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출처: http://arcaneness.tistory.com/entry/%EB%B9%84%EB%94%94%EC%98%A4-%EB%A9%94%EB%AA%A8%EB%A6%AC-%EA%B5%AC%ED%95%98%EA%B8%B0
http://code.msdn.microsoft.com/windowsdesktop/DirectX-Video-Memory-ee7d8319
여기에 나온 방법으로 했어도 실시간으로 변화하는 GPU 메모리 사용량을 표시 할수는 없었다. 내가... 잘 못한건가?.. 어째든 실시간 비디오 메모리 사용량을 측정하기 위해 Nvidia를 떠돌며 삽질만 하다가 Nvapi.dll을 통하여 해결하였다.
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// KGpuMon.h 源代码#pragma once#define MAX_GPU_NUM 4L // 监控的GPU个数（NVIDIA定义的最多GPU个数是64，这里最多只监控4个）#define MY_PROCESS_ERROR(Condition) do { if (!(Condition)) goto Exit0; } while (false)#define MAX_DISPLAY_CARDS 4 // 最多监控4块显卡（暂时应该够了吧）// 常量定义#define MAX_PHYSICAL_GPUS 64#define SHORT_STRING_MAX 64#define MAX_THERMAL_SENSORS_PER_GPU 3#define MAX_CLOCKS_PER_GPU 0x120#define MAX_PSTATES_PER_GPU 8#define MAX_USAGES_PER_GPU 33#define MAX_COOLER_PER_GPU 20#define MAX_MEMORY_VALUES_PER_GPU 5// 接口ID值#define ID_NvAPI_Initialize 0x0150E828#define ID_NvAPI_GPU_GetFullName 0xCEEE8E9F#define ID_NvAPI_GPU_GetThermalSettings 0xE3640A56#define ID_NvAPI_EnumNvidiaDisplayHandle 0x9ABDD40D#define ID_NvAPI_GetPhysicalGPUsFromDisplay 0x34EF9506#define ID_NvAPI_EnumPhysicalGPUs 0xE5AC921F#define ID_NvAPI_GPU_GetTachReading 0x5F608315#define ID_NvAPI_GPU_GetAllClocks 0x1BD69F49#define ID_NvAPI_GPU_GetPStates 0x60DED2ED#define ID_NvAPI_GPU_GetUsages 0x189A1FDF#define ID_NvAPI_GPU_GetCoolerSettings 0xDA141340#define ID_NvAPI_GPU_SetCoolerLevels 0x891FA0AE#define ID_NvAPI_GPU_GetMemoryInfo 0x774AA982#define ID_NvAPI_GetDisplayDriverVersion 0xF951A4D1#define ID_NvAPI_GetInterfaceVersionString 0x01053FA5#define ID_NvAPI_GPU_GetPCIIdentifiers 0x2DDFB66E// 版本号参数定义#define GPU_THERMAL_SETTINGS_VER (sizeof(NvGPUThermalSettings) | 0x10000)#define GPU_CLOCKS_VER (sizeof(NvClocks) | 0x20000)#define GPU_PSTATES_VER (sizeof(NvPStates) | 0x10000)#define GPU_USAGES_VER (sizeof(NvUsages) | 0x10000)#define GPU_COOLER_SETTINGS_VER (sizeof(NvGPUCoolerSettings) | 0x20000)#define GPU_MEMORY_INFO_VER (sizeof(NvMemoryInfo) | 0x20000)#define DISPLAY_DRIVER_VERSION_VER (sizeof(NvDisplayDriverVersion) | 0x10000)#define GPU_COOLER_LEVELS_VER (sizeof(NvGPUCoolerLevels) | 0x10000)enum NvStatus{ enumNvStatus_OK = 0, enumNvStatus_ERROR = -1, enumNvStatus_LIBRARY_NOT_FOUND = -2, enumNvStatus_NO_IMPLEMENTATION = -3, enumNvStatus_API_NOT_INTIALIZED = -4, enumNvStatus_INVALID_ARGUMENT = -5, enumNvStatus_NVIDIA_DEVICE_NOT_FOUND = -6, enumNvStatus_END_ENUMERATION = -7, enumNvStatus_INVALID_HANDLE = -8, enumNvStatus_INCOMPATIBLE_STRUCT_VERSION = -9, enumNvStatus_HANDLE_INVALIDATED = -10, enumNvStatus_OPENGL_CONTEXT_NOT_CURRENT = -11, enumNvStatus_NO_GL_EXPERT = -12, enumNvStatus_INSTRUMENTATION_DISABLED = -13, enumNvStatus_EXPECTED_LOGICAL_GPU_HANDLE = -100, enumNvStatus_EXPECTED_PHYSICAL_GPU_HANDLE = -101, enumNvStatus_EXPECTED_DISPLAY_HANDLE = -102, enumNvStatus_INVALID_COMBINATION = -103, enumNvStatus_NOT_SUPPORTED = -104, enumNvStatus_PORTID_NOT_FOUND = -105, enumNvStatus_EXPECTED_UNATTACHED_DISPLAY_HANDLE = -106, enumNvStatus_INVALID_PERF_LEVEL = -107, enumNvStatus_DEVICE_BUSY = -108, enumNvStatus_NV_PERSIST_FILE_NOT_FOUND = -109, enumNvStatus_PERSIST_DATA_NOT_FOUND = -110, enumNvStatus_EXPECTED_TV_DISPLAY = -111, enumNvStatus_EXPECTED_TV_DISPLAY_ON_DCONNECTOR = -112, enumNvStatus_NO_ACTIVE_SLI_TOPOLOGY = -113, enumNvStatus_SLI_RENDERING_MODE_NOTALLOWED = -114, enumNvStatus_EXPECTED_DIGITAL_FLAT_PANEL = -115, enumNvStatus_ARGUMENT_EXCEED_MAX_SIZE = -116, enumNvStatus_DEVICE_SWITCHING_NOT_ALLOWED = -117, enumNvStatus_TESTING_CLOCKS_NOT_SUPPORTED = -118, enumNvStatus_UNKNOWN_UNDERSCAN_CONFIG = -119, enumNvStatus_TIMEOUT_RECONFIGURING_GPU_TOPO = -120, enumNvStatus_DATA_NOT_FOUND = -121, enumNvStatus_EXPECTED_ANALOG_DISPLAY = -122, enumNvStatus_NO_VIDLINK = -123, enumNvStatus_REQUIRES_REBOOT = -124, enumNvStatus_INVALID_HYBRID_MODE = -125, enumNvStatus_MIXED_TARGET_TYPES = -126, enumNvStatus_SYSWOW64_NOT_SUPPORTED = -127, enumNvStatus_IMPLICIT_SET_GPU_TOPOLOGY_CHANGE_NOT_ALLOWED = -128, enumNvStatus_REQUEST_USER_TO_CLOSE_NON_MIGRATABLE_APPS = -129, enumNvStatus_OUT_OF_MEMORY = -130, enumNvStatus_WAS_STILL_DRAWING = -131, enumNvStatus_FILE_NOT_FOUND = -132, enumNvStatus_TOO_MANY_UNIQUE_STATE_OBJECTS = -133, enumNvStatus_INVALID_CALL = -134, enumNvStatus_D3D10_1_LIBRARY_NOT_FOUND = -135, enumNvStatus_FUNCTION_NOT_FOUND = -136};enum NvThermalController{ enumNvThermalController_NONE = 0, enumNvThermalController_GPU_INTERNAL, enumNvThermalController_ADM1032, enumNvThermalController_MAX6649, enumNvThermalController_MAX1617, enumNvThermalController_LM99, enumNvThermalController_LM89, enumNvThermalController_LM64, enumNvThermalController_ADT7473, enumNvThermalController_SBMAX6649, enumNvThermalController_VBIOSEVT, enumNvThermalController_OS, enumNvThermalController_UNKNOWN = -1,};enum NvThermalTarget{ enumNvThermalTarget_NONE = 0, enumNvThermalTarget_GPU = 1, enumNvThermalTarget_MEMORY = 2, enumNvThermalTarget_POWER_SUPPLY = 4, enumNvThermalTarget_BOARD = 8, enumNvThermalTarget_ALL = 15, enumNvThermalTarget_UNKNOWN = -1};typedef struct _NvSensor{ NvThermalController Controller; unsigned int DefaultMinTemp; unsigned int DefaultMaxTemp; unsigned int CurrentTemp; NvThermalTarget Target;}NvSensor;typedef struct _NvGPUThermalSettings{ unsigned int Version; unsigned int Count; NvSensor Sensor[MAX_THERMAL_SENSORS_PER_GPU];}NvGPUThermalSettings;typedef struct _NvClocks{ unsigned int Version; unsigned int Clock[MAX_CLOCKS_PER_GPU];}NvClocks;typedef struct _NvPState{ bool Present; int Percentage;}NvPState;typedef struct _NvPStates{ unsigned int Version; unsigned int Flags; NvPState PStates[MAX_PSTATES_PER_GPU];}NvPStates;typedef struct _NvUsages{ unsigned int Version; unsigned int Usages[MAX_USAGES_PER_GPU];}NvUsages;typedef struct _NvCooler{ int Type; int Controller; int DefaultMin; int DefaultMax; int CurrentMin; int CurrentMax; int CurrentLevel; int DefaultPolicy; int CurrentPolicy; int Target; int ControlType; int Active;}NvCooler;typedef struct _NvGPUCoolerSettings{ unsigned int Version; unsigned int Count; NvCooler Coolers[MAX_COOLER_PER_GPU];}NvGPUCoolerSettings;typedef struct _NvLevel{ int Level; int Policy;}NvLevel;typedef struct _NvGPUCoolerLevels{ unsigned int Version; NvLevel Levels[MAX_COOLER_PER_GPU];}NvGPUCoolerLevels;typedef struct _NvMemoryInfo{ unsigned int Version; unsigned int Values[MAX_MEMORY_VALUES_PER_GPU];}NvMemoryInfo;typedef struct _NvDisplayDriverVersion{ unsigned int Version; unsigned int DriverVersion; unsigned int BldChangeListNum; char szBuildBranch[SHORT_STRING_MAX]; char szAdapter[SHORT_STRING_MAX];}NvDisplayDriverVersion;typedef int NvPhysicalGpuHandle;typedef int NvDisplayHandle;// 函数定义typedef void* (*nvapi_QueryInterfaceType)(unsigned int uiInterfaceID);typedef NvStatus (*NvAPI_InitializeType)();typedef NvStatus (*NvAPI_GPU_GetFullNameType)(const NvPhysicalGpuHandle gpuHandle, char *pszName);typedef NvStatus (*NvAPI_GPU_GetThermalSettingsType)(const NvPhysicalGpuHandle gpuHandle, int sensorIndex, NvGPUThermalSettings *pnvGPUThermalSettings);typedef NvStatus (*NvAPI_EnumNvidiaDisplayHandleType)(const int thisEnum, NvDisplayHandle *pDisplayHandle);typedef NvStatus (*NvAPI_GetPhysicalGPUsFromDisplayType)(const NvDisplayHandle displayHandle, NvPhysicalGpuHandle *pGpuHandles, unsigned int *pGpuCount);typedef NvStatus (*NvAPI_EnumPhysicalGPUsType)(NvPhysicalGpuHandle *pGpuHandles, int *pGpuCount);typedef NvStatus (*NvAPI_GPU_GetTachReadingType)(const NvPhysicalGpuHandle gpuHandle, int *pnValue);typedef NvStatus (*NvAPI_GPU_GetAllClocksType)(const NvPhysicalGpuHandle gpuHandle, NvClocks *pnvClocks);typedef NvStatus (*NvAPI_GPU_GetPStatesType)(const NvPhysicalGpuHandle gpuHandle, NvPStates *pnvPStates);typedef NvStatus (*NvAPI_GPU_GetUsagesType)(const NvPhysicalGpuHandle gpuHandle, NvUsages *pnvUsages);typedef NvStatus (*NvAPI_GPU_GetCoolerSettingsType)(const NvPhysicalGpuHandle gpuHandle, int coolerIndex, NvGPUCoolerSettings *pnvGPUCoolerSettings);typedef NvStatus (*NvAPI_GPU_SetCoolerLevelsType)(const NvPhysicalGpuHandle gpuHandle, int coolerIndex, NvGPUCoolerLevels *pnvGPUCoolerLevels);typedef NvStatus (*NvAPI_GPU_GetMemoryInfoType)(const NvDisplayHandle displayHandle, NvMemoryInfo *pnvMemoryInfo);typedef NvStatus (*NvAPI_GetDisplayDriverVersionType)(const NvDisplayHandle displayHandle, NvDisplayDriverVersion *pnvDisplayDriverVersion);typedef NvStatus (*NvAPI_GetInterfaceVersionStringType)(char *pszVersion);typedef NvStatus (*NvAPI_GPU_GetPCIIdentifiersType)( const NvPhysicalGpuHandle gpuHandle, unsigned int *puiDeviceId, unsigned int *puiSubSystemId, unsigned int *puiRevisionId, unsigned int *puiExtDeviceId );//*****************************以下是类内部使用的结构体************************************///** @brief GPU信息*/typedef struct _GPU_INFO{ NvPhysicalGpuHandle nvGpuHandle; // GPU句柄 int nUsage; // GPU占用率}GPU_INFO;/** @brief 显卡信息*/typedef struct _DISPLAY_CARD_INFO{ NvDisplayHandle nvDisplayHandle; // 显卡句柄 int nGpuCount; // Gpu个数 DWORD dwTotalMemory; // 总显存大小（KB） DWORD dwFreeMemory; // 空闲显存大小（KB） GPU_INFO sGpuInfo[MAX_GPU_NUM]; // GPU信息}DISPLAY_CARD_INFO;//*****************************************************************************************///** @brief 显卡相关信息（可用于导出的结构体）*/typedef struct _DISPLAY_INFO{ int nGpuCount; // Gpu个数 int nGpuUsages[MAX_GPU_NUM]; // Gpu占用率 DWORD dwTotalMemory; // 总显存大小（KB） DWORD dwFreeMemory; // 空闲显存大小（KB）}DISPLAY_INFO;class KGpuMon{public: KGpuMon(void); ~KGpuMon(void); BOOL Init(); BOOL Unit(); int GetDisplayCardCount(); BOOL GetDisplayInfo(const int nCardIndex, DISPLAY_INFO *pDisplayInfo);private: int EnumDisplayCards(); BOOL GetGpuHandles(const NvDisplayHandle nvDisplayHandle, DISPLAY_CARD_INFO *pCardInfo); BOOL GetDisplayCardGpuUsages(const NvDisplayHandle nvDisplayHandle, DISPLAY_CARD_INFO *pCardInfo); BOOL GetDisplayCardMemoryInfo(const NvDisplayHandle nvDisplayHandle, DISPLAY_CARD_INFO *pCardInfo);private: nvapi_QueryInterfaceType m_pfnNvapi_QueryInterface; NvAPI_InitializeType m_pfnNvAPI_Initialize; NvAPI_GPU_GetFullNameType m_pfnNvAPI_GPU_GetFullName; NvAPI_GPU_GetThermalSettingsType m_pfnNvAPI_GPU_GetThermalSettings; NvAPI_EnumNvidiaDisplayHandleType m_pfnNvAPI_EnumNvidiaDisplayHandle; NvAPI_GetPhysicalGPUsFromDisplayType m_pfnNvAPI_GetPhysicalGPUsFromDisplay; NvAPI_EnumPhysicalGPUsType m_pfnNvAPI_EnumPhysicalGPUs; NvAPI_GPU_GetTachReadingType m_pfnNvAPI_GPU_GetTachReading; NvAPI_GPU_GetAllClocksType m_pfnNvAPI_GPU_GetAllClocks; NvAPI_GPU_GetPStatesType m_pfnNvAPI_GPU_GetPStates; NvAPI_GPU_GetUsagesType m_pfnNvAPI_GPU_GetUsages; NvAPI_GPU_GetCoolerSettingsType m_pfnNvAPI_GPU_GetCoolerSettings; NvAPI_GPU_SetCoolerLevelsType m_pfnNvAPI_GPU_SetCoolerLevels; NvAPI_GPU_GetMemoryInfoType m_pfnNvAPI_GPU_GetMemoryInfo; NvAPI_GetDisplayDriverVersionType m_pfnNvAPI_GetDisplayDriverVersion; NvAPI_GetInterfaceVersionStringType m_pfnNvAPI_GetInterfaceVersionString; NvAPI_GPU_GetPCIIdentifiersType m_pfnNvAPI_GPU_GetPCIIdentifiers; int m_nDisplayCardCount; DISPLAY_CARD_INFO* m_pDisplayCards; HMODULE m_hNvApiDll;};//**************************************************************************************************/// KGpuMon.cpp 源代码#include "StdAfx.h"#include "KGpuMon.h"KGpuMon::KGpuMon(void){ m_hNvApiDll = NULL; m_nDisplayCardCount = 0; m_pDisplayCards = NULL;}KGpuMon::~KGpuMon(void){ Unit();}BOOL KGpuMon::Init(){ BOOL bResult = FALSE; BOOL bRetCode = FALSE; int nIndex = 0; int nResult = 0; m_hNvApiDll = LoadLibrary(_T("nvapi.dll")); if (m_hNvApiDll) { m_pfnNvapi_QueryInterface = (nvapi_QueryInterfaceType)GetProcAddress(m_hNvApiDll, "nvapi_QueryInterface"); if (m_pfnNvapi_QueryInterface) { m_pfnNvAPI_Initialize = (NvAPI_InitializeType)m_pfnNvapi_QueryInterface(ID_NvAPI_Initialize); m_pfnNvAPI_GPU_GetFullName = (NvAPI_GPU_GetFullNameType)m_pfnNvapi_QueryInterface(ID_NvAPI_GPU_GetFullName); m_pfnNvAPI_GPU_GetThermalSettings = (NvAPI_GPU_GetThermalSettingsType)m_pfnNvapi_QueryInterface(ID_NvAPI_GPU_GetThermalSettings); m_pfnNvAPI_EnumNvidiaDisplayHandle = (NvAPI_EnumNvidiaDisplayHandleType)m_pfnNvapi_QueryInterface(ID_NvAPI_EnumNvidiaDisplayHandle); m_pfnNvAPI_GetPhysicalGPUsFromDisplay = (NvAPI_GetPhysicalGPUsFromDisplayType)m_pfnNvapi_QueryInterface(ID_NvAPI_GetPhysicalGPUsFromDisplay); m_pfnNvAPI_EnumPhysicalGPUs = (NvAPI_EnumPhysicalGPUsType)m_pfnNvapi_QueryInterface(ID_NvAPI_EnumPhysicalGPUs); m_pfnNvAPI_GPU_GetTachReading = (NvAPI_GPU_GetTachReadingType)m_pfnNvapi_QueryInterface(ID_NvAPI_GPU_GetTachReading); m_pfnNvAPI_GPU_GetAllClocks = (NvAPI_GPU_GetAllClocksType)m_pfnNvapi_QueryInterface(ID_NvAPI_GPU_GetAllClocks); m_pfnNvAPI_GPU_GetPStates = (NvAPI_GPU_GetPStatesType)m_pfnNvapi_QueryInterface(ID_NvAPI_GPU_GetPStates); m_pfnNvAPI_GPU_GetUsages = (NvAPI_GPU_GetUsagesType)m_pfnNvapi_QueryInterface(ID_NvAPI_GPU_GetUsages); m_pfnNvAPI_GPU_GetCoolerSettings = (NvAPI_GPU_GetCoolerSettingsType)m_pfnNvapi_QueryInterface(ID_NvAPI_GPU_GetCoolerSettings); m_pfnNvAPI_GPU_SetCoolerLevels = (NvAPI_GPU_SetCoolerLevelsType)m_pfnNvapi_QueryInterface(ID_NvAPI_GPU_SetCoolerLevels); m_pfnNvAPI_GPU_GetMemoryInfo = (NvAPI_GPU_GetMemoryInfoType)m_pfnNvapi_QueryInterface(ID_NvAPI_GPU_GetMemoryInfo); m_pfnNvAPI_GetDisplayDriverVersion = (NvAPI_GetDisplayDriverVersionType)m_pfnNvapi_QueryInterface(ID_NvAPI_GetDisplayDriverVersion); m_pfnNvAPI_GetInterfaceVersionString = (NvAPI_GetInterfaceVersionStringType)m_pfnNvapi_QueryInterface(ID_NvAPI_GetInterfaceVersionString); m_pfnNvAPI_GPU_GetPCIIdentifiers = (NvAPI_GPU_GetPCIIdentifiersType)m_pfnNvapi_QueryInterface(ID_NvAPI_GPU_GetPCIIdentifiers); if (m_pfnNvAPI_Initialize) { nResult = m_pfnNvAPI_Initialize(); if (enumNvStatus_OK == nResult) { m_pDisplayCards = new DISPLAY_CARD_INFO[MAX_DISPLAY_CARDS]; ZeroMemory(m_pDisplayCards, MAX_DISPLAY_CARDS * sizeof(DISPLAY_CARD_INFO)); // 获取显卡个数 nResult = EnumDisplayCards(); MY_PROCESS_ERROR(nResult > 0); // 获取每块显卡的GPU个数 for (nIndex = 0; nIndex < m_nDisplayCardCount; ++nIndex) { bRetCode = GetGpuHandles(m_pDisplayCards[nIndex].nvDisplayHandle, &m_pDisplayCards[nIndex]); MY_PROCESS_ERROR(bRetCode); } bResult = TRUE; } } } }Exit0: return bResult;}BOOL KGpuMon::Unit(){ m_nDisplayCardCount = 0; if (m_pDisplayCards) { delete []m_pDisplayCards; m_pDisplayCards = NULL; } if (m_hNvApiDll) { FreeLibrary(m_hNvApiDll); m_hNvApiDll = NULL; } return TRUE;}BOOL KGpuMon::GetDisplayInfo(const int nCardIndex, DISPLAY_INFO *pDisplayInfo){ BOOL bResult = FALSE; int nIndex = 0; if (nCardIndex < m_nDisplayCardCount) { bResult = GetDisplayCardGpuUsages(m_pDisplayCards[nCardIndex].nvDisplayHandle, &m_pDisplayCards[nCardIndex]); MY_PROCESS_ERROR(bResult); pDisplayInfo->nGpuCount = m_pDisplayCards[nCardIndex].nGpuCount; for (nIndex = 0; nIndex < pDisplayInfo->nGpuCount; ++nIndex) { pDisplayInfo->nGpuUsages[nIndex] = m_pDisplayCards[nCardIndex].sGpuInfo[nIndex].nUsage; } bResult = GetDisplayCardMemoryInfo(m_pDisplayCards[nCardIndex].nvDisplayHandle, &m_pDisplayCards[nCardIndex]); MY_PROCESS_ERROR(bResult); pDisplayInfo->dwTotalMemory = m_pDisplayCards[nCardIndex].dwTotalMemory; pDisplayInfo->dwFreeMemory = m_pDisplayCards[nCardIndex].dwFreeMemory; }Exit0: return bResult;}int KGpuMon::GetDisplayCardCount(){ return m_nDisplayCardCount;}int KGpuMon::EnumDisplayCards(){ NvStatus nvResult; NvDisplayHandle nvDisplayCardHandle; int nIndex = 0; m_nDisplayCardCount = 0; if (m_pfnNvAPI_EnumNvidiaDisplayHandle) { for (nIndex = 0; nIndex < MAX_DISPLAY_CARDS; ++nIndex) { nvResult = m_pfnNvAPI_EnumNvidiaDisplayHandle(nIndex, &nvDisplayCardHandle); if (enumNvStatus_OK == nvResult) { m_pDisplayCards[m_nDisplayCardCount].nvDisplayHandle = nvDisplayCardHandle; ++m_nDisplayCardCount; } } } return m_nDisplayCardCount;}BOOL KGpuMon::GetGpuHandles(const NvDisplayHandle nvDisplayHandle, DISPLAY_CARD_INFO *pCardInfo){ BOOL bResult = FALSE; NvStatus nvStatus; NvPhysicalGpuHandle *pnvHandles = NULL; int nIndex = 0; unsigned int uiGpuCount = 0; if (m_pfnNvAPI_GetPhysicalGPUsFromDisplay) { pnvHandles = new NvPhysicalGpuHandle[MAX_PHYSICAL_GPUS]; nvStatus = m_pfnNvAPI_GetPhysicalGPUsFromDisplay(nvDisplayHandle, pnvHandles, &uiGpuCount); if (enumNvStatus_OK == nvStatus) { pCardInfo->nGpuCount = min(uiGpuCount, MAX_GPU_NUM); for (nIndex = 0; nIndex < pCardInfo->nGpuCount; ++nIndex) { pCardInfo->sGpuInfo[nIndex].nvGpuHandle = pnvHandles[nIndex]; } bResult = TRUE; } delete []pnvHandles; pnvHandles = NULL; } return bResult;}BOOL KGpuMon::GetDisplayCardGpuUsages(const NvDisplayHandle nvDisplayHandle, DISPLAY_CARD_INFO *pCardInfo){ BOOL bResult = FALSE; int nIndex = 0; NvStatus nvStatus = enumNvStatus_ERROR; NvUsages *pnvUsages = NULL; if (m_pfnNvAPI_GPU_GetUsages) { pnvUsages = new NvUsages; pnvUsages->Version = GPU_USAGES_VER; for (nIndex = 0; nIndex < pCardInfo->nGpuCount; ++nIndex) { nvStatus = m_pfnNvAPI_GPU_GetUsages(pCardInfo->sGpuInfo[nIndex].nvGpuHandle, pnvUsages); if (enumNvStatus_OK == nvStatus) { pCardInfo->sGpuInfo[nIndex].nUsage = pnvUsages->Usages[2]; } } delete pnvUsages; pnvUsages = NULL; bResult = (enumNvStatus_OK == nvStatus) ? TRUE : FALSE; } return bResult;}BOOL KGpuMon::GetDisplayCardMemoryInfo(const NvDisplayHandle nvDisplayHandle, DISPLAY_CARD_INFO *pCardInfo){ BOOL bResult = FALSE; int nIndex = 0; NvStatus nvStatus = enumNvStatus_ERROR; NvUsages *pnvUsages = NULL; NvMemoryInfo sMemoryInfo; if (m_pfnNvAPI_GPU_GetMemoryInfo) { sMemoryInfo.Version = GPU_MEMORY_INFO_VER; nvStatus = m_pfnNvAPI_GPU_GetMemoryInfo(nvDisplayHandle, &sMemoryInfo); if (enumNvStatus_OK == nvStatus) { pCardInfo->dwTotalMemory = (DWORD)(sMemoryInfo.Values[0]); pCardInfo->dwFreeMemory = (DWORD)(sMemoryInfo.Values[4]); bResult = TRUE; } } return bResult;} |
http://blog.csdn.net/paopaoc/article/details/9093125
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