1 files changed, 38 insertions, 0 deletions
diff --git a/src/Ryujinx.Common/PreciseSleep/IPreciseSleepEvent.cs b/src/Ryujinx.Common/PreciseSleep/IPreciseSleepEvent.cs
new file mode 100644
index 00000000..26b5ab68
--- /dev/null
+++ b/src/Ryujinx.Common/PreciseSleep/IPreciseSleepEvent.cs
@@ -0,0 +1,38 @@
+using System;
+
+namespace Ryujinx.Common.PreciseSleep
+{
+    /// <summary>
+    /// An event which works similarly to an AutoResetEvent, but is backed by a
+    /// more precise timer that allows waits of less than a millisecond.
+    /// </summary>
+    public interface IPreciseSleepEvent : IDisposable
+    {
+        /// <summary>
+        /// Adjust a timepoint to better fit the host clock.
+        /// When no adjustment is made, the input timepoint will be returned.
+        /// </summary>
+        /// <param name="timePoint">Timepoint to adjust</param>
+        /// <param name="timeoutNs">Requested timeout in nanoseconds</param>
+        /// <returns>Adjusted timepoint</returns>
+        long AdjustTimePoint(long timePoint, long timeoutNs);
+
+        /// <summary>
+        /// Sleep until a timepoint, or a signal is received.
+        /// Given no signal, may wake considerably before, or slightly after the timeout.
+        /// </summary>
+        /// <param name="timePoint">Timepoint to sleep until</param>
+        /// <returns>True if signalled or waited, false if a wait could not be performed</returns>
+        bool SleepUntil(long timePoint);
+
+        /// <summary>
+        /// Sleep until a signal is received.
+        /// </summary>
+        void Sleep();
+
+        /// <summary>
+        /// Signal the event, waking any sleeping thread or the next attempted sleep.
+        /// </summary>
+        void Signal();
+    }
+}