forked from amrali/CBitBuffer
58 lines
No EOL
4.7 KiB
MQL5
58 lines
No EOL
4.7 KiB
MQL5
#property script_show_inputs
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input datetime inFrom = D'2024.12.01';
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//#include "TicksShort.mqh" // Короткий формат хранения тиков.
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#include "TicksShortLite.mqh"
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// Возвращает размер массива в байтах.
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template <typename T>
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ulong GetSize( const T &Array[] ) { return((ulong)sizeof(T) * ArraySize(Array)); }
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template <typename T1, typename T2>
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double Criterion( const T1 &Decompression[], const T2 &Compression[], const ulong Interval )
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{
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const double Performance = (double)ArraySize(Decompression) / Interval;
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return(Performance * ((double)GetSize(Decompression) / GetSize(Compression)));
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}
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void OnStart()
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{
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MqlTick Ticks[]; // Для исходных тиков.
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if (CopyTicksRange(_Symbol, Ticks, COPY_TICKS_ALL,(ulong)inFrom * 1000) > 0)
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{
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//TICK_SHORT Ticks2[]; // Для сжатых тиков.
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uchar Ticks2[];
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ulong Interval = GetMicrosecondCount();
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TICKS_SHORT::Compress(Ticks, Ticks2); // Сжали.
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Interval = GetMicrosecondCount() - Interval;
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const double Performance = (double)ArraySize(Ticks) / Interval;
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// https://www.mql5.com/ru/forum/490384#comment_57497700
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long n1 = ArraySize(Ticks) * (long)sizeof(MqlTick);
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//long n2 = ArraySize(Ticks2) * (long)sizeof(TICK_SHORT);
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long n2 = ArraySize(Ticks2) * (long)sizeof(uchar);
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PrintFormat("Compressed %I64i bytes into %I64i bytes ==> %.2f%%",n1,n2,(double)n2/n1*100);
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Print("Compress performance: " + DoubleToString(Performance * sizeof(MqlTick) / 1.04858, 0) + " MB/s");
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Print("Compress performance: " + DoubleToString(Performance, 1) + " Ticks (millions)/sec.");
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Print("Compress performance criterion: " + DoubleToString(Criterion(Ticks, Ticks2, Interval), 1));
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MqlTick Ticks3[]; // Для разжатых тиков.
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ulong Interval2 = GetMicrosecondCount();
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TICKS_SHORT::Decompress(Ticks2, Ticks3); // Разжали.
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Interval2 = GetMicrosecondCount() - Interval2;
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const double Performance2 = (double)ArraySize(Ticks3) / Interval2;
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Print("Decompress performance: " + DoubleToString(Performance2 * sizeof(MqlTick) / 1.04858, 0) + " MB/s");
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Print("Decompress performance: " + DoubleToString(Performance2, 1) + " Ticks (millions)/sec.");
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Print("Decompress performance criterion: " + DoubleToString(Criterion(Ticks3, Ticks2, Interval2), 1));
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Print("Correct = " + (string)TICKS_SHORT::IsEqual(Ticks, Ticks3)); // Сравнили.
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}
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} |