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36 lines
1 KiB
C
36 lines
1 KiB
C
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/* Copyright (c) 2003-2004, Roger Dingledine
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2018, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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#ifndef TOR_MMAP_H
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#define TOR_MMAP_H
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#include "lib/cc/compat_compiler.h"
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#include <stddef.h>
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#ifdef _WIN32
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#include <windef.h>
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#endif
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/** Represents an mmaped file. Allocated via tor_mmap_file; freed with
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* tor_munmap_file. */
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typedef struct tor_mmap_t {
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const char *data; /**< Mapping of the file's contents. */
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size_t size; /**< Size of the file. */
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/* None of the fields below should be accessed from outside compat.c */
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#ifdef HAVE_MMAP
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size_t mapping_size; /**< Size of the actual mapping. (This is this file
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* size, rounded up to the nearest page.) */
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#elif defined _WIN32
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HANDLE mmap_handle;
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#endif /* defined(HAVE_MMAP) || ... */
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} tor_mmap_t;
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tor_mmap_t *tor_mmap_file(const char *filename) ATTR_NONNULL((1));
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int tor_munmap_file(tor_mmap_t *handle) ATTR_NONNULL((1));
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#endif
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