Add new cycle and event based simulator for better performance and associated unit tests

2026-09-04 09:06:29 +02:00 · 2026-03-26 01:16:24 +01:00
parent b1b71a2392
commit aa6d13a46c
17 changed files with 1386 additions and 793 deletions
@@ -0,0 +1,93 @@
+using BenchmarkDotNet.Attributes;
+using StoneRed.LogicSimulator.Simulation;
+
+namespace StoneRed.LogicSimulator.Benchmarks;
+
+[MemoryDiagnoser]
+public class SimulatorBenchmarks
+{
+    private CycleCircuitSimulator cycleSim = null!;
+    private EventCircuitSimulator eventSim = null!;
+    private int cycleSource;
+    private int eventSource;
+    private bool state;
+
+    [Params(0.01, 0.10, 1.00)]
+    public double ActivityPercentage;
+
+    [Params(true, false)]
+    public bool UseLut;
+
+    [GlobalSetup]
+    public void Setup()
+    {
+        cycleSim = new CycleCircuitSimulator();
+        eventSim = new EventCircuitSimulator();
+
+        SetupCircuit(cycleSim, out cycleSource);
+        SetupCircuit(eventSim, out eventSource);
+    }
+
+    private void SetupCircuit(ICircuitSimulator sim, out int source)
+    {
+        var chain10 = new CircuitDefinition();
+        int input = chain10.AddInputPin();
+        int last = input;
+        for (int i = 0; i < 10; i++)
+        {
+            int not = chain10.AddGate(GateKind.Not);
+            chain10.Connect(last, not, 0);
+            last = not;
+        }
+        int output = chain10.AddOutputPin();
+        chain10.Connect(last, output, 0);
+
+        sim.RegisterMacroGate("CHAIN10", chain10);
+        if (UseLut)
+        {
+            sim.ComputeLut("CHAIN10");
+        }
+
+        const int macroCount = 100;
+        int activeMacroCount = Math.Max(1, (int)(macroCount * ActivityPercentage));
+        int idleMacroCount = macroCount - activeMacroCount;
+
+        source = sim.AddGate(GateKind.Source);
+        int constantSource = sim.AddGate(GateKind.Source);
+        int sink = sim.AddGate(GateKind.Sink);
+
+        for (int i = 0; i < activeMacroCount; i++)
+        {
+            var inst = sim.AddMacroGate("CHAIN10");
+            sim.ConnectGates(source, inst.Inputs[0], 0);
+            sim.ConnectGates(inst.Outputs[0], sink, 0);
+        }
+
+        for (int i = 0; i < idleMacroCount; i++)
+        {
+            var inst = sim.AddMacroGate("CHAIN10");
+            sim.ConnectGates(constantSource, inst.Inputs[0], 0);
+            sim.ConnectGates(inst.Outputs[0], sink, 0);
+        }
+
+        sim.Reset();
+        sim.SetSource(constantSource, false);
+        sim.RunUntilStable();
+    }
+
+    [Benchmark]
+    public void CycleBased()
+    {
+        state = !state;
+        cycleSim.SetSource(cycleSource, state);
+        cycleSim.Step();
+    }
+
+    [Benchmark]
+    public void EventDriven()
+    {
+        state = !state;
+        eventSim.SetSource(eventSource, state);
+        eventSim.Step();
+    }
+}