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48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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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, version 2.0 or later versions.
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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 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#pragma once
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#ifdef _WIN32
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#include "CommonWindows.h"
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#endif
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#include "Common.h"
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// This class lets you create a block of anonymous RAM, and then arbitrarily map views into it.
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// Multiple views can mirror the same section of the block, which makes it very convient for emulating
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// memory mirrors.
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class MemArena
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{
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public:
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size_t roundup(size_t x);
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void GrabLowMemSpace(size_t size);
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void ReleaseSpace();
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void *CreateView(s64 offset, size_t size, void *base = 0);
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void ReleaseView(void *view, size_t size);
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// This only finds 1 GB in 32-bit
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static u8 *Find4GBBase();
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private:
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#ifdef _WIN32
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HANDLE hMemoryMapping;
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#else
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int fd;
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#endif
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};
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