tests/module-test.c

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