| 1 | /* $Id: allocex.h 82968 2020-02-04 10:35:17Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Memory Allocation, Extended Alloc and Free Functions for Ring-3.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2020 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 | #ifndef IPRT_INCLUDED_SRC_r3_allocex_h
|
|---|
| 28 | #define IPRT_INCLUDED_SRC_r3_allocex_h
|
|---|
| 29 | #ifndef RT_WITHOUT_PRAGMA_ONCE
|
|---|
| 30 | # pragma once
|
|---|
| 31 | #endif
|
|---|
| 32 |
|
|---|
| 33 | #include <iprt/types.h>
|
|---|
| 34 |
|
|---|
| 35 | /**
|
|---|
| 36 | * Heading for extended memory allocations in ring-3.
|
|---|
| 37 | */
|
|---|
| 38 | typedef struct RTMEMHDRR3
|
|---|
| 39 | {
|
|---|
| 40 | /** Magic (RTMEMHDR_MAGIC). */
|
|---|
| 41 | uint32_t u32Magic;
|
|---|
| 42 | /** Block flags (RTMEMALLOCEX_FLAGS_*). */
|
|---|
| 43 | uint32_t fFlags;
|
|---|
| 44 | /** The actual size of the block, header not included. */
|
|---|
| 45 | uint32_t cb;
|
|---|
| 46 | /** The requested allocation size. */
|
|---|
| 47 | uint32_t cbReq;
|
|---|
| 48 | } RTMEMHDRR3;
|
|---|
| 49 | /** Pointer to a ring-3 extended memory header. */
|
|---|
| 50 | typedef RTMEMHDRR3 *PRTMEMHDRR3;
|
|---|
| 51 |
|
|---|
| 52 |
|
|---|
| 53 | /**
|
|---|
| 54 | * Allocate memory in below 64KB.
|
|---|
| 55 | *
|
|---|
| 56 | * @returns IPRT status code.
|
|---|
| 57 | * @param cbAlloc Number of bytes to allocate (including the
|
|---|
| 58 | * header if the caller needs one).
|
|---|
| 59 | * @param fFlags Allocation flags.
|
|---|
| 60 | * @param ppv Where to return the pointer to the memory.
|
|---|
| 61 | */
|
|---|
| 62 | DECLHIDDEN(int) rtMemAllocEx16BitReach(size_t cbAlloc, uint32_t fFlags, void **ppv);
|
|---|
| 63 |
|
|---|
| 64 | /**
|
|---|
| 65 | * Allocate memory in below 4GB.
|
|---|
| 66 | *
|
|---|
| 67 | * @returns IPRT status code.
|
|---|
| 68 | * @param cbAlloc Number of bytes to allocate (including the
|
|---|
| 69 | * header if the caller needs one).
|
|---|
| 70 | * @param fFlags Allocation flags.
|
|---|
| 71 | * @param ppv Where to return the pointer to the memory.
|
|---|
| 72 | */
|
|---|
| 73 | DECLHIDDEN(int) rtMemAllocEx32BitReach(size_t cbAlloc, uint32_t fFlags, void **ppv);
|
|---|
| 74 |
|
|---|
| 75 |
|
|---|
| 76 | /**
|
|---|
| 77 | * Frees memory allocated by rtMemAllocEx16BitReach and rtMemAllocEx32BitReach.
|
|---|
| 78 | *
|
|---|
| 79 | * @param pv Start of allocation.
|
|---|
| 80 | * @param cb Allocation size.
|
|---|
| 81 | * @param fFlags Allocation flags.
|
|---|
| 82 | */
|
|---|
| 83 | DECLHIDDEN(void) rtMemFreeExYyBitReach(void *pv, size_t cb, uint32_t fFlags);
|
|---|
| 84 |
|
|---|
| 85 | #endif /* !IPRT_INCLUDED_SRC_r3_allocex_h */
|
|---|
| 86 |
|
|---|
