Add test for module constructors, destructors and TLS callbacks

This commit is contained in:
Luca Bacci 2023-08-31 21:52:41 +02:00
parent af0a9489e7
commit 683991d836
2 changed files with 265 additions and 0 deletions

251
glib/tests/constructor.c Normal file
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@ -0,0 +1,251 @@
/* constructor.c - Test for constructors
*
* Copyright © 2023 Luca Bacci
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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/>.
*/
#include <glib.h>
#include "../gconstructorprivate.h"
#ifndef _WIN32
#include <dlfcn.h>
#else
#include <windows.h>
#endif
#define LIB_PREFIX "lib_"
#define APP_PREFIX "app_"
#ifdef BUILD_LIBRARY
#define PREFIX LIB_PREFIX
#else
#define PREFIX APP_PREFIX
#endif
#if G_HAS_CONSTRUCTORS
#ifdef G_DEFINE_CONSTRUCTOR_NEEDS_PRAGMA
#pragma G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS (ctor)
#endif
G_DEFINE_CONSTRUCTOR (ctor)
static void
ctor (void)
{
const char *string = PREFIX "ctor";
g_assert_null (g_getenv (string));
g_setenv (string, "1", FALSE);
}
#ifdef G_DEFINE_DESTRUCTOR_NEEDS_PRAGMA
#pragma G_DEFINE_DESTRUCTOR_PRAGMA_ARGS (dtor)
#endif
G_DEFINE_DESTRUCTOR (dtor)
static void
dtor (void)
{
const char *string = PREFIX "dtor";
g_assert_null (g_getenv (string));
g_setenv (string, "1", FALSE);
}
#endif /* G_HAS_CONSTRUCTORS */
#if defined (_WIN32) && defined (G_HAS_TLS_CALLBACKS)
extern IMAGE_DOS_HEADER __ImageBase;
static inline HMODULE
this_module (void)
{
return (HMODULE) &__ImageBase;
}
G_DEFINE_TLS_CALLBACK (tls_callback)
static void NTAPI
tls_callback (PVOID hInstance,
DWORD dwReason,
LPVOID lpvReserved)
{
/* The HINSTANCE we get must match the address of __ImageBase */
g_assert_true (hInstance == this_module ());
#ifndef BUILD_LIBRARY
/* Yes, we can call GetModuleHandle (NULL) with the loader lock */
g_assert_true (hInstance == GetModuleHandle (NULL));
#endif
switch (dwReason)
{
case DLL_PROCESS_ATTACH:
{
const char *string = PREFIX "tls_cb_process_attach";
#ifdef BUILD_LIBRARY
/* the library is explicitly loaded */
g_assert_null (lpvReserved);
#endif
g_assert_null (g_getenv (string));
g_setenv (string, "1", FALSE);
}
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
break;
case DLL_PROCESS_DETACH:
#ifdef BUILD_LIBRARY
{
const char *string = PREFIX "tls_cb_process_detach";
/* the library is explicitly unloaded */
g_assert_null (lpvReserved);
g_assert_null (g_getenv (string));
g_setenv (string, "1", FALSE);
}
#endif
break;
default:
g_assert_not_reached ();
break;
}
}
#endif /* _WIN32 && G_HAS_TLS_CALLBACKS */
#ifndef BUILD_LIBRARY
void *library;
static void
load_library (const char *library_path)
{
#ifndef _WIN32
library = dlopen (library_path, RTLD_LAZY);
if (!library)
g_error ("%s (%s) failed: %s", "dlopen", library_path, dlerror ());
#else
wchar_t *library_path_u16 = g_utf8_to_utf16 (library_path, -1, NULL, NULL, NULL);
g_assert_nonnull (library_path_u16);
library = LoadLibraryW (library_path_u16);
if (!library)
g_error ("%s (%s) failed with error code %u",
"FreeLibrary", library_path, (unsigned int) GetLastError ());
g_free (library_path_u16);
#endif
}
static void
unload_library (void)
{
#ifndef _WIN32
if (dlclose (library) != 0)
g_error ("%s failed: %s", "dlclose", dlerror ());
#else
if (!FreeLibrary (library))
g_error ("%s failed with error code %u",
"FreeLibrary", (unsigned int) GetLastError ());
#endif
}
static void
test_app (void)
{
#if G_HAS_CONSTRUCTORS
g_assert_cmpstr (g_getenv (APP_PREFIX "ctor"), ==, "1");
#endif
#if defined (_WIN32) && defined (G_HAS_TLS_CALLBACKS)
g_assert_cmpstr (g_getenv (APP_PREFIX "tls_cb_process_attach"), ==, "1");
#endif
}
static void
test_lib (gconstpointer data)
{
const char *library_path = (const char*) data;
/* Check that the environment is clean */
#if G_HAS_CONSTRUCTORS
g_assert_null (g_getenv (LIB_PREFIX "ctor"));
#endif
#if G_HAS_DESTRUCTORS
g_assert_null (g_getenv (LIB_PREFIX "dtor"));
#endif
#if defined (_WIN32) && defined (G_HAS_TLS_CALLBACKS)
g_assert_null (g_getenv (LIB_PREFIX "tls_cb_process_attach"));
g_assert_null (g_getenv (LIB_PREFIX "tls_cb_process_detach"));
#endif
/* Constructors */
load_library (library_path);
#if G_HAS_CONSTRUCTORS
g_assert_cmpstr (g_getenv (LIB_PREFIX "ctor"), ==, "1");
#endif
#if defined (_WIN32) && defined (G_HAS_TLS_CALLBACKS)
g_assert_cmpstr (g_getenv (LIB_PREFIX "tls_cb_process_attach"), ==, "1");
#endif
/* Destructors */
unload_library ();
#if G_HAS_DESTRUCTORS
g_assert_cmpstr (g_getenv (LIB_PREFIX "dtor"), ==, "1");
#endif
#if defined (_WIN32) && defined (G_HAS_TLS_CALLBACKS)
g_assert_cmpstr (g_getenv (LIB_PREFIX "tls_cb_process_detach"), ==, "1");
#endif
}
int
main (int argc, char *argv[])
{
const char *libname = G_STRINGIFY (LIB_NAME);
const char *builddir;
char *path;
int ret;
g_assert_nonnull ((builddir = g_getenv ("G_TEST_BUILDDIR")));
path = g_build_filename (builddir, libname, NULL);
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/constructor/application", test_app);
g_test_add_data_func ("/constructor/library", path, test_lib);
ret = g_test_run ();
g_free (path);
return ret;
}
#endif /* !BUILD_LIBRARY */

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@ -306,6 +306,20 @@ if host_machine.system() == 'windows'
} }
endif endif
if host_machine.system() == 'windows' or have_dlopen_dlsym
constructor_lib = shared_library('constructor-lib',
'constructor.c',
c_args: ['-DBUILD_LIBRARY'],
dependencies: [libglib_dep],
install : false)
glib_tests += {
'constructor' : {
'install': false,
'c_args': ['-DLIB_NAME=' + fs.name(constructor_lib.full_path())]
}
}
endif
foreach test_name, extra_args : glib_tests foreach test_name, extra_args : glib_tests
foreach std: extra_args.get('c_standards', []) foreach std: extra_args.get('c_standards', [])
if c_standards.has_key(std) if c_standards.has_key(std)