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
  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   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 }