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++ // Copyright (C) 2024 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include "processorinfo.h"
++
++ ProcessorInfo::ProcessorInfo()
++ : m_normalizedUsage(1.0)
++ {
++ PdhOpenQuery(NULL, NULL, &m_cpuQuery);
++ PdhAddEnglishCounter(m_cpuQuery, L"\\Processor(_Total)\\% Processor Time", NULL, &m_cpuTotal);
++ }
++
++ ProcessorInfo::~ProcessorInfo()
++ {
++ PdhCloseQuery(m_cpuQuery);
++ }
++
++ double ProcessorInfo::updateTime()
++ {
++ PDH_FMT_COUNTERVALUE cVal;
++
++ PdhCollectQueryData(m_cpuQuery);
++ PdhGetFormattedCounterValue(m_cpuTotal, PDH_FMT_DOUBLE, NULL, &cVal);
++
++ m_normalizedUsage = (((m_maxSamples - 1) * m_normalizedUsage) + cVal.doubleValue)
++ / m_maxSamples;
++
++ return m_normalizedUsage;
++ }