40 lines
822 B
C++
40 lines
822 B
C++
// Copyright 2008 Dolphin Emulator Project
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#pragma once
|
|
|
|
#include <cstddef>
|
|
|
|
#ifdef _WIN32
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
#include "Common/CommonTypes.h"
|
|
|
|
namespace Common
|
|
{
|
|
// This class lets you create a block of anonymous RAM, and then arbitrarily map views into it.
|
|
// Multiple views can mirror the same section of the block, which makes it very convenient for
|
|
// emulating
|
|
// memory mirrors.
|
|
class MemArena
|
|
{
|
|
public:
|
|
void GrabSHMSegment(size_t size);
|
|
void ReleaseSHMSegment();
|
|
void* CreateView(s64 offset, size_t size, void* base = nullptr);
|
|
void ReleaseView(void* view, size_t size);
|
|
|
|
// This finds 1 GB in 32-bit, 16 GB in 64-bit.
|
|
static u8* FindMemoryBase();
|
|
|
|
private:
|
|
#ifdef _WIN32
|
|
HANDLE hMemoryMapping;
|
|
#else
|
|
int fd;
|
|
#endif
|
|
};
|
|
|
|
} // namespace Common
|