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/*
* Copyright (c) 2012, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef OS_WINDOWS_PDH_INTERFACE_HPP
#define OS_WINDOWS_PDH_INTERFACE_HPP
#include "memory/allStatic.hpp"
#include <pdh.h>
#include <pdhmsg.h>
class PdhDll: public AllStatic {
private:
static LONG _pdh_reference_count;
static LONG _critical_section;
static LONG _initialized;
static HMODULE _hModule;
static void initialize();
static PDH_STATUS (WINAPI *_PdhAddCounter)(HQUERY, LPCSTR, DWORD, HCOUNTER*);
static PDH_STATUS (WINAPI *_PdhOpenQuery)(LPCWSTR, DWORD, HQUERY*);
static DWORD (WINAPI *_PdhCloseQuery)(HQUERY);
static PDH_STATUS (WINAPI *_PdhCollectQueryData)(HQUERY);
static DWORD (WINAPI *_PdhGetFormattedCounterValue)(HCOUNTER, DWORD, LPDWORD, PPDH_FMT_COUNTERVALUE);
static PDH_STATUS (WINAPI *_PdhEnumObjectItems)(LPCTSTR, LPCTSTR, LPCTSTR, LPTSTR, LPDWORD, LPTSTR, LPDWORD, DWORD, DWORD);
static PDH_STATUS (WINAPI *_PdhRemoveCounter)(HCOUNTER);
static PDH_STATUS (WINAPI *_PdhLookupPerfNameByIndex)(LPCSTR, DWORD, LPSTR, LPDWORD);
static PDH_STATUS (WINAPI *_PdhMakeCounterPath)(PPDH_COUNTER_PATH_ELEMENTS, LPTSTR, LPDWORD, DWORD);
static PDH_STATUS (WINAPI *_PdhExpandWildCardPath)(LPCSTR, LPCSTR, PZZSTR, LPDWORD, DWORD);
public:
static PDH_STATUS PdhAddCounter(HQUERY, LPCSTR, DWORD, HCOUNTER*);
static PDH_STATUS PdhOpenQuery(LPCWSTR, DWORD, HQUERY*);
static DWORD PdhCloseQuery(HQUERY);
static PDH_STATUS PdhCollectQueryData(HQUERY);
static DWORD PdhGetFormattedCounterValue(HCOUNTER, DWORD, LPDWORD, PPDH_FMT_COUNTERVALUE);
static PDH_STATUS PdhEnumObjectItems(LPCTSTR, LPCTSTR, LPCTSTR, LPTSTR, LPDWORD, LPTSTR, LPDWORD, DWORD, DWORD);
static PDH_STATUS PdhRemoveCounter(HCOUNTER);
static PDH_STATUS PdhLookupPerfNameByIndex(LPCSTR, DWORD, LPSTR, LPDWORD);
static PDH_STATUS PdhMakeCounterPath(PPDH_COUNTER_PATH_ELEMENTS, LPTSTR, LPDWORD, DWORD);
static PDH_STATUS PdhExpandWildCardPath(LPCSTR, LPCSTR, PZZSTR, LPDWORD, DWORD);
static bool PdhStatusFail(PDH_STATUS pdhStat);
static bool PdhAttach();
static bool PdhDetach();
};
#endif // OS_WINDOWS_PDH_INTERFACE_HPP
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