| 1 | /* Invalid parameter handler for MSVC runtime libraries. |
| 2 | Copyright (C) 2011-2012 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 Lesser General Public License as published by |
| 6 | the Free Software Foundation; either version 2, 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 Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser 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. */ |
| 17 | |
| 18 | #include <config.h> |
| 19 | |
| 20 | /* Specification. */ |
| 21 | #include "msvc-inval.h" |
| 22 | |
| 23 | #if HAVE_MSVC_INVALID_PARAMETER_HANDLER \ |
| 24 | && !(MSVC_INVALID_PARAMETER_HANDLING == SANE_LIBRARY_HANDLING) |
| 25 | |
| 26 | /* Get _invalid_parameter_handler type and _set_invalid_parameter_handler |
| 27 | declaration. */ |
| 28 | # include <stdlib.h> |
| 29 | |
| 30 | # if MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING |
| 31 | |
| 32 | static void cdecl |
| 33 | gl_msvc_invalid_parameter_handler (const wchar_t *expression, |
| 34 | const wchar_t *function, |
| 35 | const wchar_t *file, |
| 36 | unsigned int line, |
| 37 | uintptr_t dummy) |
| 38 | { |
| 39 | } |
| 40 | |
| 41 | # else |
| 42 | |
| 43 | /* Get declarations of the native Windows API functions. */ |
| 44 | # define WIN32_LEAN_AND_MEAN |
| 45 | # include <windows.h> |
| 46 | |
| 47 | # if defined _MSC_VER |
| 48 | |
| 49 | static void cdecl |
| 50 | gl_msvc_invalid_parameter_handler (const wchar_t *expression, |
| 51 | const wchar_t *function, |
| 52 | const wchar_t *file, |
| 53 | unsigned int line, |
| 54 | uintptr_t dummy) |
| 55 | { |
| 56 | RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL); |
| 57 | } |
| 58 | |
| 59 | # else |
| 60 | |
| 61 | /* An index to thread-local storage. */ |
| 62 | static DWORD tls_index; |
| 63 | static int tls_initialized /* = 0 */; |
| 64 | |
| 65 | /* Used as a fallback only. */ |
| 66 | static struct gl_msvc_inval_per_thread not_per_thread; |
| 67 | |
| 68 | struct gl_msvc_inval_per_thread * |
| 69 | gl_msvc_inval_current (void) |
| 70 | { |
| 71 | if (!tls_initialized) |
| 72 | { |
| 73 | tls_index = TlsAlloc (); |
| 74 | tls_initialized = 1; |
| 75 | } |
| 76 | if (tls_index == TLS_OUT_OF_INDEXES) |
| 77 | /* TlsAlloc had failed. */ |
| 78 | return ¬_per_thread; |
| 79 | else |
| 80 | { |
| 81 | struct gl_msvc_inval_per_thread *pointer = |
| 82 | (struct gl_msvc_inval_per_thread *) TlsGetValue (tls_index); |
| 83 | if (pointer == NULL) |
| 84 | { |
| 85 | /* First call. Allocate a new 'struct gl_msvc_inval_per_thread'. */ |
| 86 | pointer = |
| 87 | (struct gl_msvc_inval_per_thread *) |
| 88 | malloc (sizeof (struct gl_msvc_inval_per_thread)); |
| 89 | if (pointer == NULL) |
| 90 | /* Could not allocate memory. Use the global storage. */ |
| 91 | pointer = ¬_per_thread; |
| 92 | TlsSetValue (tls_index, pointer); |
| 93 | } |
| 94 | return pointer; |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | static void cdecl |
| 99 | gl_msvc_invalid_parameter_handler (const wchar_t *expression, |
| 100 | const wchar_t *function, |
| 101 | const wchar_t *file, |
| 102 | unsigned int line, |
| 103 | uintptr_t dummy) |
| 104 | { |
| 105 | struct gl_msvc_inval_per_thread *current = gl_msvc_inval_current (); |
| 106 | if (current->restart_valid) |
| 107 | longjmp (current->restart, 1); |
| 108 | else |
| 109 | /* An invalid parameter notification from outside the gnulib code. |
| 110 | Give the caller a chance to intervene. */ |
| 111 | RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL); |
| 112 | } |
| 113 | |
| 114 | # endif |
| 115 | |
| 116 | # endif |
| 117 | |
| 118 | static int gl_msvc_inval_initialized /* = 0 */; |
| 119 | |
| 120 | void |
| 121 | gl_msvc_inval_ensure_handler (void) |
| 122 | { |
| 123 | if (gl_msvc_inval_initialized == 0) |
| 124 | { |
| 125 | _set_invalid_parameter_handler (gl_msvc_invalid_parameter_handler); |
| 126 | gl_msvc_inval_initialized = 1; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | #endif |