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<h1>trdlocal.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// trdlocal.cpp - written and placed in the public domain by Wei Dai</span>
<a name="l00002"></a>00002 
<a name="l00003"></a>00003 <span class="preprocessor">#include &quot;pch.h&quot;</span>
<a name="l00004"></a>00004 
<a name="l00005"></a>00005 <span class="preprocessor">#ifndef CRYPTOPP_IMPORTS</span>
<a name="l00006"></a>00006 <span class="preprocessor"></span><span class="preprocessor">#ifdef THREADS_AVAILABLE</span>
<a name="l00007"></a>00007 <span class="preprocessor"></span>
<a name="l00008"></a>00008 <span class="preprocessor">#include &quot;trdlocal.h&quot;</span>
<a name="l00009"></a>00009 
<a name="l00010"></a>00010 <span class="preprocessor">#ifdef HAS_WINTHREADS</span>
<a name="l00011"></a>00011 <span class="preprocessor"></span><span class="preprocessor">#include &lt;windows.h&gt;</span>
<a name="l00012"></a>00012 <span class="preprocessor">#endif</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span>
<a name="l00014"></a>00014 NAMESPACE_BEGIN(CryptoPP)
<a name="l00015"></a>00015 
<a name="l00016"></a>00016 <a class="code" href="class_thread_local_storage.html" title="thread local storage">ThreadLocalStorage</a>::Err::Err(const std::<span class="keywordtype">string</span>&amp; operation, <span class="keywordtype">int</span> error)
<a name="l00017"></a>00017         : <a class="code" href="class_o_s___error.html" title="error reported by the operating system">OS_Error</a>(OTHER_ERROR, &quot;<a class="code" href="class_thread_local_storage.html" title="thread local storage">ThreadLocalStorage</a>: &quot; + operation + &quot; operation failed with error 0x&quot; + IntToString(error, 16), operation, error)
<a name="l00018"></a>00018 {
<a name="l00019"></a>00019 }
<a name="l00020"></a>00020 
<a name="l00021"></a>00021 ThreadLocalStorage::ThreadLocalStorage()
<a name="l00022"></a>00022 {
<a name="l00023"></a>00023 <span class="preprocessor">#ifdef HAS_WINTHREADS</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span>        m_index = TlsAlloc();
<a name="l00025"></a>00025         <span class="keywordflow">if</span> (m_index == TLS_OUT_OF_INDEXES)
<a name="l00026"></a>00026                 <span class="keywordflow">throw</span> Err(<span class="stringliteral">&quot;TlsAlloc&quot;</span>, GetLastError());
<a name="l00027"></a>00027 <span class="preprocessor">#else</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span>        <span class="keywordtype">int</span> error = pthread_key_create(&amp;m_index, NULL);
<a name="l00029"></a>00029         <span class="keywordflow">if</span> (error)
<a name="l00030"></a>00030                 <span class="keywordflow">throw</span> Err(<span class="stringliteral">&quot;pthread_key_create&quot;</span>, error);
<a name="l00031"></a>00031 <span class="preprocessor">#endif</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span>}
<a name="l00033"></a>00033 
<a name="l00034"></a>00034 ThreadLocalStorage::~ThreadLocalStorage()
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 <span class="preprocessor">#ifdef HAS_WINTHREADS</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span>        <span class="keywordflow">if</span> (!TlsFree(m_index))
<a name="l00038"></a>00038                 <span class="keywordflow">throw</span> Err(<span class="stringliteral">&quot;TlsFree&quot;</span>, GetLastError());
<a name="l00039"></a>00039 <span class="preprocessor">#else</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span>        <span class="keywordtype">int</span> error = pthread_key_delete(m_index);
<a name="l00041"></a>00041         <span class="keywordflow">if</span> (error)
<a name="l00042"></a>00042                 <span class="keywordflow">throw</span> Err(<span class="stringliteral">&quot;pthread_key_delete&quot;</span>, error);
<a name="l00043"></a>00043 <span class="preprocessor">#endif</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span>}
<a name="l00045"></a>00045 
<a name="l00046"></a>00046 <span class="keywordtype">void</span> ThreadLocalStorage::SetValue(<span class="keywordtype">void</span> *value)
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 <span class="preprocessor">#ifdef HAS_WINTHREADS</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span>        <span class="keywordflow">if</span> (!TlsSetValue(m_index, value))
<a name="l00050"></a>00050                 <span class="keywordflow">throw</span> Err(<span class="stringliteral">&quot;TlsSetValue&quot;</span>, GetLastError());
<a name="l00051"></a>00051 <span class="preprocessor">#else</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span>        <span class="keywordtype">int</span> error = pthread_setspecific(m_index, value);
<a name="l00053"></a>00053         <span class="keywordflow">if</span> (error)
<a name="l00054"></a>00054                 <span class="keywordflow">throw</span> Err(<span class="stringliteral">&quot;pthread_key_getspecific&quot;</span>, error);
<a name="l00055"></a>00055 <span class="preprocessor">#endif</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span>}
<a name="l00057"></a>00057 
<a name="l00058"></a>00058 <span class="keywordtype">void</span> *ThreadLocalStorage::GetValue()<span class="keyword"> const</span>
<a name="l00059"></a>00059 <span class="keyword"></span>{
<a name="l00060"></a>00060 <span class="preprocessor">#ifdef HAS_WINTHREADS</span>
<a name="l00061"></a>00061 <span class="preprocessor"></span>        <span class="keywordtype">void</span> *result = TlsGetValue(m_index);
<a name="l00062"></a>00062         <span class="keywordflow">if</span> (!result &amp;&amp; GetLastError() != NO_ERROR)
<a name="l00063"></a>00063                 <span class="keywordflow">throw</span> Err(<span class="stringliteral">&quot;TlsGetValue&quot;</span>, GetLastError());
<a name="l00064"></a>00064 <span class="preprocessor">#else</span>
<a name="l00065"></a>00065 <span class="preprocessor"></span>        <span class="keywordtype">void</span> *result = pthread_getspecific(m_index);
<a name="l00066"></a>00066 <span class="preprocessor">#endif</span>
<a name="l00067"></a>00067 <span class="preprocessor"></span>        <span class="keywordflow">return</span> result;
<a name="l00068"></a>00068 }
<a name="l00069"></a>00069 
<a name="l00070"></a>00070 NAMESPACE_END
<a name="l00071"></a>00071 
<a name="l00072"></a>00072 <span class="preprocessor">#endif  // #ifdef THREADS_AVAILABLE</span>
<a name="l00073"></a>00073 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
</pre></div></div>
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