MulAvailable

StgSharpDebug/SlabStressTest.cs

@@ -0,0 +1,82 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="SlabStressTest"
+// Project: StgSharp
+// AuthorGroup: Nitload
+// Copyright (c) Nitload. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.HighPerformance.Memory;
+using System;
+using System.Diagnostics;
+
+namespace StgSharp
+{
+    internal static class SlabStressTest
+    {
+
+        // Exercise the Nonconcurrent Chunked SLAB used by HLSF (allocation/free only)
+        public static unsafe void Run()
+        {
+            Console.WriteLine("=== SLAB Allocator (Chunked) Single-Thread Stress Test ===");
+
+            // Use SLAB with element size of pointer (nuint) to simulate Entry handles
+            SlabAllocator<BunchOfBytes> slab = SlabAllocator<BunchOfBytes>.Create(64, SlabBufferLayout.Chunked, false);
+
+            int cycles = 10;
+            int allocsPerCycle = 200_000; // large enough to force internal growth
+
+            Stopwatch sw = new Stopwatch();
+
+            for (int c = 0; c < cycles; c++)
+            {
+                Console.WriteLine($"--- Cycle {c+1} ---");
+                nuint[] ptrs = new nuint[allocsPerCycle];
+
+                sw.Restart();
+                for (int i = 0; i < allocsPerCycle; i++) {
+                    ptrs[i] = slab.Allocate();
+                }
+                sw.Stop();
+                Console.WriteLine($"Allocate: {allocsPerCycle} in {sw.Elapsed.TotalSeconds:0.00}s");
+
+                sw.Restart();
+                for (int i = 0; i < allocsPerCycle; i++) {
+                    slab.Free(ptrs[i]);
+                }
+                sw.Stop();
+                Console.WriteLine($"Free: {allocsPerCycle} in {sw.Elapsed.TotalSeconds:0.00}s");
+            }
+
+            slab.Dispose();
+            Console.WriteLine("=== SLAB Stress Complete ===");
+        }
+
+        internal unsafe struct BunchOfBytes
+        {
+
+            public fixed byte Data[128];
+
+        }
+
+    }
+}