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bsd: Fix eventfd broken logic (#3647)
* bsd: Fix eventfd broken logic This commit fix eventfd logic being broken. The following changes were made: - EventFd IPC definition had argument inverted - EventFd events weren't fired correctly - Poll logic was wrong and unfinished for eventfd - Reintroduce workaround from #3385 but in a safer way, and spawn 4 threads. * ipc: Rework a bit for multithreads * Clean up debug logs * Make server thread yield when managed lock isn't availaible * Fix replyTargetHandle not being added in the proper locking scope * Simplify some scopes * Address gdkchan's comments * Revert IPC workaround for now * Reintroduce the EventFileDescriptor workaround
This commit is contained in:
parent
18b61aff59
commit
1865ea87e5
3 changed files with 60 additions and 17 deletions
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@ -315,6 +315,11 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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}
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}
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if (updateCount > 0)
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{
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break;
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}
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// If we are here, that mean nothing was availaible, sleep for 50ms
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context.Device.System.KernelContext.Syscall.SleepThread(50 * 1000000);
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}
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@ -972,11 +977,12 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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}
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[CommandHipc(31)] // 7.0.0+
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// EventFd(u64 initval, nn::socket::EventFdFlags flags) -> (i32 ret, u32 bsd_errno)
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// EventFd(nn::socket::EventFdFlags flags, u64 initval) -> (i32 ret, u32 bsd_errno)
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public ResultCode EventFd(ServiceCtx context)
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{
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ulong initialValue = context.RequestData.ReadUInt64();
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EventFdFlags flags = (EventFdFlags)context.RequestData.ReadUInt32();
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context.RequestData.BaseStream.Position += 4; // Padding
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ulong initialValue = context.RequestData.ReadUInt64();
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EventFileDescriptor newEventFile = new EventFileDescriptor(initialValue, flags);
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@ -26,8 +26,9 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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_value = value;
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_flags = flags;
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WriteEvent = new ManualResetEvent(true);
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ReadEvent = new ManualResetEvent(true);
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WriteEvent = new ManualResetEvent(false);
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ReadEvent = new ManualResetEvent(false);
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UpdateEventStates();
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}
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public int Refcount { get; set; }
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@ -38,6 +39,25 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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ReadEvent.Dispose();
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}
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private void ResetEventStates()
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{
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WriteEvent.Reset();
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ReadEvent.Reset();
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}
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private void UpdateEventStates()
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{
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if (_value > 0)
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{
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ReadEvent.Set();
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}
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if (_value != uint.MaxValue - 1)
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{
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WriteEvent.Set();
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}
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}
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public LinuxError Read(out int readSize, Span<byte> buffer)
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{
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if (buffer.Length < sizeof(ulong))
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@ -47,10 +67,10 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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return LinuxError.EINVAL;
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}
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ReadEvent.Reset();
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lock (_lock)
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{
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ResetEventStates();
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ref ulong count = ref MemoryMarshal.Cast<byte, ulong>(buffer)[0];
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if (_value == 0)
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@ -66,6 +86,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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{
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readSize = 0;
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UpdateEventStates();
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return LinuxError.EAGAIN;
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}
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}
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@ -85,8 +106,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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_value = 0;
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}
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ReadEvent.Set();
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UpdateEventStates();
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return LinuxError.SUCCESS;
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}
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}
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@ -100,10 +120,10 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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return LinuxError.EINVAL;
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}
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WriteEvent.Reset();
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lock (_lock)
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{
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ResetEventStates();
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if (_value > _value + count)
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{
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if (Blocking)
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@ -114,6 +134,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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{
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writeSize = 0;
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UpdateEventStates();
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return LinuxError.EAGAIN;
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}
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}
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@ -123,8 +144,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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_value += count;
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Monitor.Pulse(_lock);
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WriteEvent.Set();
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UpdateEventStates();
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return LinuxError.SUCCESS;
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}
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}
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@ -68,20 +68,37 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
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{
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for (int i = 0; i < events.Count; i++)
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{
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PollEventTypeMask outputEvents = 0;
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PollEvent evnt = events[i];
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EventFileDescriptor socket = (EventFileDescriptor)evnt.FileDescriptor;
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if ((evnt.Data.InputEvents.HasFlag(PollEventTypeMask.Input) ||
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evnt.Data.InputEvents.HasFlag(PollEventTypeMask.UrgentInput))
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&& socket.ReadEvent.WaitOne(0))
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if (socket.ReadEvent.WaitOne(0))
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{
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waiters.Add(socket.ReadEvent);
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if (evnt.Data.InputEvents.HasFlag(PollEventTypeMask.Input))
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{
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outputEvents |= PollEventTypeMask.Input;
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}
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if (evnt.Data.InputEvents.HasFlag(PollEventTypeMask.UrgentInput))
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{
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outputEvents |= PollEventTypeMask.UrgentInput;
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}
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}
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if ((evnt.Data.InputEvents.HasFlag(PollEventTypeMask.Output))
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&& socket.WriteEvent.WaitOne(0))
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{
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waiters.Add(socket.WriteEvent);
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outputEvents |= PollEventTypeMask.Output;
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}
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if (outputEvents != 0)
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{
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evnt.Data.OutputEvents = outputEvents;
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updatedCount++;
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}
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}
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}
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