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| author | gdkchan <gab.dark.100@gmail.com> | 2022-05-02 20:30:02 -0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-05-02 20:30:02 -0300 |
| commit | 95017b8c66f70406e926b278ecdd6d4ec0a93110 (patch) | |
| tree | 3fc8e9a515f9adda96cf0c9d6983a375045ba68c /Ryujinx.Memory/MemoryManagerUnixHelper.cs | |
| parent | 4a892fbdc9059504358ddf41c27576032e1ce414 (diff) | |
Support memory aliasing (#2954)1.1.110
* Back to the origins: Make memory manager take guest PA rather than host address once again
* Direct mapping with alias support on Windows
* Fixes and remove more of the emulated shared memory
* Linux support
* Make shared and transfer memory not depend on SharedMemoryStorage
* More efficient view mapping on Windows (no more restricted to 4KB pages at a time)
* Handle potential access violations caused by partial unmap
* Implement host mapping using shared memory on Linux
* Add new GetPhysicalAddressChecked method, used to ensure the virtual address is mapped before address translation
Also align GetRef behaviour with software memory manager
* We don't need a mirrorable memory block for software memory manager mode
* Disable memory aliasing tests while we don't have shared memory support on Mac
* Shared memory & SIGBUS handler for macOS
* Fix typo + nits + re-enable memory tests
* Set MAP_JIT_DARWIN on x86 Mac too
* Add back the address space mirror
* Only set MAP_JIT_DARWIN if we are mapping as executable
* Disable aliasing tests again (still fails on Mac)
* Fix UnmapView4KB (by not casting size to int)
* Use ref counting on memory blocks to delay closing the shared memory handle until all blocks using it are disposed
* Address PR feedback
* Make RO hold a reference to the guest process memory manager to avoid early disposal
Co-authored-by: nastys <nastys@users.noreply.github.com>
Diffstat (limited to 'Ryujinx.Memory/MemoryManagerUnixHelper.cs')
| -rw-r--r-- | Ryujinx.Memory/MemoryManagerUnixHelper.cs | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/Ryujinx.Memory/MemoryManagerUnixHelper.cs b/Ryujinx.Memory/MemoryManagerUnixHelper.cs index 4409ccee..8e6e7935 100644 --- a/Ryujinx.Memory/MemoryManagerUnixHelper.cs +++ b/Ryujinx.Memory/MemoryManagerUnixHelper.cs @@ -21,7 +21,23 @@ namespace Ryujinx.Memory MAP_PRIVATE = 2, MAP_ANONYMOUS = 4, MAP_NORESERVE = 8, - MAP_UNLOCKED = 16 + MAP_FIXED = 16, + MAP_UNLOCKED = 32 + } + + [Flags] + public enum OpenFlags : uint + { + O_RDONLY = 0, + O_WRONLY = 1, + O_RDWR = 2, + O_CREAT = 4, + O_EXCL = 8, + O_NOCTTY = 16, + O_TRUNC = 32, + O_APPEND = 64, + O_NONBLOCK = 128, + O_SYNC = 256, } private const int MAP_ANONYMOUS_LINUX_GENERIC = 0x20; @@ -50,6 +66,24 @@ namespace Ryujinx.Memory [DllImport("libc", SetLastError = true)] public static extern int madvise(IntPtr address, ulong size, int advice); + [DllImport("libc", SetLastError = true)] + public static extern int mkstemp(IntPtr template); + + [DllImport("libc", SetLastError = true)] + public static extern int unlink(IntPtr pathname); + + [DllImport("libc", SetLastError = true)] + public static extern int ftruncate(int fildes, IntPtr length); + + [DllImport("libc", SetLastError = true)] + public static extern int close(int fd); + + [DllImport("libc", SetLastError = true)] + public static extern int shm_open(IntPtr name, int oflag, uint mode); + + [DllImport("libc", SetLastError = true)] + public static extern int shm_unlink(IntPtr name); + private static int MmapFlagsToSystemFlags(MmapFlags flags) { int result = 0; @@ -64,6 +98,11 @@ namespace Ryujinx.Memory result |= (int)MmapFlags.MAP_PRIVATE; } + if (flags.HasFlag(MmapFlags.MAP_FIXED)) + { + result |= (int)MmapFlags.MAP_FIXED; + } + if (flags.HasFlag(MmapFlags.MAP_ANONYMOUS)) { if (OperatingSystem.IsLinux()) |