/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
/* Cairo - a vector graphics library with display and print output
*
* Copyright © 2005 Red Hat , Inc .
*
* This library is free software ; you can redistribute it and / or
* modify it either under the terms of the GNU Lesser General Public
* License version 2 . 1 as published by the Free Software Foundation
* ( the " LGPL " ) or , at your option , under the terms of the Mozilla
* Public License Version 1 . 1 ( the " MPL " ) . If you do not alter this
* notice , a recipient may use your version of this file under either
* the MPL or the LGPL .
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING - LGPL - 2 . 1 ; if not , write to the Free Software
* Foundation , Inc . , 51 Franklin Street , Suite 500 , Boston , MA 02110 - 1335 , USA
* You should have received a copy of the MPL along with this library
* in the file COPYING - MPL - 1 . 1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1 . 1 ( the " License " ) ; you may not use this file except in
* compliance with the License . You may obtain a copy of the License at
* http : //www.mozilla.org/MPL/
*
* This software is distributed on an " AS IS " basis , WITHOUT WARRANTY
* OF ANY KIND , either express or implied . See the LGPL or the MPL for
* the specific language governing rights and limitations .
*
* The Original Code is the cairo graphics library .
*
* The Initial Developer of the Original Code is Red Hat , Inc .
*
* Contributor ( s ) :
* Owen Taylor < otaylor @ redhat . com >
* Stuart Parmenter < stuart @ mozilla . com >
* Vladimir Vukicevic < vladimir @ pobox . com >
*/
/* This file should include code that is system-specific, not
* feature - specific . For example , the DLL initialization / finalization
* code on Win32 or OS / 2 must live here ( not in cairo - whatever - surface . c ) .
* Same about possible ELF - specific code .
*
* And no other function should live here .
*/
#include "cairoint.h"
#include <windows.h>
/**
* _ cairo_win32_print_api_error :
* @ context : context string to display along with the error
* @ api : name of the failing api
*
* Helper function to dump out a human readable form of the
* current error code .
*
* Return value : A cairo status code for the error code
**/
cairo_status_t
_cairo_win32_print_api_error (const char *context, const char *api)
{
const DWORD lang_id = MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT);
const DWORD flags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_IGNORE_INSERTS |
FORMAT_MESSAGE_FROM_SYSTEM;
const DWORD last_error = GetLastError ();
void *lpMsgBuf = NULL;
if (!FormatMessageW (flags, NULL, last_error, lang_id, (LPWSTR) &lpMsgBuf, 0 , NULL)) {
fprintf (stderr, "%s: %s failed with error code %lu\n" , context, api, last_error);
}
else {
fprintf (stderr, "%s: %s failed - %S\n" , context, api, (wchar_t *)lpMsgBuf);
LocalFree (lpMsgBuf);
}
return _cairo_error (CAIRO_STATUS_WIN32_GDI_ERROR);
}
/**
* _ cairo_win32_load_library_from_system32 :
* @ name : name of the module to load from System32
*
* Helper function to load system modules in the System32
* folder .
*
* Return value : An module HANDLE , NULL on error .
**/
HMODULE
_cairo_win32_load_library_from_system32 (const wchar_t *name)
{
HMODULE module_handle;
module_handle = LoadLibraryExW (name, NULL, LOAD_LIBRARY_SEARCH_SYSTEM32);
if (module_handle == NULL) {
DWORD code = GetLastError();
if (code == ERROR_INVALID_PARAMETER) {
/* Support for flag LOAD_LIBRARY_SEARCH_SYSTEM32 was backported
* to Windows Vista / 7 with Update KB2533623 . If the flag is
* not supported, simply use LoadLibrary */
return LoadLibraryW (name);
}
}
return module_handle;
}
#if CAIRO_MUTEX_IMPL_WIN32
static void NTAPI
cairo_win32_tls_callback (PVOID hinstance, DWORD dwReason, PVOID lpvReserved)
{
switch (dwReason) {
case DLL_PROCESS_ATTACH:
CAIRO_MUTEX_INITIALIZE ();
break ;
case DLL_PROCESS_DETACH:
if (lpvReserved == NULL) {
CAIRO_MUTEX_FINALIZE ();
}
break ;
}
}
#ifdef _MSC_VER
#ifdef _M_IX86
# define SYMBOL_PREFIX "_"
#else
# define SYMBOL_PREFIX ""
#endif
#ifdef __cplusplus
# define EXTERN_C_BEGIN extern "C" {
# define EXTERN_C_END }
# define EXTERN_CONST extern const
#else
# define EXTERN_C_BEGIN
# define EXTERN_C_END
# define EXTERN_CONST const
#endif
#define DEFINE_TLS_CALLBACK(func) \
__pragma (section (".CRT$XLD" , long , read)) \
\
static void NTAPI func (PVOID, DWORD, PVOID); \
\
EXTERN_C_BEGIN \
__declspec (allocate (".CRT$XLD" )) \
EXTERN_CONST PIMAGE_TLS_CALLBACK _ptr_## func = func; \
EXTERN_C_END \
\
__pragma (comment (linker, "/INCLUDE:" SYMBOL_PREFIX "_tls_used" )) \
__pragma (comment (linker, "/INCLUDE:" SYMBOL_PREFIX "_ptr_" #func ))
#else /* _MSC_VER */
#define DEFINE_TLS_CALLBACK(func) \
static void NTAPI func (PVOID, DWORD, PVOID); \
\
__attribute__ ((used, section (".CRT$XLD" ))) \
static const PIMAGE_TLS_CALLBACK _ptr_## func = func;
#endif /* !_MSC_VER */
DEFINE_TLS_CALLBACK (cairo_win32_tls_callback);
#endif /* CAIRO_MUTEX_IMPL_WIN32 */
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