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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><title>Crypto++: misc.h Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.5.2 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="classes.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="files.html"><span>File List</span></a></li> <li><a href="globals.html"><span>File Members</span></a></li> </ul></div><h1>misc.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef CRYPTOPP_MISC_H</span><a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_MISC_H</span><a name="l00003"></a>00003 <span class="preprocessor"></span><a name="l00004"></a>00004 <span class="preprocessor">#include "<a class="code" href="cryptlib_8h.html">cryptlib.h</a>"</span><a name="l00005"></a>00005 <span class="preprocessor">#include "smartptr.h"</span><a name="l00006"></a>00006 <a name="l00007"></a>00007 <span class="preprocessor">#ifdef _MSC_VER</span><a name="l00008"></a>00008 <span class="preprocessor"></span><span class="preprocessor"> #include <stdlib.h></span><a name="l00009"></a>00009 <span class="preprocessor"> #if _MSC_VER >= 1400</span><a name="l00010"></a>00010 <span class="preprocessor"></span> <span class="comment">// VC2005 workaround: disable declarations that conflict with winnt.h</span><a name="l00011"></a>00011 <span class="preprocessor"> #define _interlockedbittestandset CRYPTOPP_DISABLED_INTRINSIC_1</span><a name="l00012"></a>00012 <span class="preprocessor"></span><span class="preprocessor"> #define _interlockedbittestandreset CRYPTOPP_DISABLED_INTRINSIC_2</span><a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor"> #include <intrin.h></span><a name="l00014"></a>00014 <span class="preprocessor"> #undef _interlockedbittestandset</span><a name="l00015"></a>00015 <span class="preprocessor"></span><span class="preprocessor"> #undef _interlockedbittestandreset</span><a name="l00016"></a>00016 <span class="preprocessor"></span><span class="preprocessor"> #define CRYPTOPP_FAST_ROTATE(x) 1</span><a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor"> #elif _MSC_VER >= 1300</span><a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor"> #define CRYPTOPP_FAST_ROTATE(x) ((x) == 32 | (x) == 64)</span><a name="l00019"></a>00019 <span class="preprocessor"></span><span class="preprocessor"> #else</span><a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor"> #define CRYPTOPP_FAST_ROTATE(x) ((x) == 32)</span><a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor"> #endif</span><a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#elif (defined(__MWERKS__) && TARGET_CPU_PPC) || \</span><a name="l00023"></a>00023 <span class="preprocessor"> (defined(__GNUC__) && (defined(_ARCH_PWR2) || defined(_ARCH_PWR) || defined(_ARCH_PPC) || defined(_ARCH_PPC64) || defined(_ARCH_COM)))</span><a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor"> #define CRYPTOPP_FAST_ROTATE(x) ((x) == 32)</span><a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#elif defined(__GNUC__) && (CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X86) // depend on GCC's peephole optimization to generate rotate instructions</span><a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor"> #define CRYPTOPP_FAST_ROTATE(x) 1</span><a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#else</span><a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor"> #define CRYPTOPP_FAST_ROTATE(x) 0</span><a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#endif</span><a name="l00030"></a>00030 <span class="preprocessor"></span><a name="l00031"></a>00031 <span class="preprocessor">#ifdef __BORLANDC__</span><a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#include <mem.h></span><a name="l00033"></a>00033 <span class="preprocessor">#endif</span><a name="l00034"></a>00034 <span class="preprocessor"></span><a name="l00035"></a>00035 <span class="preprocessor">#if defined(__GNUC__) && defined(__linux__)</span><a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_BYTESWAP_AVAILABLE</span><a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor">#include <byteswap.h></span><a name="l00038"></a>00038 <span class="preprocessor">#endif</span><a name="l00039"></a>00039 <span class="preprocessor"></span><a name="l00040"></a>00040 NAMESPACE_BEGIN(CryptoPP)<a name="l00041"></a>00041 <a name="l00042"></a>00042 <span class="comment">// ************** compile-time assertion ***************</span><a name="l00043"></a>00043 <a name="l00044"></a>00044 template <<span class="keywordtype">bool</span> b><a name="l00045"></a><a class="code" href="struct_compile_assert.html">00045</a> struct <a class="code" href="struct_compile_assert.html">CompileAssert</a><a name="l00046"></a>00046 {<a name="l00047"></a><a class="code" href="struct_compile_assert.html#3def7fe0ca9d70767176ffb275bf923a">00047</a> <span class="keyword">static</span> <span class="keywordtype">char</span> dummy[2*b-1];<a name="l00048"></a>00048 };<a name="l00049"></a>00049 <a name="l00050"></a>00050 <span class="preprocessor">#define CRYPTOPP_COMPILE_ASSERT(assertion) CRYPTOPP_COMPILE_ASSERT_INSTANCE(assertion, __LINE__)</span><a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor">#if defined(CRYPTOPP_EXPORTS) || defined(CRYPTOPP_IMPORTS)</span><a name="l00052"></a>00052 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_COMPILE_ASSERT_INSTANCE(assertion, instance)</span><a name="l00053"></a>00053 <span class="preprocessor"></span><span class="preprocessor">#else</span><a name="l00054"></a>00054 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_COMPILE_ASSERT_INSTANCE(assertion, instance) static CompileAssert<(assertion)> CRYPTOPP_ASSERT_JOIN(cryptopp_assert_, instance)</span><a name="l00055"></a>00055 <span class="preprocessor"></span><span class="preprocessor">#endif</span><a name="l00056"></a>00056 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_ASSERT_JOIN(X, Y) CRYPTOPP_DO_ASSERT_JOIN(X, Y)</span><a name="l00057"></a>00057 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_DO_ASSERT_JOIN(X, Y) X##Y</span><a name="l00058"></a>00058 <span class="preprocessor"></span><a name="l00059"></a>00059 <span class="comment">// ************** misc classes ***************</span><a name="l00060"></a>00060 <a name="l00061"></a><a class="code" href="class_empty.html">00061</a> <span class="keyword">class </span>CRYPTOPP_DLL <a class="code" href="class_empty.html">Empty</a><a name="l00062"></a>00062 {<a name="l00063"></a>00063 };<a name="l00064"></a>00064 <span class="comment"></span><a name="l00065"></a>00065 <span class="comment">//! _</span><a name="l00066"></a>00066 <span class="comment"></span><span class="keyword">template</span> <<span class="keyword">class</span> BASE1, <span class="keyword">class</span> BASE2><a name="l00067"></a><a class="code" href="class_two_bases.html">00067</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_two_bases.html" title="_">TwoBases</a> : <span class="keyword">public</span> BASE1, <span class="keyword">public</span> BASE2<a name="l00068"></a>00068 {<a name="l00069"></a>00069 };<a name="l00070"></a>00070 <span class="comment"></span><a name="l00071"></a>00071 <span class="comment">//! _</span><a name="l00072"></a>00072 <span class="comment"></span><span class="keyword">template</span> <<span class="keyword">class</span> BASE1, <span class="keyword">class</span> BASE2, <span class="keyword">class</span> BASE3><a name="l00073"></a><a class="code" href="class_three_bases.html">00073</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE ThreeBases : <span class="keyword">public</span> BASE1, <span class="keyword">public</span> BASE2, <span class="keyword">public</span> BASE3<a name="l00074"></a>00074 {<a name="l00075"></a>00075 };<a name="l00076"></a>00076 <a name="l00077"></a>00077 <span class="keyword">template</span> <<span class="keyword">class</span> T><a name="l00078"></a><a class="code" href="class_object_holder.html">00078</a> <span class="keyword">class </span><a class="code" href="class_object_holder.html">ObjectHolder</a><a name="l00079"></a>00079 {<a name="l00080"></a>00080 <span class="keyword">protected</span>:<a name="l00081"></a><a class="code" href="class_object_holder.html#154db246b0eb9b9fd2c406b828d31c98">00081</a> T <a class="code" href="class_object_holder.html#154db246b0eb9b9fd2c406b828d31c98">m_object</a>;<a name="l00082"></a>00082 };<a name="l00083"></a>00083 <a name="l00084"></a><a class="code" href="class_not_copyable.html">00084</a> <span class="keyword">class </span><a class="code" href="class_not_copyable.html">NotCopyable</a><a name="l00085"></a>00085 {<a name="l00086"></a>00086 <span class="keyword">public</span>:<a name="l00087"></a><a class="code" href="class_not_copyable.html#87c521041c0abcb674e5a86cf80b166a">00087</a> <a class="code" href="class_not_copyable.html#87c521041c0abcb674e5a86cf80b166a">NotCopyable</a>() {}<a name="l00088"></a>00088 <span class="keyword">private</span>:<a name="l00089"></a>00089 <a class="code" href="class_not_copyable.html#87c521041c0abcb674e5a86cf80b166a">NotCopyable</a>(<span class="keyword">const</span> <a class="code" href="class_not_copyable.html">NotCopyable</a> &);<a name="l00090"></a>00090 <span class="keywordtype">void</span> operator=(<span class="keyword">const</span> <a class="code" href="class_not_copyable.html">NotCopyable</a> &);<a name="l00091"></a>00091 };<a name="l00092"></a>00092 <a name="l00093"></a>00093 <span class="keyword">template</span> <<span class="keyword">class</span> T><a name="l00094"></a><a class="code" href="struct_new_object.html">00094</a> <span class="keyword">struct </span><a class="code" href="struct_new_object.html">NewObject</a><a name="l00095"></a>00095 {<a name="l00096"></a><a class="code" href="struct_new_object.html#458e0941367fe3dd120f8833adea85fa">00096</a> T* <a class="code" href="struct_new_object.html#458e0941367fe3dd120f8833adea85fa">operator()</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> <span class="keyword">new</span> T;}<a name="l00097"></a>00097 };<a name="l00098"></a>00098 <span class="comment"></span><a name="l00099"></a>00099 <span class="comment">/*! This function safely initializes a static object in a multithreaded environment without using locks.</span><a name="l00100"></a>00100 <span class="comment"> It may leak memory when two threads try to initialize the static object at the same time</span><a name="l00101"></a>00101 <span class="comment"> but this should be acceptable since each static object is only initialized once per session.</span><a name="l00102"></a>00102 <span class="comment">*/</span><a name="l00103"></a>00103 <span class="keyword">template</span> <<span class="keyword">class</span> T, <span class="keyword">class</span> F = NewObject<T>, <span class="keywordtype">int</span> instance=0><a name="l00104"></a><a class="code" href="class_singleton.html">00104</a> <span class="keyword">class </span><a class="code" href="class_singleton.html">Singleton</a><a name="l00105"></a>00105 {<a name="l00106"></a>00106 <span class="keyword">public</span>:<a name="l00107"></a><a class="code" href="class_singleton.html#864479413a63f1752a16981a4819a123">00107</a> <a class="code" href="class_singleton.html#864479413a63f1752a16981a4819a123">Singleton</a>(F objectFactory = F()) : m_objectFactory(objectFactory) {}<a name="l00108"></a>00108 <a name="l00109"></a>00109 <span class="comment">// prevent this function from being inlined</span><a name="l00110"></a>00110 CRYPTOPP_NOINLINE <span class="keyword">const</span> T & <a class="code" href="class_singleton.html#b7f2a97041b5939110c5bde9cfd41161">Ref</a>(CRYPTOPP_NOINLINE_DOTDOTDOT) <span class="keyword">const</span>;<a name="l00111"></a>00111 <a name="l00112"></a>00112 <span class="keyword">private</span>:<a name="l00113"></a>00113 F m_objectFactory;<a name="l00114"></a>00114 };<a name="l00115"></a>00115 <a name="l00116"></a>00116 <span class="keyword">template</span> <<span class="keyword">class</span> T, <span class="keyword">class</span> F, <span class="keywordtype">int</span> instance><a name="l00117"></a><a class="code" href="class_singleton.html#b7f2a97041b5939110c5bde9cfd41161">00117</a> <span class="keyword">const</span> T & <a class="code" href="class_singleton.html#b7f2a97041b5939110c5bde9cfd41161">Singleton<T, F, instance>::Ref</a>(CRYPTOPP_NOINLINE_DOTDOTDOT)<span class="keyword"> const</span><a name="l00118"></a>00118 <span class="keyword"></span>{<a name="l00119"></a>00119 <span class="keyword">static</span> <a class="code" href="classsimple__ptr.html">simple_ptr<T></a> s_pObject;<a name="l00120"></a>00120 <span class="keyword">static</span> <span class="keywordtype">char</span> s_objectState = 0;<a name="l00121"></a>00121 <a name="l00122"></a>00122 retry:⌨️ 快捷键说明
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