1 /* Invalid parameter handler for MSVC runtime libraries.
2 Copyright (C) 2011 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 2, 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, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
21 #include "msvc-inval.h"
23 #if HAVE_MSVC_INVALID_PARAMETER_HANDLER
25 /* Get declarations of the Win32 API functions. */
26 # define WIN32_LEAN_AND_MEAN
32 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
33 const wchar_t *function,
38 RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
43 /* An index to thread-local storage. */
44 static DWORD tls_index;
45 static int tls_initialized /* = 0 */;
47 /* Used as a fallback only. */
48 static struct gl_msvc_inval_per_thread not_per_thread;
50 struct gl_msvc_inval_per_thread *
51 gl_msvc_inval_current (void)
55 tls_index = TlsAlloc ();
58 if (tls_index == TLS_OUT_OF_INDEXES)
59 /* TlsAlloc had failed. */
60 return ¬_per_thread;
63 struct gl_msvc_inval_per_thread *pointer =
64 (struct gl_msvc_inval_per_thread *) TlsGetValue (tls_index);
67 /* First call. Allocate a new 'struct gl_msvc_inval_per_thread'. */
69 (struct gl_msvc_inval_per_thread *)
70 malloc (sizeof (struct gl_msvc_inval_per_thread));
72 /* Could not allocate memory. Use the global storage. */
73 pointer = ¬_per_thread;
74 TlsSetValue (tls_index, pointer);
81 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
82 const wchar_t *function,
87 struct gl_msvc_inval_per_thread *current = gl_msvc_inval_current ();
88 if (current->restart_valid)
89 longjmp (current->restart, 1);
91 /* An invalid parameter notification from outside the gnulib code.
92 Give the caller a chance to intervene. */
93 RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
98 static int gl_msvc_inval_initialized /* = 0 */;
101 gl_msvc_inval_ensure_handler (void)
103 if (gl_msvc_inval_initialized == 0)
105 _set_invalid_parameter_handler (gl_msvc_invalid_parameter_handler);
106 gl_msvc_inval_initialized = 1;