t1 / TFDContents / Assets / Standard Assets / NativeObjectCache.cs @ 9
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#if !(UNITY_WSA_10_0 && NETFX_CORE) |
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using System; |
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using System.Collections.Generic; |
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using System.Runtime.InteropServices; |
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using System.Linq; |
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namespace Helper |
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{
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public static class NativeObjectCache |
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{
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private static object _lock = new object(); |
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private static Dictionary<Type, Dictionary<IntPtr, WeakReference>> _objectCache = new Dictionary<Type, Dictionary<IntPtr, WeakReference>>(); |
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public static void AddObject<T>(IntPtr nativePtr, T obj) where T : class |
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{
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lock (_lock) |
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{
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Dictionary<IntPtr, WeakReference> objCache = null; |
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if (!_objectCache.TryGetValue(typeof(T), out objCache) || objCache == null) |
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{
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objCache = new Dictionary<IntPtr, WeakReference>(); |
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_objectCache[typeof(T)] = objCache; |
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} |
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objCache[nativePtr] = new WeakReference(obj); |
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} |
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} |
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public static void Flush() |
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{
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lock(_lock) |
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{
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foreach (var byType in _objectCache.ToArray()) |
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{
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foreach(var kvp in byType.Value.ToArray()) |
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{
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IDisposable disp = kvp.Value.Target as IDisposable; |
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if(disp != null) |
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{
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disp.Dispose(); |
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} |
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} |
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} |
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} |
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} |
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public static void RemoveObject<T>(IntPtr nativePtr) |
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{
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lock (_lock) |
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{
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Dictionary<IntPtr, WeakReference> objCache = null; |
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if (!_objectCache.TryGetValue(typeof(T), out objCache) || objCache == null) |
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{
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objCache = new Dictionary<IntPtr, WeakReference>(); |
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_objectCache[typeof(T)] = objCache; |
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} |
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if (objCache.ContainsKey(nativePtr)) |
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{
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objCache.Remove(nativePtr); |
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} |
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} |
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} |
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public static T GetObject<T>(IntPtr nativePtr) where T : class |
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{
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lock (_lock) |
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{
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Dictionary<IntPtr, WeakReference> objCache = null; |
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if (!_objectCache.TryGetValue(typeof(T), out objCache) || objCache == null) |
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{
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objCache = new Dictionary<IntPtr, WeakReference>(); |
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_objectCache[typeof(T)] = objCache; |
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} |
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WeakReference reference = null; |
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if (objCache.TryGetValue(nativePtr, out reference)) |
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{
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if (reference != null) |
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{
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T obj = reference.Target as T; |
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if (obj != null) |
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{
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return (T)obj; |
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} |
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} |
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} |
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return null; |
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} |
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} |
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public static T CreateOrGetObject<T>(IntPtr nativePtr, Func<System.IntPtr,T> create) where T : class |
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{
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T outputValue = null; |
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lock (_lock) |
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{
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Dictionary<IntPtr, WeakReference> objCache = null; |
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if (!_objectCache.TryGetValue(typeof(T), out objCache) || objCache == null) |
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{
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objCache = new Dictionary<IntPtr, WeakReference>(); |
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_objectCache[typeof(T)] = objCache; |
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} |
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WeakReference reference = null; |
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if (objCache.TryGetValue(nativePtr, out reference)) |
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{
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if ((reference != null) && reference.IsAlive) |
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{
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outputValue = reference.Target as T; |
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} |
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} |
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if (outputValue == null) |
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{
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if (create != null) |
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{
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outputValue = create(nativePtr); |
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objCache[nativePtr] = new WeakReference(outputValue); |
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} |
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else if(typeof(T) == typeof(System.Object)) |
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{
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//T is an object, so lets just pass back our IntPtr, which is an object. |
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outputValue = (T)(System.Object)nativePtr; |
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} |
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} |
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} |
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return outputValue; |
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} |
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} |
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} |
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#endif |