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Index » c++ » CPU USage Dll??

Thread overview

CPU USage Dll??
Jun 05, 2003 Tobi @ Mobile
Jun 05, 2003 Walter
Jun 06, 2003 Tobi @ Mobile
Jun 06, 2003 Walter

June 05, 2003

CPU USage Dll??

Posted by Tobi @ Mobile

Tobi @ Mobile

Hi there coders..

i am totally new to cpp and i am trying to make a dll that returns th
cpuusage,
what i have done is this :
----------------------------------------------------------------------------
----------------------------
// cpuusage.cpp (Windows NT/2000)
//
// Returns the CPU usage in percent on Windows NT/2000
//

#include <windows.h>
#include <conio.h>
#include <stdio.h>

#define SystemBasicInformation 0
#define SystemPerformanceInformation 2
#define SystemTimeInformation 3

#define Li2Double(x) ((double)((x).HighPart) * 4.294967296E9 +
(double)((x).LowPart))

/* The exported functions */
extern "C"
{
__declspec(dllexport) UINT GetCPUusage();
}

typedef struct
{
    DWORD dwUnknown1;
    ULONG uKeMaximumIncrement;
    ULONG uPageSize;
    ULONG uMmNumberOfPhysicalPages;
    ULONG uMmLowestPhysicalPage;
    ULONG uMmHighestPhysicalPage;
    ULONG uAllocationGranularity;
    PVOID pLowestUserAddress;
    PVOID pMmHighestUserAddress;
    ULONG uKeActiveProcessors;
    BYTE bKeNumberProcessors;
    BYTE bUnknown2;
    WORD wUnknown3;
} SYSTEM_BASIC_INFORMATION;

typedef struct
{
    LARGE_INTEGER liIdleTime;
    DWORD dwSpare[76];
} SYSTEM_PERFORMANCE_INFORMATION;

typedef struct
{
    LARGE_INTEGER liKeBootTime;
    LARGE_INTEGER liKeSystemTime;
    LARGE_INTEGER liExpTimeZoneBias;
    ULONG uCurrentTimeZoneId;
    DWORD dwReserved;
} SYSTEM_TIME_INFORMATION;

typedef LONG (WINAPI *PROCNTQSI)(UINT,PVOID,ULONG,PULONG);

PROCNTQSI NtQuerySystemInformation;

UINT GetCPUusage() //dllMain() //
{
    SYSTEM_PERFORMANCE_INFORMATION SysPerfInfo;
    SYSTEM_TIME_INFORMATION SysTimeInfo;
    SYSTEM_BASIC_INFORMATION SysBaseInfo;
    double dbIdleTime;
    double dbSystemTime;
    LONG status;
    LARGE_INTEGER liOldIdleTime = {0,0};
    LARGE_INTEGER liOldSystemTime = {0,0};
    UINT x=0;

    NtQuerySystemInformation = (PROCNTQSI)GetProcAddress(
GetModuleHandle("ntdll"), "NtQuerySystemInformation" );

    if (!NtQuerySystemInformation)
        return (0);

    // get number of processors in the system
    status = NtQuerySystemInformation(
SystemBasicInformation,&SysBaseInfo,sizeof(SysBaseInfo),NULL );
    if (status != NO_ERROR)
        return (0);

    //printf("\nCPU Usage (press any key to exit): ");
    while( x != 2 )
    {
        // get new system time
        status = NtQuerySystemInformation(
SystemTimeInformation,&SysTimeInfo,sizeof(SysTimeInfo),0 );
        if (status!=NO_ERROR)
            return (0);

        // get new CPU's idle time
        status = NtQuerySystemInformation(
SystemPerformanceInformation,&SysPerfInfo,sizeof(SysPerfInfo),NULL );
        if (status != NO_ERROR)
            return (0);

        // if it's a first call - skip it
        if (liOldIdleTime.QuadPart != 0)
        {
            // CurrentValue = NewValue - OldValue
            dbIdleTime = Li2Double(SysPerfInfo.liIdleTime) -
Li2Double(liOldIdleTime);
            dbSystemTime = Li2Double(SysTimeInfo.liKeSystemTime) -
Li2Double(liOldSystemTime);

            // CurrentCpuIdle = IdleTime / SystemTime
            dbIdleTime = dbIdleTime / dbSystemTime;

            // CurrentCpuUsage% = 100 - (CurrentCpuIdle * 100) /
NumberOfProcessors
            dbIdleTime = 100.0 - dbIdleTime * 100.0 /
(double)SysBaseInfo.bKeNumberProcessors + 0.5;

            //printf("\b\b\b\b%3d%",(UINT)dbIdleTime);
         //printf ("Usage : ",(UINT)dbIdleTime);
        }

        // store new CPU's idle and system time
        liOldIdleTime = SysPerfInfo.liIdleTime;
        liOldSystemTime = SysTimeInfo.liKeSystemTime;
        x++;
    }
   return (UINT)dbIdleTime;
}
----------------------------------------------------------------------------
-------------------------

so please be so nice and help me out..

when i compile this script typing "dmc -mn -WD cpuusage2"
all seems to be right, than the optlink compiler starts and prints the
following:
----------------------------------------------------------------------------
-------------------------
C:\dm\bin>dmc -mn -WD cpuusage
link cpuusage,,,,cpuusage/noi;
OPTLINK (R) for Win32  Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved

cpuusage.obj(cpuusage)
 Error 42: Symbol Undefined _GetProcAddress@8
cpuusage.obj(cpuusage)
 Error 42: Symbol Undefined _GetModuleHandleA@4
C:\dm\bin\..\lib\SNN.lib(isctype)
 Error 42: Symbol Undefined _GetStringTypeA@20
C:\dm\bin\..\lib\SNN.lib(tolower)
 Error 42: Symbol Undefined _LCMapStringA@24
C:\dm\bin\..\lib\SNN.lib(MBTOWC)
 Error 42: Symbol Undefined _MultiByteToWideChar@24
C:\dm\bin\..\lib\SNN.lib(thsup)
 Error 42: Symbol Undefined _GetCurrentThreadId@0
C:\dm\bin\..\lib\SNN.lib(semlock)
 Error 42: Symbol Undefined _CreateSemaphoreA@16
C:\dm\bin\..\lib\SNN.lib(semlock)
 Error 42: Symbol Undefined _ReleaseSemaphore@12
C:\dm\bin\..\lib\SNN.lib(semlock)
 Error 42: Symbol Undefined _WaitForSingleObject@8
C:\dm\bin\..\lib\SNN.lib(except)
 Error 42: Symbol Undefined _SetUnhandledExceptionFilter@4
C:\dm\bin\..\lib\SNN.lib(signal)
 Error 42: Symbol Undefined _SetConsoleCtrlHandler@8
C:\dm\bin\..\lib\SNN.lib(ehsup)
 Error 42: Symbol Undefined _RtlUnwind@16
C:\dm\bin\..\lib\SNN.lib(rtti)
 Error 42: Symbol Undefined _RaiseException@16
C:\dm\bin\..\lib\SNN.lib(cinit)
 Error 42: Symbol Undefined _GetEnvironmentStrings@0
C:\dm\bin\..\lib\SNN.lib(cinit)
 Error 42: Symbol Undefined _GetVersion@0
C:\dm\bin\..\lib\SNN.lib(cinit)
 Error 42: Symbol Undefined _FreeEnvironmentStringsA@4
C:\dm\bin\..\lib\SNN.lib(sbrk)
 Error 42: Symbol Undefined _VirtualFree@12
C:\dm\bin\..\lib\SNN.lib(sbrk)
 Error 42: Symbol Undefined _VirtualAlloc@16
C:\dm\bin\..\lib\SNN.lib(_exit)
 Error 42: Symbol Undefined _ExitProcess@4
C:\dm\bin\..\lib\SNN.lib(setnterr)
 Error 42: Symbol Undefined _GetLastError@0
C:\dm\bin\..\lib\SNN.lib(w32fater)
 Error 42: Symbol Undefined _GetStdHandle@4
C:\dm\bin\..\lib\SNN.lib(w32fater)
 Error 42: Symbol Undefined _WriteConsoleA@20

--- errorlevel 22
----------------------------------------------------------------------------
-------------------------

so.. any ideas on this??
what have i done wrong??

regards,
tobias wölki

-----------------------------------------------------
http://www.klangwerk.de
http://www.paraphonatic.de
http://www.tomcloud.de
mobile://+49.(0).172.5223442

ACHTUNG NEU :
Die Foren vom Klangwerk:
http://forum.klangwerk.de
http://www.hardcorebase.de
Einfach mal reinschauen und mitquatschen!!

EXTREM GEIL:
Besucht unseren neuen Shop..
http://www.equisto.de/klangwerk
-----------------------------------------------------

June 05, 2003

Re: CPU USage Dll??

Posted by Walter
in reply to Tobi @ Mobile

Walter

Posted in reply to Tobi @ Mobile

You'll need a DllMain() for your dll.

"Tobi @ Mobile" <tobi@klangwerk.de> wrote in message news:bbn6uk$2m5q$1@digitaldaemon.com...
> Hi there coders..
>
> i am totally new to cpp and i am trying to make a dll that returns th
> cpuusage,
> what i have done is this :
> --------------------------------------------------------------------------
--
> ----------------------------
> // cpuusage.cpp (Windows NT/2000)
> //
> // Returns the CPU usage in percent on Windows NT/2000
> //
>
> #include <windows.h>
> #include <conio.h>
> #include <stdio.h>
>
> #define SystemBasicInformation 0
> #define SystemPerformanceInformation 2
> #define SystemTimeInformation 3
>
> #define Li2Double(x) ((double)((x).HighPart) * 4.294967296E9 +
> (double)((x).LowPart))
>
> /* The exported functions */
> extern "C"
> {
> __declspec(dllexport) UINT GetCPUusage();
> }
>
> typedef struct
> {
>     DWORD dwUnknown1;
>     ULONG uKeMaximumIncrement;
>     ULONG uPageSize;
>     ULONG uMmNumberOfPhysicalPages;
>     ULONG uMmLowestPhysicalPage;
>     ULONG uMmHighestPhysicalPage;
>     ULONG uAllocationGranularity;
>     PVOID pLowestUserAddress;
>     PVOID pMmHighestUserAddress;
>     ULONG uKeActiveProcessors;
>     BYTE bKeNumberProcessors;
>     BYTE bUnknown2;
>     WORD wUnknown3;
> } SYSTEM_BASIC_INFORMATION;
>
> typedef struct
> {
>     LARGE_INTEGER liIdleTime;
>     DWORD dwSpare[76];
> } SYSTEM_PERFORMANCE_INFORMATION;
>
> typedef struct
> {
>     LARGE_INTEGER liKeBootTime;
>     LARGE_INTEGER liKeSystemTime;
>     LARGE_INTEGER liExpTimeZoneBias;
>     ULONG uCurrentTimeZoneId;
>     DWORD dwReserved;
> } SYSTEM_TIME_INFORMATION;
>
> typedef LONG (WINAPI *PROCNTQSI)(UINT,PVOID,ULONG,PULONG);
>
> PROCNTQSI NtQuerySystemInformation;
>
> UINT GetCPUusage() //dllMain() //
> {
>     SYSTEM_PERFORMANCE_INFORMATION SysPerfInfo;
>     SYSTEM_TIME_INFORMATION SysTimeInfo;
>     SYSTEM_BASIC_INFORMATION SysBaseInfo;
>     double dbIdleTime;
>     double dbSystemTime;
>     LONG status;
>     LARGE_INTEGER liOldIdleTime = {0,0};
>     LARGE_INTEGER liOldSystemTime = {0,0};
>     UINT x=0;
>
>     NtQuerySystemInformation = (PROCNTQSI)GetProcAddress(
> GetModuleHandle("ntdll"), "NtQuerySystemInformation" );
>
>     if (!NtQuerySystemInformation)
>         return (0);
>
>     // get number of processors in the system
>     status = NtQuerySystemInformation(
> SystemBasicInformation,&SysBaseInfo,sizeof(SysBaseInfo),NULL );
>     if (status != NO_ERROR)
>         return (0);
>
>     //printf("\nCPU Usage (press any key to exit): ");
>     while( x != 2 )
>     {
>         // get new system time
>         status = NtQuerySystemInformation(
> SystemTimeInformation,&SysTimeInfo,sizeof(SysTimeInfo),0 );
>         if (status!=NO_ERROR)
>             return (0);
>
>         // get new CPU's idle time
>         status = NtQuerySystemInformation(
> SystemPerformanceInformation,&SysPerfInfo,sizeof(SysPerfInfo),NULL );
>         if (status != NO_ERROR)
>             return (0);
>
>         // if it's a first call - skip it
>         if (liOldIdleTime.QuadPart != 0)
>         {
>             // CurrentValue = NewValue - OldValue
>             dbIdleTime = Li2Double(SysPerfInfo.liIdleTime) -
> Li2Double(liOldIdleTime);
>             dbSystemTime = Li2Double(SysTimeInfo.liKeSystemTime) -
> Li2Double(liOldSystemTime);
>
>             // CurrentCpuIdle = IdleTime / SystemTime
>             dbIdleTime = dbIdleTime / dbSystemTime;
>
>             // CurrentCpuUsage% = 100 - (CurrentCpuIdle * 100) /
> NumberOfProcessors
>             dbIdleTime = 100.0 - dbIdleTime * 100.0 /
> (double)SysBaseInfo.bKeNumberProcessors + 0.5;
>
>             //printf("\b\b\b\b%3d%",(UINT)dbIdleTime);
>          //printf ("Usage : ",(UINT)dbIdleTime);
>         }
>
>         // store new CPU's idle and system time
>         liOldIdleTime = SysPerfInfo.liIdleTime;
>         liOldSystemTime = SysTimeInfo.liKeSystemTime;
>         x++;
>     }
>    return (UINT)dbIdleTime;
> }
> --------------------------------------------------------------------------
--
> -------------------------
>
> so please be so nice and help me out..
>
> when i compile this script typing "dmc -mn -WD cpuusage2"
> all seems to be right, than the optlink compiler starts and prints the
> following:
> --------------------------------------------------------------------------
--
> -------------------------
> C:\dm\bin>dmc -mn -WD cpuusage
> link cpuusage,,,,cpuusage/noi;
> OPTLINK (R) for Win32  Release 7.50B1
> Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
>
> cpuusage.obj(cpuusage)
>  Error 42: Symbol Undefined _GetProcAddress@8
> cpuusage.obj(cpuusage)
>  Error 42: Symbol Undefined _GetModuleHandleA@4
> C:\dm\bin\..\lib\SNN.lib(isctype)
>  Error 42: Symbol Undefined _GetStringTypeA@20
> C:\dm\bin\..\lib\SNN.lib(tolower)
>  Error 42: Symbol Undefined _LCMapStringA@24
> C:\dm\bin\..\lib\SNN.lib(MBTOWC)
>  Error 42: Symbol Undefined _MultiByteToWideChar@24
> C:\dm\bin\..\lib\SNN.lib(thsup)
>  Error 42: Symbol Undefined _GetCurrentThreadId@0
> C:\dm\bin\..\lib\SNN.lib(semlock)
>  Error 42: Symbol Undefined _CreateSemaphoreA@16
> C:\dm\bin\..\lib\SNN.lib(semlock)
>  Error 42: Symbol Undefined _ReleaseSemaphore@12
> C:\dm\bin\..\lib\SNN.lib(semlock)
>  Error 42: Symbol Undefined _WaitForSingleObject@8
> C:\dm\bin\..\lib\SNN.lib(except)
>  Error 42: Symbol Undefined _SetUnhandledExceptionFilter@4
> C:\dm\bin\..\lib\SNN.lib(signal)
>  Error 42: Symbol Undefined _SetConsoleCtrlHandler@8
> C:\dm\bin\..\lib\SNN.lib(ehsup)
>  Error 42: Symbol Undefined _RtlUnwind@16
> C:\dm\bin\..\lib\SNN.lib(rtti)
>  Error 42: Symbol Undefined _RaiseException@16
> C:\dm\bin\..\lib\SNN.lib(cinit)
>  Error 42: Symbol Undefined _GetEnvironmentStrings@0
> C:\dm\bin\..\lib\SNN.lib(cinit)
>  Error 42: Symbol Undefined _GetVersion@0
> C:\dm\bin\..\lib\SNN.lib(cinit)
>  Error 42: Symbol Undefined _FreeEnvironmentStringsA@4
> C:\dm\bin\..\lib\SNN.lib(sbrk)
>  Error 42: Symbol Undefined _VirtualFree@12
> C:\dm\bin\..\lib\SNN.lib(sbrk)
>  Error 42: Symbol Undefined _VirtualAlloc@16
> C:\dm\bin\..\lib\SNN.lib(_exit)
>  Error 42: Symbol Undefined _ExitProcess@4
> C:\dm\bin\..\lib\SNN.lib(setnterr)
>  Error 42: Symbol Undefined _GetLastError@0
> C:\dm\bin\..\lib\SNN.lib(w32fater)
>  Error 42: Symbol Undefined _GetStdHandle@4
> C:\dm\bin\..\lib\SNN.lib(w32fater)
>  Error 42: Symbol Undefined _WriteConsoleA@20
>
> --- errorlevel 22
> --------------------------------------------------------------------------
--
> -------------------------
>
> so.. any ideas on this??
> what have i done wrong??
>
> regards,
> tobias wölki
>
> -----------------------------------------------------
> http://www.klangwerk.de
> http://www.paraphonatic.de
> http://www.tomcloud.de
> mobile://+49.(0).172.5223442
>
> ACHTUNG NEU :
> Die Foren vom Klangwerk:
> http://forum.klangwerk.de
> http://www.hardcorebase.de
> Einfach mal reinschauen und mitquatschen!!
>
> EXTREM GEIL:
> Besucht unseren neuen Shop..
> http://www.equisto.de/klangwerk
> -----------------------------------------------------
>
>

June 06, 2003

Re: CPU USage Dll??

Posted by Tobi @ Mobile
in reply to Walter

Tobi @ Mobile

Posted in reply to Walter

Hi Walter,

and thank you first for your reply,
i have noticed that i need a DllMain(), bu i am not clear where to put it,
and how the
syntax is..

do i have the includes in the dllmain??
pleas show me where to put it that my script runs..

thanks in advance..

tobi;)
"Walter" <walter@digitalmars.com> schrieb im Newsbeitrag
news:bbnu1d$b19$1@digitaldaemon.com...
> You'll need a DllMain() for your dll.
>
> "Tobi @ Mobile" <tobi@klangwerk.de> wrote in message news:bbn6uk$2m5q$1@digitaldaemon.com...
> > Hi there coders..
> >
> > i am totally new to cpp and i am trying to make a dll that returns th
> > cpuusage,
> > what i have done is this :
>
> --------------------------------------------------------------------------
> --
> > ----------------------------
> > // cpuusage.cpp (Windows NT/2000)
> > //
> > // Returns the CPU usage in percent on Windows NT/2000
> > //
> >
> > #include <windows.h>
> > #include <conio.h>
> > #include <stdio.h>
> >
> > #define SystemBasicInformation 0
> > #define SystemPerformanceInformation 2
> > #define SystemTimeInformation 3
> >
> > #define Li2Double(x) ((double)((x).HighPart) * 4.294967296E9 +
> > (double)((x).LowPart))
> >
> > /* The exported functions */
> > extern "C"
> > {
> > __declspec(dllexport) UINT GetCPUusage();
> > }
> >
> > typedef struct
> > {
> >     DWORD dwUnknown1;
> >     ULONG uKeMaximumIncrement;
> >     ULONG uPageSize;
> >     ULONG uMmNumberOfPhysicalPages;
> >     ULONG uMmLowestPhysicalPage;
> >     ULONG uMmHighestPhysicalPage;
> >     ULONG uAllocationGranularity;
> >     PVOID pLowestUserAddress;
> >     PVOID pMmHighestUserAddress;
> >     ULONG uKeActiveProcessors;
> >     BYTE bKeNumberProcessors;
> >     BYTE bUnknown2;
> >     WORD wUnknown3;
> > } SYSTEM_BASIC_INFORMATION;
> >
> > typedef struct
> > {
> >     LARGE_INTEGER liIdleTime;
> >     DWORD dwSpare[76];
> > } SYSTEM_PERFORMANCE_INFORMATION;
> >
> > typedef struct
> > {
> >     LARGE_INTEGER liKeBootTime;
> >     LARGE_INTEGER liKeSystemTime;
> >     LARGE_INTEGER liExpTimeZoneBias;
> >     ULONG uCurrentTimeZoneId;
> >     DWORD dwReserved;
> > } SYSTEM_TIME_INFORMATION;
> >
> > typedef LONG (WINAPI *PROCNTQSI)(UINT,PVOID,ULONG,PULONG);
> >
> > PROCNTQSI NtQuerySystemInformation;
> >
> > UINT GetCPUusage() //dllMain() //
> > {
> >     SYSTEM_PERFORMANCE_INFORMATION SysPerfInfo;
> >     SYSTEM_TIME_INFORMATION SysTimeInfo;
> >     SYSTEM_BASIC_INFORMATION SysBaseInfo;
> >     double dbIdleTime;
> >     double dbSystemTime;
> >     LONG status;
> >     LARGE_INTEGER liOldIdleTime = {0,0};
> >     LARGE_INTEGER liOldSystemTime = {0,0};
> >     UINT x=0;
> >
> >     NtQuerySystemInformation = (PROCNTQSI)GetProcAddress(
> > GetModuleHandle("ntdll"), "NtQuerySystemInformation" );
> >
> >     if (!NtQuerySystemInformation)
> >         return (0);
> >
> >     // get number of processors in the system
> >     status = NtQuerySystemInformation(
> > SystemBasicInformation,&SysBaseInfo,sizeof(SysBaseInfo),NULL );
> >     if (status != NO_ERROR)
> >         return (0);
> >
> >     //printf("\nCPU Usage (press any key to exit): ");
> >     while( x != 2 )
> >     {
> >         // get new system time
> >         status = NtQuerySystemInformation(
> > SystemTimeInformation,&SysTimeInfo,sizeof(SysTimeInfo),0 );
> >         if (status!=NO_ERROR)
> >             return (0);
> >
> >         // get new CPU's idle time
> >         status = NtQuerySystemInformation(
> > SystemPerformanceInformation,&SysPerfInfo,sizeof(SysPerfInfo),NULL );
> >         if (status != NO_ERROR)
> >             return (0);
> >
> >         // if it's a first call - skip it
> >         if (liOldIdleTime.QuadPart != 0)
> >         {
> >             // CurrentValue = NewValue - OldValue
> >             dbIdleTime = Li2Double(SysPerfInfo.liIdleTime) -
> > Li2Double(liOldIdleTime);
> >             dbSystemTime = Li2Double(SysTimeInfo.liKeSystemTime) -
> > Li2Double(liOldSystemTime);
> >
> >             // CurrentCpuIdle = IdleTime / SystemTime
> >             dbIdleTime = dbIdleTime / dbSystemTime;
> >
> >             // CurrentCpuUsage% = 100 - (CurrentCpuIdle * 100) /
> > NumberOfProcessors
> >             dbIdleTime = 100.0 - dbIdleTime * 100.0 /
> > (double)SysBaseInfo.bKeNumberProcessors + 0.5;
> >
> >             //printf("\b\b\b\b%3d%",(UINT)dbIdleTime);
> >          //printf ("Usage : ",(UINT)dbIdleTime);
> >         }
> >
> >         // store new CPU's idle and system time
> >         liOldIdleTime = SysPerfInfo.liIdleTime;
> >         liOldSystemTime = SysTimeInfo.liKeSystemTime;
> >         x++;
> >     }
> >    return (UINT)dbIdleTime;
> > }
>
> --------------------------------------------------------------------------
> --
> > -------------------------
> >
> > so please be so nice and help me out..
> >
> > when i compile this script typing "dmc -mn -WD cpuusage2"
> > all seems to be right, than the optlink compiler starts and prints the
> > following:
>
> --------------------------------------------------------------------------
> --
> > -------------------------
> > C:\dm\bin>dmc -mn -WD cpuusage
> > link cpuusage,,,,cpuusage/noi;
> > OPTLINK (R) for Win32  Release 7.50B1
> > Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
> >
> > cpuusage.obj(cpuusage)
> >  Error 42: Symbol Undefined _GetProcAddress@8
> > cpuusage.obj(cpuusage)
> >  Error 42: Symbol Undefined _GetModuleHandleA@4
> > C:\dm\bin\..\lib\SNN.lib(isctype)
> >  Error 42: Symbol Undefined _GetStringTypeA@20
> > C:\dm\bin\..\lib\SNN.lib(tolower)
> >  Error 42: Symbol Undefined _LCMapStringA@24
> > C:\dm\bin\..\lib\SNN.lib(MBTOWC)
> >  Error 42: Symbol Undefined _MultiByteToWideChar@24
> > C:\dm\bin\..\lib\SNN.lib(thsup)
> >  Error 42: Symbol Undefined _GetCurrentThreadId@0
> > C:\dm\bin\..\lib\SNN.lib(semlock)
> >  Error 42: Symbol Undefined _CreateSemaphoreA@16
> > C:\dm\bin\..\lib\SNN.lib(semlock)
> >  Error 42: Symbol Undefined _ReleaseSemaphore@12
> > C:\dm\bin\..\lib\SNN.lib(semlock)
> >  Error 42: Symbol Undefined _WaitForSingleObject@8
> > C:\dm\bin\..\lib\SNN.lib(except)
> >  Error 42: Symbol Undefined _SetUnhandledExceptionFilter@4
> > C:\dm\bin\..\lib\SNN.lib(signal)
> >  Error 42: Symbol Undefined _SetConsoleCtrlHandler@8
> > C:\dm\bin\..\lib\SNN.lib(ehsup)
> >  Error 42: Symbol Undefined _RtlUnwind@16
> > C:\dm\bin\..\lib\SNN.lib(rtti)
> >  Error 42: Symbol Undefined _RaiseException@16
> > C:\dm\bin\..\lib\SNN.lib(cinit)
> >  Error 42: Symbol Undefined _GetEnvironmentStrings@0
> > C:\dm\bin\..\lib\SNN.lib(cinit)
> >  Error 42: Symbol Undefined _GetVersion@0
> > C:\dm\bin\..\lib\SNN.lib(cinit)
> >  Error 42: Symbol Undefined _FreeEnvironmentStringsA@4
> > C:\dm\bin\..\lib\SNN.lib(sbrk)
> >  Error 42: Symbol Undefined _VirtualFree@12
> > C:\dm\bin\..\lib\SNN.lib(sbrk)
> >  Error 42: Symbol Undefined _VirtualAlloc@16
> > C:\dm\bin\..\lib\SNN.lib(_exit)
> >  Error 42: Symbol Undefined _ExitProcess@4
> > C:\dm\bin\..\lib\SNN.lib(setnterr)
> >  Error 42: Symbol Undefined _GetLastError@0
> > C:\dm\bin\..\lib\SNN.lib(w32fater)
> >  Error 42: Symbol Undefined _GetStdHandle@4
> > C:\dm\bin\..\lib\SNN.lib(w32fater)
> >  Error 42: Symbol Undefined _WriteConsoleA@20
> >
> > --- errorlevel 22
>
> --------------------------------------------------------------------------
> --
> > -------------------------
> >
> > so.. any ideas on this??
> > what have i done wrong??
> >
> > regards,
> > tobias wölki
> >
> > -----------------------------------------------------
> > http://www.klangwerk.de
> > http://www.paraphonatic.de
> > http://www.tomcloud.de
> > mobile://+49.(0).172.5223442
> >
> > ACHTUNG NEU :
> > Die Foren vom Klangwerk:
> > http://forum.klangwerk.de
> > http://www.hardcorebase.de
> > Einfach mal reinschauen und mitquatschen!!
> >
> > EXTREM GEIL:
> > Besucht unseren neuen Shop..
> > http://www.equisto.de/klangwerk
> > -----------------------------------------------------
> >
> >
>
>

June 06, 2003

Re: CPU USage Dll??

Posted by Walter
in reply to Tobi @ Mobile

Walter

Posted in reply to Tobi @ Mobile

I suggest getting the book "Advanced Windows" by Jeffrey Richter from www.digitalmars.com/bibliography.html

It explains in detail how to set up DllMain(), what its arguments are, what the contraints are, setting up the .def file, etc. It's not something I can set out in a few lines.

"Tobi @ Mobile" <tobi@klangwerk.de> wrote in message news:bbpcog$1k7j$1@digitaldaemon.com...
> Hi Walter,
>
> and thank you first for your reply,
> i have noticed that i need a DllMain(), bu i am not clear where to put it,
> and how the
> syntax is..
>
> do i have the includes in the dllmain??
> pleas show me where to put it that my script runs..
>
> thanks in advance..
>
> tobi;)
> "Walter" <walter@digitalmars.com> schrieb im Newsbeitrag
> news:bbnu1d$b19$1@digitaldaemon.com...
> > You'll need a DllMain() for your dll.
> >
> > "Tobi @ Mobile" <tobi@klangwerk.de> wrote in message news:bbn6uk$2m5q$1@digitaldaemon.com...
> > > Hi there coders..
> > >
> > > i am totally new to cpp and i am trying to make a dll that returns th
> > > cpuusage,
> > > what i have done is this :
> >
>
> --------------------------------------------------------------------------
> > --
> > > ----------------------------
> > > // cpuusage.cpp (Windows NT/2000)
> > > //
> > > // Returns the CPU usage in percent on Windows NT/2000
> > > //
> > >
> > > #include <windows.h>
> > > #include <conio.h>
> > > #include <stdio.h>
> > >
> > > #define SystemBasicInformation 0
> > > #define SystemPerformanceInformation 2
> > > #define SystemTimeInformation 3
> > >
> > > #define Li2Double(x) ((double)((x).HighPart) * 4.294967296E9 +
> > > (double)((x).LowPart))
> > >
> > > /* The exported functions */
> > > extern "C"
> > > {
> > > __declspec(dllexport) UINT GetCPUusage();
> > > }
> > >
> > > typedef struct
> > > {
> > >     DWORD dwUnknown1;
> > >     ULONG uKeMaximumIncrement;
> > >     ULONG uPageSize;
> > >     ULONG uMmNumberOfPhysicalPages;
> > >     ULONG uMmLowestPhysicalPage;
> > >     ULONG uMmHighestPhysicalPage;
> > >     ULONG uAllocationGranularity;
> > >     PVOID pLowestUserAddress;
> > >     PVOID pMmHighestUserAddress;
> > >     ULONG uKeActiveProcessors;
> > >     BYTE bKeNumberProcessors;
> > >     BYTE bUnknown2;
> > >     WORD wUnknown3;
> > > } SYSTEM_BASIC_INFORMATION;
> > >
> > > typedef struct
> > > {
> > >     LARGE_INTEGER liIdleTime;
> > >     DWORD dwSpare[76];
> > > } SYSTEM_PERFORMANCE_INFORMATION;
> > >
> > > typedef struct
> > > {
> > >     LARGE_INTEGER liKeBootTime;
> > >     LARGE_INTEGER liKeSystemTime;
> > >     LARGE_INTEGER liExpTimeZoneBias;
> > >     ULONG uCurrentTimeZoneId;
> > >     DWORD dwReserved;
> > > } SYSTEM_TIME_INFORMATION;
> > >
> > > typedef LONG (WINAPI *PROCNTQSI)(UINT,PVOID,ULONG,PULONG);
> > >
> > > PROCNTQSI NtQuerySystemInformation;
> > >
> > > UINT GetCPUusage() //dllMain() //
> > > {
> > >     SYSTEM_PERFORMANCE_INFORMATION SysPerfInfo;
> > >     SYSTEM_TIME_INFORMATION SysTimeInfo;
> > >     SYSTEM_BASIC_INFORMATION SysBaseInfo;
> > >     double dbIdleTime;
> > >     double dbSystemTime;
> > >     LONG status;
> > >     LARGE_INTEGER liOldIdleTime = {0,0};
> > >     LARGE_INTEGER liOldSystemTime = {0,0};
> > >     UINT x=0;
> > >
> > >     NtQuerySystemInformation = (PROCNTQSI)GetProcAddress(
> > > GetModuleHandle("ntdll"), "NtQuerySystemInformation" );
> > >
> > >     if (!NtQuerySystemInformation)
> > >         return (0);
> > >
> > >     // get number of processors in the system
> > >     status = NtQuerySystemInformation(
> > > SystemBasicInformation,&SysBaseInfo,sizeof(SysBaseInfo),NULL );
> > >     if (status != NO_ERROR)
> > >         return (0);
> > >
> > >     //printf("\nCPU Usage (press any key to exit): ");
> > >     while( x != 2 )
> > >     {
> > >         // get new system time
> > >         status = NtQuerySystemInformation(
> > > SystemTimeInformation,&SysTimeInfo,sizeof(SysTimeInfo),0 );
> > >         if (status!=NO_ERROR)
> > >             return (0);
> > >
> > >         // get new CPU's idle time
> > >         status = NtQuerySystemInformation(
> > > SystemPerformanceInformation,&SysPerfInfo,sizeof(SysPerfInfo),NULL );
> > >         if (status != NO_ERROR)
> > >             return (0);
> > >
> > >         // if it's a first call - skip it
> > >         if (liOldIdleTime.QuadPart != 0)
> > >         {
> > >             // CurrentValue = NewValue - OldValue
> > >             dbIdleTime = Li2Double(SysPerfInfo.liIdleTime) -
> > > Li2Double(liOldIdleTime);
> > >             dbSystemTime = Li2Double(SysTimeInfo.liKeSystemTime) -
> > > Li2Double(liOldSystemTime);
> > >
> > >             // CurrentCpuIdle = IdleTime / SystemTime
> > >             dbIdleTime = dbIdleTime / dbSystemTime;
> > >
> > >             // CurrentCpuUsage% = 100 - (CurrentCpuIdle * 100) /
> > > NumberOfProcessors
> > >             dbIdleTime = 100.0 - dbIdleTime * 100.0 /
> > > (double)SysBaseInfo.bKeNumberProcessors + 0.5;
> > >
> > >             //printf("\b\b\b\b%3d%",(UINT)dbIdleTime);
> > >          //printf ("Usage : ",(UINT)dbIdleTime);
> > >         }
> > >
> > >         // store new CPU's idle and system time
> > >         liOldIdleTime = SysPerfInfo.liIdleTime;
> > >         liOldSystemTime = SysTimeInfo.liKeSystemTime;
> > >         x++;
> > >     }
> > >    return (UINT)dbIdleTime;
> > > }
> >
>
> --------------------------------------------------------------------------
> > --
> > > -------------------------
> > >
> > > so please be so nice and help me out..
> > >
> > > when i compile this script typing "dmc -mn -WD cpuusage2"
> > > all seems to be right, than the optlink compiler starts and prints the
> > > following:
> >
>
> --------------------------------------------------------------------------
> > --
> > > -------------------------
> > > C:\dm\bin>dmc -mn -WD cpuusage
> > > link cpuusage,,,,cpuusage/noi;
> > > OPTLINK (R) for Win32  Release 7.50B1
> > > Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
> > >
> > > cpuusage.obj(cpuusage)
> > >  Error 42: Symbol Undefined _GetProcAddress@8
> > > cpuusage.obj(cpuusage)
> > >  Error 42: Symbol Undefined _GetModuleHandleA@4
> > > C:\dm\bin\..\lib\SNN.lib(isctype)
> > >  Error 42: Symbol Undefined _GetStringTypeA@20
> > > C:\dm\bin\..\lib\SNN.lib(tolower)
> > >  Error 42: Symbol Undefined _LCMapStringA@24
> > > C:\dm\bin\..\lib\SNN.lib(MBTOWC)
> > >  Error 42: Symbol Undefined _MultiByteToWideChar@24
> > > C:\dm\bin\..\lib\SNN.lib(thsup)
> > >  Error 42: Symbol Undefined _GetCurrentThreadId@0
> > > C:\dm\bin\..\lib\SNN.lib(semlock)
> > >  Error 42: Symbol Undefined _CreateSemaphoreA@16
> > > C:\dm\bin\..\lib\SNN.lib(semlock)
> > >  Error 42: Symbol Undefined _ReleaseSemaphore@12
> > > C:\dm\bin\..\lib\SNN.lib(semlock)
> > >  Error 42: Symbol Undefined _WaitForSingleObject@8
> > > C:\dm\bin\..\lib\SNN.lib(except)
> > >  Error 42: Symbol Undefined _SetUnhandledExceptionFilter@4
> > > C:\dm\bin\..\lib\SNN.lib(signal)
> > >  Error 42: Symbol Undefined _SetConsoleCtrlHandler@8
> > > C:\dm\bin\..\lib\SNN.lib(ehsup)
> > >  Error 42: Symbol Undefined _RtlUnwind@16
> > > C:\dm\bin\..\lib\SNN.lib(rtti)
> > >  Error 42: Symbol Undefined _RaiseException@16
> > > C:\dm\bin\..\lib\SNN.lib(cinit)
> > >  Error 42: Symbol Undefined _GetEnvironmentStrings@0
> > > C:\dm\bin\..\lib\SNN.lib(cinit)
> > >  Error 42: Symbol Undefined _GetVersion@0
> > > C:\dm\bin\..\lib\SNN.lib(cinit)
> > >  Error 42: Symbol Undefined _FreeEnvironmentStringsA@4
> > > C:\dm\bin\..\lib\SNN.lib(sbrk)
> > >  Error 42: Symbol Undefined _VirtualFree@12
> > > C:\dm\bin\..\lib\SNN.lib(sbrk)
> > >  Error 42: Symbol Undefined _VirtualAlloc@16
> > > C:\dm\bin\..\lib\SNN.lib(_exit)
> > >  Error 42: Symbol Undefined _ExitProcess@4
> > > C:\dm\bin\..\lib\SNN.lib(setnterr)
> > >  Error 42: Symbol Undefined _GetLastError@0
> > > C:\dm\bin\..\lib\SNN.lib(w32fater)
> > >  Error 42: Symbol Undefined _GetStdHandle@4
> > > C:\dm\bin\..\lib\SNN.lib(w32fater)
> > >  Error 42: Symbol Undefined _WriteConsoleA@20
> > >
> > > --- errorlevel 22
> >
>
> --------------------------------------------------------------------------
> > --
> > > -------------------------
> > >
> > > so.. any ideas on this??
> > > what have i done wrong??
> > >
> > > regards,
> > > tobias wölki
> > >
> > > -----------------------------------------------------
> > > http://www.klangwerk.de
> > > http://www.paraphonatic.de
> > > http://www.tomcloud.de
> > > mobile://+49.(0).172.5223442
> > >
> > > ACHTUNG NEU :
> > > Die Foren vom Klangwerk:
> > > http://forum.klangwerk.de
> > > http://www.hardcorebase.de
> > > Einfach mal reinschauen und mitquatschen!!
> > >
> > > EXTREM GEIL:
> > > Besucht unseren neuen Shop..
> > > http://www.equisto.de/klangwerk
> > > -----------------------------------------------------
> > >
> > >
> >
> >
>
>

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