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1 office 1 /* module-test.c - test program for GMODULE
2 * Copyright (C) 1998 Tim Janik
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
16 */
17  
18 /*
19 * Modified by the GLib Team and others 1997-2000. See the AUTHORS
20 * file for a list of people on the GLib Team. See the ChangeLog
21 * files for a list of changes. These files are distributed with
22 * GLib at ftp://ftp.gtk.org/pub/gtk/.
23 */
24  
25 #undef G_DISABLE_ASSERT
26 #undef G_LOG_DOMAIN
27  
28 #include <gmodule.h>
29 #include <string.h>
30  
31 gchar* global_state;
32  
33 G_MODULE_EXPORT void g_clash_func (void);
34  
35 G_MODULE_EXPORT void
36 g_clash_func (void)
37 {
38 global_state = "global clash";
39 }
40  
41 typedef void (*SimpleFunc) (void);
42 typedef void (*GModuleFunc) (GModule *);
43  
44 static gchar **gplugin_a_state;
45 static gchar **gplugin_b_state;
46  
47 static void
48 compare (const gchar *desc, const gchar *expected, const gchar *found)
49 {
50 if (!expected && !found)
51 return;
52  
53 if (expected && found && strcmp (expected, found) == 0)
54 return;
55  
56 g_error ("error: %s state should have been \"%s\", but is \"%s\"",
57 desc, expected ? expected : "NULL", found ? found : "NULL");
58 }
59  
60 static void
61 test_states (const gchar *global, const gchar *gplugin_a,
62 const gchar *gplugin_b)
63 {
64 compare ("global", global, global_state);
65 compare ("Plugin A", gplugin_a, *gplugin_a_state);
66 compare ("Plugin B", gplugin_b, *gplugin_b_state);
67  
68 global_state = *gplugin_a_state = *gplugin_b_state = NULL;
69 }
70  
71 static SimpleFunc plugin_clash_func = NULL;
72  
73 int
74 main (int argc,
75 char **argv)
76 {
77 GModule *module_self, *module_a, *module_b;
78 gchar *plugin_a, *plugin_b;
79 SimpleFunc f_a, f_b, f_self;
80 GModuleFunc gmod_f;
81  
82 g_test_init (&argc, &argv, NULL);
83  
84 if (!g_module_supported ())
85 g_error ("dynamic modules not supported");
86  
87 plugin_a = g_test_build_filename (G_TEST_BUILT, "libmoduletestplugin_a", NULL);
88 plugin_b = g_test_build_filename (G_TEST_BUILT, "libmoduletestplugin_b", NULL);
89  
90 /* module handles */
91  
92 module_self = g_module_open (NULL, G_MODULE_BIND_LAZY);
93 if (!module_self)
94 g_error ("error: %s", g_module_error ());
95  
96 if (!g_module_symbol (module_self, "g_module_close", (gpointer *) &f_self))
97 g_error ("error: %s", g_module_error ());
98  
99 module_a = g_module_open (plugin_a, G_MODULE_BIND_LAZY);
100 if (!module_a)
101 g_error ("error: %s", g_module_error ());
102  
103 module_b = g_module_open (plugin_b, G_MODULE_BIND_LAZY);
104 if (!module_b)
105 g_error ("error: %s", g_module_error ());
106  
107 /* get plugin state vars */
108  
109 if (!g_module_symbol (module_a, "gplugin_a_state",
110 (gpointer *) &gplugin_a_state))
111 g_error ("error: %s", g_module_error ());
112  
113 if (!g_module_symbol (module_b, "gplugin_b_state",
114 (gpointer *) &gplugin_b_state))
115 g_error ("error: %s", g_module_error ());
116 test_states (NULL, NULL, "check-init");
117  
118 /* get plugin specific symbols and call them
119 */
120 if (!g_module_symbol (module_a, "gplugin_a_func", (gpointer *) &f_a))
121 g_error ("error: %s", g_module_error ());
122 test_states (NULL, NULL, NULL);
123  
124 if (!g_module_symbol (module_b, "gplugin_b_func", (gpointer *) &f_b))
125 g_error ("error: %s", g_module_error ());
126 test_states (NULL, NULL, NULL);
127  
128 f_a ();
129 test_states (NULL, "Hello world", NULL);
130  
131 f_b ();
132 test_states (NULL, NULL, "Hello world");
133  
134 /* get and call globally clashing functions
135 */
136  
137 if (!g_module_symbol (module_self, "g_clash_func", (gpointer *) &f_self))
138 g_error ("error: %s", g_module_error ());
139 test_states (NULL, NULL, NULL);
140  
141 if (!g_module_symbol (module_a, "g_clash_func", (gpointer *) &f_a))
142 g_error ("error: %s", g_module_error ());
143 test_states (NULL, NULL, NULL);
144  
145 if (!g_module_symbol (module_b, "g_clash_func", (gpointer *) &f_b))
146 g_error ("error: %s", g_module_error ());
147 test_states (NULL, NULL, NULL);
148  
149 f_self ();
150 test_states ("global clash", NULL, NULL);
151  
152 f_a ();
153 test_states (NULL, "global clash", NULL);
154  
155 f_b ();
156 test_states (NULL, NULL, "global clash");
157  
158 /* get and call clashing plugin functions */
159  
160 if (!g_module_symbol (module_a, "gplugin_clash_func", (gpointer *) &f_a))
161 g_error ("error: %s", g_module_error ());
162 test_states (NULL, NULL, NULL);
163  
164 if (!g_module_symbol (module_b, "gplugin_clash_func", (gpointer *) &f_b))
165 g_error ("error: %s", g_module_error ());
166 test_states (NULL, NULL, NULL);
167  
168 plugin_clash_func = f_a;
169 plugin_clash_func ();
170 test_states (NULL, "plugin clash", NULL);
171  
172 plugin_clash_func = f_b;
173 plugin_clash_func ();
174 test_states (NULL, NULL, "plugin clash");
175  
176 /* call gmodule function from A */
177  
178 if (!g_module_symbol (module_a, "gplugin_a_module_func", (gpointer *) &gmod_f))
179 g_error ("error: %s", g_module_error ());
180 test_states (NULL, NULL, NULL);
181  
182 gmod_f (module_b);
183 test_states (NULL, NULL, "BOOH");
184  
185 gmod_f (module_a);
186 test_states (NULL, "BOOH", NULL);
187  
188 /* unload plugins */
189  
190 if (!g_module_close (module_a))
191 g_error ("error: %s", g_module_error ());
192  
193 if (!g_module_close (module_b))
194 g_error ("error: %s", g_module_error ());
195  
196 g_free (plugin_a);
197 g_free (plugin_b);
198 g_module_close (module_self);
199 return 0;
200 }