VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/mempage-direct.cpp

Last change on this file was 106061, checked in by vboxsync, 3 months ago

Copyright year updates by scm.

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1/* $Id: mempage-direct.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2/** @file
3 * IPRT - RTMemPage*, Minimal version w/o hea.
4 */
5
6/*
7 * Copyright (C) 2006-2024 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#include "internal/iprt.h"
42#include <iprt/mem.h>
43
44#include <iprt/assert.h>
45#include <iprt/errcore.h>
46#include <iprt/param.h>
47#include <iprt/string.h>
48#include <iprt/system.h>
49#include "internal/mem.h"
50
51
52RTDECL(void *) RTMemPageAllocTag(size_t cb, const char *pszTag) RT_NO_THROW_DEF
53{
54 return RTMemPageAllocExTag(cb, 0, pszTag);
55}
56
57
58RTDECL(void *) RTMemPageAllocZTag(size_t cb, const char *pszTag) RT_NO_THROW_DEF
59{
60 return RTMemPageAllocExTag(cb, RTMEMPAGEALLOC_F_ZERO, pszTag);
61}
62
63
64RTDECL(void *) RTMemPageAllocExTag(size_t cb, uint32_t fFlags, const char *pszTag) RT_NO_THROW_DEF
65{
66 AssertReturn(!(fFlags & ~RTMEMPAGEALLOC_F_VALID_MASK), NULL);
67 cb = RTSystemPageAlignSize(cb);
68
69 void *pv = NULL;
70 int rc = rtMemPageNativeAlloc(cb, fFlags, &pv);
71 if (RT_SUCCESS(rc))
72 {
73 if (fFlags & RTMEMPAGEALLOC_F_ZERO)
74 RT_BZERO(pv, cb);
75 if (fFlags & (RTMEMPAGEALLOC_F_ADVISE_LOCKED | RTMEMPAGEALLOC_F_ADVISE_NO_DUMP))
76 rtMemPageNativeApplyFlags(pv, cb, fFlags);
77 return pv;
78 }
79 RT_NOREF(pszTag);
80 return NULL;
81}
82
83
84RTDECL(void) RTMemPageFree(void *pv, size_t cb) RT_NO_THROW_DEF
85{
86 if (pv)
87 {
88 AssertPtr(pv);
89 Assert(!((uintptr_t)pv & RTSystemGetPageOffsetMask()));
90 Assert(cb > 0);
91
92 cb = RTSystemPageAlignSize(cb);
93 rtMemPageNativeFree(pv, cb);
94 }
95}
96
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