forked from airat77786/MQL5Book
88 lines
3.4 KiB
MQL5
88 lines
3.4 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| TimeCheck.mq5 |
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//| Copyright 2021, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#include "..\..\Include\PRTF.mqh"
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//+------------------------------------------------------------------+
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//| Server time exact approximation |
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//| (keeps minutes and seconds in the shift) |
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//+------------------------------------------------------------------+
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datetime TimeTradeServerExact()
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{
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enum LOCATION
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{
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LOCAL,
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SERVER,
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};
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static datetime now[2] = {};
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static datetime then[2] = {};
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static int shiftInHours = 0;
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static long shiftInSeconds = 0;
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// keep track of 2 last execution times: now and then
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then[LOCAL] = now[LOCAL];
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then[SERVER] = now[SERVER];
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now[LOCAL] = TimeLocal();
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now[SERVER] = TimeCurrent();
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// during first call we don't have 2 time marks yet
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if(then[LOCAL] == 0 && then[SERVER] == 0) return 0;
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// when time marks differs equally on local and server computer
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// and server time is not paused due to weekend/holidays,
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// we can calculate the shift between them
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if(now[LOCAL] - now[SERVER] == then[LOCAL] - then[SERVER] && now[SERVER] != then[SERVER])
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{
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shiftInSeconds = now[LOCAL] - now[SERVER];
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shiftInHours = (int)MathRound(shiftInSeconds / 3600.0);
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PrintFormat("Shift update: hours: %d; seconds: %lld", shiftInHours, shiftInSeconds);
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}
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// NB: built-in TimeTradeServer function calculates:
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// TimeLocal() - shiftInHours * 3600
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return (datetime)(TimeLocal() - shiftInSeconds);
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}
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//+------------------------------------------------------------------+
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//| Script program start function |
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//+------------------------------------------------------------------+
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void OnStart()
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{
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// infinite loop until user interrupt it
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// to show all kinds of time
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while(!IsStopped())
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{
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Print("\n");
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PRTF(TimeLocal());
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PRTF(TimeCurrent());
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PRTF(TimeTradeServer());
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PRTF(TimeTradeServerExact());
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Sleep(1000);
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}
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}
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//+------------------------------------------------------------------+
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/*
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example output
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TimeLocal()=2021.09.02 16:03:34 / ok
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TimeCurrent()=2021.09.02 15:59:39 / ok
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TimeTradeServer()=2021.09.02 16:03:34 / ok
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TimeTradeServerExact()=1970.01.01 00:00:00 / ok
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TimeLocal()=2021.09.02 16:03:35 / ok
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TimeCurrent()=2021.09.02 15:59:40 / ok
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TimeTradeServer()=2021.09.02 16:03:35 / ok
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Shift update: hours: 0; seconds: 235
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TimeTradeServerExact()=2021.09.02 15:59:40 / ok
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TimeLocal()=2021.09.02 16:03:36 / ok
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TimeCurrent()=2021.09.02 15:59:41 / ok
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TimeTradeServer()=2021.09.02 16:03:36 / ok
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Shift update: hours: 0; seconds: 235
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TimeTradeServerExact()=2021.09.02 15:59:41 / ok
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TimeLocal()=2021.09.02 16:03:37 / ok
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TimeCurrent()=2021.09.02 15:59:41 / ok
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TimeTradeServer()=2021.09.02 16:03:37 / ok
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TimeTradeServerExact()=2021.09.02 15:59:42 / ok
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TimeLocal()=2021.09.02 16:03:38 / ok
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TimeCurrent()=2021.09.02 15:59:43 / ok
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TimeTradeServer()=2021.09.02 16:03:38 / ok
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TimeTradeServerExact()=2021.09.02 15:59:43 / ok
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*/
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//+------------------------------------------------------------------+
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