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/* GMODULE - GLIB wrapper code for dynamic module loading * 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 2.1 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, see <http://www.gnu.org/licenses/>. */ /* * 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/. */ #ifndef __GMODULE_H__ #define __GMODULE_H__ #include <glib.h> G_BEGIN_DECLS /* exporting and importing functions, this is special cased * to feature Windows dll stubs. */ #define G_MODULE_IMPORT extern #ifdef G_PLATFORM_WIN32 # define G_MODULE_EXPORT __declspec(dllexport) #elif __GNUC__ >= 4 # define G_MODULE_EXPORT __attribute__((visibility("default"))) #else /* !G_PLATFORM_WIN32 && __GNUC__ < 4 */ # define G_MODULE_EXPORT #endif /* !G_PLATFORM_WIN32 */ /** * GModuleFlags: * @G_MODULE_BIND_LAZY: specifies that symbols are only resolved when * needed. The default action is to bind all symbols when the module * is loaded. * @G_MODULE_BIND_LOCAL: specifies that symbols in the module should * not be added to the global name space. The default action on most * platforms is to place symbols in the module in the global name space, * which may cause conflicts with existing symbols. * @G_MODULE_BIND_MASK: mask for all flags. * * Flags passed to g_module_open(). * Note that these flags are not supported on all platforms. */ typedef enum { G_MODULE_BIND_LAZY = 1 << 0, G_MODULE_BIND_LOCAL = 1 << 1, G_MODULE_BIND_MASK = 0x03 } GModuleFlags; typedef struct _GModule GModule; typedef const gchar* (*GModuleCheckInit) (GModule *module); typedef void (*GModuleUnload) (GModule *module); /* return TRUE if dynamic module loading is supported */ GLIB_AVAILABLE_IN_ALL gboolean g_module_supported (void) G_GNUC_CONST; /* open a module 'file_name' and return handle, which is NULL on error */ GLIB_AVAILABLE_IN_ALL GModule* g_module_open (const gchar *file_name, GModuleFlags flags); /* close a previously opened module, returns TRUE on success */ GLIB_AVAILABLE_IN_ALL gboolean g_module_close (GModule *module); /* make a module resident so g_module_close on it will be ignored */ GLIB_AVAILABLE_IN_ALL void g_module_make_resident (GModule *module); /* query the last module error as a string */ GLIB_AVAILABLE_IN_ALL const gchar * g_module_error (void); /* retrieve a symbol pointer from 'module', returns TRUE on success */ GLIB_AVAILABLE_IN_ALL gboolean g_module_symbol (GModule *module, const gchar *symbol_name, gpointer *symbol); /* retrieve the file name from an existing module */ GLIB_AVAILABLE_IN_ALL const gchar * g_module_name (GModule *module); /* Build the actual file name containing a module. 'directory' is the * directory where the module file is supposed to be, or NULL or empty * in which case it should either be in the current directory or, on * some operating systems, in some standard place, for instance on the * PATH. Hence, to be absolutely sure to get the correct module, * always pass in a directory. The file name consists of the directory, * if supplied, and 'module_name' suitably decorated according to * the operating system's conventions (for instance lib*.so or *.dll). * * No checks are made that the file exists, or is of correct type. */ GLIB_AVAILABLE_IN_ALL gchar* g_module_build_path (const gchar *directory, const gchar *module_name); G_END_DECLS #endif /* __GMODULE_H__ */
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