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https://github.com/Ryujinx/Ryujinx.git
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15d1cc806b
* Move kernel state from Horizon to KernelContext * Merge syscalls partial classes, split 32 and 64-bit variants * Sort usings
92 lines
No EOL
2.7 KiB
C#
92 lines
No EOL
2.7 KiB
C#
using System.Threading;
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namespace Ryujinx.HLE.HOS.Kernel.Threading
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{
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class KCriticalSection
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{
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private readonly KernelContext _context;
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public object LockObj { get; private set; }
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private int _recursionCount;
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public KCriticalSection(KernelContext context)
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{
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_context = context;
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LockObj = new object();
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}
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public void Enter()
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{
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Monitor.Enter(LockObj);
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_recursionCount++;
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}
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public void Leave()
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{
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if (_recursionCount == 0)
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{
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return;
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}
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bool doContextSwitch = false;
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if (--_recursionCount == 0)
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{
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if (_context.Scheduler.ThreadReselectionRequested)
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{
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_context.Scheduler.SelectThreads();
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}
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Monitor.Exit(LockObj);
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if (_context.Scheduler.MultiCoreScheduling)
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{
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lock (_context.Scheduler.CoreContexts)
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{
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for (int core = 0; core < KScheduler.CpuCoresCount; core++)
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{
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KCoreContext coreContext = _context.Scheduler.CoreContexts[core];
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if (coreContext.ContextSwitchNeeded)
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{
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KThread currentThread = coreContext.CurrentThread;
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if (currentThread == null)
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{
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// Nothing is running, we can perform the context switch immediately.
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coreContext.ContextSwitch();
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}
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else if (currentThread.IsCurrentHostThread())
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{
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// Thread running on the current core, context switch will block.
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doContextSwitch = true;
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}
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else
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{
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// Thread running on another core, request a interrupt.
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currentThread.Context.RequestInterrupt();
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}
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}
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}
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}
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}
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else
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{
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doContextSwitch = true;
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}
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}
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else
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{
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Monitor.Exit(LockObj);
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}
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if (doContextSwitch)
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{
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_context.Scheduler.ContextSwitch();
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}
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}
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}
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} |