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libstdc++-docs-4.6.3-2.fc15.i686.rpm

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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* Threads compatibility routines for libgcc2 and libobjc.  */</span>
<a name="l00002"></a>00002 <span class="comment">/* Compile this one with gcc.  */</span>
<a name="l00003"></a>00003 <span class="comment">/* Copyright (C) 1997, 1999, 2000, 2004, 2008, 2009</span>
<a name="l00004"></a>00004 <span class="comment">   Free Software Foundation, Inc.</span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment">This file is part of GCC.</span>
<a name="l00007"></a>00007 <span class="comment"></span>
<a name="l00008"></a>00008 <span class="comment">GCC is free software; you can redistribute it and/or modify it under</span>
<a name="l00009"></a>00009 <span class="comment">the terms of the GNU General Public License as published by the Free</span>
<a name="l00010"></a>00010 <span class="comment">Software Foundation; either version 3, or (at your option) any later</span>
<a name="l00011"></a>00011 <span class="comment">version.</span>
<a name="l00012"></a>00012 <span class="comment"></span>
<a name="l00013"></a>00013 <span class="comment">GCC is distributed in the hope that it will be useful, but WITHOUT ANY</span>
<a name="l00014"></a>00014 <span class="comment">WARRANTY; without even the implied warranty of MERCHANTABILITY or</span>
<a name="l00015"></a>00015 <span class="comment">FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License</span>
<a name="l00016"></a>00016 <span class="comment">for more details.</span>
<a name="l00017"></a>00017 <span class="comment"></span>
<a name="l00018"></a>00018 <span class="comment">Under Section 7 of GPL version 3, you are granted additional</span>
<a name="l00019"></a>00019 <span class="comment">permissions described in the GCC Runtime Library Exception, version</span>
<a name="l00020"></a>00020 <span class="comment">3.1, as published by the Free Software Foundation.</span>
<a name="l00021"></a>00021 <span class="comment"></span>
<a name="l00022"></a>00022 <span class="comment">You should have received a copy of the GNU General Public License and</span>
<a name="l00023"></a>00023 <span class="comment">a copy of the GCC Runtime Library Exception along with this program;</span>
<a name="l00024"></a>00024 <span class="comment">see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see</span>
<a name="l00025"></a>00025 <span class="comment">&lt;http://www.gnu.org/licenses/&gt;.  */</span>
<a name="l00026"></a>00026 
<a name="l00027"></a>00027 <span class="preprocessor">#ifndef _GLIBCXX_GCC_GTHR_SINGLE_H</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#define _GLIBCXX_GCC_GTHR_SINGLE_H</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span>
<a name="l00030"></a>00030 <span class="comment">/* Just provide compatibility for mutex handling.  */</span>
<a name="l00031"></a>00031 
<a name="l00032"></a>00032 <span class="keyword">typedef</span> <span class="keywordtype">int</span> __gthread_key_t;
<a name="l00033"></a>00033 <span class="keyword">typedef</span> <span class="keywordtype">int</span> __gthread_once_t;
<a name="l00034"></a>00034 <span class="keyword">typedef</span> <span class="keywordtype">int</span> __gthread_mutex_t;
<a name="l00035"></a>00035 <span class="keyword">typedef</span> <span class="keywordtype">int</span> __gthread_recursive_mutex_t;
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 <span class="preprocessor">#define __GTHREAD_ONCE_INIT 0</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define __GTHREAD_MUTEX_INIT 0</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor">#define __GTHREAD_RECURSIVE_MUTEX_INIT 0</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span>
<a name="l00041"></a>00041 <span class="preprocessor">#define _GLIBCXX_UNUSED __attribute__((unused))</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span>
<a name="l00043"></a>00043 <span class="preprocessor">#ifdef _LIBOBJC</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span>
<a name="l00045"></a>00045 <span class="comment">/* Thread local storage for a single thread */</span>
<a name="l00046"></a>00046 <span class="keyword">static</span> <span class="keywordtype">void</span> *thread_local_storage = NULL;
<a name="l00047"></a>00047 
<a name="l00048"></a>00048 <span class="comment">/* Backend initialization functions */</span>
<a name="l00049"></a>00049 
<a name="l00050"></a>00050 <span class="comment">/* Initialize the threads subsystem.  */</span>
<a name="l00051"></a>00051 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00052"></a>00052 __gthread_objc_init_thread_system (<span class="keywordtype">void</span>)
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054   <span class="comment">/* No thread support available */</span>
<a name="l00055"></a>00055   <span class="keywordflow">return</span> -1;
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057 
<a name="l00058"></a>00058 <span class="comment">/* Close the threads subsystem.  */</span>
<a name="l00059"></a>00059 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00060"></a>00060 __gthread_objc_close_thread_system (<span class="keywordtype">void</span>)
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062   <span class="comment">/* No thread support available */</span>
<a name="l00063"></a>00063   <span class="keywordflow">return</span> -1;
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065 
<a name="l00066"></a>00066 <span class="comment">/* Backend thread functions */</span>
<a name="l00067"></a>00067 
<a name="l00068"></a>00068 <span class="comment">/* Create a new thread of execution.  */</span>
<a name="l00069"></a>00069 <span class="keyword">static</span> <span class="keyword">inline</span> objc_thread_t
<a name="l00070"></a>00070 __gthread_objc_thread_detach (<span class="keywordtype">void</span> (* func)(<span class="keywordtype">void</span> *), <span class="keywordtype">void</span> * <a class="code" href="a01166.html#gabc043a433d81c9dbe73668c5fd0362fe" title="Return phase angle of z.">arg</a> _GLIBCXX_UNUSED)
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072   <span class="comment">/* No thread support available */</span>
<a name="l00073"></a>00073   <span class="keywordflow">return</span> NULL;
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075 
<a name="l00076"></a>00076 <span class="comment">/* Set the current thread&#39;s priority.  */</span>
<a name="l00077"></a>00077 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00078"></a>00078 __gthread_objc_thread_set_priority (<span class="keywordtype">int</span> priority _GLIBCXX_UNUSED)
<a name="l00079"></a>00079 {
<a name="l00080"></a>00080   <span class="comment">/* No thread support available */</span>
<a name="l00081"></a>00081   <span class="keywordflow">return</span> -1;
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083 
<a name="l00084"></a>00084 <span class="comment">/* Return the current thread&#39;s priority.  */</span>
<a name="l00085"></a>00085 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00086"></a>00086 __gthread_objc_thread_get_priority (<span class="keywordtype">void</span>)
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088   <span class="keywordflow">return</span> OBJC_THREAD_INTERACTIVE_PRIORITY;
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090 
<a name="l00091"></a>00091 <span class="comment">/* Yield our process time to another thread.  */</span>
<a name="l00092"></a>00092 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span>
<a name="l00093"></a>00093 __gthread_objc_thread_yield (<span class="keywordtype">void</span>)
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095   <span class="keywordflow">return</span>;
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097 
<a name="l00098"></a>00098 <span class="comment">/* Terminate the current thread.  */</span>
<a name="l00099"></a>00099 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00100"></a>00100 __gthread_objc_thread_exit (<span class="keywordtype">void</span>)
<a name="l00101"></a>00101 {
<a name="l00102"></a>00102   <span class="comment">/* No thread support available */</span>
<a name="l00103"></a>00103   <span class="comment">/* Should we really exit the program */</span>
<a name="l00104"></a>00104   <span class="comment">/* exit (&amp;__objc_thread_exit_status); */</span>
<a name="l00105"></a>00105   <span class="keywordflow">return</span> -1;
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107 
<a name="l00108"></a>00108 <span class="comment">/* Returns an integer value which uniquely describes a thread.  */</span>
<a name="l00109"></a>00109 <span class="keyword">static</span> <span class="keyword">inline</span> objc_thread_t
<a name="l00110"></a>00110 __gthread_objc_thread_id (<span class="keywordtype">void</span>)
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112   <span class="comment">/* No thread support, use 1.  */</span>
<a name="l00113"></a>00113   <span class="keywordflow">return</span> (objc_thread_t) 1;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115 
<a name="l00116"></a>00116 <span class="comment">/* Sets the thread&#39;s local storage pointer.  */</span>
<a name="l00117"></a>00117 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00118"></a>00118 __gthread_objc_thread_set_data (<span class="keywordtype">void</span> *value)
<a name="l00119"></a>00119 {
<a name="l00120"></a>00120   thread_local_storage = value;
<a name="l00121"></a>00121   <span class="keywordflow">return</span> 0;
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123 
<a name="l00124"></a>00124 <span class="comment">/* Returns the thread&#39;s local storage pointer.  */</span>
<a name="l00125"></a>00125 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> *
<a name="l00126"></a>00126 __gthread_objc_thread_get_data (<span class="keywordtype">void</span>)
<a name="l00127"></a>00127 {
<a name="l00128"></a>00128   <span class="keywordflow">return</span> thread_local_storage;
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130 
<a name="l00131"></a>00131 <span class="comment">/* Backend mutex functions */</span>
<a name="l00132"></a>00132 
<a name="l00133"></a>00133 <span class="comment">/* Allocate a mutex.  */</span>
<a name="l00134"></a>00134 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00135"></a>00135 __gthread_objc_mutex_allocate (objc_mutex_t mutex _GLIBCXX_UNUSED)
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137   <span class="keywordflow">return</span> 0;
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139 
<a name="l00140"></a>00140 <span class="comment">/* Deallocate a mutex.  */</span>
<a name="l00141"></a>00141 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00142"></a>00142 __gthread_objc_mutex_deallocate (objc_mutex_t mutex _GLIBCXX_UNUSED)
<a name="l00143"></a>00143 {
<a name="l00144"></a>00144   <span class="keywordflow">return</span> 0;
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146 
<a name="l00147"></a>00147 <span class="comment">/* Grab a lock on a mutex.  */</span>
<a name="l00148"></a>00148 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00149"></a>00149 __gthread_objc_mutex_lock (objc_mutex_t mutex _GLIBCXX_UNUSED)
<a name="l00150"></a>00150 {
<a name="l00151"></a>00151   <span class="comment">/* There can only be one thread, so we always get the lock */</span>
<a name="l00152"></a>00152   <span class="keywordflow">return</span> 0;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 
<a name="l00155"></a>00155 <span class="comment">/* Try to grab a lock on a mutex.  */</span>
<a name="l00156"></a>00156 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00157"></a>00157 __gthread_objc_mutex_trylock (objc_mutex_t mutex _GLIBCXX_UNUSED)
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159   <span class="comment">/* There can only be one thread, so we always get the lock */</span>
<a name="l00160"></a>00160   <span class="keywordflow">return</span> 0;
<a name="l00161"></a>00161 }
<a name="l00162"></a>00162 
<a name="l00163"></a>00163 <span class="comment">/* Unlock the mutex */</span>
<a name="l00164"></a>00164 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00165"></a>00165 __gthread_objc_mutex_unlock (objc_mutex_t mutex _GLIBCXX_UNUSED)
<a name="l00166"></a>00166 {
<a name="l00167"></a>00167   <span class="keywordflow">return</span> 0;
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169 
<a name="l00170"></a>00170 <span class="comment">/* Backend condition mutex functions */</span>
<a name="l00171"></a>00171 
<a name="l00172"></a>00172 <span class="comment">/* Allocate a condition.  */</span>
<a name="l00173"></a>00173 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00174"></a>00174 __gthread_objc_condition_allocate (objc_condition_t condition _GLIBCXX_UNUSED)
<a name="l00175"></a>00175 {
<a name="l00176"></a>00176   <span class="keywordflow">return</span> 0;
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178 
<a name="l00179"></a>00179 <span class="comment">/* Deallocate a condition.  */</span>
<a name="l00180"></a>00180 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00181"></a>00181 __gthread_objc_condition_deallocate (objc_condition_t condition _GLIBCXX_UNUSED)
<a name="l00182"></a>00182 {
<a name="l00183"></a>00183   <span class="keywordflow">return</span> 0;
<a name="l00184"></a>00184 }
<a name="l00185"></a>00185 
<a name="l00186"></a>00186 <span class="comment">/* Wait on the condition */</span>
<a name="l00187"></a>00187 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00188"></a>00188 __gthread_objc_condition_wait (objc_condition_t condition _GLIBCXX_UNUSED,
<a name="l00189"></a>00189                    objc_mutex_t mutex _GLIBCXX_UNUSED)
<a name="l00190"></a>00190 {
<a name="l00191"></a>00191   <span class="keywordflow">return</span> 0;
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193 
<a name="l00194"></a>00194 <span class="comment">/* Wake up all threads waiting on this condition.  */</span>
<a name="l00195"></a>00195 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00196"></a>00196 __gthread_objc_condition_broadcast (objc_condition_t condition _GLIBCXX_UNUSED)
<a name="l00197"></a>00197 {
<a name="l00198"></a>00198   <span class="keywordflow">return</span> 0;
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200 
<a name="l00201"></a>00201 <span class="comment">/* Wake up one thread waiting on this condition.  */</span>
<a name="l00202"></a>00202 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00203"></a>00203 __gthread_objc_condition_signal (objc_condition_t condition _GLIBCXX_UNUSED)
<a name="l00204"></a>00204 {
<a name="l00205"></a>00205   <span class="keywordflow">return</span> 0;
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207 
<a name="l00208"></a>00208 <span class="preprocessor">#else </span><span class="comment">/* _LIBOBJC */</span>
<a name="l00209"></a>00209 
<a name="l00210"></a>00210 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00211"></a>00211 __gthread_active_p (<span class="keywordtype">void</span>)
<a name="l00212"></a>00212 {
<a name="l00213"></a>00213   <span class="keywordflow">return</span> 0;
<a name="l00214"></a>00214 }
<a name="l00215"></a>00215 
<a name="l00216"></a>00216 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00217"></a>00217 __gthread_once (__gthread_once_t *__once _GLIBCXX_UNUSED, <span class="keywordtype">void</span> (*__func) (<span class="keywordtype">void</span>) _GLIBCXX_UNUSED)
<a name="l00218"></a>00218 {
<a name="l00219"></a>00219   <span class="keywordflow">return</span> 0;
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221 
<a name="l00222"></a>00222 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span> _GLIBCXX_UNUSED
<a name="l00223"></a>00223 __gthread_key_create (__gthread_key_t *__key _GLIBCXX_UNUSED, <span class="keywordtype">void</span> (*__func) (<span class="keywordtype">void</span> *) _GLIBCXX_UNUSED)
<a name="l00224"></a>00224 {
<a name="l00225"></a>00225   <span class="keywordflow">return</span> 0;
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227 
<a name="l00228"></a>00228 <span class="keyword">static</span> <span class="keywordtype">int</span> _GLIBCXX_UNUSED
<a name="l00229"></a>00229 __gthread_key_delete (__gthread_key_t __key _GLIBCXX_UNUSED)
<a name="l00230"></a>00230 {
<a name="l00231"></a>00231   <span class="keywordflow">return</span> 0;
<a name="l00232"></a>00232 }
<a name="l00233"></a>00233 
<a name="l00234"></a>00234 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> *
<a name="l00235"></a>00235 __gthread_getspecific (__gthread_key_t __key _GLIBCXX_UNUSED)
<a name="l00236"></a>00236 {
<a name="l00237"></a>00237   <span class="keywordflow">return</span> 0;
<a name="l00238"></a>00238 }
<a name="l00239"></a>00239 
<a name="l00240"></a>00240 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00241"></a>00241 __gthread_setspecific (__gthread_key_t __key _GLIBCXX_UNUSED, <span class="keyword">const</span> <span class="keywordtype">void</span> *__v _GLIBCXX_UNUSED)
<a name="l00242"></a>00242 {
<a name="l00243"></a>00243   <span class="keywordflow">return</span> 0;
<a name="l00244"></a>00244 }
<a name="l00245"></a>00245 
<a name="l00246"></a>00246 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00247"></a>00247 __gthread_mutex_destroy (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
<a name="l00248"></a>00248 {
<a name="l00249"></a>00249   <span class="keywordflow">return</span> 0;
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251 
<a name="l00252"></a>00252 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00253"></a>00253 __gthread_mutex_lock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
<a name="l00254"></a>00254 {
<a name="l00255"></a>00255   <span class="keywordflow">return</span> 0;
<a name="l00256"></a>00256 }
<a name="l00257"></a>00257 
<a name="l00258"></a>00258 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00259"></a>00259 __gthread_mutex_trylock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
<a name="l00260"></a>00260 {
<a name="l00261"></a>00261   <span class="keywordflow">return</span> 0;
<a name="l00262"></a>00262 }
<a name="l00263"></a>00263 
<a name="l00264"></a>00264 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00265"></a>00265 __gthread_mutex_unlock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
<a name="l00266"></a>00266 {
<a name="l00267"></a>00267   <span class="keywordflow">return</span> 0;
<a name="l00268"></a>00268 }
<a name="l00269"></a>00269 
<a name="l00270"></a>00270 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00271"></a>00271 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
<a name="l00272"></a>00272 {
<a name="l00273"></a>00273   <span class="keywordflow">return</span> __gthread_mutex_lock (__mutex);
<a name="l00274"></a>00274 }
<a name="l00275"></a>00275 
<a name="l00276"></a>00276 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00277"></a>00277 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
<a name="l00278"></a>00278 {
<a name="l00279"></a>00279   <span class="keywordflow">return</span> __gthread_mutex_trylock (__mutex);
<a name="l00280"></a>00280 }
<a name="l00281"></a>00281 
<a name="l00282"></a>00282 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span>
<a name="l00283"></a>00283 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
<a name="l00284"></a>00284 {
<a name="l00285"></a>00285   <span class="keywordflow">return</span> __gthread_mutex_unlock (__mutex);
<a name="l00286"></a>00286 }
<a name="l00287"></a>00287 
<a name="l00288"></a>00288 <span class="preprocessor">#endif </span><span class="comment">/* _LIBOBJC */</span>
<a name="l00289"></a>00289 
<a name="l00290"></a>00290 <span class="preprocessor">#undef _GLIBCXX_UNUSED</span>
<a name="l00291"></a>00291 <span class="preprocessor"></span>
<a name="l00292"></a>00292 <span class="preprocessor">#endif </span><span class="comment">/* ! _GLIBCXX_GCC_GTHR_SINGLE_H */</span>
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