新增CPU内存控件
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feiyangqingyun
239
control/cpumemorylabel/cpumemorylabel.cpp
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239
control/cpumemorylabel/cpumemorylabel.cpp
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#pragma execution_character_set("utf-8")
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#include "cpumemorylabel.h"
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#include "qtimer.h"
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#include "qprocess.h"
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#include "qdebug.h"
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#ifdef Q_OS_WIN
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#ifndef _WIN32_WINNT
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#define _WIN32_WINNT 0x502
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#endif
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#include "windows.h"
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#endif
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#define MB (1024 * 1024)
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#define KB (1024)
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CpuMemoryLabel::CpuMemoryLabel(QWidget *parent) : QLabel(parent)
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{
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totalNew = idleNew = totalOld = idleOld = 0;
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cpuPercent = 0;
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memoryPercent = 0;
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memoryAll = 0;
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memoryUse = 0;
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//获取CPU占用情况定时器
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timerCPU = new QTimer(this);
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connect(timerCPU, SIGNAL(timeout()), this, SLOT(getCPU()));
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//获取内存占用情况定时器
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timerMemory = new QTimer(this);
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connect(timerMemory, SIGNAL(timeout()), this, SLOT(getMemory()));
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//执行命令获取
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process = new QProcess(this);
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connect(process, SIGNAL(readyRead()), this, SLOT(readData()));
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showText = true;
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}
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CpuMemoryLabel::~CpuMemoryLabel()
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{
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this->stop();
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}
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void CpuMemoryLabel::start(int interval)
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{
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this->getCPU();
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this->getMemory();
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if (!timerCPU->isActive()) {
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timerCPU->start(interval);
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}
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if (!timerMemory->isActive()) {
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timerMemory->start(interval + 1000);
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}
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}
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void CpuMemoryLabel::stop()
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{
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process->close();
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if (timerCPU->isActive()) {
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timerCPU->stop();
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}
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if (timerMemory->isActive()) {
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timerMemory->stop();
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}
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}
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void CpuMemoryLabel::getCPU()
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{
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#ifdef Q_OS_WIN
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#if 0
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static FILETIME lastIdleTime;
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static FILETIME lastKernelTime;
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static FILETIME lastUserTime;
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FILETIME newIdleTime;
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FILETIME newKernelTime;
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FILETIME newUserTime;
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//采用GetSystemTimes获取的CPU占用和任务管理器的不一致
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GetSystemTimes(&newIdleTime, &newKernelTime, &newUserTime);
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int offset = 31;
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quint64 a, b;
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quint64 idle, kernel, user;
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a = (lastIdleTime.dwHighDateTime << offset) | lastIdleTime.dwLowDateTime;
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b = (newIdleTime.dwHighDateTime << offset) | newIdleTime.dwLowDateTime;
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idle = b - a;
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a = (lastKernelTime.dwHighDateTime << offset) | lastKernelTime.dwLowDateTime;
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b = (newKernelTime.dwHighDateTime << offset) | newKernelTime.dwLowDateTime;
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kernel = b - a;
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a = (lastUserTime.dwHighDateTime << offset) | lastUserTime.dwLowDateTime;
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b = (newUserTime.dwHighDateTime << offset) | newUserTime.dwLowDateTime;
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user = b - a;
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cpuPercent = float(kernel + user - idle) * 100 / float(kernel + user);
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lastIdleTime = newIdleTime;
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lastKernelTime = newKernelTime;
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lastUserTime = newUserTime;
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this->setData();
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#else
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//获取系统版本区分win10
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bool win10 = false;
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#if (QT_VERSION >= QT_VERSION_CHECK(5,4,0))
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win10 = (QSysInfo::productVersion().mid(0, 2).toInt() >= 10);
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#else
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win10 = (QSysInfo::WindowsVersion >= 192);
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#endif
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QString cmd = "\\Processor(_Total)\\% Processor Time";
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if (win10) {
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cmd = "\\Processor Information(_Total)\\% Processor Utility";
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}
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if (process->state() == QProcess::NotRunning) {
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process->start("typeperf", QStringList() << cmd);
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}
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#endif
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#elif defined(Q_OS_UNIX) && !defined(Q_OS_WASM)
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if (process->state() == QProcess::NotRunning) {
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totalNew = idleNew = 0;
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process->start("cat", QStringList() << "/proc/stat");
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}
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#endif
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}
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void CpuMemoryLabel::getMemory()
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{
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#ifdef Q_OS_WIN
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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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this->setData();
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#elif defined(Q_OS_UNIX) && !defined(Q_OS_WASM)
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if (process->state() == QProcess::NotRunning) {
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process->start("cat", QStringList() << "/proc/meminfo");
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}
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#endif
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}
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void CpuMemoryLabel::readData()
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{
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#ifdef Q_OS_WIN
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while (!process->atEnd()) {
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QString s = QLatin1String(process->readLine());
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s = s.split(",").last();
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s.replace("\r", "");
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s.replace("\n", "");
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s.replace("\"", "");
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if (!s.isEmpty() && s.length() < 10) {
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cpuPercent = qRound(s.toFloat());
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}
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}
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#elif defined(Q_OS_UNIX) && !defined(Q_OS_WASM)
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while (!process->atEnd()) {
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QString s = QLatin1String(process->readLine());
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if (s.startsWith("cpu")) {
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QStringList list = s.split(" ");
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idleNew = list.at(5).toUInt();
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foreach (QString value, list) {
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totalNew += value.toUInt();
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}
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quint64 total = totalNew - totalOld;
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quint64 idle = idleNew - idleOld;
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cpuPercent = 100 * (total - idle) / total;
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totalOld = totalNew;
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idleOld = idleNew;
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break;
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} else if (s.startsWith("MemTotal")) {
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s.replace(" ", "");
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s = s.split(":").at(1);
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memoryAll = s.left(s.length() - 3).toUInt() / KB;
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} else if (s.startsWith("MemFree")) {
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s.replace(" ", "");
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s = s.split(":").at(1);
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memoryFree = s.left(s.length() - 3).toUInt() / KB;
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} else if (s.startsWith("Buffers")) {
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s.replace(" ", "");
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s = s.split(":").at(1);
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memoryFree += s.left(s.length() - 3).toUInt() / KB;
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} else if (s.startsWith("Cached")) {
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s.replace(" ", "");
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s = s.split(":").at(1);
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memoryFree += s.left(s.length() - 3).toUInt() / KB;
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memoryUse = memoryAll - memoryFree;
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memoryPercent = 100 * memoryUse / memoryAll;
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break;
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}
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}
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#endif
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this->setData();
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}
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void CpuMemoryLabel::setData()
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{
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cpuPercent = (cpuPercent < 0 ? 0 : cpuPercent);
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cpuPercent = (cpuPercent > 100 ? 0 : cpuPercent);
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QString msg = QString("CPU %1% Mem %2% ( 已用 %3 MB / 共 %4 MB )").arg(cpuPercent).arg(memoryPercent).arg(memoryUse).arg(memoryAll);
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if (showText) {
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this->setText(msg);
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}
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emit textChanged(msg);
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emit valueChanged(cpuPercent, memoryPercent, memoryAll, memoryUse, memoryFree);
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}
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QSize CpuMemoryLabel::sizeHint() const
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{
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return QSize(300, 30);
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}
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QSize CpuMemoryLabel::minimumSizeHint() const
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{
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return QSize(30, 10);
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}
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bool CpuMemoryLabel::getShowText() const
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{
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return this->showText;
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}
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void CpuMemoryLabel::setShowText(bool showText)
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{
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this->showText = showText;
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}
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