📄 hrtimer_8h-source.html
字号:
<!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++: hrtimer.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>hrtimer.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef CRYPTOPP_HRTIMER_H</span><a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_HRTIMER_H</span><a name="l00003"></a>00003 <span class="preprocessor"></span><a name="l00004"></a>00004 <span class="preprocessor">#include "config.h"</span><a name="l00005"></a>00005 <span class="preprocessor">#ifndef HIGHRES_TIMER_AVAILABLE</span><a name="l00006"></a>00006 <span class="preprocessor"></span><span class="preprocessor">#include <time.h></span><a name="l00007"></a>00007 <span class="preprocessor">#endif</span><a name="l00008"></a>00008 <span class="preprocessor"></span><a name="l00009"></a>00009 NAMESPACE_BEGIN(CryptoPP)<a name="l00010"></a>00010 <a name="l00011"></a>00011 <span class="preprocessor">#ifdef HIGHRES_TIMER_AVAILABLE</span><a name="l00012"></a>00012 <span class="preprocessor"></span><span class="preprocessor"> #ifdef WORD64_AVAILABLE</span><a name="l00013"></a>00013 <span class="preprocessor"></span> <span class="keyword">typedef</span> word64 TimerWord;<a name="l00014"></a>00014 <span class="preprocessor"> #else</span><a name="l00015"></a>00015 <span class="preprocessor"></span> <span class="keyword">typedef</span> word32 TimerWord;<a name="l00016"></a>00016 <span class="preprocessor"> #endif</span><a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor">#else</span><a name="l00018"></a>00018 <span class="preprocessor"></span> <span class="keyword">typedef</span> clock_t TimerWord;<a name="l00019"></a>00019 <span class="preprocessor">#endif</span><a name="l00020"></a>00020 <span class="preprocessor"></span><span class="comment"></span><a name="l00021"></a>00021 <span class="comment">//! _</span><a name="l00022"></a><a class="code" href="class_timer_base.html">00022</a> <span class="comment"></span><span class="keyword">class </span>CRYPTOPP_DLL CRYPTOPP_NO_VTABLE TimerBase<a name="l00023"></a>00023 {<a name="l00024"></a>00024 <span class="keyword">public</span>:<a name="l00025"></a><a class="code" href="class_timer_base.html#ce15d479a8bb76027f1f572010f62fb9">00025</a> <span class="keyword">enum</span> <a class="code" href="class_timer_base.html#ce15d479a8bb76027f1f572010f62fb9">Unit</a> {SECONDS = 0, MILLISECONDS, MICROSECONDS, NANOSECONDS};<a name="l00026"></a><a class="code" href="class_timer_base.html#436dfb7f82c64f3fe80657491579e1ef">00026</a> TimerBase(<a class="code" href="class_timer_base.html#ce15d479a8bb76027f1f572010f62fb9">Unit</a> unit, <span class="keywordtype">bool</span> stuckAtZero) : m_timerUnit(unit), m_stuckAtZero(stuckAtZero), m_started(false) {}<a name="l00027"></a>00027 <a name="l00028"></a>00028 <span class="keyword">virtual</span> TimerWord GetCurrentTimerValue() =0; <span class="comment">// GetCurrentTime is a macro in MSVC 6.0</span><a name="l00029"></a>00029 <span class="keyword">virtual</span> TimerWord TicksPerSecond() =0; <span class="comment">// this is not the resolution, just a conversion factor into seconds</span><a name="l00030"></a>00030 <a name="l00031"></a>00031 <span class="keywordtype">void</span> StartTimer();<a name="l00032"></a>00032 <span class="keywordtype">double</span> ElapsedTimeAsDouble();<a name="l00033"></a>00033 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> ElapsedTime();<a name="l00034"></a>00034 <a name="l00035"></a>00035 <span class="keyword">private</span>:<a name="l00036"></a>00036 <span class="keywordtype">double</span> ConvertTo(TimerWord t, Unit unit);<a name="l00037"></a>00037 <a name="l00038"></a>00038 Unit m_timerUnit; <span class="comment">// HPUX workaround: m_unit is a system macro on HPUX</span><a name="l00039"></a>00039 <span class="keywordtype">bool</span> m_stuckAtZero, m_started;<a name="l00040"></a>00040 TimerWord m_start, m_last;<a name="l00041"></a>00041 };<a name="l00042"></a>00042 <span class="comment"></span><a name="l00043"></a>00043 <span class="comment">//! measure CPU time spent executing instructions of this thread (if supported by OS)</span><a name="l00044"></a>00044 <span class="comment"></span><span class="comment">/*! /note This only works correctly on Windows NT or later. On Unix it reports process time, and others wall clock time.</span><a name="l00045"></a>00045 <span class="comment">*/</span><a name="l00046"></a><a class="code" href="class_thread_user_timer.html">00046</a> <span class="keyword">class </span><a class="code" href="class_thread_user_timer.html" title="measure CPU time spent executing instructions of this thread (if supported by OS)...">ThreadUserTimer</a> : <span class="keyword">public</span> TimerBase<a name="l00047"></a>00047 {<a name="l00048"></a>00048 <span class="keyword">public</span>:<a name="l00049"></a><a class="code" href="class_thread_user_timer.html#eed675d41692cf082fd5ebb4f4496f0b">00049</a> <a class="code" href="class_thread_user_timer.html#eed675d41692cf082fd5ebb4f4496f0b">ThreadUserTimer</a>(<a class="code" href="class_timer_base.html#ce15d479a8bb76027f1f572010f62fb9">Unit</a> unit = <a class="code" href="class_timer_base.html#ce15d479a8bb76027f1f572010f62fb9a8542adf2fdd9c433bade017e58b1999">TimerBase::SECONDS</a>, <span class="keywordtype">bool</span> stuckAtZero = <span class="keyword">false</span>) : TimerBase(unit, stuckAtZero) {}<a name="l00050"></a>00050 TimerWord <a class="code" href="class_thread_user_timer.html#91697dfcc4a2a2ed88ac18a3196dff71">GetCurrentTimerValue</a>();<a name="l00051"></a>00051 TimerWord <a class="code" href="class_thread_user_timer.html#e7fd32f847909e268eca39a91d07aab0">TicksPerSecond</a>();<a name="l00052"></a>00052 };<a name="l00053"></a>00053 <span class="comment"></span><a name="l00054"></a>00054 <span class="comment">//! high resolution timer</span><a name="l00055"></a><a class="code" href="class_timer.html">00055</a> <span class="comment"></span><span class="keyword">class </span>CRYPTOPP_DLL Timer : <span class="keyword">public</span> TimerBase<a name="l00056"></a>00056 {<a name="l00057"></a>00057 <span class="keyword">public</span>:<a name="l00058"></a><a class="code" href="class_timer.html#5dec7bff7a128405a16c5a04c477acb5">00058</a> Timer(<a class="code" href="class_timer_base.html#ce15d479a8bb76027f1f572010f62fb9">Unit</a> unit = <a class="code" href="class_timer_base.html#ce15d479a8bb76027f1f572010f62fb9a8542adf2fdd9c433bade017e58b1999">TimerBase::SECONDS</a>, <span class="keywordtype">bool</span> stuckAtZero = <span class="keyword">false</span>) : TimerBase(unit, stuckAtZero) {}<a name="l00059"></a>00059 TimerWord GetCurrentTimerValue();<a name="l00060"></a>00060 TimerWord TicksPerSecond();<a name="l00061"></a>00061 };<a name="l00062"></a>00062 <a name="l00063"></a>00063 NAMESPACE_END<a name="l00064"></a>00064 <a name="l00065"></a>00065 <span class="preprocessor">#endif</span></pre></div><hr size="1"><address style="text-align: right;"><small>Generated on Fri Jun 1 11:11:21 2007 for Crypto++ by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.2 </small></address></body></html>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -