mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-20 07:38:42 +02:00
* Refactoring of KMemoryManager class * Replace some trivial uses of DRAM address with VA * Get rid of GetDramAddressFromVa * Abstracting more operations on derived page table class * Run auto-format on KPageTableBase * Managed to make TryConvertVaToPa private, few uses remains now * Implement guest physical pages ref counting, remove manual freeing * Make DoMmuOperation private and call new abstract methods only from the base class * Pass pages count rather than size on Map/UnmapMemory * Change memory managers to take host pointers * Fix a guest memory leak and simplify KPageTable * Expose new methods for host range query and mapping * Some refactoring of MapPagesFromClientProcess to allow proper page ref counting and mapping without KPageLists * Remove more uses of AddVaRangeToPageList, now only one remains (shared memory page checking) * Add a SharedMemoryStorage class, will be useful for host mapping * Sayonara AddVaRangeToPageList, you served us well * Start to implement host memory mapping (WIP) * Support memory tracking through host exception handling * Fix some access violations from HLE service guest memory access and CPU * Fix memory tracking * Fix mapping list bugs, including a race and a error adding mapping ranges * Simple page table for memory tracking * Simple "volatile" region handle mode * Update UBOs directly (experimental, rough) * Fix the overlap check * Only set non-modified buffers as volatile * Fix some memory tracking issues * Fix possible race in MapBufferFromClientProcess (block list updates were not locked) * Write uniform update to memory immediately, only defer the buffer set. * Fix some memory tracking issues * Pass correct pages count on shared memory unmap * Armeilleure Signal Handler v1 + Unix changes Unix currently behaves like windows, rather than remapping physical * Actually check if the host platform is unix * Fix decommit on linux. * Implement windows 10 placeholder shared memory, fix a buffer issue. * Make PTC version something that will never match with master * Remove testing variable for block count * Add reference count for memory manager, fix dispose Can still deadlock with OpenAL * Add address validation, use page table for mapped check, add docs Might clean up the page table traversing routines. * Implement batched mapping/tracking. * Move documentation, fix tests. * Cleanup uniform buffer update stuff. * Remove unnecessary assignment. * Add unsafe host mapped memory switch On by default. Would be good to turn this off for untrusted code (homebrew, exefs mods) and give the user the option to turn it on manually, though that requires some UI work. * Remove C# exception handlers They have issues due to current .NET limitations, so the meilleure one fully replaces them for now. * Fix MapPhysicalMemory on the software MemoryManager. * Null check for GetHostAddress, docs * Add configuration for setting memory manager mode (not in UI yet) * Add config to UI * Fix type mismatch on Unix signal handler code emit * Fix 6GB DRAM mode. The size can be greater than `uint.MaxValue` when the DRAM is >4GB. * Address some feedback. * More detailed error if backing memory cannot be mapped. * SetLastError on all OS functions for consistency * Force pages dirty with UBO update instead of setting them directly. Seems to be much faster across a few games. Need retesting. * Rebase, configuration rework, fix mem tracking regression * Fix race in FreePages * Set memory managers null after decrementing ref count * Remove readonly keyword, as this is now modified. * Use a local variable for the signal handler rather than a register. * Fix bug with buffer resize, and index/uniform buffer binding. Should fix flickering in games. * Add InvalidAccessHandler to MemoryTracking Doesn't do anything yet * Call invalid access handler on unmapped read/write. Same rules as the regular memory manager. * Make unsafe mapped memory its own MemoryManagerType * Move FlushUboDirty into UpdateState. * Buffer dirty cache, rather than ubo cache Much cleaner, may be reusable for Inline2Memory updates. * This doesn't return anything anymore. * Add sigaction remove methods, correct a few function signatures. * Return empty list of physical regions for size 0. * Also on AddressSpaceManager Co-authored-by: gdkchan <gab.dark.100@gmail.com>
279 lines
9 KiB
C#
279 lines
9 KiB
C#
using Mono.Unix.Native;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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namespace Ryujinx.Memory
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{
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static class MemoryManagementUnix
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{
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private struct UnixSharedMemory
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{
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public IntPtr Pointer;
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public ulong Size;
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public IntPtr SourcePointer;
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}
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[DllImport("libc", SetLastError = true)]
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public static extern IntPtr mremap(IntPtr old_address, ulong old_size, ulong new_size, MremapFlags flags, IntPtr new_address);
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[DllImport("libc", SetLastError = true)]
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public static extern int madvise(IntPtr address, ulong size, int advice);
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private const int MADV_DONTNEED = 4;
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private const int MADV_REMOVE = 9;
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private static readonly List<UnixSharedMemory> _sharedMemory = new List<UnixSharedMemory>();
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private static readonly ConcurrentDictionary<IntPtr, ulong> _sharedMemorySource = new ConcurrentDictionary<IntPtr, ulong>();
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private static readonly ConcurrentDictionary<IntPtr, ulong> _allocations = new ConcurrentDictionary<IntPtr, ulong>();
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public static IntPtr Allocate(ulong size)
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{
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return AllocateInternal(size, MmapProts.PROT_READ | MmapProts.PROT_WRITE);
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}
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public static IntPtr Reserve(ulong size)
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{
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return AllocateInternal(size, MmapProts.PROT_NONE);
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}
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private static IntPtr AllocateInternal(ulong size, MmapProts prot, bool shared = false)
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{
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MmapFlags flags = MmapFlags.MAP_ANONYMOUS;
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if (shared)
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{
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flags |= MmapFlags.MAP_SHARED | (MmapFlags)0x80000;
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}
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else
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{
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flags |= MmapFlags.MAP_PRIVATE;
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}
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if (prot == MmapProts.PROT_NONE)
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{
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flags |= MmapFlags.MAP_NORESERVE;
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}
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IntPtr ptr = Syscall.mmap(IntPtr.Zero, size, prot, flags, -1, 0);
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if (ptr == new IntPtr(-1L))
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{
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throw new OutOfMemoryException();
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}
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if (!_allocations.TryAdd(ptr, size))
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{
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// This should be impossible, kernel shouldn't return an already mapped address.
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throw new InvalidOperationException();
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}
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return ptr;
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}
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public static bool Commit(IntPtr address, ulong size)
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{
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bool success = Syscall.mprotect(address, size, MmapProts.PROT_READ | MmapProts.PROT_WRITE) == 0;
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if (success)
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{
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foreach (var shared in _sharedMemory)
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{
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if ((ulong)address + size > (ulong)shared.SourcePointer && (ulong)address < (ulong)shared.SourcePointer + shared.Size)
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{
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ulong sharedAddress = ((ulong)address - (ulong)shared.SourcePointer) + (ulong)shared.Pointer;
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if (Syscall.mprotect((IntPtr)sharedAddress, size, MmapProts.PROT_READ | MmapProts.PROT_WRITE) != 0)
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{
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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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return success;
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}
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public static bool Decommit(IntPtr address, ulong size)
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{
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bool isShared;
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lock (_sharedMemory)
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{
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isShared = _sharedMemory.Exists(x => (ulong)address >= (ulong)x.Pointer && (ulong)address + size <= (ulong)x.Pointer + x.Size);
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}
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// Must be writable for madvise to work properly.
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Syscall.mprotect(address, size, MmapProts.PROT_READ | MmapProts.PROT_WRITE);
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madvise(address, size, isShared ? MADV_REMOVE : MADV_DONTNEED);
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return Syscall.mprotect(address, size, MmapProts.PROT_NONE) == 0;
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}
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public static bool Reprotect(IntPtr address, ulong size, MemoryPermission permission)
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{
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return Syscall.mprotect(address, size, GetProtection(permission)) == 0;
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}
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private static MmapProts GetProtection(MemoryPermission permission)
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{
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return permission switch
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{
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MemoryPermission.None => MmapProts.PROT_NONE,
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MemoryPermission.Read => MmapProts.PROT_READ,
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MemoryPermission.ReadAndWrite => MmapProts.PROT_READ | MmapProts.PROT_WRITE,
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MemoryPermission.ReadAndExecute => MmapProts.PROT_READ | MmapProts.PROT_EXEC,
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MemoryPermission.ReadWriteExecute => MmapProts.PROT_READ | MmapProts.PROT_WRITE | MmapProts.PROT_EXEC,
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MemoryPermission.Execute => MmapProts.PROT_EXEC,
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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 (_allocations.TryRemove(address, out ulong size))
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{
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return Syscall.munmap(address, size) == 0;
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}
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return false;
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}
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public static IntPtr Remap(IntPtr target, IntPtr source, ulong size)
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{
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int flags = (int)MremapFlags.MREMAP_MAYMOVE;
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if (target != IntPtr.Zero)
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{
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flags |= 2;
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}
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IntPtr result = mremap(source, 0, size, (MremapFlags)(flags), target);
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if (result == IntPtr.Zero)
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{
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throw new InvalidOperationException();
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}
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return result;
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}
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public static IntPtr CreateSharedMemory(ulong size, bool reserve)
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{
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IntPtr result = AllocateInternal(
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size,
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reserve ? MmapProts.PROT_NONE : MmapProts.PROT_READ | MmapProts.PROT_WRITE,
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true);
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if (result == IntPtr.Zero)
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{
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throw new OutOfMemoryException();
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}
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_sharedMemorySource[result] = (ulong)size;
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return result;
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}
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public static void DestroySharedMemory(IntPtr handle)
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{
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lock (_sharedMemory)
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{
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foreach (var memory in _sharedMemory)
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{
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if (memory.SourcePointer == handle)
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{
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throw new InvalidOperationException("Shared memory cannot be destroyed unless fully unmapped.");
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}
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}
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}
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_sharedMemorySource.Remove(handle, out ulong _);
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}
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public static IntPtr MapSharedMemory(IntPtr handle)
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{
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// Try find the handle for this shared memory. If it is mapped, then we want to map
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// it a second time in another location.
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// If it is not mapped, then its handle is the mapping.
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ulong size = _sharedMemorySource[handle];
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if (size == 0)
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{
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throw new InvalidOperationException("Shared memory cannot be mapped after its source is unmapped.");
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}
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lock (_sharedMemory)
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{
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foreach (var memory in _sharedMemory)
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{
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if (memory.Pointer == handle)
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{
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IntPtr result = AllocateInternal(
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memory.Size,
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MmapProts.PROT_NONE
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);
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if (result == IntPtr.Zero)
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{
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throw new OutOfMemoryException();
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}
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Remap(result, handle, memory.Size);
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_sharedMemory.Add(new UnixSharedMemory
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{
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Pointer = result,
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Size = memory.Size,
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SourcePointer = handle
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});
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return result;
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}
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}
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_sharedMemory.Add(new UnixSharedMemory
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{
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Pointer = handle,
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Size = size,
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SourcePointer = handle
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});
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}
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return handle;
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}
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public static void UnmapSharedMemory(IntPtr address)
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{
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lock (_sharedMemory)
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{
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int removed = _sharedMemory.RemoveAll(memory =>
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{
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if (memory.Pointer == address)
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{
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if (memory.Pointer == memory.SourcePointer)
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{
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// After removing the original mapping, it cannot be mapped again.
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_sharedMemorySource[memory.SourcePointer] = 0;
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}
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Free(address);
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return true;
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}
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return false;
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});
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if (removed == 0)
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{
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throw new InvalidOperationException("Shared memory mapping could not be found.");
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}
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}
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}
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}
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} |