diff options
| author | TSR Berry <20988865+TSRBerry@users.noreply.github.com> | 2023-04-08 01:22:00 +0200 |
|---|---|---|
| committer | Mary <thog@protonmail.com> | 2023-04-27 23:51:14 +0200 |
| commit | cee712105850ac3385cd0091a923438167433f9f (patch) | |
| tree | 4a5274b21d8b7f938c0d0ce18736d3f2993b11b1 /src/Ryujinx.HLE/HOS/Kernel/Threading/KCriticalSection.cs | |
| parent | cd124bda587ef09668a971fa1cac1c3f0cfc9f21 (diff) | |
Move solution and projects to src
Diffstat (limited to 'src/Ryujinx.HLE/HOS/Kernel/Threading/KCriticalSection.cs')
| -rw-r--r-- | src/Ryujinx.HLE/HOS/Kernel/Threading/KCriticalSection.cs | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/Ryujinx.HLE/HOS/Kernel/Threading/KCriticalSection.cs b/src/Ryujinx.HLE/HOS/Kernel/Threading/KCriticalSection.cs new file mode 100644 index 00000000..1d61f2f0 --- /dev/null +++ b/src/Ryujinx.HLE/HOS/Kernel/Threading/KCriticalSection.cs @@ -0,0 +1,64 @@ +using System.Threading; + +namespace Ryujinx.HLE.HOS.Kernel.Threading +{ + class KCriticalSection + { + private readonly KernelContext _context; + private readonly object _lock; + private int _recursionCount; + + public object Lock => _lock; + + public KCriticalSection(KernelContext context) + { + _context = context; + _lock = new object(); + } + + public void Enter() + { + Monitor.Enter(_lock); + + _recursionCount++; + } + + public void Leave() + { + if (_recursionCount == 0) + { + return; + } + + if (--_recursionCount == 0) + { + ulong scheduledCoresMask = KScheduler.SelectThreads(_context); + + Monitor.Exit(_lock); + + KThread currentThread = KernelStatic.GetCurrentThread(); + bool isCurrentThreadSchedulable = currentThread != null && currentThread.IsSchedulable; + if (isCurrentThreadSchedulable) + { + KScheduler.EnableScheduling(_context, scheduledCoresMask); + } + else + { + KScheduler.EnableSchedulingFromForeignThread(_context, scheduledCoresMask); + + // If the thread exists but is not schedulable, we still want to suspend + // it if it's not runnable. That allows the kernel to still block HLE threads + // even if they are not scheduled on guest cores. + if (currentThread != null && !currentThread.IsSchedulable && currentThread.Context.Running) + { + currentThread.SchedulerWaitEvent.WaitOne(); + } + } + } + else + { + Monitor.Exit(_lock); + } + } + } +}
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