Glenn Fiedler や DeWitter など、さまざまなゲーム タイミング ループ メソッドを調べてきました。私自身の C++ 知識の制限により、重要な領域を理解するのが難しいことがわかりました。これで、私は自分の方法を実装しようと試み始めました....私はこれらの方法について何かを理解しようとする良い方法を考えました。
[編集 1: コンパイラとして minGW-w64 (x64-4.8.1-posix-seh-rev5) で CodeBlocks IDE を使用しています]
[edit2: 3 番目のタイマー、QueryPerformanceCounter を含めるように修正されたコードと出力ウィンドウ]
これを達成しようとして、次の問題に遭遇しました。
最小限のコード:
#include <chrono>
#include <iostream>
#include <windows.h>
#include <stdio.h>
using namespace std;
using namespace chrono;
LARGE_INTEGER startqpc, stopqpc, li;
double PCFreq = 0.0;
void print()
{
for (int p=0; p<1000000; ) p += 1; //adjust till ms (steady) returns 1-2ms
}
int main()
{
for(int x=0; x<200; x += 1)
{
steady_clock::time_point start = steady_clock::now();
auto timePoint1 = chrono::high_resolution_clock::now();
if(!QueryPerformanceFrequency(&li))
cout << "QueryPerformanceFrequency failed!\n";
PCFreq = double(li.QuadPart)/1000.0;
QueryPerformanceCounter(&startqpc);
print();
steady_clock::time_point finish = steady_clock::now();
auto timePoint2 = chrono::high_resolution_clock::now();
QueryPerformanceCounter(&stopqpc);
auto elapsedTime(timePoint2 - timePoint1);
double diff = (stopqpc.QuadPart - startqpc.QuadPart)/PCFreq;
cout << "Elapsed time: "
<< duration_cast<milliseconds>(finish - start).count() << "ms (steady) "
<< chrono::duration_cast<chrono::duration<float, milli >> (elapsedTime).count() << "ms (hires) "
<< diff << " (qpc) \n";
}
}
比較のために、上記のコードでは 2 つのタイマーを使用しています。
私のPCでは、これからの出力は次のとおりです。
Elapsed time: 1ms (steady) 0ms (hires) 1.8429 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.8429 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.85152 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 15.6001ms (hires) 1.85557 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.59283 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.25573 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.85072 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84263 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84263 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.85422 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84263 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84263 (qpc)
Elapsed time: 1ms (steady) 15.6001ms (hires) 1.85099 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.31582 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.84964 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.52466 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 2ms (steady) 15.6ms (hires) 2.25169 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84263 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.26974 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84991 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84667 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.89518 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.87874 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.92213 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.87605 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84263 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.03126 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.87659 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.88467 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.24899 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.30316 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.23579 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93263 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.23552 (qpc)
Elapsed time: 2ms (steady) 15.6ms (hires) 2.42118 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.24522 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.23471 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.23848 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93425 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.9329 (qpc)
Elapsed time: 1ms (steady) 15.6001ms (hires) 1.85126 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.35355 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.23687 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.23633 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.2374 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.23498 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.85449 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.0097 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.15441 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93263 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93425 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.23579 (qpc)
Elapsed time: 2ms (steady) 15.6ms (hires) 2.04554 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.1121 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.01779 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.07222 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.9329 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93425 (qpc)
Elapsed time: 1ms (steady) 15.6001ms (hires) 1.95015 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.95177 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84587 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84533 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.85233 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.88278 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84667 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84533 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.88629 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.8456 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.8588 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.06225 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.23633 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93317 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.06009 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84533 (qpc)
Elapsed time: 1ms (steady) 15.6001ms (hires) 1.86284 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93425 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.02803 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.26839 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93398 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.93641 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93371 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93344 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.9329 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.02345 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.08731 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.9356 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93398 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.09 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93371 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.03072 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.19213 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.85287 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.9321 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93344 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93317 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93344 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93263 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.42711 (qpc)
Elapsed time: 1ms (steady) 15.6001ms (hires) 1.9418 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.9356 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.08947 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.9329 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93614 (qpc)
Elapsed time: 2ms (steady) 15.6ms (hires) 2.27702 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93614 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93317 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.08974 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.92698 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93317 (qpc)
Elapsed time: 2ms (steady) 15.6ms (hires) 2.09054 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.96066 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.96093 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.8456 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.8456 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.8456 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84533 (qpc)
Elapsed time: 1ms (steady) 15.6001ms (hires) 1.91835 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.8456 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84587 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.8456 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.85233 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93317 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93317 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.23552 (qpc)
Elapsed time: 1ms (steady) 15.6ms (hires) 1.93102 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.07033 (qpc)
Elapsed time: 2ms (steady) 0ms (hires) 2.09405 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.9329 (qpc)
Elapsed time: 1ms (steady) 0ms (hires) 1.93263 (qpc)
Process returned 0 (0x0) execution time : 0.484 s
Press any key to continue.
duration_cast<microseconds>(finish - start).count()/1000.0steady_clock を使用すると、次のようになります。
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84263 (qpc)
Elapsed time: 1.843ms (steady) 0ms (hires) 1.84317 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.846ms (steady) 0ms (hires) 1.84694 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.8456 (qpc)
Elapsed time: 1.877ms (steady) 0ms (hires) 1.87685 (qpc)
Elapsed time: 1.916ms (steady) 15.6ms (hires) 1.9162 (qpc)
Elapsed time: 1.906ms (steady) 0ms (hires) 1.90623 (qpc)
Elapsed time: 1.905ms (steady) 0ms (hires) 1.90515 (qpc)
Elapsed time: 1.909ms (steady) 0ms (hires) 1.90919 (qpc)
Elapsed time: 1.905ms (steady) 0ms (hires) 1.90542 (qpc)
Elapsed time: 1.905ms (steady) 0ms (hires) 1.90488 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.943ms (steady) 15.6ms (hires) 1.94287 (qpc)
Elapsed time: 1.872ms (steady) 0ms (hires) 1.87281 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.846ms (steady) 15.6001ms (hires) 1.8464 (qpc)
Elapsed time: 1.875ms (steady) 0ms (hires) 1.87497 (qpc)
Elapsed time: 2.033ms (steady) 0ms (hires) 2.03449 (qpc)
Elapsed time: 1.922ms (steady) 0ms (hires) 1.92293 (qpc)
Elapsed time: 1.922ms (steady) 0ms (hires) 1.92293 (qpc)
Elapsed time: 1.926ms (steady) 0ms (hires) 1.92698 (qpc)
Elapsed time: 2.004ms (steady) 15.6ms (hires) 2.00485 (qpc)
Elapsed time: 1.847ms (steady) 0ms (hires) 1.84748 (qpc)
Elapsed time: 1.847ms (steady) 0ms (hires) 1.84748 (qpc)
Elapsed time: 1.848ms (steady) 0ms (hires) 1.84856 (qpc)
Elapsed time: 1.849ms (steady) 0ms (hires) 1.84937 (qpc)
Elapsed time: 2.299ms (steady) 0ms (hires) 2.29938 (qpc)
Elapsed time: 3.497ms (steady) 15.6ms (hires) 3.49664 (qpc)
Elapsed time: 3.528ms (steady) 0ms (hires) 3.52843 (qpc)
Elapsed time: 2.299ms (steady) 0ms (hires) 2.29857 (qpc)
Elapsed time: 1.849ms (steady) 0ms (hires) 1.84937 (qpc)
Elapsed time: 1.848ms (steady) 0ms (hires) 1.84856 (qpc)
Elapsed time: 1.848ms (steady) 0ms (hires) 1.84856 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84263 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84263 (qpc)
Elapsed time: 1.854ms (steady) 0ms (hires) 1.85395 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.843ms (steady) 0ms (hires) 1.84371 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.8429 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.843ms (steady) 0ms (hires) 1.8429 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.861ms (steady) 0ms (hires) 1.86123 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 2.058ms (steady) 0ms (hires) 2.05848 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.881ms (steady) 0ms (hires) 1.88144 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.843ms (steady) 0ms (hires) 1.84371 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84209 (qpc)
Elapsed time: 1.896ms (steady) 0ms (hires) 1.89653 (qpc)
Elapsed time: 1.842ms (steady) 0ms (hires) 1.84236 (qpc)
Elapsed time: 1.843ms (steady) 0ms (hires) 1.84398 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.886ms (steady) 0ms (hires) 1.88656 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.85ms (steady) 15.6ms (hires) 1.85099 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.848ms (steady) 15.6001ms (hires) 1.84883 (qpc)
Elapsed time: 2.066ms (steady) 0ms (hires) 2.06683 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.888ms (steady) 0ms (hires) 1.88817 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.853ms (steady) 15.6ms (hires) 1.85341 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 2.056ms (steady) 0ms (hires) 2.05605 (qpc)
Elapsed time: 1.88ms (steady) 0ms (hires) 1.8809 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.882ms (steady) 0ms (hires) 1.88224 (qpc)
Elapsed time: 1.849ms (steady) 15.6ms (hires) 1.85018 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 2.243ms (steady) 0ms (hires) 2.24333 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.849ms (steady) 15.6ms (hires) 1.85018 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 2.109ms (steady) 0ms (hires) 2.10914 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84533 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 2.006ms (steady) 0ms (hires) 2.00647 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.852ms (steady) 15.6ms (hires) 1.8526 (qpc)
Elapsed time: 2.534ms (steady) 0ms (hires) 2.53463 (qpc)
Elapsed time: 2.368ms (steady) 0ms (hires) 2.3681 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84533 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84533 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.853ms (steady) 15.6ms (hires) 1.85368 (qpc)
Elapsed time: 1.843ms (steady) 0ms (hires) 1.84371 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84533 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.852ms (steady) 15.6ms (hires) 1.85233 (qpc)
Elapsed time: 1.849ms (steady) 0ms (hires) 1.8491 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84587 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.891ms (steady) 15.6001ms (hires) 1.89168 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.846ms (steady) 0ms (hires) 1.84587 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.846ms (steady) 15.6ms (hires) 1.8464 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84587 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.848ms (steady) 15.6ms (hires) 1.84829 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.8456 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.846ms (steady) 15.6ms (hires) 1.84614 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.8456 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84506 (qpc)
Elapsed time: 1.872ms (steady) 15.6001ms (hires) 1.87281 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84452 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84587 (qpc)
Elapsed time: 1.844ms (steady) 0ms (hires) 1.84425 (qpc)
Elapsed time: 1.845ms (steady) 0ms (hires) 1.84479 (qpc)
Process returned 0 (0x0) execution time : 0.499 s
Press any key to continue
高解像度クロックが 0 から 15.6 ミリ秒の間で変動することに注意してください。また、steady_clock の比較にも注目してください。
私が抱えている問題は、update() コードがエンティティの位置を正確に 1000/60 (1 秒あたり 60 更新サイクル)、つまり 16.666etc ms ごとに更新する固定時間のゲーム ループを実装する場合、これは非常に返された雇用タイマーの変動値に近い！実際の問題は、1000/60 ミリ秒未満のゲーム ループ フレーム時間と、update() が完了した後の残りの時間の両方に対応するためにアキュムレータも実装すると、更新ループがより早く、不規則な時点で開始されることです。そうすべき。
上記の最小限のコードに問題がありますか?そうでない場合、適切な固定時間の実装のためにこれに関心を持つ必要がありますか? さらに、関連する場合、プログラム/スレッドを分離して、システム IRQ やその他のポーリング イベントによって中断されないようにする方法はありますか? 雇用タイマーはそのような中断の対象になる可能性があると思います。