| 1 | /* $Id: mem.h 93115 2022-01-01 11:31:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Memory Management.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2010-2022 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 IPRT_INCLUDED_INTERNAL_mem_h
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| 28 | #define IPRT_INCLUDED_INTERNAL_mem_h
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| 29 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 30 | # pragma once
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| 31 | #endif
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| 32 |
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| 33 | #include <iprt/cdefs.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 | * Special allocation method that does not have any IPRT dependencies.
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| 39 | *
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| 40 | * This is suitable for allocating memory for IPRT heaps, pools, caches, memory
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| 41 | * trackers, semaphores and similar that end up in bootstrap depencency hell
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| 42 | * otherwise.
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| 43 | *
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| 44 | * @returns Pointer to the allocated memory, NULL on failure. Must be freed by
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| 45 | * calling rtMemBaseFree().
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| 46 | * @param cb The number of bytes to allocate.
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| 47 | */
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| 48 | DECLHIDDEN(void *) rtMemBaseAlloc(size_t cb);
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| 49 |
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| 50 | /**
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| 51 | * Frees memory allocated by rtInitAlloc().
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| 52 | *
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| 53 | * @param pv What rtInitAlloc() returned.
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| 54 | */
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| 55 | DECLHIDDEN(void) rtMemBaseFree(void *pv);
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| 56 |
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| 57 |
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| 58 | #ifdef IN_RING0
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| 59 | /** @def RTR0MEM_WITH_EF_APIS
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| 60 | * Enables the electrict fence APIs.
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| 61 | *
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| 62 | * Requires working rtR0MemObjNativeProtect implementation, thus the current
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| 63 | * OS restrictions.
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| 64 | */
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| 65 | # if defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD) || defined(DOXYGEN_RUNNING)
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| 66 | # define RTR0MEM_WITH_EF_APIS
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| 67 | # endif
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| 68 | # ifdef RTR0MEM_WITH_EF_APIS
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| 69 | DECLHIDDEN(void) rtR0MemEfInit(void);
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| 70 | DECLHIDDEN(void) rtR0MemEfTerm(void);
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| 71 | # endif
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| 72 | #endif
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| 73 |
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| 74 | RT_C_DECLS_END
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| 75 |
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| 76 | #endif /* !IPRT_INCLUDED_INTERNAL_mem_h */
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| 77 |
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