daily update on 20240320 by nitload youmu

源代码/StgSharp/Logic/TimeSpanProvider.cs

@@ -32,6 +32,7 @@ using StgSharpDebug.Logic;
 
 using System;
 using System.Linq;
+using System.Threading;
 
 namespace StgSharp
 {
@@ -48,7 +49,8 @@ namespace StgSharp
         private long _spanBegin;
         private readonly long _spanLength;
         private bool _subscribed;
-        private Counter<uint> timeSpanCount = new Counter<uint>(0, 1, 1);
+        private Counter<int> timeSpanCount = new Counter<int>(-1, 1, 1);
+        private SemaphoreSlim _refreshSemaphore = new SemaphoreSlim(0,1);
 
         /// <summary>
         /// Create a new <see cref="TimeSpanProvider"/> and define the length of time span. Length of a single time span is defined in microseconds.
@@ -61,19 +63,36 @@ namespace StgSharp
             provider.AddSubscriber(this);
             _subscribed = true;
         }
+
+        /// <summary>
+        /// Create a new <see cref="TimeSpanProvider"/> and define the length of time span. 
+        /// Length of a single time span is defined in seconds.
+        /// </summary>
+        /// <param name="spanLength"></param>
+        /// <parma name="provider"></parma>
+        public TimeSpanProvider(double spanLength, TimeSourceProviderBase provider)
+        {
+            _spanLength = ((int)spanLength) * 1000L * 1000L; _spanBegin = -_spanLength;
+            provider.AddSubscriber(this);
+            _subscribed = true;
+        }
+
         /// <summary>
         /// Create a new <see cref="TimeSpanProvider"/> and define the length of time span. Length of a single time span is defined in microseconds.
         /// </summary>
         /// <param name="spanLength"></param>
         /// <parma name="provider"></parma>
-        public TimeSpanProvider(long spanLength, uint maxSpan, TimeSourceProviderBase provider)
+        public TimeSpanProvider(long spanLength, int maxSpan, TimeSourceProviderBase provider)
         {
-            _spanLength = spanLength;
+            if (maxSpan <= 0)
+            {
+                maxSpan = int.MaxValue; 
+            }
+            _spanLength = spanLength; _spanBegin = -_spanLength;
             provider.AddSubscriber(this);
             _subscribed = true;
         }
 
-
         /// <summary>
         /// Time source provider provided in <see cref="StgSharp"/> internal framework.
         /// </summary>
@@ -105,15 +124,39 @@ namespace StgSharp
             {
                 _spanBegin = microseconds;
                 timeSpanCount++;
-            }
-            if (timeSpanCount > _maxSpanCount)
-            {
-                return false;
+                try
+                {
+                    _refreshSemaphore.Release();
+                }
+                catch(SemaphoreFullException ex)
+                {
+                    if (_frameUpdateMissCallback != null)
+                    {
+                        _frameUpdateMissCallback(ex);
+                    }
+                }
+                if (timeSpanCount > _maxSpanCount)
+                {
+                    return false;
+                }
             }
             return true;
         }
 
-        public static implicit operator uint(TimeSpanProvider provider)
+        private Action<SemaphoreFullException> _frameUpdateMissCallback = null;
+
+        public Action<SemaphoreFullException> FrameUpdateMissCallback
+        {
+            get { return _frameUpdateMissCallback; } 
+            set { _frameUpdateMissCallback = value;}
+        }
+
+        public void WaitNextSpan()
+        {
+            _refreshSemaphore.Wait();
+        }
+
+        public static implicit operator int(TimeSpanProvider provider)
         {
             return provider.timeSpanCount.Value;
         }