| 1 | /* $Id: alloc.cpp 28298 2010-04-14 12:20:39Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Memory Allocation.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.215389.xyz. 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 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
|
|---|
| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
|
|---|
| 28 | * additional information or have any questions.
|
|---|
| 29 | */
|
|---|
| 30 |
|
|---|
| 31 |
|
|---|
| 32 | /*******************************************************************************
|
|---|
| 33 | * Header Files *
|
|---|
| 34 | *******************************************************************************/
|
|---|
| 35 | #include <iprt/mem.h>
|
|---|
| 36 | #include "internal/iprt.h"
|
|---|
| 37 |
|
|---|
| 38 | #include <iprt/assert.h>
|
|---|
| 39 | #include <iprt/string.h>
|
|---|
| 40 |
|
|---|
| 41 | #undef RTMemDup
|
|---|
| 42 | #undef RTMemDupEx
|
|---|
| 43 |
|
|---|
| 44 |
|
|---|
| 45 |
|
|---|
| 46 | /**
|
|---|
| 47 | * Duplicates a chunk of memory into a new heap block.
|
|---|
| 48 | *
|
|---|
| 49 | * @returns New heap block with the duplicate data.
|
|---|
| 50 | * @returns NULL if we're out of memory.
|
|---|
| 51 | * @param pvSrc The memory to duplicate.
|
|---|
| 52 | * @param cb The amount of memory to duplicate.
|
|---|
| 53 | */
|
|---|
| 54 | RTDECL(void *) RTMemDup(const void *pvSrc, size_t cb) RT_NO_THROW
|
|---|
| 55 | {
|
|---|
| 56 | void *pvDst = RTMemAlloc(cb);
|
|---|
| 57 | if (pvDst)
|
|---|
| 58 | memcpy(pvDst, pvSrc, cb);
|
|---|
| 59 | return pvDst;
|
|---|
| 60 | }
|
|---|
| 61 | RT_EXPORT_SYMBOL(RTMemDup);
|
|---|
| 62 |
|
|---|
| 63 |
|
|---|
| 64 | /**
|
|---|
| 65 | * Duplicates a chunk of memory into a new heap block with some
|
|---|
| 66 | * additional zeroed memory.
|
|---|
| 67 | *
|
|---|
| 68 | * @returns New heap block with the duplicate data.
|
|---|
| 69 | * @returns NULL if we're out of memory.
|
|---|
| 70 | * @param pvSrc The memory to duplicate.
|
|---|
| 71 | * @param cbSrc The amount of memory to duplicate.
|
|---|
| 72 | * @param cbExtra The amount of extra memory to allocate and zero.
|
|---|
| 73 | */
|
|---|
| 74 | RTDECL(void *) RTMemDupEx(const void *pvSrc, size_t cbSrc, size_t cbExtra) RT_NO_THROW
|
|---|
| 75 | {
|
|---|
| 76 | void *pvDst = RTMemAlloc(cbSrc + cbExtra);
|
|---|
| 77 | if (pvDst)
|
|---|
| 78 | {
|
|---|
| 79 | memcpy(pvDst, pvSrc, cbSrc);
|
|---|
| 80 | memset((uint8_t *)pvDst + cbSrc, 0, cbExtra);
|
|---|
| 81 | }
|
|---|
| 82 | return pvDst;
|
|---|
| 83 | }
|
|---|
| 84 | RT_EXPORT_SYMBOL(RTMemDupEx);
|
|---|
| 85 |
|
|---|
