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/* $Id: allocex.h $ */
/** @file
* IPRT - Memory Allocation, Extended Alloc and Free Functions for Ring-3.
*/
/*
* Copyright (C) 2006-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#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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