0a75b73fa4
* dotnet format style --severity info Some changes were manually reverted. * dotnet format analyzers --serverity info Some changes have been minimally adapted. * Silence dotnet format IDE0059 warnings * Address or silence dotnet format IDE1006 warnings * Address dotnet format CA1816 warnings * Address or silence dotnet format CA1069 warnings * Address remaining dotnet format analyzer warnings * Address review comments * Address most dotnet format whitespace warnings * Apply dotnet format whitespace formatting A few of them have been manually reverted and the corresponding warning was silenced * Format if-blocks correctly * Another rebase, another dotnet format run * Run dotnet format after rebase and remove unused usings - analyzers - style - whitespace * Add comments to disabled warnings * Simplify properties and array initialization, Use const when possible, Remove trailing commas * Revert "Simplify properties and array initialization, Use const when possible, Remove trailing commas" This reverts commit 9462e4136c0a2100dc28b20cf9542e06790aa67e. * dotnet format whitespace after rebase * Address review feedback * Assign Decommit to ReplacePlaceholder * Run final dotnet format pass * Organize imports again * Add trailing commas * Add missing newline
172 lines
5.3 KiB
C#
172 lines
5.3 KiB
C#
using System;
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using System.Runtime.InteropServices;
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using System.Runtime.Versioning;
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namespace Ryujinx.Memory
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{
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[SupportedOSPlatform("linux")]
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[SupportedOSPlatform("macos")]
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public static partial class MemoryManagerUnixHelper
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{
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[Flags]
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public enum MmapProts : uint
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{
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PROT_NONE = 0,
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PROT_READ = 1,
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PROT_WRITE = 2,
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PROT_EXEC = 4,
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}
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[Flags]
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public enum MmapFlags : uint
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{
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MAP_SHARED = 1,
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MAP_PRIVATE = 2,
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MAP_ANONYMOUS = 4,
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MAP_NORESERVE = 8,
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MAP_FIXED = 16,
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MAP_UNLOCKED = 32,
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MAP_JIT_DARWIN = 0x800,
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}
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[Flags]
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public enum OpenFlags : uint
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{
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O_RDONLY = 0,
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O_WRONLY = 1,
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O_RDWR = 2,
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O_CREAT = 4,
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O_EXCL = 8,
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O_NOCTTY = 16,
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O_TRUNC = 32,
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O_APPEND = 64,
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O_NONBLOCK = 128,
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O_SYNC = 256,
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}
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public const IntPtr MAP_FAILED = -1;
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private const int MAP_ANONYMOUS_LINUX_GENERIC = 0x20;
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private const int MAP_NORESERVE_LINUX_GENERIC = 0x4000;
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private const int MAP_UNLOCKED_LINUX_GENERIC = 0x80000;
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private const int MAP_NORESERVE_DARWIN = 0x40;
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private const int MAP_ANONYMOUS_DARWIN = 0x1000;
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public const int MADV_DONTNEED = 4;
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public const int MADV_REMOVE = 9;
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[LibraryImport("libc", EntryPoint = "mmap", SetLastError = true)]
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private static partial IntPtr Internal_mmap(IntPtr address, ulong length, MmapProts prot, int flags, int fd, long offset);
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[LibraryImport("libc", SetLastError = true)]
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public static partial int mprotect(IntPtr address, ulong length, MmapProts prot);
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[LibraryImport("libc", SetLastError = true)]
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public static partial int munmap(IntPtr address, ulong length);
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[LibraryImport("libc", SetLastError = true)]
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public static partial IntPtr mremap(IntPtr old_address, ulong old_size, ulong new_size, int flags, IntPtr new_address);
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[LibraryImport("libc", SetLastError = true)]
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public static partial int madvise(IntPtr address, ulong size, int advice);
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[LibraryImport("libc", SetLastError = true)]
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public static partial int mkstemp(IntPtr template);
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[LibraryImport("libc", SetLastError = true)]
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public static partial int unlink(IntPtr pathname);
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[LibraryImport("libc", SetLastError = true)]
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public static partial int ftruncate(int fildes, IntPtr length);
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[LibraryImport("libc", SetLastError = true)]
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public static partial int close(int fd);
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[LibraryImport("libc", SetLastError = true)]
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public static partial int shm_open(IntPtr name, int oflag, uint mode);
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[LibraryImport("libc", SetLastError = true)]
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public static partial int shm_unlink(IntPtr name);
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private static int MmapFlagsToSystemFlags(MmapFlags flags)
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{
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int result = 0;
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if (flags.HasFlag(MmapFlags.MAP_SHARED))
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{
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result |= (int)MmapFlags.MAP_SHARED;
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}
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if (flags.HasFlag(MmapFlags.MAP_PRIVATE))
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{
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result |= (int)MmapFlags.MAP_PRIVATE;
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}
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if (flags.HasFlag(MmapFlags.MAP_FIXED))
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{
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result |= (int)MmapFlags.MAP_FIXED;
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}
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if (flags.HasFlag(MmapFlags.MAP_ANONYMOUS))
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{
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if (OperatingSystem.IsLinux())
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{
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result |= MAP_ANONYMOUS_LINUX_GENERIC;
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}
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else if (OperatingSystem.IsMacOS())
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{
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result |= MAP_ANONYMOUS_DARWIN;
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}
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else
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{
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throw new NotImplementedException();
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}
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}
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if (flags.HasFlag(MmapFlags.MAP_NORESERVE))
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{
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if (OperatingSystem.IsLinux())
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{
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result |= MAP_NORESERVE_LINUX_GENERIC;
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}
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else if (OperatingSystem.IsMacOS())
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{
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result |= MAP_NORESERVE_DARWIN;
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}
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else
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{
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throw new NotImplementedException();
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}
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}
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if (flags.HasFlag(MmapFlags.MAP_UNLOCKED))
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{
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if (OperatingSystem.IsLinux())
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{
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result |= MAP_UNLOCKED_LINUX_GENERIC;
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}
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else if (OperatingSystem.IsMacOS())
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{
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// FIXME: Doesn't exist on Darwin
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}
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else
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{
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throw new NotImplementedException();
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}
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}
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if (flags.HasFlag(MmapFlags.MAP_JIT_DARWIN) && OperatingSystem.IsMacOSVersionAtLeast(10, 14))
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{
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result |= (int)MmapFlags.MAP_JIT_DARWIN;
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}
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return result;
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}
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public static IntPtr Mmap(IntPtr address, ulong length, MmapProts prot, MmapFlags flags, int fd, long offset)
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{
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return Internal_mmap(address, length, prot, MmapFlagsToSystemFlags(flags), fd, offset);
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}
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}
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}
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