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annotate src/SDL_assert.c @ 5170:88c656ffea44

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Fixed crash if SDL_VideoDriverName() is passed a NULL namebuf
author Sam Lantinga <slouken@libsdl.org>
date Thu, 03 Feb 2011 16:57:38 -0800
parents 327f181542f1
children b530ef003506
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #include "SDL.h"
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24 #include "SDL_atomic.h"
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25 #include "SDL_assert.h"
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26 #include "SDL_assert_c.h"
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27 #include "video/SDL_sysvideo.h"
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28
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29 #ifdef __WIN32__
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30 #include "core/windows/SDL_windows.h"
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31
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32 #ifndef WS_OVERLAPPEDWINDOW
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33 #define WS_OVERLAPPEDWINDOW 0
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34 #endif
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35 #else /* fprintf, _exit(), etc. */
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36 #include <stdio.h>
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37 #include <stdlib.h>
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38 #include <unistd.h>
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39 #endif
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40
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41 static SDL_assert_state
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42 SDL_PromptAssertion(const SDL_assert_data *data, void *userdata);
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43
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44 /*
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45 * We keep all triggered assertions in a singly-linked list so we can
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46 * generate a report later.
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47 */
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48 static SDL_assert_data assertion_list_terminator = { 0, 0, 0, 0, 0, 0, 0 };
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49 static SDL_assert_data *triggered_assertions = &assertion_list_terminator;
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50
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51 static SDL_mutex *assertion_mutex = NULL;
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52 static SDL_AssertionHandler assertion_handler = SDL_PromptAssertion;
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53 static void *assertion_userdata = NULL;
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54
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55 #ifdef __GNUC__
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56 static void
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57 debug_print(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
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58 #endif
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59
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60 static void
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61 debug_print(const char *fmt, ...)
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62 {
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63 #ifdef __WIN32__
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64 /* Format into a buffer for OutputDebugStringA(). */
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65 char buf[1024];
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66 char *startptr;
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67 char *ptr;
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68 LPTSTR tstr;
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69 int len;
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70 va_list ap;
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71 va_start(ap, fmt);
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72 len = (int) SDL_vsnprintf(buf, sizeof (buf), fmt, ap);
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73 va_end(ap);
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74
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75 /* Visual C's vsnprintf() may not null-terminate the buffer. */
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76 if ((len >= sizeof (buf)) || (len < 0)) {
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77 buf[sizeof (buf) - 1] = '\0';
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78 }
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79
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80 /* Write it, sorting out the Unix newlines... */
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81 startptr = buf;
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82 for (ptr = startptr; *ptr; ptr++) {
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83 if (*ptr == '\n') {
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84 *ptr = '\0';
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85 tstr = WIN_UTF8ToString(startptr);
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86 OutputDebugString(tstr);
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87 SDL_free(tstr);
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88 OutputDebugString(TEXT("\r\n"));
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89 startptr = ptr+1;
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90 }
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91 }
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92
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93 /* catch that last piece if it didn't have a newline... */
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94 if (startptr != ptr) {
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95 tstr = WIN_UTF8ToString(startptr);
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96 OutputDebugString(tstr);
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97 SDL_free(tstr);
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98 }
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99 #else
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100 /* Unix has it easy. Just dump it to stderr. */
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101 va_list ap;
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102 va_start(ap, fmt);
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103 vfprintf(stderr, fmt, ap);
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104 va_end(ap);
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105 fflush(stderr);
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106 #endif
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107 }
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108
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109
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110 #ifdef __WIN32__
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111 static SDL_assert_state SDL_Windows_AssertChoice = SDL_ASSERTION_ABORT;
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112 static const SDL_assert_data *SDL_Windows_AssertData = NULL;
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113
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114 static LRESULT CALLBACK
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115 SDL_Assertion_WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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116 {
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117 switch (msg)
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118 {
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119 case WM_CREATE:
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120 {
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121 /* !!! FIXME: all this code stinks. */
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122 const SDL_assert_data *data = SDL_Windows_AssertData;
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123 char buf[1024];
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124 LPTSTR tstr;
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125 const int w = 100;
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126 const int h = 25;
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127 const int gap = 10;
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128 int x = gap;
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129 int y = 50;
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130 int len;
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131 int i;
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132 static const struct {
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133 LPCTSTR name;
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134 SDL_assert_state state;
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135 } buttons[] = {
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136 {TEXT("Abort"), SDL_ASSERTION_ABORT },
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137 {TEXT("Break"), SDL_ASSERTION_BREAK },
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138 {TEXT("Retry"), SDL_ASSERTION_RETRY },
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139 {TEXT("Ignore"), SDL_ASSERTION_IGNORE },
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140 {TEXT("Always Ignore"), SDL_ASSERTION_ALWAYS_IGNORE },
3647
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141 };
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142
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143 len = (int) SDL_snprintf(buf, sizeof (buf),
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144 "Assertion failure at %s (%s:%d), triggered %u time%s:\r\n '%s'",
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diff changeset
145 data->function, data->filename, data->linenum,
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146 data->trigger_count, (data->trigger_count == 1) ? "" : "s",
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147 data->condition);
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148 if ((len < 0) || (len >= sizeof (buf))) {
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149 buf[sizeof (buf) - 1] = '\0';
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150 }
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151
5088
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152 tstr = WIN_UTF8ToString(buf);
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153 CreateWindow(TEXT("STATIC"), tstr,
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154 WS_VISIBLE | WS_CHILD | SS_LEFT,
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155 x, y, 550, 100,
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156 hwnd, (HMENU) 1, NULL, NULL);
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157 SDL_free(tstr);
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158 y += 110;
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159
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160 for (i = 0; i < (sizeof (buttons) / sizeof (buttons[0])); i++) {
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161 CreateWindow(TEXT("BUTTON"), buttons[i].name,
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162 WS_VISIBLE | WS_CHILD,
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163 x, y, w, h,
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164 hwnd, (HMENU) buttons[i].state, NULL, NULL);
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165 x += w + gap;
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166 }
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167 break;
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168 }
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169
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170 case WM_COMMAND:
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171 SDL_Windows_AssertChoice = ((SDL_assert_state) (LOWORD(wParam)));
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172 SDL_Windows_AssertData = NULL;
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173 break;
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174
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175 case WM_DESTROY:
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176 SDL_Windows_AssertData = NULL;
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177 break;
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178 }
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179
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180 return DefWindowProc(hwnd, msg, wParam, lParam);
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181 }
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182
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183 static SDL_assert_state
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184 SDL_PromptAssertion_windows(const SDL_assert_data *data)
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185 {
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186 HINSTANCE hInstance = 0; /* !!! FIXME? */
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187 HWND hwnd;
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188 MSG msg;
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189 WNDCLASS wc = {0};
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190
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191 SDL_Windows_AssertChoice = SDL_ASSERTION_ABORT;
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192 SDL_Windows_AssertData = data;
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193
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194 wc.lpszClassName = TEXT("SDL_assert");
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195 wc.hInstance = hInstance ;
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196 wc.hbrBackground = GetSysColorBrush(COLOR_3DFACE);
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197 wc.lpfnWndProc = SDL_Assertion_WndProc;
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198 wc.hCursor = LoadCursor(0, IDC_ARROW);
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199
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200 RegisterClass(&wc);
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diff changeset
201 hwnd = CreateWindow(wc.lpszClassName, TEXT("SDL assertion failure"),
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202 WS_OVERLAPPEDWINDOW | WS_VISIBLE,
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203 150, 150, 570, 260, 0, 0, hInstance, 0);
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204
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205 while (GetMessage(&msg, NULL, 0, 0) && (SDL_Windows_AssertData != NULL)) {
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diff changeset
206 TranslateMessage(&msg);
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207 DispatchMessage(&msg);
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diff changeset
208 }
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209
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diff changeset
210 DestroyWindow(hwnd);
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diff changeset
211 UnregisterClass(wc.lpszClassName, hInstance);
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diff changeset
212 return SDL_Windows_AssertChoice;
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parents:
diff changeset
213 }
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diff changeset
214 #endif
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diff changeset
215
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diff changeset
216
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diff changeset
217 static void SDL_AddAssertionToReport(SDL_assert_data *data)
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diff changeset
218 {
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diff changeset
219 /* (data) is always a static struct defined with the assert macros, so
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diff changeset
220 we don't have to worry about copying or allocating them. */
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diff changeset
221 if (data->next == NULL) { /* not yet added? */
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diff changeset
222 data->next = triggered_assertions;
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diff changeset
223 triggered_assertions = data;
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diff changeset
224 }
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225 }
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226
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227
3647
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228 static void SDL_GenerateAssertionReport(void)
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229 {
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230 const SDL_assert_data *item;
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231
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232 /* only do this if the app hasn't assigned an assertion handler. */
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233 if (assertion_handler != SDL_PromptAssertion)
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diff changeset
234 return;
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235
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236 item = SDL_GetAssertionReport();
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237 if (item->condition)
3647
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diff changeset
238 {
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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239 debug_print("\n\nSDL assertion report.\n");
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diff changeset
240 debug_print("All SDL assertions between last init/quit:\n\n");
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241
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242 while (item->condition) {
3647
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diff changeset
243 debug_print(
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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diff changeset
244 "'%s'\n"
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diff changeset
245 " * %s (%s:%d)\n"
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diff changeset
246 " * triggered %u time%s.\n"
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diff changeset
247 " * always ignore: %s.\n",
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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diff changeset
248 item->condition, item->function, item->filename,
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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diff changeset
249 item->linenum, item->trigger_count,
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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diff changeset
250 (item->trigger_count == 1) ? "" : "s",
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
251 item->always_ignore ? "yes" : "no");
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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diff changeset
252 item = item->next;
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
253 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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diff changeset
254 debug_print("\n");
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diff changeset
255
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diff changeset
256 SDL_ResetAssertionReport();
3647
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diff changeset
257 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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diff changeset
258 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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diff changeset
259
3661
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diff changeset
260 static void SDL_ExitProcess(int exitcode)
3647
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diff changeset
261 {
5088
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diff changeset
262 #ifdef __WIN32__
3647
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diff changeset
263 ExitProcess(42);
3656
f17ea6f49745 Assume _exit() is available. It may be, even if unix isn't defined.
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diff changeset
264 #else
3647
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diff changeset
265 _exit(42);
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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diff changeset
266 #endif
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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diff changeset
267 }
3661
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268
22b6a0c7ea6e Handle assertion failures during assertion handler.
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269 static void SDL_AbortAssertion(void)
22b6a0c7ea6e Handle assertion failures during assertion handler.
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diff changeset
270 {
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diff changeset
271 SDL_Quit();
22b6a0c7ea6e Handle assertion failures during assertion handler.
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diff changeset
272 SDL_ExitProcess(42);
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273 }
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274
3647
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275
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276 static SDL_assert_state
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diff changeset
277 SDL_PromptAssertion(const SDL_assert_data *data, void *userdata)
3647
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parents:
diff changeset
278 {
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parents:
diff changeset
279 const char *envr;
3657
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diff changeset
280 SDL_assert_state state = SDL_ASSERTION_ABORT;
3685
64ce267332c6 Switched from SDL_WindowID and SDL_TextureID to SDL_Window* and SDL_Texture* for code simplicity and improved performance.
Sam Lantinga <slouken@libsdl.org>
parents: 3671
diff changeset
281 SDL_Window *window;
3647
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parents:
diff changeset
282
3670
62b6a5b99918 Clean up assertion API for public use.
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parents: 3669
diff changeset
283 (void) userdata; /* unused in default handler. */
62b6a5b99918 Clean up assertion API for public use.
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parents: 3669
diff changeset
284
3647
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diff changeset
285 debug_print("\n\n"
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parents:
diff changeset
286 "Assertion failure at %s (%s:%d), triggered %u time%s:\n"
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parents:
diff changeset
287 " '%s'\n"
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parents:
diff changeset
288 "\n",
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
289 data->function, data->filename, data->linenum,
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
290 data->trigger_count, (data->trigger_count == 1) ? "" : "s",
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parents:
diff changeset
291 data->condition);
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parents:
diff changeset
292
3655
1cc7f0143c12 Moved SDL_FUNCTION out so it's always available, and added SDL_FILE and SDL_LINE
Sam Lantinga <slouken@libsdl.org>
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diff changeset
293 /* let env. variable override, so unit tests won't block in a GUI. */
3647
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parents:
diff changeset
294 envr = SDL_getenv("SDL_ASSERT");
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
295 if (envr != NULL) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
296 if (SDL_strcmp(envr, "abort") == 0) {
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parents:
diff changeset
297 return SDL_ASSERTION_ABORT;
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parents:
diff changeset
298 } else if (SDL_strcmp(envr, "break") == 0) {
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parents:
diff changeset
299 return SDL_ASSERTION_BREAK;
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parents:
diff changeset
300 } else if (SDL_strcmp(envr, "retry") == 0) {
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parents:
diff changeset
301 return SDL_ASSERTION_RETRY;
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parents:
diff changeset
302 } else if (SDL_strcmp(envr, "ignore") == 0) {
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
303 return SDL_ASSERTION_IGNORE;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
304 } else if (SDL_strcmp(envr, "always_ignore") == 0) {
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
305 return SDL_ASSERTION_ALWAYS_IGNORE;
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
306 } else {
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
307 return SDL_ASSERTION_ABORT; /* oh well. */
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
308 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
309 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
310
3657
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diff changeset
311 /* Leave fullscreen mode, if possible (scary!) */
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diff changeset
312 window = SDL_GetFocusWindow();
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parents: 3656
diff changeset
313 if (window) {
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diff changeset
314 if (SDL_GetWindowFlags(window) & SDL_WINDOW_FULLSCREEN) {
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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diff changeset
315 SDL_MinimizeWindow(window);
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diff changeset
316 } else {
3670
62b6a5b99918 Clean up assertion API for public use.
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parents: 3669
diff changeset
317 /* !!! FIXME: ungrab the input if we're not fullscreen? */
3657
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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parents: 3656
diff changeset
318 /* No need to mess with the window */
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diff changeset
319 window = 0;
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parents: 3656
diff changeset
320 }
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diff changeset
321 }
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diff changeset
322
3647
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parents:
diff changeset
323 /* platform-specific UI... */
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
324
5088
c2539ff054c8 Fixed compiling on Windows Mobile SDK 5.0 with Visual Studio 2008
Sam Lantinga <slouken@libsdl.org>
parents: 5064
diff changeset
325 #ifdef __WIN32__
3657
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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parents: 3656
diff changeset
326 state = SDL_PromptAssertion_windows(data);
3647
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parents:
diff changeset
327
3690
e431b888ac6c Fixed compilation on iPhone
Sam Lantinga <slouken@libsdl.org>
parents: 3685
diff changeset
328 #elif __MACOSX__
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
329 /* This has to be done in an Objective-C (*.m) file, so we call out. */
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
330 extern SDL_assert_state SDL_PromptAssertion_cocoa(const SDL_assert_data *);
3657
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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parents: 3656
diff changeset
331 state = SDL_PromptAssertion_cocoa(data);
3647
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parents:
diff changeset
332
3657
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diff changeset
333 #else
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
334 /* this is a little hacky. */
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
335 for ( ; ; ) {
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
336 char buf[32];
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
337 fprintf(stderr, "Abort/Break/Retry/Ignore/AlwaysIgnore? [abriA] : ");
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
338 fflush(stderr);
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
339 if (fgets(buf, sizeof (buf), stdin) == NULL) {
3657
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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parents: 3656
diff changeset
340 break;
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
341 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
342
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
343 if (SDL_strcmp(buf, "a") == 0) {
3657
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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parents: 3656
diff changeset
344 state = SDL_ASSERTION_ABORT;
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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parents: 3656
diff changeset
345 break;
3647
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parents:
diff changeset
346 } else if (SDL_strcmp(envr, "b") == 0) {
3657
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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parents: 3656
diff changeset
347 state = SDL_ASSERTION_BREAK;
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
Sam Lantinga <slouken@libsdl.org>
parents: 3656
diff changeset
348 break;
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
349 } else if (SDL_strcmp(envr, "r") == 0) {
3657
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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parents: 3656
diff changeset
350 state = SDL_ASSERTION_RETRY;
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
Sam Lantinga <slouken@libsdl.org>
parents: 3656
diff changeset
351 break;
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
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parents:
diff changeset
352 } else if (SDL_strcmp(envr, "i") == 0) {
3657
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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parents: 3656
diff changeset
353 state = SDL_ASSERTION_IGNORE;
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
Sam Lantinga <slouken@libsdl.org>
parents: 3656
diff changeset
354 break;
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
355 } else if (SDL_strcmp(envr, "A") == 0) {
3657
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
Sam Lantinga <slouken@libsdl.org>
parents: 3656
diff changeset
356 state = SDL_ASSERTION_ALWAYS_IGNORE;
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
Sam Lantinga <slouken@libsdl.org>
parents: 3656
diff changeset
357 break;
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
358 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
359 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
360 #endif
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
361
3657
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
Sam Lantinga <slouken@libsdl.org>
parents: 3656
diff changeset
362 /* Re-enter fullscreen mode */
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
Sam Lantinga <slouken@libsdl.org>
parents: 3656
diff changeset
363 if (window) {
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
Sam Lantinga <slouken@libsdl.org>
parents: 3656
diff changeset
364 SDL_RestoreWindow(window);
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
Sam Lantinga <slouken@libsdl.org>
parents: 3656
diff changeset
365 }
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
Sam Lantinga <slouken@libsdl.org>
parents: 3656
diff changeset
366
eaea59cee6f2 Leave fullscreen mode to pop an assertion dialog
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parents: 3656
diff changeset
367 return state;
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
368 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
369
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
370
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
371 SDL_assert_state
3655
1cc7f0143c12 Moved SDL_FUNCTION out so it's always available, and added SDL_FILE and SDL_LINE
Sam Lantinga <slouken@libsdl.org>
parents: 3651
diff changeset
372 SDL_ReportAssertion(SDL_assert_data *data, const char *func, const char *file,
1cc7f0143c12 Moved SDL_FUNCTION out so it's always available, and added SDL_FILE and SDL_LINE
Sam Lantinga <slouken@libsdl.org>
parents: 3651
diff changeset
373 int line)
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
374 {
3661
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
375 static int assertion_running = 0;
3662
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
376 static SDL_SpinLock spinlock = 0;
3661
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
377 SDL_assert_state state = SDL_ASSERTION_IGNORE;
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
378
3662
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
379 SDL_AtomicLock(&spinlock);
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
380 if (assertion_mutex == NULL) { /* never called SDL_Init()? */
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
381 assertion_mutex = SDL_CreateMutex();
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
382 if (assertion_mutex == NULL) {
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
383 SDL_AtomicUnlock(&spinlock);
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
384 return SDL_ASSERTION_IGNORE; /* oh well, I guess. */
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
385 }
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
386 }
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
387 SDL_AtomicUnlock(&spinlock);
6a0b3048f271 Handle assertion failures when SDL_Init() isn't called.
Ryan C. Gordon <icculus@icculus.org>
parents: 3661
diff changeset
388
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
389 if (SDL_LockMutex(assertion_mutex) < 0) {
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
390 return SDL_ASSERTION_IGNORE; /* oh well, I guess. */
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
391 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
392
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
393 /* doing this because Visual C is upset over assigning in the macro. */
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
394 if (data->trigger_count == 0) {
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
395 data->function = func;
3655
1cc7f0143c12 Moved SDL_FUNCTION out so it's always available, and added SDL_FILE and SDL_LINE
Sam Lantinga <slouken@libsdl.org>
parents: 3651
diff changeset
396 data->filename = file;
1cc7f0143c12 Moved SDL_FUNCTION out so it's always available, and added SDL_FILE and SDL_LINE
Sam Lantinga <slouken@libsdl.org>
parents: 3651
diff changeset
397 data->linenum = line;
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
398 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
399
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
400 SDL_AddAssertionToReport(data);
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
401
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
402 data->trigger_count++;
3661
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
403
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
404 assertion_running++;
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
405 if (assertion_running > 1) { /* assert during assert! Abort. */
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
406 if (assertion_running == 2) {
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
407 SDL_AbortAssertion();
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
408 } else if (assertion_running == 3) { /* Abort asserted! */
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
409 SDL_ExitProcess(42);
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
410 } else {
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
411 while (1) { /* do nothing but spin; what else can you do?! */ }
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
412 }
3647
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
413 }
c5925cd41955 First pass at Ryan's assertion code, minor tweaks to come.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
414
3661
22b6a0c7ea6e Handle assertion failures during assertion handler.
Ryan C. Gordon <icculus@icculus.org>
parents: 3657
diff changeset
415 if (!data->always_ignore) {
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416 state = assertion_handler(data, assertion_userdata);
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417 }
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418
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419 switch (state)
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420 {
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421 case SDL_ASSERTION_ABORT:
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422 SDL_AbortAssertion();
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423 return SDL_ASSERTION_IGNORE; /* shouldn't return, but oh well. */
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424
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425 case SDL_ASSERTION_ALWAYS_IGNORE:
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426 state = SDL_ASSERTION_IGNORE;
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427 data->always_ignore = 1;
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428 break;
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429
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430 case SDL_ASSERTION_IGNORE:
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431 case SDL_ASSERTION_RETRY:
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432 case SDL_ASSERTION_BREAK:
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433 break; /* macro handles these. */
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434 }
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435
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436 assertion_running--;
3647
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437 SDL_UnlockMutex(assertion_mutex);
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438
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439 return state;
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440 }
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441
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442
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443 int SDL_AssertionsInit(void)
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444 {
3664
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445 /* this is a no-op at the moment. */
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446 return 0;
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447 }
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448
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449 void SDL_AssertionsQuit(void)
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450 {
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451 SDL_GenerateAssertionReport();
3664
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452 if (assertion_mutex != NULL) {
8bdc37b1a52a Handle assert init/quit better.
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453 SDL_DestroyMutex(assertion_mutex);
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454 assertion_mutex = NULL;
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455 }
3670
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456 }
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457
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458 void SDL_SetAssertionHandler(SDL_AssertionHandler handler, void *userdata)
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diff changeset
459 {
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diff changeset
460 if (handler != NULL) {
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461 assertion_handler = handler;
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462 assertion_userdata = userdata;
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463 } else {
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464 assertion_handler = SDL_PromptAssertion;
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465 assertion_userdata = NULL;
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466 }
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467 }
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468
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469 const SDL_assert_data *SDL_GetAssertionReport(void)
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470 {
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471 return triggered_assertions;
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472 }
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473
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474 void SDL_ResetAssertionReport(void)
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475 {
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476 SDL_assert_data *item = triggered_assertions;
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477 SDL_assert_data *next = NULL;
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478 for (item = triggered_assertions; item->condition; item = next) {
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diff changeset
479 next = (SDL_assert_data *) item->next;
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480 item->always_ignore = SDL_FALSE;
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481 item->trigger_count = 0;
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482 item->next = NULL;
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483 }
62b6a5b99918 Clean up assertion API for public use.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
484
62b6a5b99918 Clean up assertion API for public use.
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diff changeset
485 triggered_assertions = &assertion_list_terminator;
3647
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diff changeset
486 }
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parents:
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487
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parents:
diff changeset
488 /* vi: set ts=4 sw=4 expandtab: */