1 /* Invalid parameter handler for MSVC runtime libraries.
2 Copyright (C) 2011-2021 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License along
15 with this program; if not, see <https://www.gnu.org/licenses/>. */
20 #include "msvc-inval.h"
22 #if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
23 && !(MSVC_INVALID_PARAMETER_HANDLING == SANE_LIBRARY_HANDLING)
25 /* Get _invalid_parameter_handler type and _set_invalid_parameter_handler
29 # if MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
32 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
33 const wchar_t *function,
42 /* Get declarations of the native Windows API functions. */
43 # define WIN32_LEAN_AND_MEAN
49 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
50 const wchar_t *function,
55 RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
60 /* An index to thread-local storage. */
61 static DWORD tls_index;
62 static int tls_initialized /* = 0 */;
64 /* Used as a fallback only. */
65 static struct gl_msvc_inval_per_thread not_per_thread;
67 struct gl_msvc_inval_per_thread *
68 gl_msvc_inval_current (void)
72 tls_index = TlsAlloc ();
75 if (tls_index == TLS_OUT_OF_INDEXES)
76 /* TlsAlloc had failed. */
77 return ¬_per_thread;
80 struct gl_msvc_inval_per_thread *pointer =
81 (struct gl_msvc_inval_per_thread *) TlsGetValue (tls_index);
84 /* First call. Allocate a new 'struct gl_msvc_inval_per_thread'. */
86 (struct gl_msvc_inval_per_thread *)
87 malloc (sizeof (struct gl_msvc_inval_per_thread));
89 /* Could not allocate memory. Use the global storage. */
90 pointer = ¬_per_thread;
91 TlsSetValue (tls_index, pointer);
98 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
99 const wchar_t *function,
104 struct gl_msvc_inval_per_thread *current = gl_msvc_inval_current ();
105 if (current->restart_valid)
106 longjmp (current->restart, 1);
108 /* An invalid parameter notification from outside the gnulib code.
109 Give the caller a chance to intervene. */
110 RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
117 static int gl_msvc_inval_initialized /* = 0 */;
120 gl_msvc_inval_ensure_handler (void)
122 if (gl_msvc_inval_initialized == 0)
124 _set_invalid_parameter_handler (gl_msvc_invalid_parameter_handler);
125 gl_msvc_inval_initialized = 1;