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<h1>sdk/common/NvBlastTime.h</h1><a href="_nv_blast_time_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// This code contains NVIDIA Confidential Information and is disclosed to you</span>
<a name="l00002"></a>00002 <span class="comment">// under a form of NVIDIA software license agreement provided separately to you.</span>
<a name="l00003"></a>00003 <span class="comment">//</span>
<a name="l00004"></a>00004 <span class="comment">// Notice</span>
<a name="l00005"></a>00005 <span class="comment">// NVIDIA Corporation and its licensors retain all intellectual property and</span>
<a name="l00006"></a>00006 <span class="comment">// proprietary rights in and to this software and related documentation and</span>
<a name="l00007"></a>00007 <span class="comment">// any modifications thereto. Any use, reproduction, disclosure, or</span>
<a name="l00008"></a>00008 <span class="comment">// distribution of this software and related documentation without an express</span>
<a name="l00009"></a>00009 <span class="comment">// license agreement from NVIDIA Corporation is strictly prohibited.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES</span>
<a name="l00012"></a>00012 <span class="comment">// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO</span>
<a name="l00013"></a>00013 <span class="comment">// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,</span>
<a name="l00014"></a>00014 <span class="comment">// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.</span>
<a name="l00015"></a>00015 <span class="comment">//</span>
<a name="l00016"></a>00016 <span class="comment">// Information and code furnished is believed to be accurate and reliable.</span>
<a name="l00017"></a>00017 <span class="comment">// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such</span>
<a name="l00018"></a>00018 <span class="comment">// information or for any infringement of patents or other rights of third parties that may</span>
<a name="l00019"></a>00019 <span class="comment">// result from its use. No license is granted by implication or otherwise under any patent</span>
<a name="l00020"></a>00020 <span class="comment">// or patent rights of NVIDIA Corporation. Details are subject to change without notice.</span>
<a name="l00021"></a>00021 <span class="comment">// This code supersedes and replaces all information previously supplied.</span>
<a name="l00022"></a>00022 <span class="comment">// NVIDIA Corporation products are not authorized for use as critical</span>
<a name="l00023"></a>00023 <span class="comment">// components in life support devices or systems without express written approval of</span>
<a name="l00024"></a>00024 <span class="comment">// NVIDIA Corporation.</span>
<a name="l00025"></a>00025 <span class="comment">//</span>
<a name="l00026"></a>00026 <span class="comment">// Copyright (c) 2016-2020 NVIDIA Corporation. All rights reserved.</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#ifndef NVBLASTTIME_H</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#define NVBLASTTIME_H</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="_nv_blast_types_8h.html">NvBlastTypes.h</a>"</span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="keyword">namespace </span>Nv
<a name="l00036"></a>00036 {
<a name="l00037"></a>00037 <span class="keyword">namespace </span>Blast
<a name="l00038"></a>00038 {
<a name="l00039"></a>00039
<a name="l00040"></a><a class="code" href="class_nv_1_1_blast_1_1_time.html">00040</a> <span class="keyword">class </span><a class="code" href="class_nv_1_1_blast_1_1_time.html">Time</a>
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 <span class="keyword">public</span>:
<a name="l00043"></a><a class="code" href="class_nv_1_1_blast_1_1_time.html#101e7808be5a2daad0f2b0f9298dca2a">00043</a> <a class="code" href="class_nv_1_1_blast_1_1_time.html#101e7808be5a2daad0f2b0f9298dca2a">Time</a>() : m_lastTickCount(getTimeTicks()) {}
<a name="l00044"></a>00044
<a name="l00045"></a><a class="code" href="class_nv_1_1_blast_1_1_time.html#4f077e2652ca099569600e76a12501b6">00045</a> int64_t <a class="code" href="class_nv_1_1_blast_1_1_time.html#4f077e2652ca099569600e76a12501b6">getElapsedTicks</a>()
<a name="l00046"></a>00046 {
<a name="l00047"></a>00047 <span class="keyword">const</span> int64_t lastTickCount = m_lastTickCount;
<a name="l00048"></a>00048 m_lastTickCount = getTimeTicks();
<a name="l00049"></a>00049 <span class="keywordflow">return</span> m_lastTickCount - lastTickCount;
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a><a class="code" href="class_nv_1_1_blast_1_1_time.html#a2aed7f3170539c828f37928b19ec7e1">00052</a> int64_t <a class="code" href="class_nv_1_1_blast_1_1_time.html#a2aed7f3170539c828f37928b19ec7e1">peekElapsedTicks</a>()<span class="keyword"> const</span>
<a name="l00053"></a>00053 <span class="keyword"> </span>{
<a name="l00054"></a>00054 <span class="keywordflow">return</span> getTimeTicks() - m_lastTickCount;
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a><a class="code" href="class_nv_1_1_blast_1_1_time.html#f0937e761f072b8ffc84e4e83c6abd6f">00057</a> int64_t <a class="code" href="class_nv_1_1_blast_1_1_time.html#f0937e761f072b8ffc84e4e83c6abd6f">getLastTickCount</a>()<span class="keyword"> const</span>
<a name="l00058"></a>00058 <span class="keyword"> </span>{
<a name="l00059"></a>00059 <span class="keywordflow">return</span> m_lastTickCount;
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061
<a name="l00062"></a><a class="code" href="class_nv_1_1_blast_1_1_time.html#eced1fdeb83d4ce1ef759648577769d0">00062</a> <span class="keyword">static</span> <span class="keywordtype">double</span> <a class="code" href="class_nv_1_1_blast_1_1_time.html#eced1fdeb83d4ce1ef759648577769d0">seconds</a>(int64_t ticks)
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 <span class="keywordflow">return</span> s_secondsPerTick * ticks;
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="keyword">private</span>:
<a name="l00068"></a>00068 int64_t getTimeTicks() <span class="keyword">const</span>;
<a name="l00069"></a>00069 <span class="keyword">static</span> <span class="keywordtype">double</span> getTickDuration();
<a name="l00070"></a>00070
<a name="l00071"></a>00071 int64_t m_lastTickCount;
<a name="l00072"></a>00072 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> s_secondsPerTick;
<a name="l00073"></a>00073 };
<a name="l00074"></a>00074
<a name="l00075"></a>00075 } <span class="comment">// namespace Blast</span>
<a name="l00076"></a>00076 } <span class="comment">// namespace Nv</span>
<a name="l00077"></a>00077
<a name="l00078"></a>00078
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="preprocessor">#if NV_MICROSOFT_FAMILY</span>
<a name="l00082"></a>00082 <span class="preprocessor"></span>
<a name="l00083"></a>00083 <span class="preprocessor">#include "<a class="code" href="_nv_blast_include_windows_8h.html">NvBlastIncludeWindows.h</a>"</span>
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <a class="code" href="group__foundation.html#g36a01a4a51968418a26b06da7e1ad5d0">NV_INLINE</a> int64_t Nv::Blast::Time::getTimeTicks()<span class="keyword"> const</span>
<a name="l00086"></a>00086 <span class="keyword"></span>{
<a name="l00087"></a>00087 LARGE_INTEGER a;
<a name="l00088"></a>00088 QueryPerformanceCounter(&a);
<a name="l00089"></a>00089 <span class="keywordflow">return</span> a.QuadPart;
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <a class="code" href="group__foundation.html#g36a01a4a51968418a26b06da7e1ad5d0">NV_INLINE</a> <span class="keywordtype">double</span> Nv::Blast::Time::getTickDuration()
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094 LARGE_INTEGER a;
<a name="l00095"></a>00095 QueryPerformanceFrequency(&a);
<a name="l00096"></a>00096 <span class="keywordflow">return</span> 1.0 / (double)a.QuadPart;
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="preprocessor">#elif NV_UNIX_FAMILY</span>
<a name="l00100"></a>00100 <span class="preprocessor"></span>
<a name="l00101"></a>00101 <span class="preprocessor">#include <time.h></span>
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <a class="code" href="group__foundation.html#g36a01a4a51968418a26b06da7e1ad5d0">NV_INLINE</a> int64_t Nv::Blast::Time::getTimeTicks()<span class="keyword"> const</span>
<a name="l00104"></a>00104 <span class="keyword"></span>{
<a name="l00105"></a>00105 <span class="keyword">struct </span>timespec mCurrTimeInt;
<a name="l00106"></a>00106 clock_gettime(CLOCK_REALTIME, &mCurrTimeInt);
<a name="l00107"></a>00107 <span class="keywordflow">return</span> (static_cast<int64_t>(mCurrTimeInt.tv_sec) * 1000000000) + (<span class="keyword">static_cast<</span>int64_t<span class="keyword">></span>(mCurrTimeInt.tv_nsec));
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <a class="code" href="group__foundation.html#g36a01a4a51968418a26b06da7e1ad5d0">NV_INLINE</a> <span class="keywordtype">double</span> Nv::Blast::Time::getTickDuration()
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112 <span class="keywordflow">return</span> 1.e-9;
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="preprocessor">#elif NV_PS4</span>
<a name="l00116"></a>00116 <span class="preprocessor"></span>
<a name="l00117"></a>00117 <span class="preprocessor">#include "ps4/NvBlastTimePS4.h"</span>
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="preprocessor">#endif</span>
<a name="l00120"></a>00120 <span class="preprocessor"></span>
<a name="l00121"></a>00121 <span class="preprocessor">#endif // #ifndef NVBLASTTIME_H</span>
</pre></div></div>
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