VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/allocex.h@ 78229

Last change on this file since 78229 was 76585, checked in by vboxsync, 6 years ago

*: scm --fix-header-guard-endif

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.9 KB
Line 
1/* $Id: allocex.h 76585 2019-01-01 06:31:29Z vboxsync $ */
2/** @file
3 * IPRT - Memory Allocation, Extended Alloc and Free Functions for Ring-3.
4 */
5
6/*
7 * Copyright (C) 2006-2019 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 */
38typedef 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. */
50typedef 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 */
62DECLHIDDEN(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 */
73DECLHIDDEN(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 */
83DECLHIDDEN(void) rtMemFreeExYyBitReach(void *pv, size_t cb, uint32_t fFlags);
84
85#endif /* !IPRT_INCLUDED_SRC_r3_allocex_h */
86
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