glib/gmodule/gmodule-beos.c
CDT 1999 Shawn T. Amundson 499c9786d1 Port to BeOS by myself and Richard Offer.
Sat May  8 01:52:29 CDT 1999 Shawn T. Amundson <amundson@gtk.org>

        * configure.in
          gerror.c
          gmain.c
          gstrfuncs.c
          gutils.c
          ltconfig
          ltmain.sh
          gmodule/Makefile.am
          gmodule/gmodule.c
          gmodule/gmoduleconf.h.in
          gmodule/gmodule-beos.c
          gthread/Makefile.am: Port to BeOS by myself and Richard Offer.
1999-05-08 07:40:44 +00:00

172 lines
4.4 KiB
C

/* GMODULE - GLIB wrapper code for dynamic module loading
* Copyright (C) 1998 Tim Janik
*
* BeOS GMODULE implementation
* Copyright (C) 1999 Richard Offer and Shawn T. Amundson (amundson@gtk.org)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
/*
* MT safe
*/
#include <be/kernel/image.h> /* image (aka DSO) handling functions... */
/*
* The BeOS doesn't use the same symantics as Unix's dlopen....
*
*/
#ifndef RTLD_GLOBAL
#define RTLD_GLOBAL 0
#endif /* RTLD_GLOBAL */
#ifndef RTLD_LAZY
#define RTLD_LAZY 1
#endif /* RTLD_LAZY */
#ifndef RTLD_NOW
#define RTLD_NOW 0
#endif /* RTLD_NOW */
/*
* Points to Ponder
*
* You can load the same DSO more than once, in which case you'll have
* different image_id's. While this means that we don't have to worry about
* reference counts, it could lead to problems in the future....
* richard.
*/
#include <Errors.h>
#include <stdio.h>
/* --- functions --- */
static gpointer
_g_module_open (const gchar *file_name,
gboolean bind_lazy)
{
image_id handle;
handle = load_add_on (file_name);
if (handle < B_OK) {
g_module_set_error (g_strdup_printf("failed to load_add_on(%s), reason: %s",
(gchar *) file_name, strerror(handle)));
return NULL;
}
return (gpointer) handle;
}
static gpointer
_g_module_self (void)
{
image_info info;
int32 cookie = 0;
status_t status;
/* Is it always the first one? I'm guessing yes. */
if ((status = get_next_image_info(0, &cookie, &info)) == B_OK)
return (gpointer) info.id;
else
{
g_module_set_error (g_strdup_printf("get_next_image_info() for self failed, reason: %s", strerror(status)));
return NULL;
}
}
static void
_g_module_close (gpointer handle,
gboolean is_unref)
{
image_info info;
gchar *name;
if (unload_add_on((image_id) handle) != B_OK)
{
/* Try and get the name of the image. */
if (get_image_info((image_id) handle, &info) != B_OK)
name = g_strdup("(unknown)");
else
name = g_strdup (info.name);
g_module_set_error (g_strdup_printf("failed to unload_add_on(%s)",
name));
g_free (name);
}
}
static gpointer
_g_module_symbol (gpointer handle,
const gchar *symbol_name)
{
image_id id;
gpointer p;
status_t status;
image_info info;
gchar name[256];
int32 name_len;
int32 type;
int32 n;
id = (image_id) handle;
if ((status = get_image_info(id, &info)) != B_OK)
{
g_module_set_error (g_strdup_printf("failed get_image_info(), reason: %s", strerror(status)));
return NULL;
}
name_len = 256;
type = B_SYMBOL_TYPE_ANY;
n = 0;
while ((status = get_nth_image_symbol(id, n, name, &name_len, &type, (void **)&p)) == B_OK)
{
if (!strncmp (name, symbol_name, strlen(symbol_name)))
{
return p;
}
if (!strcmp (name, "_end"))
{
g_module_set_error (g_strdup_printf("g_module_symbol(): no symbol matching '%s'", symbol_name));
return NULL;
}
name_len = 256;
type = B_SYMBOL_TYPE_ANY;
n++;
}
g_module_set_error (g_strdup_printf("failed get_image_symbol(%s), reason: %s", symbol_name, strerror(status)));
return NULL;
}
static gchar*
_g_module_build_path (const gchar *directory,
const gchar *module_name)
{
printf("WARNING: _g_module_build_path() untested!\n");
if (directory && *directory) {
if (strncmp (module_name, "lib", 3) == 0)
return g_strconcat (directory, "/", module_name, NULL);
else
return g_strconcat (directory, "/lib", module_name, ".so", NULL);
} else if (strncmp (module_name, "lib", 3) == 0)
return g_strdup (module_name);
else
return g_strconcat ("lib", module_name, ".so", NULL);
}