release/src/router/glib/gmodule/testgmodule.c

   1 /* testgmodule.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 Library 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  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library 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 1997-1999.  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_LOG_DOMAIN
  28 #include        <gmodule.h>
  29 #include        "gmoduleconf.h"
  30
  31
  32 G_MODULE_EXPORT void
  33 g_clash_func (void)
  34 {
  35   g_print ("GModule: Hello global clash\n");
  36 }
  37
  38 typedef void (*SimpleFunc) (void);
  39 typedef void (*GModuleFunc) (GModule *);
  40
  41 static SimpleFunc plugin_clash_func = NULL;
  42
  43 int
  44 main (int   arg,
  45       char *argv[])
  46 {
  47   GModule *module_self, *module_a, *module_b;
  48   gchar *string;
  49   gchar *plugin_a, *plugin_b;
  50   SimpleFunc f_a, f_b, f_self;
  51   GModuleFunc gmod_f;
  52
  53   string = g_get_current_dir ();
  54   g_print ("testgmodule (%s):\n", string);
  55
  56 #ifdef NATIVE_WIN32
  57   plugin_a = g_strconcat (string, "\\libgplugin_a.dll", NULL);
  58   plugin_b = g_strconcat (string, "\\libgplugin_b.dll", NULL);
  59 #elif (G_MODULE_IMPL == G_MODULE_IMPL_DLD)
  60   plugin_a = g_strconcat (string, "/.libs/", "libgplugin_a.sl", NULL);
  61   plugin_b = g_strconcat (string, "/.libs/", "libgplugin_b.sl", NULL);
  62 #else /* G_MODULE_IMPL != G_MODULE_IMPL_DLD && !NATIVE_WIN32 */
  63   plugin_a = g_strconcat (string, "/.libs/", "libgplugin_a.so", NULL);
  64   plugin_b = g_strconcat (string, "/.libs/", "libgplugin_b.so", NULL);
  65 #endif /* G_MODULE_IMPL != G_MODULE_IMPL_DLD && !NATIVE_WIN32 */
  66   g_free (string);
  67
  68   /* module handles
  69    */
  70   g_print ("get main module handle\n");
  71   module_self = g_module_open (NULL, G_MODULE_BIND_LAZY);
  72   if (!module_self)
  73     {
  74       g_print ("error: %s\n", g_module_error ());
  75       return 1;
  76     }
  77   g_print ("check that not yet bound symbols in shared libraries of main module are retrievable:\n");
  78   string = "g_module_close";
  79   g_print ("retrive symbol `%s' from \"%s\":\n", string, g_basename (g_module_name (module_self)));
  80   if (!g_module_symbol (module_self, string, (gpointer) &f_self))
  81     {
  82       g_print ("error: %s\n", g_module_error ());
  83       return 1;
  84     }
  85   g_print ("retrived symbol `%s' as %p\n", string, f_self);
  86   g_print ("load plugin from \"%s\"\n", plugin_a);
  87   module_a = g_module_open (plugin_a, G_MODULE_BIND_LAZY);
  88   if (!module_a)
  89     {
  90       g_print ("error: %s\n", g_module_error ());
  91       return 1;
  92     }
  93   g_print ("load plugin from \"%s\"\n", plugin_b);
  94   module_b = g_module_open (plugin_b, G_MODULE_BIND_LAZY);
  95   if (!module_b)
  96     {
  97       g_print ("error: %s\n", g_module_error ());
  98       return 1;
  99     }
 100
 101   /* get plugin specific symbols and call them
 102    */
 103   string = "gplugin_a_func";
 104   g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a)));
 105   if (!g_module_symbol (module_a, string, (gpointer) &f_a))
 106     {
 107       g_print ("error: %s\n", g_module_error ());
 108       return 1;
 109     }
 110   string = "gplugin_b_func";
 111   g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_b)));
 112   if (!g_module_symbol (module_b, string, (gpointer) &f_b))
 113     {
 114       g_print ("error: %s\n", g_module_error ());
 115       return 1;
 116     }
 117   g_print ("call plugin function(%p) A: ", f_a);
 118   f_a ();
 119   g_print ("call plugin function(%p) B: ", f_b);
 120   f_b ();
 121
 122   /* get and call globally clashing functions
 123    */
 124   string = "g_clash_func";
 125   g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_self)));
 126   if (!g_module_symbol (module_self, string, (gpointer) &f_self))
 127     {
 128       g_print ("error: %s\n", g_module_error ());
 129       return 1;
 130     }
 131   g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a)));
 132   if (!g_module_symbol (module_a, string, (gpointer) &f_a))
 133     {
 134       g_print ("error: %s\n", g_module_error ());
 135       return 1;
 136     }
 137   g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_b)));
 138   if (!g_module_symbol (module_b, string, (gpointer) &f_b))
 139     {
 140       g_print ("error: %s\n", g_module_error ());
 141       return 1;
 142     }
 143   g_print ("call plugin function(%p) self: ", f_self);
 144   f_self ();
 145   g_print ("call plugin function(%p) A: ", f_a);
 146   f_a ();
 147   g_print ("call plugin function(%p) B: ", f_b);
 148   f_b ();
 149
 150   /* get and call clashing plugin functions
 151    */
 152   string = "gplugin_clash_func";
 153   g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_self)));
 154   if (!g_module_symbol (module_self, string, (gpointer) &f_self))
 155     f_self = NULL;
 156   g_print ("retrived function `%s' from self: %p\n", string, f_self);
 157   g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a)));
 158   if (!g_module_symbol (module_a, string, (gpointer) &f_a))
 159     {
 160       g_print ("error: %s\n", g_module_error ());
 161       return 1;
 162     }
 163   g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_b)));
 164   if (!g_module_symbol (module_b, string, (gpointer) &f_b))
 165     {
 166       g_print ("error: %s\n", g_module_error ());
 167       return 1;
 168     }
 169   g_print ("call plugin function(%p) A: ", f_a);
 170   plugin_clash_func = f_a;
 171   plugin_clash_func ();
 172   g_print ("call plugin function(%p) B: ", f_b);
 173   plugin_clash_func = f_b;
 174   plugin_clash_func ();
 175
 176   /* call gmodule function form A
 177    */
 178   string = "gplugin_a_module_func";
 179   g_print ("retrive symbol `%s' from \"%s\"\n", string, g_basename (g_module_name (module_a)));
 180   if (!g_module_symbol (module_a, string, (gpointer) &gmod_f))
 181     {
 182       g_print ("error: %s\n", g_module_error ());
 183       return 1;
 184     }
 185   g_print ("call plugin A's module function(%p):\n{\n", gmod_f);
 186   gmod_f (module_b);
 187   g_print ("}\n");
 188
 189
 190   /* unload plugins
 191    */
 192   g_print ("unload plugin A:\n");
 193   if (!g_module_close (module_a))
 194     g_print ("error: %s\n", g_module_error ());
 195   g_print ("unload plugin B:\n");
 196   if (!g_module_close (module_b))
 197     g_print ("error: %s\n", g_module_error ());
 198
 199 #if 0
 200   g_log_set_fatal_mask ("GModule", G_LOG_FATAL_MASK|G_LOG_LEVEL_WARNING);
 201   g_module_symbol (0, 0, 0);
 202   g_warning("jahooo");
 203   g_on_error_query (".libs/testgmodule");
 204 #endif
 205
 206   return 0;
 207 }