1 | //libroar.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2012 |
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5 | * |
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6 | * This file is part of libroar a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * libroar is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | * NOTE for everyone want's to change something and send patches: |
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25 | * read README and HACKING! There a addition information on |
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26 | * the license of this document you need to read before you send |
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27 | * any patches. |
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28 | * |
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29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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30 | * or libpulse*: |
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31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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32 | * and are therefore GPL. Because of this it may be illigal to use |
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33 | * them with any software that uses libesd, libartsc or libpulse*. |
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34 | */ |
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35 | |
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36 | /* ckport options: |
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37 | * ckport: ignore-symbol: sleep of target win32 -- checked by configure |
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38 | */ |
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39 | |
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40 | #include "libroar.h" |
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41 | |
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42 | #ifndef roar_mm_mlock |
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43 | int roar_mm_mlock(const void *addr, size_t len) { |
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44 | #if defined(ROAR_TARGET_WIN32) |
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45 | /* GlobalLock() generates errors. Maybe we do not use correctly. |
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46 | * We just ignore that at the moment and throw NOSYS. |
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47 | * |
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48 | * return GlobalLock(addr) == addr ? 0 : -1; |
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49 | */ |
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50 | roar_err_set(ROAR_ERROR_NOSYS); |
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51 | return -1; |
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52 | #elif defined(ROAR_TARGET_MICROCONTROLLER) |
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53 | return 0; |
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54 | #elif defined(_SC_PAGESIZE) |
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55 | long sz = sysconf(_SC_PAGESIZE); |
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56 | unsigned long int pos = (unsigned long int) addr; |
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57 | |
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58 | len += sz - (len % sz); |
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59 | |
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60 | pos -= pos % sz; |
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61 | |
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62 | return mlock((void*)pos, len); |
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63 | #else |
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64 | roar_err_set(ROAR_ERROR_NOSYS); |
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65 | return -1; |
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66 | #endif |
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67 | } |
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68 | #endif |
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69 | |
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70 | #ifndef roar_mm_munlock |
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71 | int roar_mm_munlock(const void *addr, size_t len) { |
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72 | #if defined(ROAR_TARGET_WIN32) |
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73 | // TODO: find out what do do here. GlobalUnLock()? does such a function exist? |
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74 | // return GlobalLock(addr) == addr ? 0 : -1; |
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75 | roar_err_set(ROAR_ERROR_NOSYS); |
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76 | return -1; |
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77 | #elif defined(ROAR_TARGET_MICROCONTROLLER) |
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78 | return 0; |
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79 | #elif defined(_SC_PAGESIZE) |
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80 | long sz = sysconf(_SC_PAGESIZE); |
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81 | unsigned long int pos = (unsigned long int) addr; |
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82 | |
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83 | len += sz - (len % sz); |
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84 | |
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85 | pos -= pos % sz; |
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86 | |
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87 | return munlock((void*)pos, len); |
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88 | #else |
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89 | roar_err_set(ROAR_ERROR_NOSYS); |
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90 | return -1; |
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91 | #endif |
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92 | } |
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93 | #endif |
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94 | |
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95 | // for compatibility with old versions: |
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96 | int _ROAR_MLOCK(const void *addr, size_t len) { |
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97 | roar_debug_warn_obsolete("_ROAR_MLOCK", "roar_mm_mlock", NULL); |
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98 | return roar_mm_mlock(addr, len); |
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99 | } |
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100 | |
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101 | int roar_usleep(uint_least32_t t) { |
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102 | #ifdef ROAR_TARGET_WIN32 |
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103 | Sleep(t/(uint_least32_t)1000); |
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104 | return 0; |
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105 | #elif defined(ROAR_HAVE_NANOSLEEP) |
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106 | struct timespec tv; |
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107 | struct timespec left; |
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108 | |
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109 | if ( t > (uint_least32_t)1000000 ) { |
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110 | tv.tv_sec = t/(uint_least32_t)1000000; |
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111 | t -= tv.tv_sec*(uint_least32_t)1000000; |
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112 | } else { |
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113 | tv.tv_sec = 0; |
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114 | } |
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115 | |
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116 | tv.tv_nsec = t*(uint_least32_t)1000; |
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117 | |
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118 | while (nanosleep(&tv, &left) == -1) |
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119 | memcpy(&tv, &left, sizeof(tv)); |
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120 | return 0; |
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121 | #elif defined(ROAR_HAVE_USLEEP) |
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122 | usleep(t); |
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123 | return 0; |
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124 | #else |
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125 | ROAR_ERR("roar_usleep(t=%llu): can not sleep: not implemented", (long long unsigned int)t); |
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126 | roar_strap(ROAR_TRAP_GROUP_LIBROAR, "usleep.not-implemented"); |
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127 | roar_err_set(ROAR_ERROR_NOSYS); |
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128 | return -1; |
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129 | #endif |
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130 | } |
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131 | |
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132 | int roar_sleep(int t) { |
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133 | if ( t < 0 ) { |
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134 | roar_err_set(ROAR_ERROR_CAUSALITY); |
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135 | return -1; |
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136 | } |
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137 | |
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138 | #ifdef ROAR_TARGET_WIN32 |
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139 | Sleep(1000L*(long)t); |
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140 | #elif defined(ROAR_HAVE_SLEEP) |
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141 | while (t) |
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142 | t = sleep(t); |
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143 | #else |
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144 | while (t) { |
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145 | if ( roar_usleep(500000) == -1 ) |
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146 | return -1; |
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147 | if ( roar_usleep(500000) == -1 ) |
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148 | return -1; |
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149 | t--; |
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150 | } |
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151 | #endif |
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152 | |
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153 | return 0; |
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154 | } |
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155 | |
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156 | static pid_t _libroar_fork(void ** context, void * userdata) { |
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157 | #ifdef ROAR_HAVE_FORK |
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158 | pid_t ret; |
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159 | (void)context, (void)userdata; |
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160 | ret = fork(); |
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161 | if ( ret == -1 ) |
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162 | roar_err_from_errno(); |
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163 | return ret; |
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164 | #else |
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165 | roar_err_set(ROAR_ERROR_NOSYS); |
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166 | return (pid_t)-1; |
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167 | #endif |
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168 | } |
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169 | |
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170 | static const struct roar_libroar_forkapi _libroar_forkapi = { |
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171 | .prefork = NULL, |
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172 | .fork = _libroar_fork, |
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173 | .failed = NULL, |
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174 | .parent = NULL, |
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175 | .child = NULL, |
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176 | .userdata = NULL |
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177 | }; |
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178 | |
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179 | pid_t roar_fork(const struct roar_libroar_forkapi * api) { |
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180 | void * context = NULL; |
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181 | int err; |
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182 | pid_t ret; |
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183 | |
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184 | if ( api == NULL ) |
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185 | api = &_libroar_forkapi; |
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186 | |
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187 | if ( api->fork == NULL ) { |
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188 | roar_err_set(ROAR_ERROR_INVAL); |
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189 | return -1; |
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190 | } |
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191 | |
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192 | if ( api->prefork != NULL ) { |
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193 | if ( api->prefork(&context, api->userdata) != 0 ) { |
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194 | if ( api->failed != NULL ) |
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195 | api->failed(&context, api->userdata); |
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196 | |
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197 | if ( context != NULL ) { |
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198 | err = roar_error; |
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199 | roar_mm_free(context); |
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200 | roar_error = err; |
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201 | } |
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202 | return (pid_t)-1; |
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203 | } |
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204 | } |
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205 | |
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206 | if ( (ret = api->fork(&context, api->userdata)) == (pid_t)-1 ) { |
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207 | if ( api->failed != NULL ) |
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208 | api->failed(&context, api->userdata); |
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209 | |
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210 | if ( context != NULL ) { |
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211 | err = roar_error; |
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212 | roar_mm_free(context); |
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213 | roar_error = err; |
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214 | } |
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215 | return (pid_t)-1; |
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216 | } |
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217 | |
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218 | if ( ret == (pid_t)0 ) { |
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219 | if ( api->child != NULL ) |
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220 | api->child(&context, api->userdata); |
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221 | } else { |
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222 | if ( api->parent != NULL ) |
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223 | api->parent(&context, api->userdata, ret); |
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224 | } |
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225 | |
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226 | if ( context != NULL ) { |
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227 | err = roar_error; |
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228 | roar_mm_free(context); |
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229 | roar_error = err; |
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230 | } |
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231 | |
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232 | return ret; |
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233 | } |
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234 | |
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235 | int roar_reset(enum roar_reset what) { |
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236 | char c; |
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237 | int i; |
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238 | enum roar_reset subsets = ROAR_RESET_NONE; |
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239 | |
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240 | roar_err_set(ROAR_ERROR_NONE); |
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241 | |
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242 | switch (what) { |
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243 | case ROAR_RESET_NONE: |
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244 | return 0; |
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245 | break; |
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246 | case ROAR_RESET_UNKNOWN: |
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247 | case ROAR_RESET_EOL: |
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248 | roar_err_set(ROAR_ERROR_INVAL); |
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249 | return -1; |
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250 | break; |
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251 | case ROAR_RESET_ON_FORK: |
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252 | subsets |= ROAR_RESET_MEMORY|ROAR_RESET_RANDOMPOOL; |
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253 | break; |
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254 | case ROAR_RESET_ON_EXIT: |
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255 | case ROAR_RESET_ON_PRE_EXEC: |
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256 | subsets |= ROAR_RESET_MEMORY|ROAR_RESET_CONFIG; |
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257 | break; |
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258 | default: |
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259 | if ( what & 0x80 ) { |
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260 | subsets |= what; |
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261 | } else { |
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262 | roar_err_set(ROAR_ERROR_INVAL); |
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263 | return -1; |
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264 | } |
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265 | break; |
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266 | } |
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267 | |
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268 | // strip 0x80 so we can easly test on the other bit per subsystem. |
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269 | what |= 0x80; |
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270 | what -= 0x80; |
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271 | |
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272 | if ( what & ROAR_RESET_MEMORY ) { |
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273 | (void)roar_mm_reset(); |
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274 | } |
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275 | |
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276 | if ( what & ROAR_RESET_CONFIG ) { |
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277 | roar_libroar_reset_config(); |
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278 | } |
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279 | |
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280 | if ( what & ROAR_RESET_RANDOMPOOL ) { |
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281 | for (i = 0; i < 16; i++) { |
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282 | roar_random_gen_nonce(&c, 1); |
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283 | roar_random_uint16(); |
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284 | roar_random_uint32(); |
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285 | } |
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286 | } |
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287 | |
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288 | roar_err_set(ROAR_ERROR_NONE); |
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289 | return 0; |
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290 | } |
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291 | |
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292 | void roar_panic_real(enum roar_fatal_error error, const char * info, |
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293 | unsigned long int line, const char * file, const char * prefix, const char * func) { |
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294 | const char * errname = NULL; |
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295 | //#define ROAR_ERR(format, args...) roar_debug_msg(ROAR_DEBUG_TYPE_ERROR, __LINE__, __FILE__, ROAR_DBG_PREFIX, format, ## args) |
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296 | |
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297 | // we do not support info-text at the moment. |
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298 | (void)info; |
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299 | |
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300 | if ( func == NULL ) |
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301 | func = "<unknown>"; |
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302 | |
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303 | switch (error) { |
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304 | case ROAR_FATAL_ERROR_MEMORY_CORRUPTION_GUARD: |
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305 | roar_debug_msg(ROAR_DEBUG_TYPE_ERROR, line, file, prefix, "in %s() a guard segment memory corruption was detected. Backup your data and terminate this program. Report this lion to developer. Thanks.", func); |
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306 | return; |
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307 | break; |
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308 | case ROAR_FATAL_ERROR_UNKNOWN: |
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309 | errname = "<unknown error>"; |
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310 | break; |
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311 | case ROAR_FATAL_ERROR_MEMORY_CORRUPTION: |
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312 | errname = "Memory corruption"; |
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313 | break; |
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314 | case ROAR_FATAL_ERROR_CPU_FAILURE: |
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315 | errname = "CPU failure, replace hardware"; |
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316 | break; |
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317 | case ROAR_FATAL_ERROR_MEMORY_USED_AFTER_FREE: |
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318 | errname = "Memory used after free"; |
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319 | break; |
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320 | case ROAR_FATAL_ERROR_MEMORY_DOUBLE_FREE: |
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321 | errname = "Memory double freed"; |
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322 | break; |
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323 | default: |
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324 | errname = "<unknown error code, BAD>"; |
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325 | break; |
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326 | } |
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327 | |
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328 | roar_debug_msg(ROAR_DEBUG_TYPE_ERROR, line, file, prefix, "in %s() a _FATAL_ error of type \"%s\" was detected. Terminating program. Report this lion to developer. Thanks.", func, errname); |
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329 | |
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330 | #ifdef SIGKILL |
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331 | raise(SIGKILL); |
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332 | #endif |
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333 | abort(); |
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334 | |
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335 | while(1); |
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336 | } |
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337 | |
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338 | const char * roar_version_string(void) { |
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339 | return ROAR_VERSION_STRING; |
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340 | } |
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341 | |
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342 | uint32_t roar_version_num(void) { |
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343 | return _ROAR_MKVERSION(ROAR_VERSION_MAJOR, ROAR_VERSION_MINOR, ROAR_VERSION_REV); |
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344 | } |
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345 | |
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346 | //ll |
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