0f2ae614a1
Instead of submitting tons of tiny IO syscalls, we can speed things up significantly by `mmap`ing the .blend file into virtual memory and directly accessing it. In my local testing, this speeds up loading the Dweebs file with all its linked files from 19sec to 10sec (on Linux). As far as I can see, this should be supported on Linux, OSX and BSD. For Windows, a second code path uses `CreateFileMapping` and `MapViewOfFile` to achieve the same result. Reviewed By: mont29, brecht Differential Revision: https://developer.blender.org/D8246
53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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 Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*/
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/** \file
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* \ingroup imbuf
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* \brief Header file for allocimbuf.c
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*/
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct ImBuf;
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void imb_refcounter_lock_init(void);
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void imb_refcounter_lock_exit(void);
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#ifndef WIN32
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void imb_mmap_lock_init(void);
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void imb_mmap_lock_exit(void);
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void imb_mmap_lock(void);
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void imb_mmap_unlock(void);
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#else
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# define imb_mmap_lock_init()
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# define imb_mmap_lock_exit()
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# define imb_mmap_lock()
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# define imb_mmap_unlock()
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#endif
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bool imb_addencodedbufferImBuf(struct ImBuf *ibuf);
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bool imb_enlargeencodedbufferImBuf(struct ImBuf *ibuf);
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#ifdef __cplusplus
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}
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#endif
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