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/* $Id: allocex.h $ */
/** @file
* IPRT - Memory Allocation, Extended Alloc and Free Functions for Ring-3.
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef IPRT_INCLUDED_SRC_r3_allocex_h
#define IPRT_INCLUDED_SRC_r3_allocex_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/types.h>
/**
* Heading for extended memory allocations in ring-3.
*/
typedef struct RTMEMHDRR3
{
/** Magic (RTMEMHDR_MAGIC). */
uint32_t u32Magic;
/** Block flags (RTMEMALLOCEX_FLAGS_*). */
uint32_t fFlags;
/** The actual size of the block, header not included. */
uint32_t cb;
/** The requested allocation size. */
uint32_t cbReq;
} RTMEMHDRR3;
/** Pointer to a ring-3 extended memory header. */
typedef RTMEMHDRR3 *PRTMEMHDRR3;
/**
* Allocate memory in below 64KB.
*
* @returns IPRT status code.
* @param cbAlloc Number of bytes to allocate (including the
* header if the caller needs one).
* @param fFlags Allocation flags.
* @param ppv Where to return the pointer to the memory.
*/
DECLHIDDEN(int) rtMemAllocEx16BitReach(size_t cbAlloc, uint32_t fFlags, void **ppv);
/**
* Allocate memory in below 4GB.
*
* @returns IPRT status code.
* @param cbAlloc Number of bytes to allocate (including the
* header if the caller needs one).
* @param fFlags Allocation flags.
* @param ppv Where to return the pointer to the memory.
*/
DECLHIDDEN(int) rtMemAllocEx32BitReach(size_t cbAlloc, uint32_t fFlags, void **ppv);
/**
* Frees memory allocated by rtMemAllocEx16BitReach and rtMemAllocEx32BitReach.
*
* @param pv Start of allocation.
* @param cb Allocation size.
* @param fFlags Allocation flags.
*/
DECLHIDDEN(void) rtMemFreeExYyBitReach(void *pv, size_t cb, uint32_t fFlags);
#endif /* !IPRT_INCLUDED_SRC_r3_allocex_h */
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