1 /* Invalid parameter handler for MSVC runtime libraries.
2 Copyright (C) 2011-2020 Free Software Foundation, Inc.
3
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)
7 any later version.
8
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.
13
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/>. */
16
17 #include <config.h>
18
19 /* Specification. */
20 #include "msvc-inval.h"
21
22 #if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
23 && !(MSVC_INVALID_PARAMETER_HANDLING == SANE_LIBRARY_HANDLING)
24
25 /* Get _invalid_parameter_handler type and _set_invalid_parameter_handler
26 declaration. */
27 # include <stdlib.h>
28
29 # if MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
30
31 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)32 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
33 const wchar_t *function,
34 const wchar_t *file,
35 unsigned int line,
36 uintptr_t dummy)
37 {
38 }
39
40 # else
41
42 /* Get declarations of the native Windows API functions. */
43 # define WIN32_LEAN_AND_MEAN
44 # include <windows.h>
45
46 # if defined _MSC_VER
47
48 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)49 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
50 const wchar_t *function,
51 const wchar_t *file,
52 unsigned int line,
53 uintptr_t dummy)
54 {
55 RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
56 }
57
58 # else
59
60 /* An index to thread-local storage. */
61 static DWORD tls_index;
62 static int tls_initialized /* = 0 */;
63
64 /* Used as a fallback only. */
65 static struct gl_msvc_inval_per_thread not_per_thread;
66
67 struct gl_msvc_inval_per_thread *
gl_msvc_inval_current(void)68 gl_msvc_inval_current (void)
69 {
70 if (!tls_initialized)
71 {
72 tls_index = TlsAlloc ();
73 tls_initialized = 1;
74 }
75 if (tls_index == TLS_OUT_OF_INDEXES)
76 /* TlsAlloc had failed. */
77 return ¬_per_thread;
78 else
79 {
80 struct gl_msvc_inval_per_thread *pointer =
81 (struct gl_msvc_inval_per_thread *) TlsGetValue (tls_index);
82 if (pointer == NULL)
83 {
84 /* First call. Allocate a new 'struct gl_msvc_inval_per_thread'. */
85 pointer =
86 (struct gl_msvc_inval_per_thread *)
87 malloc (sizeof (struct gl_msvc_inval_per_thread));
88 if (pointer == NULL)
89 /* Could not allocate memory. Use the global storage. */
90 pointer = ¬_per_thread;
91 TlsSetValue (tls_index, pointer);
92 }
93 return pointer;
94 }
95 }
96
97 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)98 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
99 const wchar_t *function,
100 const wchar_t *file,
101 unsigned int line,
102 uintptr_t dummy)
103 {
104 struct gl_msvc_inval_per_thread *current = gl_msvc_inval_current ();
105 if (current->restart_valid)
106 longjmp (current->restart, 1);
107 else
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);
111 }
112
113 # endif
114
115 # endif
116
117 static int gl_msvc_inval_initialized /* = 0 */;
118
119 void
gl_msvc_inval_ensure_handler(void)120 gl_msvc_inval_ensure_handler (void)
121 {
122 if (gl_msvc_inval_initialized == 0)
123 {
124 _set_invalid_parameter_handler (gl_msvc_invalid_parameter_handler);
125 gl_msvc_inval_initialized = 1;
126 }
127 }
128
129 #endif
130