INCREF(PyType);
95
96 PyMsg = SWIG_NewPointerObj((void *) msg, SWIGTYPE_p_msg, 0 );
97
98 PyPeer = SWIG_NewPointerObj((void *) peer, SWIGTYPE_p_peer_hdr, 0 );
99 if (other == NULL) {
100 PyOther=Py_None;
101 Py_INCREF(Py_None);
102 } else {
103 switch (type) {
104 case HOOK_DATA_RECEIVED:
105 PyOther= SWIG_NewPointerObj( other, SWIGTYPE_p_fd_cnx_rcvdata, 0 );
106 break;
107
108 case HOOK_MESSAGE_RECEIVED:
109 case HOOK_MESSAGE_ROUTING_ERROR:
110 case HOOK_MESSAGE_DROPPED:
111 case HOOK_PEER_CONNECT_FAILED:
112 PyOther= SWIG_NewPointerObj( other, SWIGTYPE_p_char, 0 );
113 break;
114
115 case HOOK_MESSAGE_PARSING_ERROR:
116 if (msg) {
117 PyOther= SWIG_NewPointerObj( other, SWIGTYPE_p_char, 0 );
118 } else {
119 PyOther= SWIG_NewPointerObj( other, SWIGTYPE_p_fd_cnx_rcvdata, 0 );
120 }
121 break;
122 default:
123 /* In other cases, other should be NULL */
124 LOG_E("Internal error: got a value of *other");
125 }
126
127 }
128
129 if (pmd == NULL) {
130 Py_INCREF(Py_None);
131 PyOldPmd=Py_None;
132 } else {
133 PyOldPmd=pmd->PyPML;
134 }
135
136 /* Call the function */
137 result = PyObject_CallFunction(cb, "(OOOOO)", PyType, PyMsg, PyPeer, PyOther, PyOldPmd);
138
139 SWIG_PYTHON_THREAD_END_BLOCK;
140 if (pmd == NULL)
141 return;
142
143 Py_DECREF(pmd->PyPML);
144 Py_INCREF(result);
145 pmd->PyPML = result;
146 }
147 %}
148
149
150
151 struct fd_hook_hdl {
152 };
153
154 %nodefaultctor fd_hook_hdl;
155 %extend fd_hook_hdl {
156 fd_hook_hdl(uint32_t type_mask, PyObject * PyCb) {
157 struct fd_hook_hdl *hdl;
158 int ret;
159
160 Py_XINCREF(PyCb);
161
162 ret = fd_hook_register ( type_mask, call_the_python_hook_callback, PyCb, NULL, &hdl );
163 if (ret != 0) {
164 DI_ERROR(ret, NULL, NULL);
165 return NULL;
166 }
167 return hdl;
168 }
169 fd_hook_hdl(uint32_t type_mask, PyObject * PyCb, struct fd_hook_data_hdl *datahdl) {
170 struct fd_hook_hdl *hdl;
171 int ret;
172
173 Py_XINCREF(PyCb);
174
175 ret = fd_hook_register ( type_mask, call_the_python_hook_callback, PyCb, datahdl, &hdl );
176 if (ret != 0) {
177 DI_ERROR(ret, NULL, NULL);
178 return NULL;
179 }
180 return hdl;
181 }
182 ~fd_hook_hdl() {
183 struct fd_hook_hdl * hdl = self;
184 int ret = fd_hook_unregister(hdl);
185 if (ret != 0) {
186 DI_ERROR(ret, NULL, NULL);
187 }
188 return;
189 }
190 }
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