mirror of
https://github.com/chibicitiberiu/rainmeter-studio.git
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172 lines
4.0 KiB
C++
172 lines
4.0 KiB
C++
/*
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Copyright (C) 2004 Kimmo Pekkola
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <windows.h>
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#include <vector>
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#include "Titledb.h"
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#include "PerfSnap.h"
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#include "PerfObj.h"
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#include "PerfCntr.h"
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#include "ObjList.h"
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#include "ObjInst.h"
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#include "../API/RainmeterAPI.h"
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#include "../../Library/RawString.h"
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#include "../../Library/DisableThreadLibraryCalls.h" // contains DllMain entry point
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struct MeasureData
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{
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CRawString objectName;
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CRawString counterName;
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CRawString instanceName;
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ULONGLONG oldValue;
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bool difference;
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bool firstTime;
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};
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ULONGLONG GetPerfData(PCTSTR ObjectName, PCTSTR InstanceName, PCTSTR CounterName);
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PLUGIN_EXPORT void Initialize(void** data, void* rm)
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{
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MeasureData* measure = new MeasureData;
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*data = measure;
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}
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PLUGIN_EXPORT void Reload(void* data, void* rm, double* maxValue)
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{
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MeasureData* measure = (MeasureData*)data;
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measure->objectName = RmReadString(rm, L"PerfMonObject", L"");
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measure->counterName = RmReadString(rm, L"PerfMonCounter", L"");
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measure->instanceName = RmReadString(rm, L"PerfMonInstance", L"");
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measure->difference = RmReadInt(rm, L"PerfMonDifference", 1) == 1;
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*maxValue = 0.0;
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}
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PLUGIN_EXPORT double Update(void* data)
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{
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MeasureData* measure = (MeasureData*)data;
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double value = 0;
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ULONGLONG longValue = GetPerfData(
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measure->objectName.c_str(),
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measure->instanceName.c_str(),
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measure->counterName.c_str());
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if (measure->difference)
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{
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// Compare with the old value
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if (!measure->firstTime)
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{
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value = (double)(longValue - measure->oldValue);
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}
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measure->oldValue = longValue;
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measure->firstTime = false;
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}
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else
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{
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value = (double)longValue;
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}
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return value;
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}
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PLUGIN_EXPORT void Finalize(void* data)
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{
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MeasureData* measure = (MeasureData*)data;
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delete measure;
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CPerfSnapshot::CleanUp();
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}
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ULONGLONG GetPerfData(LPCWSTR objectName, LPCWSTR instanceName, LPCWSTR counterName)
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{
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static CPerfTitleDatabase s_CounterTitles(PERF_TITLE_COUNTER);
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BYTE data[256];
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WCHAR name[256];
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ULONGLONG value = 0;
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CPerfSnapshot snapshot(&s_CounterTitles);
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CPerfObjectList objList(&snapshot, &s_CounterTitles);
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if (snapshot.TakeSnapshot(objectName))
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{
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CPerfObject* pPerfObj = objList.GetPerfObject(objectName);
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if (pPerfObj)
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{
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for (CPerfObjectInstance* pObjInst = pPerfObj->GetFirstObjectInstance();
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pObjInst != NULL;
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pObjInst = pPerfObj->GetNextObjectInstance())
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{
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if (*instanceName)
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{
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if (pObjInst->GetObjectInstanceName(name, 256))
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{
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if (_wcsicmp(instanceName, name) != 0)
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{
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delete pObjInst;
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continue;
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}
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}
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else
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{
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delete pObjInst;
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continue;
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}
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}
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CPerfCounter* pPerfCntr = pObjInst->GetCounterByName(counterName);
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if (pPerfCntr != NULL)
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{
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pPerfCntr->GetData(data, 256, NULL);
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if (pPerfCntr->GetSize() == 1)
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{
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value = *(BYTE*)data;
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}
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else if (pPerfCntr->GetSize() == 2)
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{
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value = *(WORD*)data;
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}
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else if (pPerfCntr->GetSize() == 4)
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{
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value = *(DWORD*)data;
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}
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else if (pPerfCntr->GetSize() == 8)
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{
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value = *(ULONGLONG*)data;
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}
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delete pPerfCntr;
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delete pObjInst;
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break; // No need to continue
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}
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delete pObjInst;
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}
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delete pPerfObj;
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}
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}
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return value;
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}
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