annotate lib/msvc-inval.c @ 16229:daac1ca4c436

inttypes: Modernize. * lib/inttypes.in.h (strtoimax, strtoumax): Use the C++ safe idioms. * modules/inttypes-incomplete (Depends-on): Add snippet/c++defs. (Makefile.am): Update inttypes.h rule.
author Bruno Haible <bruno@clisp.org>
date Thu, 05 Jan 2012 18:42:08 +0100
parents ec738d6aeef5
children bb182ee4a09d
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1 /* Invalid parameter handler for MSVC runtime libraries.
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2 Copyright (C) 2011-2012 Free Software Foundation, Inc.
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2, or (at your option)
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7 any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License along
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15 with this program; if not, write to the Free Software Foundation,
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16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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17
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18 #include <config.h>
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19
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20 /* Specification. */
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21 #include "msvc-inval.h"
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22
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23 #if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
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24 && !(MSVC_INVALID_PARAMETER_HANDLING == SANE_LIBRARY_HANDLING)
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25
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26 /* Get _invalid_parameter_handler type and _set_invalid_parameter_handler
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27 declaration. */
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28 # include <stdlib.h>
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29
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30 # if MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
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31
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32 static void cdecl
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33 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
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34 const wchar_t *function,
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35 const wchar_t *file,
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36 unsigned int line,
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37 uintptr_t dummy)
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38 {
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39 }
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40
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41 # else
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42
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43 /* Get declarations of the native Windows API functions. */
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44 # define WIN32_LEAN_AND_MEAN
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45 # include <windows.h>
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46
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47 # if defined _MSC_VER
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48
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49 static void cdecl
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50 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
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51 const wchar_t *function,
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52 const wchar_t *file,
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53 unsigned int line,
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54 uintptr_t dummy)
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55 {
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56 RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
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57 }
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58
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59 # else
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60
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61 /* An index to thread-local storage. */
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62 static DWORD tls_index;
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63 static int tls_initialized /* = 0 */;
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64
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65 /* Used as a fallback only. */
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66 static struct gl_msvc_inval_per_thread not_per_thread;
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67
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68 struct gl_msvc_inval_per_thread *
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69 gl_msvc_inval_current (void)
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70 {
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71 if (!tls_initialized)
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72 {
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73 tls_index = TlsAlloc ();
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74 tls_initialized = 1;
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75 }
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76 if (tls_index == TLS_OUT_OF_INDEXES)
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77 /* TlsAlloc had failed. */
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78 return &not_per_thread;
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79 else
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80 {
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81 struct gl_msvc_inval_per_thread *pointer =
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82 (struct gl_msvc_inval_per_thread *) TlsGetValue (tls_index);
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83 if (pointer == NULL)
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84 {
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85 /* First call. Allocate a new 'struct gl_msvc_inval_per_thread'. */
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86 pointer =
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87 (struct gl_msvc_inval_per_thread *)
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88 malloc (sizeof (struct gl_msvc_inval_per_thread));
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89 if (pointer == NULL)
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90 /* Could not allocate memory. Use the global storage. */
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91 pointer = &not_per_thread;
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92 TlsSetValue (tls_index, pointer);
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93 }
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94 return pointer;
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95 }
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96 }
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97
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98 static void cdecl
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99 gl_msvc_invalid_parameter_handler (const wchar_t *expression,
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100 const wchar_t *function,
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101 const wchar_t *file,
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102 unsigned int line,
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103 uintptr_t dummy)
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104 {
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105 struct gl_msvc_inval_per_thread *current = gl_msvc_inval_current ();
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106 if (current->restart_valid)
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107 longjmp (current->restart, 1);
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108 else
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109 /* An invalid parameter notification from outside the gnulib code.
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110 Give the caller a chance to intervene. */
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111 RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
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112 }
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113
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114 # endif
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115
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116 # endif
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117
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118 static int gl_msvc_inval_initialized /* = 0 */;
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119
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120 void
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121 gl_msvc_inval_ensure_handler (void)
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122 {
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123 if (gl_msvc_inval_initialized == 0)
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124 {
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125 _set_invalid_parameter_handler (gl_msvc_invalid_parameter_handler);
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126 gl_msvc_inval_initialized = 1;
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127 }
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128 }
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129
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130 #endif