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/* Invalid parameter handler for MSVC runtime libraries.
Copyright (C) 2011-2014 Free Software Foundation, Inc.
This program 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, or (at your option)
any later version.
This program 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 program; if not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include "msvc-inval.h"
#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
&& !(MSVC_INVALID_PARAMETER_HANDLING == SANE_LIBRARY_HANDLING)
/* Get _invalid_parameter_handler type and _set_invalid_parameter_handler
declaration. */
# include <stdlib.h>
# if MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
static void __cdecl
gl_msvc_invalid_parameter_handler (const wchar_t *expression,
const wchar_t *function,
const wchar_t *file,
unsigned int line,
uintptr_t dummy)
{
}
# else
/* Get declarations of the native Windows API functions. */
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# if defined _MSC_VER
static void __cdecl
gl_msvc_invalid_parameter_handler (const wchar_t *expression,
const wchar_t *function,
const wchar_t *file,
unsigned int line,
uintptr_t dummy)
{
RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
}
# else
/* An index to thread-local storage. */
static DWORD tls_index;
static int tls_initialized /* = 0 */;
/* Used as a fallback only. */
static struct gl_msvc_inval_per_thread not_per_thread;
struct gl_msvc_inval_per_thread *
gl_msvc_inval_current (void)
{
if (!tls_initialized)
{
tls_index = TlsAlloc ();
tls_initialized = 1;
}
if (tls_index == TLS_OUT_OF_INDEXES)
/* TlsAlloc had failed. */
return ¬_per_thread;
else
{
struct gl_msvc_inval_per_thread *pointer =
(struct gl_msvc_inval_per_thread *) TlsGetValue (tls_index);
if (pointer == NULL)
{
/* First call. Allocate a new 'struct gl_msvc_inval_per_thread'. */
pointer =
(struct gl_msvc_inval_per_thread *)
malloc (sizeof (struct gl_msvc_inval_per_thread));
if (pointer == NULL)
/* Could not allocate memory. Use the global storage. */
pointer = ¬_per_thread;
TlsSetValue (tls_index, pointer);
}
return pointer;
}
}
static void __cdecl
gl_msvc_invalid_parameter_handler (const wchar_t *expression,
const wchar_t *function,
const wchar_t *file,
unsigned int line,
uintptr_t dummy)
{
struct gl_msvc_inval_per_thread *current = gl_msvc_inval_current ();
if (current->restart_valid)
longjmp (current->restart, 1);
else
/* An invalid parameter notification from outside the gnulib code.
Give the caller a chance to intervene. */
RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
}
# endif
# endif
static int gl_msvc_inval_initialized /* = 0 */;
void
gl_msvc_inval_ensure_handler (void)
{
if (gl_msvc_inval_initialized == 0)
{
_set_invalid_parameter_handler (gl_msvc_invalid_parameter_handler);
gl_msvc_inval_initialized = 1;
}
}
#endif
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