80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
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#include "showcpumemory.h"
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#include <QThread>
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#include <QProcess>
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#include <QLabel>
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#include "datavar.h"
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#define MB (1024 * 1024)
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#define KB (1024)
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ShowCpuMemory::ShowCpuMemory(QObject *parent) : QObject(parent)
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{
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memoryPercent = 0;
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memoryAll = 0;
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memoryUse = 0;
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labMemory = 0;
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}
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void ShowCpuMemory::SetLab(QLabel *labMemory)
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{
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this->labMemory = labMemory;
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this->labMemory->setObjectName("CPU");
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}
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void ShowCpuMemory::GetCpuMemory()
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{
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while (true)
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{
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cpu = calCpuUsage();
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MEMORYSTATUSEX statex;
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statex.dwLength = sizeof(statex);
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GlobalMemoryStatusEx(&statex);
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memoryPercent = statex.dwMemoryLoad;
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memoryAll = statex.ullTotalPhys / MB;
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memoryFree = statex.ullAvailPhys / MB;
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memoryUse = memoryAll - memoryFree;
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QString msg = QString("CPUʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>: %1% | <20>ڴ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD>: %2%(<28><><EFBFBD><EFBFBD> %3 MB/<2F><> %4 MB) | ")
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.arg(cpu).arg(memoryPercent).arg(memoryUse).arg(memoryAll);
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labMemory->setText(msg);
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}
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}
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int ShowCpuMemory::calCpuUsage()
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{
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HANDLE hEvent;
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bool res;
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static FILETIME preIdleTime;
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static FILETIME preKernelTime;
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static FILETIME preUserTime;
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FILETIME idleTime;
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FILETIME kernelTime;
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FILETIME userTime;
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res = GetSystemTimes(&idleTime, &kernelTime, &userTime);
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preIdleTime = idleTime;
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preKernelTime = kernelTime;
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preUserTime = userTime;
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hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
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WaitForSingleObject(hEvent, 1000); //<2F>ȴ<EFBFBD>1000<30><30><EFBFBD><EFBFBD>
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res = GetSystemTimes(&idleTime, &kernelTime, &userTime);
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long long idle = CompareFileTime(preIdleTime, idleTime);
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long long kernel = CompareFileTime(preKernelTime, kernelTime);
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long long user = CompareFileTime(preUserTime, userTime);
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auto nCpuRate = (int)ceil(100.0 * (kernel + user - idle) / (kernel + user));
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return nCpuRate;
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}
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//ʱ<><CAB1>ת<EFBFBD><D7AA>
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__int64 ShowCpuMemory::Filetime2Int64(const FILETIME* ftime)
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{
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LARGE_INTEGER li;
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li.LowPart = ftime->dwLowDateTime;
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li.HighPart = ftime->dwHighDateTime;
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return li.QuadPart;
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}
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//<2F><><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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__int64 ShowCpuMemory::CompareFileTime(FILETIME preTime, FILETIME nowTime)
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{
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return Filetime2Int64(&nowTime) - Filetime2Int64(&preTime);
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}
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