Sample Code
Windows Driver Samples/ Windows Filtering Platform Sample/ C++/ lib/ HelperFunctions_Macros.h/
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All Rights Reserved.//// Module Name:// HelperFunctions_Macros.h//// Abstract:// This module contains definitions for the various macros used throughout this program.//// Author:// Dusty Harper (DHarper)//// Revision History://// [ Month ][Day] [Year] - [Revision]-[ Comments ]// May 01, 2010 - 1.0 - Creation//////////////////////////////////////////////////////////////////////////////////////////////////////#ifndef HELPERFUNCTIONS_MACROS_H#define HELPERFUNCTIONS_MACROS_H#include <Windows.h> /// Include\UM#include <WInternl.h> /// Include\UM#include <StdLib.h> /// Inc\CRT#include <PsAPI.h> /// Include\UM#include <TlHelp32.h> /// Include\UM#include <FWPSU.h> /// Include\UM#include <FWPMU.h> /// Include\UM#include <NTDDNDIS.h> /// Include\Shared#include <WinSock2.h> /// Include\UM#include <WS2TCPIP.h> /// Include\UM#include <MSTCPIP.h> /// Include\Shared#include <IPHlpAPI.h> /// Include\Shared#include <StrSafe.h> /// Include\Shared#include <IntSafe.h> /// Include\Shared#include "WFPSamplerRPC.h" /// $(OBJ_PATH)\..\idl\$(O)#include "Identifiers.h" /// ..\inc#include "WFPArrays.h" /// ..\inc#include "ScenarioData.h" /// ..\inc/// <FORWARD_DECLARATIONS>VOID HlprLogError(_In_ PCWSTR pMessage, ...);/// </FORWARD_DECLARATIONS>/** @macro="HLPR_CLOSE_HANDLE" Purpose: Close a standard handle and set to 0. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_CLOSE_HANDLE(handle) \ if(handle) \ { \ CloseHandle(handle); \ handle = 0; \ }/** @macro="HLPR_CLOSE_SERVICE_HANDLE" Purpose: Close a service handle and set to 0. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_CLOSE_SERVICE_HANDLE(handle) \ if(handle) \ { \ CloseServiceHandle(handle); \ handle = 0; \ }/** @macro="HLPR_DELETE" Purpose: Free memory allocated with new and set the pointer to 0. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_DELETE(pPtr) \ if(pPtr) \ { \ delete pPtr; \ pPtr = 0; \ }/** @macro="HLPR_DELETE_ARRAY" Purpose: Free memory allocated with new[] and set the pointer to 0. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_DELETE_ARRAY(pPtr) \ if(pPtr) \ { \ delete[] pPtr; \ pPtr = 0; \ }/** @macro="HLPR_NEW" Purpose: Allocate memory with new and zero out its contents. <br> <br> Notes: Caller responsible for freeing allocated memory using macro HLPR_DELETE. <br> <br> MSDN_Ref: <br>*/#define HLPR_NEW(pPtr, object) \ do \ { \ HLPR_DELETE(pPtr); \ pPtr = new object; \ if(pPtr) \ SecureZeroMemory(pPtr, \ sizeof(object)); \ }while(pPtr == 0)/** @macro="HLPR_NEW_ARRAY" Purpose: Allocate memory with new[] and zero out its contents. <br> <br> Notes: Caller responsible for freeing allocated memory using macro HLPR_DELETE_ARRAY. <br> <br> MSDN_Ref: <br>*/#define HLPR_NEW_ARRAY(pPtr, object, count) \ do \ { \ size_t SAFE_SIZE = 0; \ HLPR_DELETE_ARRAY(pPtr); \ if(SizeTMult(sizeof(object), \ (size_t)count, \ &SAFE_SIZE) == S_OK && \ SAFE_SIZE >= (sizeof(object) * count)) \ { \ pPtr = new object[count]; \ if(pPtr) \ SecureZeroMemory(pPtr, \ SAFE_SIZE); \ } \ else \ { \ HlprLogError(L"[count: %d][objectSize: %d]", \ count, \ sizeof(object)); \ break; \ } \ }while(pPtr == 0)/** @macro="HLPR_NEW_CASTED_ARRAY" Purpose: Allocate memory with new[] while casting the pointer, and zero out its contents. <br> <br> Notes: Caller responsible for freeing allocated memory using macro HLPR_DELETE_ARRAY. <br> <br> MSDN_Ref: <br>*/#define HLPR_NEW_CASTED_ARRAY(pPtr, CAST_TYPE, object, count) \ do \ { \ size_t SAFE_SIZE = 0; \ HLPR_DELETE_ARRAY(pPtr); \ if(SizeTMult(sizeof(object), \ (size_t)count, \ &SAFE_SIZE) == S_OK && \ SAFE_SIZE >= (sizeof(object) * count)) \ { \ pPtr = (CAST_TYPE*)(new object[count]); \ if(pPtr) \ SecureZeroMemory(pPtr, \ SAFE_SIZE); \ } \ else \ { \ HlprLogError(L"[count: %d][objectSize: %d]", \ count, \ sizeof(object)); \ break; \ } \ }while(pPtr == 0)/** @macro="HLPR_BAIL_LABEL" Purpose: Tag for the cleanup and exit portion of the function. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_LABEL \ cleanup/* @macro="HLPR_BAIL_LABEL_2" Purpose: Tag for the cleanup and exit portion of the function. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_LABEL_2 \ cleanup_2/** @macro="HLPR_BAIL_ON_FAILURE_WITH_LABEL" Purpose: Jump in the code's execution to the provided tag if an error occurs. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_ON_FAILURE_WITH_LABEL(status, label) \ if(status != NO_ERROR) \ goto label/** @macro="HLPR_BAIL_ON_FAILURE" Purpose: Jump in the code's execution path to the HLPR_BAIL_LABEL tag if an error occurs. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_ON_FAILURE(status) \ HLPR_BAIL_ON_FAILURE_WITH_LABEL(status, \ HLPR_BAIL_LABEL)/** @macro="HLPR_BAIL_ON_FAILURE_2" Purpose: Jump in the code's execution path to the HLPR_BAIL_LABEL_2 tag if an error occurs. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_ON_FAILURE_2(status) \ HLPR_BAIL_ON_FAILURE_WITH_LABEL(status, \ HLPR_BAIL_LABEL_2)/** @macro="HLPR_BAIL_ON_ALLOC_FAILURE_WITH_LABEL" Purpose: Jump in the code's execution path to the provided tag if memory allocation fails. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_ON_ALLOC_FAILURE_WITH_LABEL(pPtr, status, label) \ if(pPtr == 0) \ { \ status = ERROR_OUTOFMEMORY; \ HlprLogError(L"Allocation Failure [status: %#x]", status); \ goto label; \ }/** @macro="HLPR_BAIL_ON_ALLOC_FAILURE" Purpose: Jump in the code's execution path to the HLPR_BAIL_LABEL tag if memory allocation fails. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_ON_ALLOC_FAILURE(pPtr, status) \ HLPR_BAIL_ON_ALLOC_FAILURE_WITH_LABEL(pPtr, \ status, \ HLPR_BAIL_LABEL)/** @macro="HLPR_BAIL_ON_ALLOC_FAILURE_2" Purpose: Jump in the code's execution path to the HLPR_BAIL_LABEL_2 tag if memory allocation fails. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_ON_ALLOC_FAILURE_2(pPtr, status) \ HLPR_BAIL_ON_ALLOC_FAILURE_WITH_LABEL(pPtr, \ status, \ HLPR_BAIL_LABEL_2)/** @macro="HLPR_BAIL_ON_NULL_POINTER" Purpose: Jump in the code's execution path to the HLPR_BAIL_LABEL tag if the pointer is NULL. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_ON_NULL_POINTER(pPtr) \ if(pPtr == 0) \ HLPR_BAIL/** @macro="HLPR_BAIL_ON_NULL_POINTER_2" Purpose: Jump in the code's execution path to the HLPR_BAIL_LABEL_2 tag if the pointer is NULL. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_ON_NULL_POINTER_2(pPtr) \ if(pPtr == 0) \ HLPR_BAIL_2/** @macro="HLPR_BAIL_ON_NULL_POINTER_WITH_STATUS" Purpose: Jump in the code's execution path to the HLPR_BAIL_LABEL tag if the pointer is NULL. <br> <br> Notes: Status is set to ERROR_OUTOFMEMORY. <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_ON_NULL_POINTER_WITH_STATUS(pPtr, status) \ if(pPtr == 0) \ { \ status = ERROR_OUTOFMEMORY; \ HLPR_BAIL; \ }/** @macro="HLPR_BAIL_ON_NULL_POINTER_WITH_STATUS_2" Purpose: Jump in the code's execution path to the HLPR_BAIL_LABEL_2 tag if the pointer is NULL. <br> <br> Notes: Status is set to ERROR_OUTOFMEMORY. <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_ON_NULL_POINTER_WITH_STATUS_2(pPtr, status) \ if(pPtr == 0) \ { \ status = ERROR_OUTOFMEMORY; \ HLPR_BAIL_2; \ }/** @macro="HLPR_BAIL_WITH_LABEL" Purpose: Jump in the code's execution path to the provided tag. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_WITH_LABEL(label) \ goto label/** @macro="HLPR_BAIL" Purpose: Jump in the code's execution path to the HLPR_BAIL_LABEL tag. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL \ HLPR_BAIL_WITH_LABEL(HLPR_BAIL_LABEL)/** @macro="HLPR_BAIL_2" Purpose: Jump in the code's execution path to the HLPR_BAIL_LABEL_2 tag. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/#define HLPR_BAIL_2 \ HLPR_BAIL_WITH_LABEL(HLPR_BAIL_LABEL_2)#endif /// HELPERFUNCTIONS_MACROS_H |
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