VirtualBox

source: vbox/trunk/src/VBox/Runtime/alloc.cpp@ 4860

Last change on this file since 4860 was 4071, checked in by vboxsync, 17 years ago

Biggest check-in ever. New source code headers for all (C) innotek files.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.9 KB
Line 
1/* $Id: alloc.cpp 4071 2007-08-07 17:07:59Z vboxsync $ */
2/** @file
3 * innotek Portable Runtime - Memory Allocation.
4 */
5
6/*
7 * Copyright (C) 2006-2007 innotek GmbH
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 as published by the Free Software Foundation,
13 * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14 * distribution. VirtualBox OSE is distributed in the hope that it will
15 * be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18
19/*******************************************************************************
20* Header Files *
21*******************************************************************************/
22#include <iprt/alloc.h>
23#include <iprt/assert.h>
24#include <iprt/string.h>
25
26
27/**
28 * Duplicates a chunk of memory into a new heap block.
29 *
30 * @returns New heap block with the duplicate data.
31 * @returns NULL if we're out of memory.
32 * @param pvSrc The memory to duplicate.
33 * @param cb The amount of memory to duplicate.
34 */
35RTDECL(void *) RTMemDup(const void *pvSrc, size_t cb)
36{
37 void *pvDst = RTMemAlloc(cb);
38 if (pvDst)
39 memcpy(pvDst, pvSrc, cb);
40 return pvDst;
41}
42
43
44/**
45 * Duplicates a chunk of memory into a new heap block with some
46 * additional zeroed memory.
47 *
48 * @returns New heap block with the duplicate data.
49 * @returns NULL if we're out of memory.
50 * @param pvSrc The memory to duplicate.
51 * @param cbSrc The amount of memory to duplicate.
52 * @param cbExtra The amount of extra memory to allocate and zero.
53 */
54RTDECL(void *) RTMemDupEx(const void *pvSrc, size_t cbSrc, size_t cbExtra)
55{
56 void *pvDst = RTMemAlloc(cbSrc + cbExtra);
57 if (pvDst)
58 {
59 memcpy(pvDst, pvSrc, cbSrc);
60 memset((uint8_t *)pvDst + cbSrc, 0, cbExtra);
61 }
62 return pvDst;
63}
64
65
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