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https://github.com/Ryujinx/Ryujinx.git
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114 lines
3.6 KiB
C#
114 lines
3.6 KiB
C#
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using System;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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namespace ARMeilleure.Memory
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{
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public static class MemoryManagement
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{
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public static bool HasWriteWatchSupport => RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
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public static IntPtr Allocate(ulong size)
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{
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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IntPtr sizeNint = new IntPtr((long)size);
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return MemoryManagementWindows.Allocate(sizeNint);
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ||
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RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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return MemoryManagementUnix.Allocate(size);
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}
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else
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{
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throw new PlatformNotSupportedException();
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}
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}
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public static IntPtr AllocateWriteTracked(ulong size)
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{
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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IntPtr sizeNint = new IntPtr((long)size);
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return MemoryManagementWindows.AllocateWriteTracked(sizeNint);
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ||
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RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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return MemoryManagementUnix.Allocate(size);
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}
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else
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{
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throw new PlatformNotSupportedException();
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}
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}
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public static void Reprotect(IntPtr address, ulong size, MemoryProtection permission)
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{
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bool result;
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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IntPtr sizeNint = new IntPtr((long)size);
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result = MemoryManagementWindows.Reprotect(address, sizeNint, permission);
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ||
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RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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result = MemoryManagementUnix.Reprotect(address, size, permission);
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}
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else
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{
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throw new PlatformNotSupportedException();
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}
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if (!result)
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{
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throw new MemoryProtectionException(permission);
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}
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}
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public static bool Free(IntPtr address)
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{
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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return MemoryManagementWindows.Free(address);
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ||
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RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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return MemoryManagementUnix.Free(address);
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}
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else
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{
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throw new PlatformNotSupportedException();
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static bool GetModifiedPages(
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IntPtr address,
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IntPtr size,
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IntPtr[] addresses,
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out ulong count)
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{
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// This is only supported on windows, but returning
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// false (failed) is also valid for platforms without
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// write tracking support on the OS.
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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return MemoryManagementWindows.GetModifiedPages(address, size, addresses, out count);
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}
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else
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{
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count = 0;
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return false;
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}
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}
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}
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}
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