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1 /* GLIB - Library of useful routines for C programming |
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2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
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3 * Portions copyright (c) 2006 Nokia Corporation. All rights reserved. |
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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 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 |
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17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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18 * Boston, MA 02111-1307, USA. |
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19 */ |
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20 |
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21 /* |
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22 * Modified by the GLib Team and others 1997-2000. See the AUTHORS |
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23 * file for a list of people on the GLib Team. See the ChangeLog |
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24 * files for a list of changes. These files are distributed with |
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25 * GLib at ftp://ftp.gtk.org/pub/gtk/. |
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26 */ |
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27 |
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28 /* |
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29 * MT safe ; except for g_on_error_stack_trace, but who wants thread safety |
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30 * then |
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31 */ |
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32 |
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33 #include "config.h" |
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34 |
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35 #ifndef __SYMBIAN32__ |
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36 #include <signal.h> |
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37 #endif /* __SYMBIAN32__ */ |
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38 #include <stdarg.h> |
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39 #include <stdio.h> |
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40 #include <stdlib.h> |
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41 #include "glib.h" |
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42 #include "gprintfint.h" |
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43 |
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44 #ifdef HAVE_SYS_TIME_H |
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45 #include <sys/time.h> |
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46 #endif |
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47 #ifdef HAVE_SYS_TIMES_H |
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48 #include <sys/times.h> |
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49 #endif |
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50 #include <sys/types.h> |
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51 #ifdef HAVE_SYS_WAIT_H |
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52 #include <sys/wait.h> |
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53 #endif |
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54 |
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55 #include <time.h> |
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56 #ifdef HAVE_UNISTD_H |
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57 #include <unistd.h> |
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58 #endif |
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59 |
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60 #ifdef HAVE_SYS_SELECT_H |
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61 #include <sys/select.h> |
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62 #endif /* HAVE_SYS_SELECT_H */ |
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63 |
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64 #ifdef STDC_HEADERS |
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65 #include <string.h> /* for bzero on BSD systems */ |
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66 #endif |
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67 |
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68 #ifdef G_OS_WIN32 |
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69 # define STRICT /* Strict typing, please */ |
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70 # define _WIN32_WINDOWS 0x0401 /* to get IsDebuggerPresent */ |
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71 # include <windows.h> |
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72 # undef STRICT |
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73 #endif |
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74 |
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75 #ifndef NO_FD_SET |
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76 # define SELECT_MASK fd_set |
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77 #else |
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78 # if defined(_IBMR2) |
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79 # define SELECT_MASK void |
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80 # else |
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81 # define SELECT_MASK int |
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82 # endif |
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83 #endif |
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84 |
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85 #include "galias.h" |
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86 |
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87 #ifdef __SYMBIAN32__ |
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88 #include <glib_wsd.h> |
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89 #endif /* __SYMBIAN32__ */ |
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90 |
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91 |
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92 #if !defined(G_OS_WIN32) && !defined(__SYMBIAN32__) |
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93 static void stack_trace (char **args); |
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94 #endif |
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95 |
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96 #if EMULATOR |
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97 |
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98 PLS(glib_on_error_halt,gbacktrace,volatile gboolean) |
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99 #define glib_on_error_halt (*FUNCTION_NAME(glib_on_error_halt ,gbacktrace)()) |
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100 |
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101 #else |
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102 |
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103 extern volatile gboolean glib_on_error_halt; |
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104 volatile gboolean glib_on_error_halt = TRUE; |
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105 |
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106 #endif /* EMULATOR */ |
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107 |
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108 #ifdef __SYMBIAN32__ |
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109 EXPORT_C volatile gboolean *_glib_on_error_halt() |
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110 { |
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111 return &glib_on_error_halt; |
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112 } |
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113 #endif /* __SYMBIAN32__ */ |
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114 |
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115 EXPORT_C void |
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116 g_on_error_query (const gchar *prg_name) |
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117 { |
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118 #ifndef G_OS_WIN32 |
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119 static const gchar * const query1 = "[E]xit, [H]alt"; |
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120 static const gchar * const query2 = ", show [S]tack trace"; |
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121 static const gchar * const query3 = " or [P]roceed"; |
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122 gchar buf[16]; |
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123 |
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124 if (!prg_name) |
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125 prg_name = g_get_prgname (); |
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126 |
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127 retry: |
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128 |
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129 if (prg_name) |
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130 _g_fprintf (stdout, |
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131 "%s (pid:%u): %s%s%s: ", |
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132 prg_name, |
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133 (guint) getpid (), |
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134 query1, |
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135 query2, |
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136 query3); |
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137 else |
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138 _g_fprintf (stdout, |
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139 "(process:%u): %s%s: ", |
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140 (guint) getpid (), |
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141 query1, |
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142 query3); |
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143 fflush (stdout); |
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144 |
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145 if (isatty(0) && isatty(1)) |
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146 fgets (buf, 8, stdin); |
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147 else |
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148 strcpy (buf, "E\n"); |
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149 |
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150 if ((buf[0] == 'E' || buf[0] == 'e') |
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151 && buf[1] == '\n') |
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152 _exit (0); |
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153 else if ((buf[0] == 'P' || buf[0] == 'p') |
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154 && buf[1] == '\n') |
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155 return; |
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156 else if (prg_name |
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157 && (buf[0] == 'S' || buf[0] == 's') |
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158 && buf[1] == '\n') |
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159 { |
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160 g_on_error_stack_trace (prg_name); |
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161 goto retry; |
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162 } |
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163 else if ((buf[0] == 'H' || buf[0] == 'h') |
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164 && buf[1] == '\n') |
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165 { |
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166 while (glib_on_error_halt) |
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167 ; |
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168 glib_on_error_halt = TRUE; |
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169 return; |
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170 } |
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171 else |
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172 goto retry; |
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173 #else |
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174 if (!prg_name) |
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175 prg_name = g_get_prgname (); |
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176 |
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177 MessageBox (NULL, "g_on_error_query called, program terminating", |
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178 (prg_name && *prg_name) ? prg_name : NULL, |
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179 MB_OK|MB_ICONERROR); |
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180 _exit(0); |
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181 #endif |
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182 } |
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183 |
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184 EXPORT_C void |
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185 g_on_error_stack_trace (const gchar *prg_name) |
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186 { |
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187 #if (defined(G_OS_UNIX) || defined(G_OS_BEOS)) && !defined(__SYMBIAN32__) |
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188 pid_t pid; |
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189 gchar buf[16]; |
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190 gchar *args[4] = { "gdb", NULL, NULL, NULL }; |
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191 int status; |
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192 |
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193 if (!prg_name) |
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194 return; |
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195 |
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196 _g_sprintf (buf, "%u", (guint) getpid ()); |
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197 |
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198 args[1] = (gchar*) prg_name; |
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199 args[2] = buf; |
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200 |
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201 pid = fork (); |
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202 if (pid == 0) |
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203 { |
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204 stack_trace (args); |
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205 _exit (0); |
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206 } |
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207 else if (pid == (pid_t) -1) |
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208 { |
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209 perror ("unable to fork gdb"); |
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210 return; |
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211 } |
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212 |
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213 waitpid (pid, &status, 0); |
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214 #elif defined(__SYMBIAN32__) |
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215 abort(); |
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216 #else |
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217 if (IsDebuggerPresent ()) |
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218 G_BREAKPOINT (); |
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219 else |
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220 abort (); |
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221 #endif |
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222 } |
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223 |
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224 #if !defined G_OS_WIN32 && !defined __SYMBIAN32__ |
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225 |
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226 static gboolean stack_trace_done = FALSE; |
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227 |
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228 static void |
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229 stack_trace_sigchld (int signum) |
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230 { |
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231 stack_trace_done = TRUE; |
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232 } |
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233 |
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234 static void |
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235 stack_trace (char **args) |
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236 { |
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237 pid_t pid; |
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238 int in_fd[2]; |
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239 int out_fd[2]; |
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240 SELECT_MASK fdset; |
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241 SELECT_MASK readset; |
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242 struct timeval tv; |
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243 int sel, index, state; |
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244 char buffer[256]; |
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245 char c; |
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246 |
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247 stack_trace_done = FALSE; |
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248 signal (SIGCHLD, stack_trace_sigchld); |
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249 |
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250 if ((pipe (in_fd) == -1) || (pipe (out_fd) == -1)) |
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251 { |
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252 perror ("unable to open pipe"); |
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253 _exit (0); |
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254 } |
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255 |
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256 pid = fork (); |
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257 if (pid == 0) |
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258 { |
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259 close (0); dup (in_fd[0]); /* set the stdin to the in pipe */ |
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260 close (1); dup (out_fd[1]); /* set the stdout to the out pipe */ |
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261 close (2); dup (out_fd[1]); /* set the stderr to the out pipe */ |
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262 |
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263 execvp (args[0], args); /* exec gdb */ |
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264 perror ("exec failed"); |
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265 _exit (0); |
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266 } |
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267 else if (pid == (pid_t) -1) |
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268 { |
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269 perror ("unable to fork"); |
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270 _exit (0); |
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271 } |
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272 |
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273 FD_ZERO (&fdset); |
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274 FD_SET (out_fd[0], &fdset); |
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275 |
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276 write (in_fd[1], "backtrace\n", 10); |
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277 write (in_fd[1], "p x = 0\n", 8); |
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278 write (in_fd[1], "quit\n", 5); |
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279 |
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280 index = 0; |
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281 state = 0; |
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282 |
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283 while (1) |
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284 { |
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285 readset = fdset; |
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286 tv.tv_sec = 1; |
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287 tv.tv_usec = 0; |
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288 |
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289 sel = select (FD_SETSIZE, &readset, NULL, NULL, &tv); |
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290 if (sel == -1) |
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291 break; |
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292 |
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293 if ((sel > 0) && (FD_ISSET (out_fd[0], &readset))) |
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294 { |
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295 if (read (out_fd[0], &c, 1)) |
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296 { |
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297 switch (state) |
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298 { |
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299 case 0: |
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300 if (c == '#') |
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301 { |
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302 state = 1; |
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303 index = 0; |
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304 buffer[index++] = c; |
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305 } |
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306 break; |
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307 case 1: |
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308 buffer[index++] = c; |
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309 if ((c == '\n') || (c == '\r')) |
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310 { |
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311 buffer[index] = 0; |
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312 _g_fprintf (stdout, "%s", buffer); |
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313 state = 0; |
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314 index = 0; |
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315 } |
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316 break; |
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317 default: |
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318 break; |
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319 } |
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320 } |
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321 } |
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322 else if (stack_trace_done) |
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323 break; |
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324 } |
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325 |
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326 close (in_fd[0]); |
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327 close (in_fd[1]); |
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328 close (out_fd[0]); |
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329 close (out_fd[1]); |
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330 _exit (0); |
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331 } |
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332 |
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333 #endif /* !G_OS_WIN32 */ |
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334 |
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335 #define __G_BACKTRACE_C__ |
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336 #include "galiasdef.c" |