1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/* module-test.c - test program for GMODULE
* Copyright (C) 1998 Tim Janik
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
#undef G_DISABLE_ASSERT
#undef G_LOG_DOMAIN
#include <gmodule.h>
#include <string.h>
gchar* global_state;
G_MODULE_EXPORT void
g_clash_func (void)
{
global_state = "global clash";
}
typedef void (*SimpleFunc) (void);
typedef void (*GModuleFunc) (GModule *);
static gchar **gplugin_a_state;
static gchar **gplugin_b_state;
static void
compare (const gchar *desc, const gchar *expected, const gchar *found)
{
if (!expected && !found)
return;
if (expected && found && strcmp (expected, found) == 0)
return;
g_error ("error: %s state should have been \"%s\", but is \"%s\"",
desc, expected ? expected : "NULL", found ? found : "NULL");
}
static void
test_states (const gchar *global, const gchar *gplugin_a,
const gchar *gplugin_b)
{
compare ("global", global, global_state);
compare ("Plugin A", gplugin_a, *gplugin_a_state);
compare ("Plugin B", gplugin_b, *gplugin_b_state);
global_state = *gplugin_a_state = *gplugin_b_state = NULL;
}
static SimpleFunc plugin_clash_func = NULL;
int
main (int arg,
char *argv[])
{
GModule *module_self, *module_a, *module_b;
gchar *dir;
gchar *plugin_a, *plugin_b;
SimpleFunc f_a, f_b, f_self;
GModuleFunc gmod_f;
if (!g_module_supported ())
g_error ("dynamic modules not supported");
dir = g_get_current_dir ();
plugin_a = g_strconcat (dir, G_DIR_SEPARATOR_S "libmoduletestplugin_a",
NULL);
plugin_b = g_strconcat (dir, G_DIR_SEPARATOR_S "libmoduletestplugin_b",
NULL);
g_free (dir);
/* module handles */
module_self = g_module_open (NULL, G_MODULE_BIND_LAZY);
if (!module_self)
g_error ("error: %s", g_module_error ());
if (!g_module_symbol (module_self, "g_module_close", (gpointer *) &f_self))
g_error ("error: %s", g_module_error ());
module_a = g_module_open (plugin_a, G_MODULE_BIND_LAZY);
if (!module_a)
g_error ("error: %s", g_module_error ());
module_b = g_module_open (plugin_b, G_MODULE_BIND_LAZY);
if (!module_b)
g_error ("error: %s", g_module_error ());
/* get plugin state vars */
if (!g_module_symbol (module_a, "gplugin_a_state",
(gpointer *) &gplugin_a_state))
g_error ("error: %s", g_module_error ());
if (!g_module_symbol (module_b, "gplugin_b_state",
(gpointer *) &gplugin_b_state))
g_error ("error: %s", g_module_error ());
test_states (NULL, NULL, "check-init");
/* get plugin specific symbols and call them
*/
if (!g_module_symbol (module_a, "gplugin_a_func", (gpointer *) &f_a))
g_error ("error: %s", g_module_error ());
test_states (NULL, NULL, NULL);
if (!g_module_symbol (module_b, "gplugin_b_func", (gpointer *) &f_b))
g_error ("error: %s", g_module_error ());
test_states (NULL, NULL, NULL);
f_a ();
test_states (NULL, "Hello world", NULL);
f_b ();
test_states (NULL, NULL, "Hello world");
/* get and call globally clashing functions
*/
if (!g_module_symbol (module_self, "g_clash_func", (gpointer *) &f_self))
g_error ("error: %s", g_module_error ());
test_states (NULL, NULL, NULL);
if (!g_module_symbol (module_a, "g_clash_func", (gpointer *) &f_a))
g_error ("error: %s", g_module_error ());
test_states (NULL, NULL, NULL);
if (!g_module_symbol (module_b, "g_clash_func", (gpointer *) &f_b))
g_error ("error: %s", g_module_error ());
test_states (NULL, NULL, NULL);
f_self ();
test_states ("global clash", NULL, NULL);
f_a ();
test_states (NULL, "global clash", NULL);
f_b ();
test_states (NULL, NULL, "global clash");
/* get and call clashing plugin functions */
if (!g_module_symbol (module_a, "gplugin_clash_func", (gpointer *) &f_a))
g_error ("error: %s", g_module_error ());
test_states (NULL, NULL, NULL);
if (!g_module_symbol (module_b, "gplugin_clash_func", (gpointer *) &f_b))
g_error ("error: %s", g_module_error ());
test_states (NULL, NULL, NULL);
plugin_clash_func = f_a;
plugin_clash_func ();
test_states (NULL, "plugin clash", NULL);
plugin_clash_func = f_b;
plugin_clash_func ();
test_states (NULL, NULL, "plugin clash");
/* call gmodule function from A */
if (!g_module_symbol (module_a, "gplugin_a_module_func", (gpointer *) &gmod_f))
g_error ("error: %s", g_module_error ());
test_states (NULL, NULL, NULL);
gmod_f (module_b);
test_states (NULL, NULL, "BOOH");
gmod_f (module_a);
test_states (NULL, "BOOH", NULL);
/* unload plugins */
if (!g_module_close (module_a))
g_error ("error: %s", g_module_error ());
if (!g_module_close (module_b))
g_error ("error: %s", g_module_error ());
return 0;
}
|
