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source: vbox/trunk/src/VBox/Runtime/r3/win/mempage-native-win.cpp@ 103795

Last change on this file since 103795 was 101162, checked in by vboxsync, 15 months ago

IPRT/mem: Use mempage /w heap code everwhere all the time. bugref:10370

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File size: 3.6 KB
Line 
1/* $Id: mempage-native-win.cpp 101162 2023-09-18 20:03:52Z vboxsync $ */
2/** @file
3 * IPRT - rtMemPageNative*, Windows implementation.
4 */
5
6/*
7 * Copyright (C) 2023 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 <iprt/win/windows.h>
42
43#include "internal/iprt.h"
44#include <iprt/mem.h>
45
46#include <iprt/assert.h>
47#include <iprt/errcore.h>
48#include <iprt/param.h>
49#include <iprt/string.h>
50#include "internal/mem.h"
51
52
53
54DECLHIDDEN(int) rtMemPageNativeAlloc(size_t cb, uint32_t fFlags, void **ppvRet)
55{
56 void *pv = VirtualAlloc(NULL, cb, MEM_COMMIT,
57 !(fFlags & RTMEMPAGEALLOC_F_EXECUTABLE) ? PAGE_READWRITE : PAGE_EXECUTE_READWRITE);
58 *ppvRet = pv;
59 if (RT_LIKELY(pv != NULL))
60 return VINF_SUCCESS;
61 return RTErrConvertFromWin32(GetLastError());
62}
63
64
65DECLHIDDEN(int) rtMemPageNativeFree(void *pv, size_t cb)
66{
67 if (RT_LIKELY(VirtualFree(pv, 0, MEM_RELEASE)))
68 return VINF_SUCCESS;
69 int rc = RTErrConvertFromWin32(GetLastError());
70 AssertMsgFailed(("rc=%d pv=%p cb=%#zx lasterr=%u\n", rc, pv, cb, GetLastError()));
71 RT_NOREF(cb);
72 return rc;
73}
74
75
76DECLHIDDEN(uint32_t) rtMemPageNativeApplyFlags(void *pv, size_t cb, uint32_t fFlags)
77{
78 uint32_t fRet = 0;
79
80 if (fFlags & RTMEMPAGEALLOC_F_ADVISE_LOCKED)
81 {
82 /** @todo check why we get ERROR_WORKING_SET_QUOTA here. */
83 BOOL const fOkay = VirtualLock(pv, cb);
84 AssertMsg(fOkay || GetLastError() == ERROR_WORKING_SET_QUOTA, ("pv=%p cb=%d lasterr=%d\n", pv, cb, GetLastError()));
85 if (fOkay)
86 fRet |= RTMEMPAGEALLOC_F_ADVISE_LOCKED;
87 }
88
89 /** @todo Any way to apply RTMEMPAGEALLOC_F_ADVISE_NO_DUMP on windows? */
90
91 return fRet;
92}
93
94
95DECLHIDDEN(void) rtMemPageNativeRevertFlags(void *pv, size_t cb, uint32_t fFlags)
96{
97 if (fFlags & RTMEMPAGEALLOC_F_ADVISE_LOCKED)
98 {
99 /** @todo check why we get ERROR_NOT_LOCKED here... */
100 BOOL const fOkay = VirtualUnlock(pv, cb);
101 AssertMsg(fOkay || GetLastError() == ERROR_NOT_LOCKED, ("pv=%p cb=%d lasterr=%d\n", pv, cb, GetLastError()));
102 RT_NOREF(fOkay);
103 }
104}
105
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