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kichikuou
5ec0c0a7be
Emscripten expects that file descriptor used for mmap is not closed until the map is unmapped -- otherwise it may silently break unrelated file (https://github.com/emscripten-core/emscripten/issues/4352).
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/*
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* Copyright (C) 2020 <KichikuouChrome@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __MMAP_H__
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#define __MMAP_H__
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#include <stddef.h>
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#if defined(HAVE_MMAP) || defined(_WIN32)
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#define HAVE_MEMORY_MAPPED_FILE
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#endif
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typedef struct {
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void *addr;
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#ifndef _WIN32
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size_t length;
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int fd; // Emscripten needs fd for mmap kept open.
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#endif
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} mmap_t;
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mmap_t *map_file(const char *path);
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mmap_t *map_file_readwrite(const char *path, size_t size);
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int unmap_file(mmap_t *m);
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#endif /* __MMAP_H__ */
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