398 lines
11 KiB
C++
398 lines
11 KiB
C++
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/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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Copyright (c) 2000 Microsoft Corporation
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Module Name :
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pointer.cxx
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Abstract :
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This file contains the routines for handling pointers and pointer
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layouts.
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Author :
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Mike Zoran mzoran January 2000.
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Revision History :
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---------------------------------------------------------------------*/
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#include "precomp.hxx"
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#if !defined(DBG)
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// Optimize for time to force inlining.
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#pragma optimize("gt", on)
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#endif
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typedef enum
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{
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NDR64_CORRELATION_NONE=0,
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NDR64_CORRELATION_MEMORY=1,
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NDR64_CORRELATION_BUFFER=2
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} NDR64_CORRELATION_TYPE;
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template<class Function>
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static __forceinline void
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Ndr64pProcessPointerLayout(
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PMIDL_STUB_MESSAGE pStubMsg,
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PNDR64_FORMAT pLayoutFormat,
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NDR64_UINT32 ArrayIterations,
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uchar * pMemory,
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uchar * pBuffer,
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const NDR64_CORRELATION_TYPE CorrType,
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Function func )
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/*++
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Routine Description :
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Marshalls an array's or a structure's embedded pointers.
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Arguments :
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pStubMsg - Pointer to the stub message.
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pFormat - The format string pointer layout.
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ArrayIterations - Numbers of iterations for variable sized arrays.
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pMemory - Pointer to the structure or array whose embedded pointers
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are being marshalled.
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pBuffer - Pointer to the buffer for the structure or arrays
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CorrType - Determines how to set pCorrMemory.
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func - Function to call to do the processing
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Return :
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Format string pointer after the pointer layout.
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--*/
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{
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PFORMAT_STRING pFormat = (PFORMAT_STRING)pLayoutFormat;
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for (;;)
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{
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const NDR64_REPEAT_FORMAT *pRepeatFormat;
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NDR64_UINT32 Iterations;
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switch( *pFormat )
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{
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case FC64_NO_REPEAT:
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{
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const NDR64_NO_REPEAT_FORMAT *pNoRepeatHeader =
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(NDR64_NO_REPEAT_FORMAT*)pFormat;
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const NDR64_POINTER_INSTANCE_HEADER_FORMAT *pPointerInstance =
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(NDR64_POINTER_INSTANCE_HEADER_FORMAT *)(pNoRepeatHeader + 1);
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const NDR64_POINTER_FORMAT *pPointerFormat =
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(NDR64_POINTER_FORMAT*)(pPointerInstance + 1);
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uchar *pMemPtr = pMemory + pPointerInstance->Offset;
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uchar *pBufPtr = pBuffer + pPointerInstance->Offset;
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func( pStubMsg,
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pMemPtr,
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pBufPtr ,
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pPointerFormat );
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pFormat += sizeof(NDR64_NO_REPEAT_FORMAT) +
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sizeof(NDR64_POINTER_INSTANCE_HEADER_FORMAT) +
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sizeof(NDR64_POINTER_FORMAT);
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break;
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}
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case FC64_FIXED_REPEAT:
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Iterations = ((NDR64_FIXED_REPEAT_FORMAT*)pFormat)->Iterations;
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pRepeatFormat = (NDR64_REPEAT_FORMAT*)pFormat;
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pFormat += sizeof(NDR64_FIXED_REPEAT_FORMAT);
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goto RepeatCommon;
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case FC64_VARIABLE_REPEAT:
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Iterations = ArrayIterations;
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pRepeatFormat = (NDR64_REPEAT_FORMAT*)pFormat;
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pFormat += sizeof(NDR64_REPEAT_FORMAT);
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// Fall through to Repeat Common
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RepeatCommon:
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{
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uchar *pArrayMemory = pMemory + pRepeatFormat->OffsetToArray;
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uchar *pArrayBuffer = pBuffer + pRepeatFormat->OffsetToArray;
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PFORMAT_STRING pFormatSave = pFormat;
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uchar *pCorrMemorySave;
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if ( CorrType )
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pCorrMemorySave = pStubMsg->pCorrMemory;
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{
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// Loop over the array elements
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for( ; Iterations;
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Iterations--,
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pArrayMemory += pRepeatFormat->Increment,
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pArrayBuffer += pRepeatFormat->Increment)
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{
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pFormat = pFormatSave;
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if ( CorrType )
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{
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if ( CorrType == NDR64_CORRELATION_MEMORY )
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{
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if (pRepeatFormat->Flags.SetCorrMark)
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pStubMsg->pCorrMemory = pArrayMemory;
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}
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else
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{
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if (pRepeatFormat->Flags.SetCorrMark)
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pStubMsg->pCorrMemory = pArrayBuffer;
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}
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}
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// Loop over the pointers per element
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for ( NDR64_UINT32 Pointers = pRepeatFormat->NumberOfPointers;
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Pointers; Pointers-- )
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{
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const NDR64_POINTER_INSTANCE_HEADER_FORMAT *pPointerInstance =
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(NDR64_POINTER_INSTANCE_HEADER_FORMAT *)pFormat;
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const NDR64_POINTER_FORMAT *pPointerFormat =
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(NDR64_POINTER_FORMAT*)(pPointerInstance + 1);
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uchar *pMemPtr = pArrayMemory + pPointerInstance->Offset;
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uchar *pBufPtr = pArrayBuffer + pPointerInstance->Offset;
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func( pStubMsg,
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pMemPtr,
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pBufPtr,
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pPointerFormat );
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pFormat += sizeof(NDR64_POINTER_INSTANCE_HEADER_FORMAT) +
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sizeof(NDR64_POINTER_FORMAT);
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}
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}
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}
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if ( CorrType )
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pStubMsg->pCorrMemory = pCorrMemorySave;
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}
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case FC64_END:
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return;
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default :
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NDR_ASSERT(0,"Ndr64pProcessPointerLayout : bad format char");
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RpcRaiseException( RPC_S_INTERNAL_ERROR );
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} // switch
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}
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}
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static __forceinline void
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Ndr64pPointerLayoutMarshallCallback(
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PMIDL_STUB_MESSAGE pStubMsg,
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uchar* pMemPtr,
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uchar* pBufPtr,
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PNDR64_FORMAT pFormat )
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{
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Ndr64pPointerMarshall
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( pStubMsg,
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(NDR64_PTR_WIRE_TYPE*)pBufPtr,
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*(uchar**)pMemPtr,
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(PFORMAT_STRING)pFormat );
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}
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void
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Ndr64pPointerLayoutMarshall(
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PMIDL_STUB_MESSAGE pStubMsg,
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PNDR64_FORMAT pFormat,
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NDR64_UINT32 ArrayIterations,
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uchar * pMemory,
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uchar * pBuffer )
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{
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POINTER_BUFFER_SWAP_CONTEXT SwapContext( pStubMsg );
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Ndr64pProcessPointerLayout(
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pStubMsg,
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pFormat,
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ArrayIterations,
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pMemory,
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pBuffer,
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NDR64_CORRELATION_MEMORY,
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Ndr64pPointerLayoutMarshallCallback);
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}
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static __forceinline void
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Ndr64pPointerLayoutUnmarshallCallback(
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PMIDL_STUB_MESSAGE pStubMsg,
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uchar* pMemPtr,
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uchar* pBufPtr,
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PNDR64_FORMAT pFormat )
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{
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Ndr64pPointerUnmarshall(
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pStubMsg,
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*(NDR64_PTR_WIRE_TYPE*)pBufPtr,
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(uchar **)pMemPtr,
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*(uchar**)pMemPtr,
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pFormat );
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// Need to copy the value written to the memory pointer back to
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// the buffer pointer since the buffer will be block copied to the memory.
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*(uchar **)pBufPtr = *(uchar **)pMemPtr;
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}
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void
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Ndr64pPointerLayoutUnmarshall(
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PMIDL_STUB_MESSAGE pStubMsg,
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PNDR64_FORMAT pFormat,
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NDR64_UINT32 ArrayIterations,
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uchar * pMemory,
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uchar * pBuffer )
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{
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POINTER_BUFFER_SWAP_CONTEXT SwapContext( pStubMsg );
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uchar *pBufferSave = 0;
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// Insert full pointer to ref id translation if needed.
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if ( pStubMsg->FullPtrRefId )
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FULL_POINTER_INSERT( pStubMsg, pMemory );
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Ndr64pProcessPointerLayout(
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pStubMsg,
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pFormat,
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ArrayIterations,
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pMemory,
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pBuffer,
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NDR64_CORRELATION_BUFFER,
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Ndr64pPointerLayoutUnmarshallCallback);
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}
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static __forceinline void
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Ndr64pPointerLayoutMemorySizeCallback(
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PMIDL_STUB_MESSAGE pStubMsg,
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uchar* pMemPtr,
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uchar* pBufPtr,
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PNDR64_FORMAT pFormat )
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{
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// Discard the pMemPtr
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Ndr64pPointerMemorySize(
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pStubMsg,
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(NDR64_PTR_WIRE_TYPE*)pBufPtr,
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pFormat );
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}
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void
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Ndr64pPointerLayoutMemorySize (
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PMIDL_STUB_MESSAGE pStubMsg,
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PNDR64_FORMAT pFormat,
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NDR64_UINT32 ArrayIterations,
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uchar * pBuffer )
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{
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if ( pStubMsg->IgnoreEmbeddedPointers )
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return;
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POINTER_MEMSIZE_SWAP_CONTEXT SwapContext( pStubMsg );
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Ndr64pProcessPointerLayout(
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pStubMsg,
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pFormat,
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ArrayIterations,
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pBuffer,
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pBuffer,
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NDR64_CORRELATION_NONE,
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Ndr64pPointerLayoutMemorySizeCallback );
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}
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static __forceinline void
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Ndr64pPointerLayoutBufferSizeCallback(
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PMIDL_STUB_MESSAGE pStubMsg,
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uchar* pMemPtr,
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uchar* pBufPtr,
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PNDR64_FORMAT pFormat )
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{
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// Discard the BufferPointer
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Ndr64pPointerBufferSize(
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pStubMsg,
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*(uchar**)pMemPtr,
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pFormat );
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}
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void
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Ndr64pPointerLayoutBufferSize (
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PMIDL_STUB_MESSAGE pStubMsg,
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PNDR64_FORMAT pFormat,
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NDR64_UINT32 ArrayIterations,
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uchar * pMemory )
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{
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if ( pStubMsg->IgnoreEmbeddedPointers )
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return;
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POINTER_BUFFERLENGTH_SWAP_CONTEXT SwapContext( pStubMsg );
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Ndr64pProcessPointerLayout(
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pStubMsg,
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pFormat,
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ArrayIterations,
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pMemory,
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pMemory,
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NDR64_CORRELATION_MEMORY,
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Ndr64pPointerLayoutBufferSizeCallback );
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}
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static __forceinline void
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Ndr64pPointerLayoutFreeCallback(
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PMIDL_STUB_MESSAGE pStubMsg,
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uchar* pMemPtr,
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uchar* pBufPtr,
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PNDR64_FORMAT pFormat )
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{
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Ndr64PointerFree(
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pStubMsg,
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*(uchar**)pMemPtr,
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pFormat );
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}
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void
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Ndr64pPointerLayoutFree(
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PMIDL_STUB_MESSAGE pStubMsg,
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PNDR64_FORMAT pFormat,
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NDR64_UINT32 ArrayIterations,
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uchar * pMemory )
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{
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Ndr64pProcessPointerLayout(
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pStubMsg,
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pFormat,
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ArrayIterations,
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pMemory,
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pMemory,
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NDR64_CORRELATION_MEMORY,
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Ndr64pPointerLayoutFreeCallback );
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}
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