149 lines
3 KiB
C++
149 lines
3 KiB
C++
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/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name :
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isplat.cxx
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Abstract:
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This module defines functions for determining platform types
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Author:
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Johnson Apacible (johnsona) 19-Nov-1996
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Murali Krishnan (MuraliK) 17-Apr-1997
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Added CriticalSectionWith SpinCount stuff (moved to locks.cxx)
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--*/
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#include "precomp.hxx"
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#include <inetsvcs.h>
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#define DLL_IMPLEMENTATION
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#define IMPLEMENTATION_EXPORT
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#include <locks.h>
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typedef
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BOOLEAN
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(NTAPI *GET_PRODUCT_TYPE)(
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PNT_PRODUCT_TYPE
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);
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extern "C"
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PLATFORM_TYPE
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IISGetPlatformType(
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VOID
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)
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/*++
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This function consults the registry and determines the platform type
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for this machine.
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Arguments:
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None
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Returns:
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Platform type
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--*/
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{
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PLATFORM_TYPE pt;
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LONG result;
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HKEY keyHandle;
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WCHAR productType[30];
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DWORD type;
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BOOL isNt = TRUE;
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OSVERSIONINFO osInfo;
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//
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// See if the platform type has already been discovered.
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//
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if ( g_PlatformType != PtInvalid ) {
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return(g_PlatformType);
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}
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//
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// see if this is win95
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//
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osInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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if ( GetVersionEx( &osInfo ) ) {
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isNt = (osInfo.dwPlatformId == VER_PLATFORM_WIN32_NT);
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} else {
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IIS_PRINTF((buff,"GetVersionEx failed with %d\n",
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GetLastError()));
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}
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if ( isNt ) {
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HINSTANCE hNtdll;
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NT_PRODUCT_TYPE ntType;
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GET_PRODUCT_TYPE pfnGetProductType;
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//
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// Get the product type from the system
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//
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pt = PtNtWorkstation;
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hNtdll = LoadLibrary("ntdll.dll");
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if ( hNtdll != NULL ) {
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pfnGetProductType = (GET_PRODUCT_TYPE)
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GetProcAddress(hNtdll, "RtlGetNtProductType");
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if ( (pfnGetProductType != NULL) &&
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pfnGetProductType( &ntType ) ) {
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if ( (ntType == NtProductLanManNt) ||
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(ntType == NtProductServer) ) {
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pt = PtNtServer;
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}
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}
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FreeLibrary( hNtdll );
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}
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} else {
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pt = PtWindows95;
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}
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g_PlatformType = pt;
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return(pt);
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} // IISGetPlatformType
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// Thunking wrapper for ::SetCriticalSectionSpinCount that will work on
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// systems that don't have this API in kernel32
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DWORD
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IISSetCriticalSectionSpinCount(
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LPCRITICAL_SECTION lpCriticalSection,
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DWORD dwSpinCount)
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{
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return CCritSec::SetSpinCount(lpCriticalSection, dwSpinCount);
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}
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// Thunking wrapper for ::InitializeCriticalSectionAndSpinCount that will
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// work on systems that don't have this API in kernel32. Sets the spin count
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// to the IIS default, IIS_DEFAULT_CS_SPIN_COUNT, which is defined in
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// <pudebug.h>
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VOID
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IISInitializeCriticalSection(
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LPCRITICAL_SECTION lpCriticalSection)
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{
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InitializeCriticalSection(lpCriticalSection);
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CCritSec::SetSpinCount(lpCriticalSection, IIS_DEFAULT_CS_SPIN_COUNT);
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}
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