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Tim Janik <timj@gtk.org>

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gmodule/COPYING Normal file
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GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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That's all there is to it!

182
gmodule/gmodule-ar.c Normal file
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/* GMODULE - GLIB wrapper code for dynamic module loading
* Copyright (C) 1998, 2000 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/>.
*/
/*
* MT safe
*/
/* because we are compatible with archive format only since AIX 4.3 */
#define __AR_BIG__
#include "config.h"
#include <ar.h>
#include <stdlib.h>
#include <dlfcn.h>
/* --- functions --- */
static gchar*
fetch_dlerror (gboolean replace_null)
{
gchar *msg = dlerror ();
/* make sure we always return an error message != NULL, if
* expected to do so. */
if (!msg && replace_null)
return "unknown dl-error";
return msg;
}
static gchar* _g_module_get_member(const gchar* file_name)
{
gchar* member = NULL;
struct fl_hdr file_header;
struct ar_hdr ar_header;
long first_member;
long name_len;
int fd;
fd = open(file_name, O_RDONLY);
if (fd == -1)
return NULL;
if (read(fd, (void*)&file_header, FL_HSZ) != FL_HSZ)
goto exit;
if (strncmp(file_header.fl_magic, AIAMAGBIG, SAIAMAG) != 0)
goto exit;
/* read first archive file member header */
first_member = atol(file_header.fl_fstmoff);
if (lseek(fd, first_member, SEEK_SET) != first_member)
goto exit;
if (read(fd, (void*)&ar_header, AR_HSZ - 2) != AR_HSZ - 2)
goto exit;
/* read member name */
name_len = atol(ar_header.ar_namlen);
member = g_malloc(name_len+1);
if (!member)
goto exit;
if (read(fd, (void*)member, name_len) != name_len)
{
g_free(member);
member = NULL;
goto exit;
}
member[name_len] = 0;
exit:
close(fd);
return member;
}
static gpointer
_g_module_open (const gchar *file_name,
gboolean bind_lazy,
gboolean bind_local,
GError **error)
{
gpointer handle;
gchar* member;
gchar* full_name;
/* extract name of first member of archive */
member = _g_module_get_member (file_name);
if (member != NULL)
{
full_name = g_strconcat (file_name, "(", member, ")", NULL);
g_free (member);
}
else
full_name = g_strdup (file_name);
handle = dlopen (full_name,
(bind_local ? RTLD_LOCAL : RTLD_GLOBAL) | RTLD_MEMBER | (bind_lazy ? RTLD_LAZY : RTLD_NOW));
g_free (full_name);
if (!handle)
{
const gchar *message = fetch_dlerror (TRUE);
g_module_set_error (message);
g_set_error_literal (error, G_MODULE_ERROR, G_MODULE_ERROR_FAILED, message);
}
return handle;
}
static gpointer
_g_module_self (void)
{
gpointer handle;
handle = dlopen (NULL, RTLD_GLOBAL | RTLD_LAZY);
if (!handle)
g_module_set_error (fetch_dlerror (TRUE));
return handle;
}
static void
_g_module_close (gpointer handle)
{
if (dlclose (handle) != 0)
g_module_set_error (fetch_dlerror (TRUE));
}
static gpointer
_g_module_symbol (gpointer handle,
const gchar *symbol_name)
{
gpointer p;
p = dlsym (handle, symbol_name);
if (!p)
g_module_set_error (fetch_dlerror (FALSE));
return p;
}
static gchar*
_g_module_build_path (const gchar *directory,
const gchar *module_name)
{
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, "." G_MODULE_SUFFIX, NULL);
} else if (strncmp (module_name, "lib", 3) == 0)
return g_strdup (module_name);
else
return g_strconcat ("lib", module_name, "." G_MODULE_SUFFIX, NULL);
}

225
gmodule/gmodule-dl.c Normal file
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/* GMODULE - GLIB wrapper code for dynamic module loading
* Copyright (C) 1998, 2000 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/.
*/
/*
* MT safe
*/
#include "config.h"
#include <dlfcn.h>
#include <glib.h>
/* Perl includes <nlist.h> and <link.h> instead of <dlfcn.h> on some systems? */
/* dlerror() is not implemented on all systems
*/
#ifndef G_MODULE_HAVE_DLERROR
# ifdef __NetBSD__
# define dlerror() g_strerror (errno)
# else /* !__NetBSD__ */
/* could we rely on errno's state here? */
# define dlerror() "unknown dl-error"
# endif /* !__NetBSD__ */
#endif /* G_MODULE_HAVE_DLERROR */
/* some flags are missing on some systems, so we provide
* harmless defaults.
* The Perl sources say, RTLD_LAZY needs to be defined as (1),
* at least for Solaris 1.
*
* Mandatory:
* RTLD_LAZY - resolve undefined symbols as code from the dynamic library
* is executed.
* RTLD_NOW - resolve all undefined symbols before dlopen returns, and fail
* if this cannot be done.
* Optionally:
* RTLD_GLOBAL - the external symbols defined in the library will be made
* available to subsequently loaded libraries.
*/
#ifndef HAVE_RTLD_LAZY
#define RTLD_LAZY 1
#endif /* RTLD_LAZY */
#ifndef HAVE_RTLD_NOW
#define RTLD_NOW 0
#endif /* RTLD_NOW */
/* some systems (OSF1 V5.0) have broken RTLD_GLOBAL linkage */
#ifdef G_MODULE_BROKEN_RTLD_GLOBAL
#undef RTLD_GLOBAL
#undef HAVE_RTLD_GLOBAL
#endif /* G_MODULE_BROKEN_RTLD_GLOBAL */
#ifndef HAVE_RTLD_GLOBAL
#define RTLD_GLOBAL 0
#endif /* RTLD_GLOBAL */
/* According to POSIX.1-2001, dlerror() is not necessarily thread-safe
* (see https://pubs.opengroup.org/onlinepubs/009695399/), and so must be
* called within the same locked section as the dlopen()/dlsym() call which
* may have caused an error.
*
* However, some libc implementations, such as glibc, implement dlerror() using
* thread-local storage, so are thread-safe. As of early 2021:
* - glibc is thread-safe: https://github.com/bminor/glibc/blob/HEAD/dlfcn/libc_dlerror_result.c
* - uclibc-ng is not thread-safe: https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/tree/ldso/libdl/libdl.c?id=132decd2a043d0ccf799f42bf89f3ae0c11e95d5#n1075
* - Other libc implementations have not been checked, and no problems have
* been reported with them in 10 years, so default to assuming that they
* don’t need additional thread-safety from GLib
*/
#if defined(__UCLIBC__)
G_LOCK_DEFINE_STATIC (errors);
#else
#define DLERROR_IS_THREADSAFE 1
#endif
static void
lock_dlerror (void)
{
#ifndef DLERROR_IS_THREADSAFE
G_LOCK (errors);
#endif
}
static void
unlock_dlerror (void)
{
#ifndef DLERROR_IS_THREADSAFE
G_UNLOCK (errors);
#endif
}
/* This should be called with lock_dlerror() held */
static const gchar *
fetch_dlerror (gboolean replace_null)
{
const gchar *msg = dlerror ();
/* make sure we always return an error message != NULL, if
* expected to do so. */
if (!msg && replace_null)
return "unknown dl-error";
return msg;
}
static gpointer
_g_module_open (const gchar *file_name,
gboolean bind_lazy,
gboolean bind_local,
GError **error)
{
gpointer handle;
lock_dlerror ();
handle = dlopen (file_name,
(bind_local ? 0 : RTLD_GLOBAL) | (bind_lazy ? RTLD_LAZY : RTLD_NOW));
if (!handle)
{
const gchar *message = fetch_dlerror (TRUE);
g_module_set_error (message);
g_set_error_literal (error, G_MODULE_ERROR, G_MODULE_ERROR_FAILED, message);
}
unlock_dlerror ();
return handle;
}
static gpointer
_g_module_self (void)
{
gpointer handle;
/* to query symbols from the program itself, special link options
* are required on some systems.
*/
/* On Android 32 bit (i.e. not __LP64__), dlopen(NULL)
* does not work reliable and generally no symbols are found
* at all. RTLD_DEFAULT works though.
* On Android 64 bit, dlopen(NULL) seems to work but dlsym(handle)
* always returns 'undefined symbol'. Only if RTLD_DEFAULT or
* NULL is given, dlsym returns an appropriate pointer.
*/
lock_dlerror ();
#if defined(__BIONIC__)
handle = RTLD_DEFAULT;
#else
handle = dlopen (NULL, RTLD_GLOBAL | RTLD_LAZY);
#endif
if (!handle)
g_module_set_error (fetch_dlerror (TRUE));
unlock_dlerror ();
return handle;
}
static void
_g_module_close (gpointer handle)
{
#if defined(__BIONIC__)
if (handle != RTLD_DEFAULT)
#endif
{
lock_dlerror ();
if (dlclose (handle) != 0)
g_module_set_error (fetch_dlerror (TRUE));
unlock_dlerror ();
}
}
static gpointer
_g_module_symbol (gpointer handle,
const gchar *symbol_name)
{
gpointer p;
const gchar *msg;
lock_dlerror ();
fetch_dlerror (FALSE);
p = dlsym (handle, symbol_name);
msg = fetch_dlerror (FALSE);
if (msg)
g_module_set_error (msg);
unlock_dlerror ();
return p;
}
static gchar*
_g_module_build_path (const gchar *directory,
const gchar *module_name)
{
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, "." G_MODULE_SUFFIX, NULL);
} else if (strncmp (module_name, "lib", 3) == 0)
return g_strdup (module_name);
else
return g_strconcat ("lib", module_name, "." G_MODULE_SUFFIX, NULL);
}

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/* GMODULE - GLIB wrapper code for dynamic module loading
* Copyright (C) 1998, 2000 Tim Janik
*
* Win32 GMODULE implementation
* Copyright (C) 1998 Tor Lillqvist
*
* 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/.
*/
/*
* MT safe
*/
#include "config.h"
#include <glib.h>
#include <stdio.h>
#include <windows.h>
#include <tlhelp32.h>
#ifdef G_WITH_CYGWIN
#include <sys/cygwin.h>
#endif
static void G_GNUC_PRINTF (2, 3)
set_error (GError **error,
const gchar *format,
...)
{
gchar *win32_error;
gchar *detail;
gchar *message;
va_list args;
win32_error = g_win32_error_message (GetLastError ());
va_start (args, format);
detail = g_strdup_vprintf (format, args);
va_end (args);
message = g_strconcat (detail, win32_error, NULL);
g_module_set_error (message);
g_set_error_literal (error, G_MODULE_ERROR, G_MODULE_ERROR_FAILED, message);
g_free (message);
g_free (detail);
g_free (win32_error);
}
/* --- functions --- */
static gpointer
_g_module_open (const gchar *file_name,
gboolean bind_lazy,
gboolean bind_local,
GError **error)
{
HINSTANCE handle;
wchar_t *wfilename;
DWORD old_mode;
BOOL success;
#ifdef G_WITH_CYGWIN
gchar tmp[MAX_PATH];
cygwin_conv_to_win32_path(file_name, tmp);
file_name = tmp;
#endif
wfilename = g_utf8_to_utf16 (file_name, -1, NULL, NULL, NULL);
/* suppress error dialog */
success = SetThreadErrorMode (SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS, &old_mode);
if (!success)
set_error (error, "");
/* When building for UWP, load app asset DLLs instead of filesystem DLLs.
* Needs MSVC, Windows 8 and newer, and is only usable from apps. */
#if _WIN32_WINNT >= 0x0602 && defined(G_WINAPI_ONLY_APP)
handle = LoadPackagedLibrary (wfilename, 0);
#else
handle = LoadLibraryW (wfilename);
#endif
if (success)
SetThreadErrorMode (old_mode, NULL);
g_free (wfilename);
if (!handle)
set_error (error, "'%s': ", file_name);
return handle;
}
static gint dummy;
static gpointer null_module_handle = &dummy;
static gpointer
_g_module_self (void)
{
return null_module_handle;
}
static void
_g_module_close (gpointer handle)
{
if (handle != null_module_handle)
if (!FreeLibrary (handle))
set_error (NULL, "");
}
static gpointer
find_in_any_module_using_toolhelp (const gchar *symbol_name)
{
HANDLE snapshot;
MODULEENTRY32 me32;
gpointer p = NULL;
/* Under UWP, Module32Next and Module32First are not available since we're
* not allowed to search in the address space of arbitrary loaded DLLs */
#if !defined(G_WINAPI_ONLY_APP)
/* https://docs.microsoft.com/en-us/windows/win32/api/tlhelp32/nf-tlhelp32-createtoolhelp32snapshot#remarks
* If the function fails with ERROR_BAD_LENGTH, retry the function until it succeeds. */
while (TRUE)
{
snapshot = CreateToolhelp32Snapshot (TH32CS_SNAPMODULE, 0);
if (snapshot == INVALID_HANDLE_VALUE && GetLastError () == ERROR_BAD_LENGTH)
{
g_thread_yield ();
continue;
}
break;
}
if (snapshot == INVALID_HANDLE_VALUE)
return NULL;
me32.dwSize = sizeof (me32);
p = NULL;
if (Module32First (snapshot, &me32))
{
do {
if ((p = GetProcAddress (me32.hModule, symbol_name)) != NULL)
break;
} while (Module32Next (snapshot, &me32));
}
CloseHandle (snapshot);
#endif
return p;
}
static gpointer
find_in_any_module (const gchar *symbol_name)
{
gpointer result;
if ((result = find_in_any_module_using_toolhelp (symbol_name)) == NULL)
return NULL;
else
return result;
}
static gpointer
_g_module_symbol (gpointer handle,
const gchar *symbol_name)
{
gpointer p;
if (handle == null_module_handle)
{
if ((p = GetProcAddress (GetModuleHandle (NULL), symbol_name)) == NULL)
p = find_in_any_module (symbol_name);
}
else
p = GetProcAddress (handle, symbol_name);
if (!p)
set_error (NULL, "");
return p;
}
static gchar*
_g_module_build_path (const gchar *directory,
const gchar *module_name)
{
gint k;
k = strlen (module_name);
if (directory && *directory)
if (k > 4 && g_ascii_strcasecmp (module_name + k - 4, ".dll") == 0)
return g_strconcat (directory, G_DIR_SEPARATOR_S, module_name, NULL);
#ifdef G_WITH_CYGWIN
else if (strncmp (module_name, "lib", 3) == 0 || strncmp (module_name, "cyg", 3) == 0)
return g_strconcat (directory, G_DIR_SEPARATOR_S, module_name, ".dll", NULL);
else
return g_strconcat (directory, G_DIR_SEPARATOR_S, "cyg", module_name, ".dll", NULL);
#else
else if (strncmp (module_name, "lib", 3) == 0)
return g_strconcat (directory, G_DIR_SEPARATOR_S, module_name, ".dll", NULL);
else
return g_strconcat (directory, G_DIR_SEPARATOR_S, "lib", module_name, ".dll", NULL);
#endif
else if (k > 4 && g_ascii_strcasecmp (module_name + k - 4, ".dll") == 0)
return g_strdup (module_name);
#ifdef G_WITH_CYGWIN
else if (strncmp (module_name, "lib", 3) == 0 || strncmp (module_name, "cyg", 3) == 0)
return g_strconcat (module_name, ".dll", NULL);
else
return g_strconcat ("cyg", module_name, ".dll", NULL);
#else
else if (strncmp (module_name, "lib", 3) == 0)
return g_strconcat (module_name, ".dll", NULL);
else
return g_strconcat ("lib", module_name, ".dll", NULL);
#endif
}

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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/.
*/
/*
* MT safe
*/
#include "config.h"
#include "glib.h"
#include "gmodule.h"
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef G_OS_UNIX
#include <unistd.h>
#endif
#ifdef G_OS_WIN32
#include <io.h> /* For open() and close() prototypes. */
#endif
#include "gmoduleconf.h"
#include "gstdio.h"
/**
* SECTION:modules
* @title: Dynamic Loading of Modules
* @short_description: portable method for dynamically loading 'plug-ins'
*
* These functions provide a portable way to dynamically load object files
* (commonly known as 'plug-ins'). The current implementation supports all
* systems that provide an implementation of dlopen() (e.g. Linux/Sun), as
* well as Windows platforms via DLLs.
*
* A program which wants to use these functions must be linked to the
* libraries output by the command `pkg-config --libs gmodule-2.0`.
*
* To use them you must first determine whether dynamic loading
* is supported on the platform by calling g_module_supported().
* If it is, you can open a module with g_module_open(),
* find the module's symbols (e.g. function names) with g_module_symbol(),
* and later close the module with g_module_close().
* g_module_name() will return the file name of a currently opened module.
*
* If any of the above functions fail, the error status can be found with
* g_module_error().
*
* The #GModule implementation features reference counting for opened modules,
* and supports hook functions within a module which are called when the
* module is loaded and unloaded (see #GModuleCheckInit and #GModuleUnload).
*
* If your module introduces static data to common subsystems in the running
* program, e.g. through calling
* `g_quark_from_static_string ("my-module-stuff")`,
* it must ensure that it is never unloaded, by calling g_module_make_resident().
*
* Example: Calling a function defined in a GModule
* |[<!-- language="C" -->
* // the function signature for 'say_hello'
* typedef void (* SayHelloFunc) (const char *message);
*
* gboolean
* just_say_hello (const char *filename, GError **error)
* {
* SayHelloFunc say_hello;
* GModule *module;
*
* module = g_module_open (filename, G_MODULE_BIND_LAZY);
* if (!module)
* {
* g_set_error (error, FOO_ERROR, FOO_ERROR_BLAH,
* "%s", g_module_error ());
* return FALSE;
* }
*
* if (!g_module_symbol (module, "say_hello", (gpointer *)&say_hello))
* {
* g_set_error (error, SAY_ERROR, SAY_ERROR_OPEN,
* "%s: %s", filename, g_module_error ());
* if (!g_module_close (module))
* g_warning ("%s: %s", filename, g_module_error ());
* return FALSE;
* }
*
* if (say_hello == NULL)
* {
* g_set_error (error, SAY_ERROR, SAY_ERROR_OPEN,
* "symbol say_hello is NULL");
* if (!g_module_close (module))
* g_warning ("%s: %s", filename, g_module_error ());
* return FALSE;
* }
*
* // call our function in the module
* say_hello ("Hello world!");
*
* if (!g_module_close (module))
* g_warning ("%s: %s", filename, g_module_error ());
* return TRUE;
* }
* ]|
*/
/**
* GModule:
*
* The #GModule struct is an opaque data structure to represent a
* [dynamically-loaded module][glib-Dynamic-Loading-of-Modules].
* It should only be accessed via the following functions.
*/
/**
* GModuleCheckInit:
* @module: the #GModule corresponding to the module which has just been loaded
*
* Specifies the type of the module initialization function.
* If a module contains a function named g_module_check_init() it is called
* automatically when the module is loaded. It is passed the #GModule structure
* and should return %NULL on success or a string describing the initialization
* error.
*
* Returns: %NULL on success, or a string describing the initialization error
*/
/**
* GModuleUnload:
* @module: the #GModule about to be unloaded
*
* Specifies the type of the module function called when it is unloaded.
* If a module contains a function named g_module_unload() it is called
* automatically when the module is unloaded.
* It is passed the #GModule structure.
*/
/**
* G_MODULE_SUFFIX:
*
* Expands to the proper shared library suffix for the current platform
* without the leading dot. For most Unices and Linux this is "so", and
* for Windows this is "dll".
*/
/**
* G_MODULE_EXPORT:
*
* Used to declare functions exported by libraries or modules.
*
* When compiling for Windows, it marks the symbol as `dllexport`.
*
* When compiling for Linux and Unices, it marks the symbol as having `default`
* visibility. This is no-op unless the code is being compiled with a
* non-default
* [visibility flag](https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#index-fvisibility-1260)
* such as `hidden`.
*/
/**
* G_MODULE_IMPORT:
*
* Used to declare functions imported from modules.
*/
/* We maintain a list of modules, so we can reference count them.
* That's needed because some platforms don't support references counts on
* modules. Also, the module for the program itself is kept separately for
* faster access and because it has special semantics.
*/
/* --- structures --- */
struct _GModule
{
gchar *file_name;
gpointer handle;
guint ref_count : 31;
guint is_resident : 1;
GModuleUnload unload;
GModule *next;
};
/* --- prototypes --- */
static gpointer _g_module_open (const gchar *file_name,
gboolean bind_lazy,
gboolean bind_local,
GError **error);
static void _g_module_close (gpointer handle);
static gpointer _g_module_self (void);
static gpointer _g_module_symbol (gpointer handle,
const gchar *symbol_name);
static gchar* _g_module_build_path (const gchar *directory,
const gchar *module_name);
static inline void g_module_set_error (const gchar *error);
static inline GModule* g_module_find_by_handle (gpointer handle);
static inline GModule* g_module_find_by_name (const gchar *name);
/* --- variables --- */
static GModule *modules = NULL;
static GModule *main_module = NULL;
static GPrivate module_error_private = G_PRIVATE_INIT (g_free);
static gboolean module_debug_initialized = FALSE;
static guint module_debug_flags = 0;
/* --- inline functions --- */
static inline GModule*
g_module_find_by_handle (gpointer handle)
{
GModule *module;
GModule *retval = NULL;
if (main_module && main_module->handle == handle)
retval = main_module;
else
for (module = modules; module; module = module->next)
if (handle == module->handle)
{
retval = module;
break;
}
return retval;
}
static inline GModule*
g_module_find_by_name (const gchar *name)
{
GModule *module;
GModule *retval = NULL;
for (module = modules; module; module = module->next)
if (strcmp (name, module->file_name) == 0)
{
retval = module;
break;
}
return retval;
}
static inline void
g_module_set_error_unduped (gchar *error)
{
g_private_replace (&module_error_private, error);
errno = 0;
}
static inline void
g_module_set_error (const gchar *error)
{
g_module_set_error_unduped (g_strdup (error));
}
/* --- include platform specific code --- */
#define SUPPORT_OR_RETURN(rv) { g_module_set_error (NULL); }
#if (G_MODULE_IMPL == G_MODULE_IMPL_DL)
#include "gmodule-dl.c"
#elif (G_MODULE_IMPL == G_MODULE_IMPL_WIN32)
#include "gmodule-win32.c"
#elif (G_MODULE_IMPL == G_MODULE_IMPL_AR)
#include "gmodule-ar.c"
#else
#undef SUPPORT_OR_RETURN
#define SUPPORT_OR_RETURN(rv) { g_module_set_error ("dynamic modules are " \
"not supported by this system"); return rv; }
static gpointer
_g_module_open (const gchar *file_name,
gboolean bind_lazy,
gboolean bind_local,
GError **error)
{
g_module_set_error (NULL);
return NULL;
}
static void
_g_module_close (gpointer handle)
{
}
static gpointer
_g_module_self (void)
{
return NULL;
}
static gpointer
_g_module_symbol (gpointer handle,
const gchar *symbol_name)
{
return NULL;
}
static gchar*
_g_module_build_path (const gchar *directory,
const gchar *module_name)
{
return NULL;
}
#endif /* no implementation */
/**
* G_MODULE_ERROR:
*
* The error domain of the #GModule API.
*
* Since: 2.70
*/
G_DEFINE_QUARK (g-module-error-quark, g_module_error)
/* --- functions --- */
/**
* g_module_supported:
*
* Checks if modules are supported on the current platform.
*
* Returns: %TRUE if modules are supported
*/
gboolean
g_module_supported (void)
{
SUPPORT_OR_RETURN (FALSE);
return TRUE;
}
static gchar*
parse_libtool_archive (const gchar* libtool_name)
{
const guint TOKEN_DLNAME = G_TOKEN_LAST + 1;
const guint TOKEN_INSTALLED = G_TOKEN_LAST + 2;
const guint TOKEN_LIBDIR = G_TOKEN_LAST + 3;
gchar *lt_dlname = NULL;
gboolean lt_installed = TRUE;
gchar *lt_libdir = NULL;
gchar *name;
GTokenType token;
GScanner *scanner;
int fd = g_open (libtool_name, O_RDONLY, 0);
if (fd < 0)
{
gchar *display_libtool_name = g_filename_display_name (libtool_name);
g_module_set_error_unduped (g_strdup_printf ("failed to open libtool archive \"%s\"", display_libtool_name));
g_free (display_libtool_name);
return NULL;
}
/* search libtool's dlname specification */
scanner = g_scanner_new (NULL);
g_scanner_input_file (scanner, fd);
scanner->config->symbol_2_token = TRUE;
g_scanner_scope_add_symbol (scanner, 0, "dlname",
GUINT_TO_POINTER (TOKEN_DLNAME));
g_scanner_scope_add_symbol (scanner, 0, "installed",
GUINT_TO_POINTER (TOKEN_INSTALLED));
g_scanner_scope_add_symbol (scanner, 0, "libdir",
GUINT_TO_POINTER (TOKEN_LIBDIR));
while (!g_scanner_eof (scanner))
{
token = g_scanner_get_next_token (scanner);
if (token == TOKEN_DLNAME || token == TOKEN_INSTALLED ||
token == TOKEN_LIBDIR)
{
if (g_scanner_get_next_token (scanner) != '=' ||
g_scanner_get_next_token (scanner) !=
(token == TOKEN_INSTALLED ?
G_TOKEN_IDENTIFIER : G_TOKEN_STRING))
{
gchar *display_libtool_name = g_filename_display_name (libtool_name);
g_module_set_error_unduped (g_strdup_printf ("unable to parse libtool archive \"%s\"", display_libtool_name));
g_free (display_libtool_name);
g_free (lt_dlname);
g_free (lt_libdir);
g_scanner_destroy (scanner);
close (fd);
return NULL;
}
else
{
if (token == TOKEN_DLNAME)
{
g_free (lt_dlname);
lt_dlname = g_strdup (scanner->value.v_string);
}
else if (token == TOKEN_INSTALLED)
lt_installed =
strcmp (scanner->value.v_identifier, "yes") == 0;
else /* token == TOKEN_LIBDIR */
{
g_free (lt_libdir);
lt_libdir = g_strdup (scanner->value.v_string);
}
}
}
}
if (!lt_installed)
{
gchar *dir = g_path_get_dirname (libtool_name);
g_free (lt_libdir);
lt_libdir = g_strconcat (dir, G_DIR_SEPARATOR_S ".libs", NULL);
g_free (dir);
}
name = g_strconcat (lt_libdir, G_DIR_SEPARATOR_S, lt_dlname, NULL);
g_free (lt_dlname);
g_free (lt_libdir);
g_scanner_destroy (scanner);
close (fd);
return name;
}
enum
{
G_MODULE_DEBUG_RESIDENT_MODULES = 1 << 0,
G_MODULE_DEBUG_BIND_NOW_MODULES = 1 << 1
};
static void
_g_module_debug_init (void)
{
const GDebugKey keys[] = {
{ "resident-modules", G_MODULE_DEBUG_RESIDENT_MODULES },
{ "bind-now-modules", G_MODULE_DEBUG_BIND_NOW_MODULES }
};
const gchar *env;
env = g_getenv ("G_DEBUG");
module_debug_flags =
!env ? 0 : g_parse_debug_string (env, keys, G_N_ELEMENTS (keys));
module_debug_initialized = TRUE;
}
static GRecMutex g_module_global_lock;
/**
* g_module_open_full:
* @file_name: (nullable): the name of the file containing the module, or %NULL
* to obtain a #GModule representing the main program itself
* @flags: the flags used for opening the module. This can be the
* logical OR of any of the #GModuleFlags
* @error: #GError.
*
* Opens a module. If the module has already been opened,
* its reference count is incremented.
*
* First of all g_module_open_full() tries to open @file_name as a module.
* If that fails and @file_name has the ".la"-suffix (and is a libtool
* archive) it tries to open the corresponding module. If that fails
* and it doesn't have the proper module suffix for the platform
* (%G_MODULE_SUFFIX), this suffix will be appended and the corresponding
* module will be opened. If that fails and @file_name doesn't have the
* ".la"-suffix, this suffix is appended and g_module_open_full() tries to open
* the corresponding module. If eventually that fails as well, %NULL is
* returned.
*
* Returns: a #GModule on success, or %NULL on failure
*
* Since: 2.70
*/
GModule*
g_module_open_full (const gchar *file_name,
GModuleFlags flags,
GError **error)
{
GModule *module;
gpointer handle = NULL;
gchar *name = NULL;
SUPPORT_OR_RETURN (NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
g_rec_mutex_lock (&g_module_global_lock);
if (G_UNLIKELY (!module_debug_initialized))
_g_module_debug_init ();
if (module_debug_flags & G_MODULE_DEBUG_BIND_NOW_MODULES)
flags &= ~G_MODULE_BIND_LAZY;
if (!file_name)
{
if (!main_module)
{
handle = _g_module_self ();
/* On Android 64 bit, RTLD_DEFAULT is (void *)0x0
* so it always fails to create main_module if file_name is NULL */
#if !defined(__BIONIC__) || !defined(__LP64__)
if (handle)
#endif
{
main_module = g_new (GModule, 1);
main_module->file_name = NULL;
main_module->handle = handle;
main_module->ref_count = 1;
main_module->is_resident = TRUE;
main_module->unload = NULL;
main_module->next = NULL;
}
}
else
main_module->ref_count++;
g_rec_mutex_unlock (&g_module_global_lock);
return main_module;
}
/* we first search the module list by name */
module = g_module_find_by_name (file_name);
if (module)
{
module->ref_count++;
g_rec_mutex_unlock (&g_module_global_lock);
return module;
}
/* check whether we have a readable file right away */
if (g_file_test (file_name, G_FILE_TEST_IS_REGULAR))
name = g_strdup (file_name);
/* try completing file name with standard library suffix */
if (!name)
{
name = g_strconcat (file_name, "." G_MODULE_SUFFIX, NULL);
if (!g_file_test (name, G_FILE_TEST_IS_REGULAR))
{
g_free (name);
name = NULL;
}
}
/* try completing by appending libtool suffix */
if (!name)
{
name = g_strconcat (file_name, ".la", NULL);
if (!g_file_test (name, G_FILE_TEST_IS_REGULAR))
{
g_free (name);
name = NULL;
}
}
/* we can't access() the file, lets hope the platform backends finds
* it via library paths
*/
if (!name)
{
gchar *dot = strrchr (file_name, '.');
gchar *slash = strrchr (file_name, G_DIR_SEPARATOR);
/* make sure the name has a suffix */
if (!dot || dot < slash)
name = g_strconcat (file_name, "." G_MODULE_SUFFIX, NULL);
else
name = g_strdup (file_name);
}
/* ok, try loading the module */
g_assert (name != NULL);
/* if it's a libtool archive, figure library file to load */
if (g_str_has_suffix (name, ".la")) /* libtool archive? */
{
gchar *real_name = parse_libtool_archive (name);
/* real_name might be NULL, but then module error is already set */
if (real_name)
{
g_free (name);
name = real_name;
}
}
handle = _g_module_open (name, (flags & G_MODULE_BIND_LAZY) != 0,
(flags & G_MODULE_BIND_LOCAL) != 0, error);
g_free (name);
if (handle)
{
gchar *saved_error;
GModuleCheckInit check_init;
const gchar *check_failed = NULL;
/* search the module list by handle, since file names are not unique */
module = g_module_find_by_handle (handle);
if (module)
{
_g_module_close (module->handle);
module->ref_count++;
g_module_set_error (NULL);
g_rec_mutex_unlock (&g_module_global_lock);
return module;
}
saved_error = g_strdup (g_module_error ());
g_module_set_error (NULL);
module = g_new (GModule, 1);
module->file_name = g_strdup (file_name);
module->handle = handle;
module->ref_count = 1;
module->is_resident = FALSE;
module->unload = NULL;
module->next = modules;
modules = module;
/* check initialization */
if (g_module_symbol (module, "g_module_check_init", (gpointer) &check_init) && check_init != NULL)
check_failed = check_init (module);
/* we don't call unload() if the initialization check failed. */
if (!check_failed)
g_module_symbol (module, "g_module_unload", (gpointer) &module->unload);
if (check_failed)
{
gchar *temp_error;
temp_error = g_strconcat ("GModule (", file_name, ") ",
"initialization check failed: ",
check_failed, NULL);
g_module_close (module);
module = NULL;
g_module_set_error (temp_error);
g_set_error_literal (error, G_MODULE_ERROR, G_MODULE_ERROR_CHECK_FAILED, temp_error);
g_free (temp_error);
}
else
g_module_set_error (saved_error);
g_free (saved_error);
}
if (module != NULL &&
(module_debug_flags & G_MODULE_DEBUG_RESIDENT_MODULES))
g_module_make_resident (module);
g_rec_mutex_unlock (&g_module_global_lock);
return module;
}
/**
* g_module_open:
* @file_name: (nullable): the name of the file containing the module, or %NULL
* to obtain a #GModule representing the main program itself
* @flags: the flags used for opening the module. This can be the
* logical OR of any of the #GModuleFlags.
*
* A thin wrapper function around g_module_open_full()
*
* Returns: a #GModule on success, or %NULL on failure
*/
GModule *
g_module_open (const gchar *file_name,
GModuleFlags flags)
{
return g_module_open_full (file_name, flags, NULL);
}
/**
* g_module_close:
* @module: a #GModule to close
*
* Closes a module.
*
* Returns: %TRUE on success
*/
gboolean
g_module_close (GModule *module)
{
SUPPORT_OR_RETURN (FALSE);
g_return_val_if_fail (module != NULL, FALSE);
g_return_val_if_fail (module->ref_count > 0, FALSE);
g_rec_mutex_lock (&g_module_global_lock);
module->ref_count--;
if (!module->ref_count && !module->is_resident && module->unload)
{
GModuleUnload unload;
unload = module->unload;
module->unload = NULL;
unload (module);
}
if (!module->ref_count && !module->is_resident)
{
GModule *last;
GModule *node;
last = NULL;
node = modules;
while (node)
{
if (node == module)
{
if (last)
last->next = node->next;
else
modules = node->next;
break;
}
last = node;
node = last->next;
}
module->next = NULL;
_g_module_close (module->handle);
g_free (module->file_name);
g_free (module);
}
g_rec_mutex_unlock (&g_module_global_lock);
return g_module_error() == NULL;
}
/**
* g_module_make_resident:
* @module: a #GModule to make permanently resident
*
* Ensures that a module will never be unloaded.
* Any future g_module_close() calls on the module will be ignored.
*/
void
g_module_make_resident (GModule *module)
{
g_return_if_fail (module != NULL);
module->is_resident = TRUE;
}
/**
* g_module_error:
*
* Gets a string describing the last module error.
*
* Returns: a string describing the last module error
*/
const gchar *
g_module_error (void)
{
return g_private_get (&module_error_private);
}
/**
* g_module_symbol:
* @module: a #GModule
* @symbol_name: the name of the symbol to find
* @symbol: (out): returns the pointer to the symbol value
*
* Gets a symbol pointer from a module, such as one exported
* by %G_MODULE_EXPORT. Note that a valid symbol can be %NULL.
*
* Returns: %TRUE on success
*/
gboolean
g_module_symbol (GModule *module,
const gchar *symbol_name,
gpointer *symbol)
{
const gchar *module_error;
if (symbol)
*symbol = NULL;
SUPPORT_OR_RETURN (FALSE);
g_return_val_if_fail (module != NULL, FALSE);
g_return_val_if_fail (symbol_name != NULL, FALSE);
g_return_val_if_fail (symbol != NULL, FALSE);
g_rec_mutex_lock (&g_module_global_lock);
#ifdef G_MODULE_NEED_USCORE
{
gchar *name;
name = g_strconcat ("_", symbol_name, NULL);
*symbol = _g_module_symbol (module->handle, name);
g_free (name);
}
#else /* !G_MODULE_NEED_USCORE */
*symbol = _g_module_symbol (module->handle, symbol_name);
#endif /* !G_MODULE_NEED_USCORE */
module_error = g_module_error ();
if (module_error)
{
gchar *error;
error = g_strconcat ("'", symbol_name, "': ", module_error, NULL);
g_module_set_error (error);
g_free (error);
*symbol = NULL;
}
g_rec_mutex_unlock (&g_module_global_lock);
return !module_error;
}
/**
* g_module_name:
* @module: a #GModule
*
* Returns the filename that the module was opened with.
*
* If @module refers to the application itself, "main" is returned.
*
* Returns: (transfer none): the filename of the module
*/
const gchar *
g_module_name (GModule *module)
{
g_return_val_if_fail (module != NULL, NULL);
if (module == main_module)
return "main";
return module->file_name;
}
/**
* g_module_build_path:
* @directory: (nullable): the directory where the module is. This can be
* %NULL or the empty string to indicate that the standard platform-specific
* directories will be used, though that is not recommended
* @module_name: the name of the module
*
* A portable way to build the filename of a module. The platform-specific
* prefix and suffix are added to the filename, if needed, and the result
* is added to the directory, using the correct separator character.
*
* The directory should specify the directory where the module can be found.
* It can be %NULL or an empty string to indicate that the module is in a
* standard platform-specific directory, though this is not recommended
* since the wrong module may be found.
*
* For example, calling g_module_build_path() on a Linux system with a
* @directory of `/lib` and a @module_name of "mylibrary" will return
* `/lib/libmylibrary.so`. On a Windows system, using `\Windows` as the
* directory it will return `\Windows\mylibrary.dll`.
*
* Returns: the complete path of the module, including the standard library
* prefix and suffix. This should be freed when no longer needed
*/
gchar *
g_module_build_path (const gchar *directory,
const gchar *module_name)
{
g_return_val_if_fail (module_name != NULL, NULL);
return _g_module_build_path (directory, module_name);
}
#ifdef G_OS_WIN32
/* Binary compatibility versions. Not for newly compiled code. */
_GLIB_EXTERN GModule * g_module_open_utf8 (const gchar *file_name,
GModuleFlags flags);
_GLIB_EXTERN const gchar *g_module_name_utf8 (GModule *module);
GModule*
g_module_open_utf8 (const gchar *file_name,
GModuleFlags flags)
{
return g_module_open (file_name, flags);
}
const gchar *
g_module_name_utf8 (GModule *module)
{
return g_module_name (module);
}
#endif

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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);
#define G_MODULE_ERROR g_module_error_quark () GLIB_AVAILABLE_MACRO_IN_2_70
GLIB_AVAILABLE_IN_2_70
GQuark g_module_error_quark (void);
/**
* GModuleError:
* @G_MODULE_ERROR_FAILED: there was an error loading or opening a module file
* @G_MODULE_ERROR_CHECK_FAILED: a module returned an error from its `g_module_check_init()` function
*
* Errors returned by g_module_open_full().
*
* Since: 2.70
*/
typedef enum
{
G_MODULE_ERROR_FAILED,
G_MODULE_ERROR_CHECK_FAILED,
} GModuleError
GLIB_AVAILABLE_ENUMERATOR_IN_2_70;
/* 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);
GLIB_AVAILABLE_IN_2_70
GModule *g_module_open_full (const gchar *file_name,
GModuleFlags flags,
GError **error);
/* 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__ */

30
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#include <winver.h>
VS_VERSION_INFO VERSIONINFO
FILEVERSION @GLIB_MAJOR_VERSION@,@GLIB_MINOR_VERSION@,@GLIB_MICRO_VERSION@,0
PRODUCTVERSION @GLIB_MAJOR_VERSION@,@GLIB_MINOR_VERSION@,@GLIB_MICRO_VERSION@,0
FILEFLAGSMASK 0
FILEFLAGS 0
FILEOS VOS__WINDOWS32
FILETYPE VFT_DLL
FILESUBTYPE VFT2_UNKNOWN
BEGIN
BLOCK "StringFileInfo"
BEGIN
BLOCK "040904B0"
BEGIN
VALUE "CompanyName", "The GLib developer community"
VALUE "FileDescription", "GModule"
VALUE "FileVersion", "@GLIB_VERSION@.0"
VALUE "InternalName", "libgmodule-2.0-@LT_CURRENT_MINUS_AGE@"
VALUE "LegalCopyright", "Copyright 1998-2011 Tim Janik and others."
VALUE "OriginalFilename", "libgmodule-2.0-@LT_CURRENT_MINUS_AGE@.dll"
VALUE "ProductName", "GLib"
VALUE "ProductVersion", "@GLIB_VERSION@"
END
END
BLOCK "VarFileInfo"
BEGIN
VALUE "Translation", 0x409, 1200
END
END

48
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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/>.
*/
#ifndef __G_MODULE_CONF_H__
#define __G_MODULE_CONF_H__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define G_MODULE_IMPL_NONE 0
#define G_MODULE_IMPL_DL 1
#define G_MODULE_IMPL_WIN32 3
#define G_MODULE_IMPL_AR 7
#define G_MODULE_IMPL @G_MODULE_IMPL@
#undef G_MODULE_HAVE_DLERROR
#if (@G_MODULE_HAVE_DLERROR@)
#define G_MODULE_HAVE_DLERROR
#endif
#if (@G_MODULE_NEED_USCORE@)
#define G_MODULE_NEED_USCORE
#endif
#if (@G_MODULE_BROKEN_RTLD_GLOBAL@)
#define G_MODULE_BROKEN_RTLD_GLOBAL
#endif
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __G_MODULE_CONF_H__ */

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gmoduleconf_conf = configuration_data()
g_module_need_uscore = 0
g_module_broken_rtld_global = 0
g_module_have_dlerror = 0
g_module_impl = ''
# On Windows force native WIN32 shared lib loader
if host_system == 'windows'
g_module_impl = 'G_MODULE_IMPL_WIN32'
# Force native AIX library loader
# dlopen() filepath must be of the form /path/libname.a(libname.so)
elif host_system == 'aix'
g_module_impl = 'G_MODULE_IMPL_AR'
elif have_dlopen_dlsym
g_module_impl = 'G_MODULE_IMPL_DL'
endif
# additional checks for G_MODULE_IMPL_DL
if g_module_impl == 'G_MODULE_IMPL_DL'
# FIXME: check for OSF1/5.0 RTLD_GLOBAL brokenness (is this still relevant?)
# Check whether we need preceding underscores
if cc.get_id() == 'msvc' or cc.get_id() == 'clang-cl'
message('Building for MSVC: assuming that symbols are prefixed with underscore')
g_module_need_uscore = 1
elif meson.has_exe_wrapper()
# FIXME: communicate result via stdout instead of return value, so non-0 return is not printed in bold red
rres = cc.run(dlopen_dlsym_test_code,
dependencies : libdl_dep,
name : 'dlsym() preceding underscores')
if host_system == 'windows' or (rres.compiled() and rres.returncode() == 0)
g_module_need_uscore = 1
endif
else
message('Cross-compiling: assuming that symbols aren\'t prefixed with underscore')
g_module_need_uscore = 0
endif
if cc.has_function('dlerror', dependencies : libdl_dep)
g_module_have_dlerror = 1
endif
endif
# Done, have we got an implementation?
if g_module_impl == ''
g_module_impl = '0'
message('WARNING: No suitable GModule implementation found!')
endif
gmoduleconf_conf.set('G_MODULE_IMPL', g_module_impl)
gmoduleconf_conf.set('G_MODULE_SUPPORTED', g_module_impl != '0')
gmoduleconf_conf.set('G_MODULE_HAVE_DLERROR', g_module_have_dlerror)
gmoduleconf_conf.set('G_MODULE_NEED_USCORE', g_module_need_uscore)
gmoduleconf_conf.set('G_MODULE_BROKEN_RTLD_GLOBAL', g_module_broken_rtld_global)
gmoduleconf_h = configure_file(input : 'gmoduleconf.h.in',
output : 'gmoduleconf.h',
configuration : gmoduleconf_conf)
# Expose as variable to be used by gobject-introspection
# when it includes GLib as a subproject
gmodule_h = files('gmodule.h')
gmodule_c = files('gmodule.c')
install_headers([gmodule_h], subdir : 'glib-2.0')
gmodule_sources = [gmodule_c]
if host_system == 'windows'
gmodule_win_rc = configure_file(
input: 'gmodule.rc.in',
output: 'gmodule.rc',
configuration: glibconfig_conf,
)
gmodule_win_res = windows.compile_resources(gmodule_win_rc)
gmodule_sources += [gmodule_win_res]
endif
libgmodule = library('gmodule-2.0',
sources : gmodule_sources,
version : library_version,
soversion : soversion,
darwin_versions : darwin_versions,
install : true,
include_directories : [configinc, gmoduleinc],
dependencies : [libdl_dep, libglib_dep],
c_args : ['-DG_LOG_DOMAIN="GModule"'] + glib_hidden_visibility_args,
link_args : [glib_link_flags],
)
supported_var = 'gmodule_supported=@0@'.format(g_module_impl != '0')
pkg.generate(libgmodule,
libraries : [thread_dep],
requires : ['glib-2.0'],
version : glib_version,
variables : [supported_var],
install_dir : glib_pkgconfigreldir,
filebase : 'gmodule-no-export-2.0',
name : 'GModule',
description : 'Dynamic module loader for GLib',
)
pkg.generate(libraries : [libgmodule, export_dynamic_ldflags],
requires : ['glib-2.0'],
version : glib_version,
variables : [supported_var],
install_dir : glib_pkgconfigreldir,
filebase : 'gmodule-export-2.0',
name : 'GModule',
description : 'Dynamic module loader for GLib',
)
pkg.generate(libraries : [libgmodule, export_dynamic_ldflags],
requires : ['glib-2.0'],
version : glib_version,
variables : [supported_var],
install_dir : glib_pkgconfigreldir,
filebase : 'gmodule-2.0',
name : 'GModule',
description : 'Dynamic module loader for GLib',
)
libgmodule_dep = declare_dependency(link_with : libgmodule,
include_directories : [gmoduleinc],
dependencies : [libglib_dep])
if meson.version().version_compare('>=0.54.0')
meson.override_dependency('gmodule-no-export-2.0', libgmodule_dep)
meson.override_dependency('gmodule-export-2.0', libgmodule_dep)
meson.override_dependency('gmodule-2.0', libgmodule_dep)
endif
if build_tests
subdir('tests')
endif

26
gmodule/tests/cxx.cpp Normal file
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/* Copyright (C) 2001 Sebastian Wilhelmi <wilhelmi@google.com>
*
* 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/>.
*/
/* A trivial C++ program to be compiled in C++ mode, which
* smoketests that the GModule headers are valid C++ headers. */
#include <gmodule.h>
int
main ()
{
return 0;
}

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if have_cxx
gmodule_tests = {
'cxx' : {
'source' : ['cxx.cpp'],
},
}
endif
test_env = environment()
test_env.set('G_TEST_SRCDIR', meson.current_source_dir())
test_env.set('G_TEST_BUILDDIR', meson.current_build_dir())
test_env.set('G_DEBUG', 'gc-friendly')
test_env.set('MALLOC_CHECK_', '2')
test_env.set('MALLOC_PERTURB_', '@0@'.format(random_number % 256))
test_deps = [libm, thread_dep, libglib_dep, libgmodule_dep]
test_cargs = ['-DG_LOG_DOMAIN="GModule"', '-UG_DISABLE_ASSERT']
foreach test_name, extra_args : gmodule_tests
source = extra_args.get('source', test_name + '.c')
install = installed_tests_enabled and extra_args.get('install', true)
if install
test_conf = configuration_data()
test_conf.set('installed_tests_dir', installed_tests_execdir)
test_conf.set('program', test_name)
test_conf.set('env', '')
configure_file(
input: installed_tests_template_tap,
output: test_name + '.test',
install_dir: installed_tests_metadir,
configuration: test_conf
)
endif
exe = executable(test_name, source,
c_args : test_cargs + extra_args.get('c_args', []),
link_args : extra_args.get('link_args', []),
dependencies : test_deps + extra_args.get('dependencies', []),
install_dir: installed_tests_execdir,
install: install,
)
suite = ['gmodule'] + extra_args.get('suite', [])
timeout = suite.contains('slow') ? test_timeout_slow : test_timeout
test(test_name, exe, env : test_env, timeout : timeout, suite : suite)
endforeach