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Diffstat (limited to 'src/VBox/Runtime/include/internal/mem.h')
-rw-r--r-- | src/VBox/Runtime/include/internal/mem.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/src/VBox/Runtime/include/internal/mem.h b/src/VBox/Runtime/include/internal/mem.h new file mode 100644 index 00000000..2bae9d2b --- /dev/null +++ b/src/VBox/Runtime/include/internal/mem.h @@ -0,0 +1,77 @@ +/* $Id: mem.h $ */ +/** @file + * IPRT - Memory Management. + */ + +/* + * Copyright (C) 2010-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + */ + +#ifndef IPRT_INCLUDED_INTERNAL_mem_h +#define IPRT_INCLUDED_INTERNAL_mem_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/cdefs.h> + +RT_C_DECLS_BEGIN + +/** + * Special allocation method that does not have any IPRT dependencies. + * + * This is suitable for allocating memory for IPRT heaps, pools, caches, memory + * trackers, semaphores and similar that end up in bootstrap depencency hell + * otherwise. + * + * @returns Pointer to the allocated memory, NULL on failure. Must be freed by + * calling rtMemBaseFree(). + * @param cb The number of bytes to allocate. + */ +DECLHIDDEN(void *) rtMemBaseAlloc(size_t cb); + +/** + * Frees memory allocated by rtInitAlloc(). + * + * @param pv What rtInitAlloc() returned. + */ +DECLHIDDEN(void) rtMemBaseFree(void *pv); + + +#ifdef IN_RING0 +/** @def RTR0MEM_WITH_EF_APIS + * Enables the electrict fence APIs. + * + * Requires working rtR0MemObjNativeProtect implementation, thus the current + * OS restrictions. + */ +# if defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD) || defined(DOXYGEN_RUNNING) +# define RTR0MEM_WITH_EF_APIS +# endif +# ifdef RTR0MEM_WITH_EF_APIS +DECLHIDDEN(void) rtR0MemEfInit(void); +DECLHIDDEN(void) rtR0MemEfTerm(void); +# endif +#endif + +RT_C_DECLS_END + +#endif /* !IPRT_INCLUDED_INTERNAL_mem_h */ + |