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 2.1 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 #ifdef _MSC_VER
32 # define MODULE_FILENAME_PREFIX ""
33 #else
34 # define MODULE_FILENAME_PREFIX "lib"
35 #endif
36
37 gchar* global_state;
38
39 G_MODULE_EXPORT void g_clash_func (void);
40
41 G_MODULE_EXPORT void
g_clash_func(void)42 g_clash_func (void)
43 {
44 global_state = "global clash";
45 }
46
47 typedef void (*SimpleFunc) (void);
48 typedef void (*GModuleFunc) (GModule *);
49
50 static gchar **gplugin_a_state;
51 static gchar **gplugin_b_state;
52
53 static void
compare(const gchar * desc,const gchar * expected,const gchar * found)54 compare (const gchar *desc, const gchar *expected, const gchar *found)
55 {
56 if (!expected && !found)
57 return;
58
59 if (expected && found && strcmp (expected, found) == 0)
60 return;
61
62 g_error ("error: %s state should have been \"%s\", but is \"%s\"",
63 desc, expected ? expected : "NULL", found ? found : "NULL");
64 }
65
66 static void
test_states(const gchar * global,const gchar * gplugin_a,const gchar * gplugin_b)67 test_states (const gchar *global, const gchar *gplugin_a,
68 const gchar *gplugin_b)
69 {
70 compare ("global", global, global_state);
71 compare ("Plugin A", gplugin_a, *gplugin_a_state);
72 compare ("Plugin B", gplugin_b, *gplugin_b_state);
73
74 global_state = *gplugin_a_state = *gplugin_b_state = NULL;
75 }
76
77 static SimpleFunc plugin_clash_func = NULL;
78
79 int
main(int argc,char ** argv)80 main (int argc,
81 char **argv)
82 {
83 GModule *module_self, *module_a, *module_b;
84 gchar *plugin_a, *plugin_b;
85 SimpleFunc f_a, f_b, f_self;
86 GModuleFunc gmod_f;
87
88 g_test_init (&argc, &argv, NULL);
89
90 if (!g_module_supported ())
91 g_error ("dynamic modules not supported");
92
93 plugin_a = g_test_build_filename (G_TEST_BUILT, MODULE_FILENAME_PREFIX "moduletestplugin_a_" MODULE_TYPE, NULL);
94 plugin_b = g_test_build_filename (G_TEST_BUILT, MODULE_FILENAME_PREFIX "moduletestplugin_b_" MODULE_TYPE, NULL);
95
96 /* module handles */
97
98 module_self = g_module_open (NULL, G_MODULE_BIND_LAZY);
99 if (!module_self)
100 g_error ("error: %s", g_module_error ());
101
102 if (!g_module_symbol (module_self, "g_module_close", (gpointer *) &f_self))
103 g_error ("error: %s", g_module_error ());
104
105 module_a = g_module_open (plugin_a, G_MODULE_BIND_LAZY);
106 if (!module_a)
107 g_error ("error: %s", g_module_error ());
108
109 module_b = g_module_open (plugin_b, G_MODULE_BIND_LAZY);
110 if (!module_b)
111 g_error ("error: %s", g_module_error ());
112
113 /* get plugin state vars */
114
115 if (!g_module_symbol (module_a, "gplugin_a_state",
116 (gpointer *) &gplugin_a_state))
117 g_error ("error: %s", g_module_error ());
118
119 if (!g_module_symbol (module_b, "gplugin_b_state",
120 (gpointer *) &gplugin_b_state))
121 g_error ("error: %s", g_module_error ());
122 test_states (NULL, NULL, "check-init");
123
124 /* get plugin specific symbols and call them
125 */
126 if (!g_module_symbol (module_a, "gplugin_a_func", (gpointer *) &f_a))
127 g_error ("error: %s", g_module_error ());
128 test_states (NULL, NULL, NULL);
129
130 if (!g_module_symbol (module_b, "gplugin_b_func", (gpointer *) &f_b))
131 g_error ("error: %s", g_module_error ());
132 test_states (NULL, NULL, NULL);
133
134 f_a ();
135 test_states (NULL, "Hello world", NULL);
136
137 f_b ();
138 test_states (NULL, NULL, "Hello world");
139
140 /* get and call globally clashing functions
141 */
142
143 if (!g_module_symbol (module_self, "g_clash_func", (gpointer *) &f_self))
144 g_error ("error: %s", g_module_error ());
145 test_states (NULL, NULL, NULL);
146
147 if (!g_module_symbol (module_a, "g_clash_func", (gpointer *) &f_a))
148 g_error ("error: %s", g_module_error ());
149 test_states (NULL, NULL, NULL);
150
151 if (!g_module_symbol (module_b, "g_clash_func", (gpointer *) &f_b))
152 g_error ("error: %s", g_module_error ());
153 test_states (NULL, NULL, NULL);
154
155 f_self ();
156 test_states ("global clash", NULL, NULL);
157
158 f_a ();
159 test_states (NULL, "global clash", NULL);
160
161 f_b ();
162 test_states (NULL, NULL, "global clash");
163
164 /* get and call clashing plugin functions */
165
166 if (!g_module_symbol (module_a, "gplugin_clash_func", (gpointer *) &f_a))
167 g_error ("error: %s", g_module_error ());
168 test_states (NULL, NULL, NULL);
169
170 if (!g_module_symbol (module_b, "gplugin_clash_func", (gpointer *) &f_b))
171 g_error ("error: %s", g_module_error ());
172 test_states (NULL, NULL, NULL);
173
174 plugin_clash_func = f_a;
175 plugin_clash_func ();
176 test_states (NULL, "plugin clash", NULL);
177
178 plugin_clash_func = f_b;
179 plugin_clash_func ();
180 test_states (NULL, NULL, "plugin clash");
181
182 /* call gmodule function from A */
183
184 if (!g_module_symbol (module_a, "gplugin_a_module_func", (gpointer *) &gmod_f))
185 g_error ("error: %s", g_module_error ());
186 test_states (NULL, NULL, NULL);
187
188 gmod_f (module_b);
189 test_states (NULL, NULL, "BOOH");
190
191 gmod_f (module_a);
192 test_states (NULL, "BOOH", NULL);
193
194 /* unload plugins */
195
196 if (!g_module_close (module_a))
197 g_error ("error: %s", g_module_error ());
198
199 if (!g_module_close (module_b))
200 g_error ("error: %s", g_module_error ());
201
202 g_free (plugin_a);
203 g_free (plugin_b);
204 g_module_close (module_self);
205 return 0;
206 }
207