forked from Mirror/Ryujinx
95017b8c66
* 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>
46 lines
1.6 KiB
C#
46 lines
1.6 KiB
C#
using System;
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namespace Ryujinx.Memory
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{
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/// <summary>
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/// Flags that controls allocation and other properties of the memory block memory.
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/// </summary>
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[Flags]
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public enum MemoryAllocationFlags
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{
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/// <summary>
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/// No special allocation settings.
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/// </summary>
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None = 0,
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/// <summary>
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/// Reserve a region of memory on the process address space,
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/// without actually allocation any backing memory.
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/// </summary>
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Reserve = 1 << 0,
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/// <summary>
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/// Enables read and write tracking of the memory block.
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/// This currently does nothing and is reserved for future use.
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/// </summary>
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Tracked = 1 << 1,
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/// <summary>
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/// Enables mirroring of the memory block through aliasing of memory pages.
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/// When enabled, this allows creating more memory blocks sharing the same backing storage.
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/// </summary>
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Mirrorable = 1 << 2,
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/// <summary>
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/// Indicates that the memory block should support mapping views of a mirrorable memory block.
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/// The block that is to have their views mapped should be created with the <see cref="Mirrorable"/> flag.
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/// </summary>
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ViewCompatible = 1 << 3,
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/// <summary>
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/// Forces views to be mapped page by page on Windows. When partial unmaps are done, this avoids the need
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/// to unmap the full range and remap sub-ranges, which creates a time window with incorrectly unmapped memory.
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/// </summary>
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ForceWindows4KBViewMapping = 1 << 4
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}
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}
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