| 1 | /* $Id: alloc-r0drv.h 32674 2010-09-21 16:51:50Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Memory Allocation, Ring-0 Driver.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 | #ifndef ___r0drv_alloc_r0drv_h
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| 28 | #define ___r0drv_alloc_r0drv_h
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| 29 |
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| 30 | #include <iprt/cdefs.h>
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| 31 | #include <iprt/types.h>
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| 32 | #include <iprt/mem.h>
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| 33 | #include "internal/magics.h"
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| 34 |
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| 35 | RT_C_DECLS_BEGIN
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| 36 |
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| 37 | /**
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| 38 | * Header which heading all memory blocks.
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| 39 | */
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| 40 | typedef struct RTMEMHDR
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| 41 | {
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| 42 | /** Magic (RTMEMHDR_MAGIC). */
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| 43 | uint32_t u32Magic;
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| 44 | /** Block flags (RTMEMHDR_FLAG_*). */
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| 45 | uint32_t fFlags;
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| 46 | /** The actual size of the block. */
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| 47 | uint32_t cb;
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| 48 | /** The request allocation size. */
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| 49 | uint32_t cbReq;
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| 50 | } RTMEMHDR, *PRTMEMHDR;
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| 51 |
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| 52 |
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| 53 | /** @name RTMEMHDR::fFlags.
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| 54 | * @{ */
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| 55 | #define RTMEMHDR_FLAG_ZEROED RT_BIT(0)
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| 56 | #define RTMEMHDR_FLAG_EXEC RT_BIT(1)
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| 57 | #define RTMEMHDR_FLAG_ALLOC_ANY_CTX RT_BIT(2)
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| 58 | #define RTMEMHDR_FLAG_FREE_ANY_CTX RT_BIT(3)
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| 59 | #define RTMEMHDR_FLAG_ANY_CTX (RTMEMHDR_FLAG_ALLOC_ANY_CTX | RTMEMHDR_FLAG_FREE_ANY_CTX)
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| 60 | #define RTMEMHDR_FLAG_ALLOC_EX RT_BIT(4)
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| 61 | #ifdef RT_OS_LINUX
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| 62 | # define RTMEMHDR_FLAG_EXEC_HEAP RT_BIT(30)
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| 63 | # define RTMEMHDR_FLAG_KMALLOC RT_BIT(31)
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| 64 | #endif
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| 65 | /** @} */
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| 66 |
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| 67 |
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| 68 | PRTMEMHDR rtR0MemAlloc(size_t cb, uint32_t fFlags);
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| 69 | void rtR0MemFree(PRTMEMHDR pHdr);
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| 70 | #define rtR0MemAllocEx(cb, fFlags) rtR0MemAllocExTag((cb), (fFlags), RTMEM_TAG)
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| 71 | void *rtR0MemAllocExTag(size_t cb, uint32_t fFlags, const char *pszTag) RT_NO_THROW;
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| 72 | void rtR0MemFreeEx(void *pv) RT_NO_THROW;
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| 73 |
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| 74 | RT_C_DECLS_END
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| 75 | #endif
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| 76 |
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