Split main project into core,graphics and chocolarm4 subproject (#29)

Ryujinx.Core/OsHle/Utilities/IdPool.cs

@@ -0,0 +1,53 @@
+using System.Collections.Generic;
+
+namespace Ryujinx.Core.OsHle.Utilities
+{
+    class IdPool
+    {
+        private HashSet<int> Ids;
+
+        private int CurrId;
+        private int MinId;
+        private int MaxId;
+
+        public IdPool(int Min, int Max)
+        {
+            Ids = new HashSet<int>();
+
+            CurrId = Min;
+            MinId  = Min;
+            MaxId  = Max;
+        }
+
+        public IdPool() : this(1, int.MaxValue) { }
+
+        public int GenerateId()
+        {
+            lock (Ids)
+            {
+                for (int Cnt = MinId; Cnt < MaxId; Cnt++)
+                {
+                    if (Ids.Add(CurrId))
+                    {
+                        return CurrId;
+                    }
+
+                    if (CurrId++ == MaxId)
+                    {
+                        CurrId = MinId;
+                    }
+                }
+
+                return -1;
+            }
+        }
+
+        public bool DeleteId(int Id)
+        {
+            lock (Ids)
+            {
+                return Ids.Remove(Id);
+            }
+        }
+    }
+}