54 lines
1.4 KiB
C++
54 lines
1.4 KiB
C++
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/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
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*
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* Copyright 2012 Matthew McCormick
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* Copyright 2015 Pawel 'l0ner' Soltys
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <string>
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#include <fstream>
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#include <unistd.h> // usleep
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#include <thread>
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#include "TCHAR.h"
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#include "pdh.h"
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static PDH_HQUERY cpuQuery;
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static PDH_HCOUNTER cpuTotal;
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#include "cpu.h"
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#include "luts.h"
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uint8_t get_cpu_count()
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{
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return static_cast< uint8_t >( std::thread::hardware_concurrency() );
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}
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float cpu_percentage( unsigned cpu_usage_delay )
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{
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PdhOpenQuery(NULL, 0, &cpuQuery);
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PdhAddCounter(cpuQuery, "\\Processor(_Total)\\% Processor Time", 0, &cpuTotal);
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PdhCollectQueryData(cpuQuery);
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usleep( cpu_usage_delay );
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PDH_FMT_COUNTERVALUE counterVal;
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PdhCollectQueryData(cpuQuery);
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PdhGetFormattedCounterValue(cpuTotal, PDH_FMT_DOUBLE, NULL, &counterVal);
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return static_cast< float >( counterVal.doubleValue );
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}
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