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, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
19
20 /*
21 * Modified by the GLib Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GLib Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GLib at ftp://ftp.gtk.org/pub/gtk/.
25 */
26
27 #undef G_DISABLE_ASSERT
28 #undef G_LOG_DOMAIN
29
30 #include <gmodule.h>
31 #include <string.h>
32
33 gchar* global_state;
34
35 G_MODULE_EXPORT void
g_clash_func(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
compare(const gchar * desc,const gchar * expected,const gchar * found)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
test_states(const gchar * global,const gchar * gplugin_a,const gchar * gplugin_b)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
main(int arg,char * argv[])74 main (int arg,
75 char *argv[])
76 {
77 GModule *module_self, *module_a, *module_b;
78 gchar *dir;
79 gchar *plugin_a, *plugin_b;
80 SimpleFunc f_a, f_b, f_self;
81 GModuleFunc gmod_f;
82
83 if (!g_module_supported ())
84 g_error ("dynamic modules not supported");
85
86 dir = g_get_current_dir ();
87
88 plugin_a = g_strconcat (dir, G_DIR_SEPARATOR_S "libmoduletestplugin_a",
89 NULL);
90 plugin_b = g_strconcat (dir, G_DIR_SEPARATOR_S "libmoduletestplugin_b",
91 NULL);
92
93 g_free (dir);
94
95 /* module handles */
96
97 module_self = g_module_open (NULL, G_MODULE_BIND_LAZY);
98 if (!module_self)
99 g_error ("error: %s", g_module_error ());
100
101 if (!g_module_symbol (module_self, "g_module_close", (gpointer *) &f_self))
102 g_error ("error: %s", g_module_error ());
103
104 module_a = g_module_open (plugin_a, G_MODULE_BIND_LAZY);
105 if (!module_a)
106 g_error ("error: %s", g_module_error ());
107
108 module_b = g_module_open (plugin_b, G_MODULE_BIND_LAZY);
109 if (!module_b)
110 g_error ("error: %s", g_module_error ());
111
112 /* get plugin state vars */
113
114 if (!g_module_symbol (module_a, "gplugin_a_state",
115 (gpointer *) &gplugin_a_state))
116 g_error ("error: %s", g_module_error ());
117
118 if (!g_module_symbol (module_b, "gplugin_b_state",
119 (gpointer *) &gplugin_b_state))
120 g_error ("error: %s", g_module_error ());
121 test_states (NULL, NULL, "check-init");
122
123 /* get plugin specific symbols and call them
124 */
125 if (!g_module_symbol (module_a, "gplugin_a_func", (gpointer *) &f_a))
126 g_error ("error: %s", g_module_error ());
127 test_states (NULL, NULL, NULL);
128
129 if (!g_module_symbol (module_b, "gplugin_b_func", (gpointer *) &f_b))
130 g_error ("error: %s", g_module_error ());
131 test_states (NULL, NULL, NULL);
132
133 f_a ();
134 test_states (NULL, "Hello world", NULL);
135
136 f_b ();
137 test_states (NULL, NULL, "Hello world");
138
139 /* get and call globally clashing functions
140 */
141
142 if (!g_module_symbol (module_self, "g_clash_func", (gpointer *) &f_self))
143 g_error ("error: %s", g_module_error ());
144 test_states (NULL, NULL, NULL);
145
146 if (!g_module_symbol (module_a, "g_clash_func", (gpointer *) &f_a))
147 g_error ("error: %s", g_module_error ());
148 test_states (NULL, NULL, NULL);
149
150 if (!g_module_symbol (module_b, "g_clash_func", (gpointer *) &f_b))
151 g_error ("error: %s", g_module_error ());
152 test_states (NULL, NULL, NULL);
153
154 f_self ();
155 test_states ("global clash", NULL, NULL);
156
157 f_a ();
158 test_states (NULL, "global clash", NULL);
159
160 f_b ();
161 test_states (NULL, NULL, "global clash");
162
163 /* get and call clashing plugin functions */
164
165 if (!g_module_symbol (module_a, "gplugin_clash_func", (gpointer *) &f_a))
166 g_error ("error: %s", g_module_error ());
167 test_states (NULL, NULL, NULL);
168
169 if (!g_module_symbol (module_b, "gplugin_clash_func", (gpointer *) &f_b))
170 g_error ("error: %s", g_module_error ());
171 test_states (NULL, NULL, NULL);
172
173 plugin_clash_func = f_a;
174 plugin_clash_func ();
175 test_states (NULL, "plugin clash", NULL);
176
177 plugin_clash_func = f_b;
178 plugin_clash_func ();
179 test_states (NULL, NULL, "plugin clash");
180
181 /* call gmodule function from A */
182
183 if (!g_module_symbol (module_a, "gplugin_a_module_func", (gpointer *) &gmod_f))
184 g_error ("error: %s", g_module_error ());
185 test_states (NULL, NULL, NULL);
186
187 gmod_f (module_b);
188 test_states (NULL, NULL, "BOOH");
189
190 gmod_f (module_a);
191 test_states (NULL, "BOOH", NULL);
192
193 /* unload plugins */
194
195 if (!g_module_close (module_a))
196 g_error ("error: %s", g_module_error ());
197
198 if (!g_module_close (module_b))
199 g_error ("error: %s", g_module_error ());
200
201 return 0;
202 }
203