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   "source": [
    "在多语言笔记中使用 BenchmarkDotnet 基准测试\n",
    "========================================="
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 全局准备工作，就先执行此单元\n",
    "+ 设置包源和引用 Nuget 包\n",
    "+ 引入命名空间\n",
    "  "
   ]
  },
  {
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   "execution_count": null,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
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   "source": [
    "#i \"nuget:https://api.nuget.org/v3/index.json\"\n",
    "#r \"nuget:BenchmarkDotNet,*-*\"\n",
    "\n",
    "using System;\n",
    "using System.Collections.Generic;\n",
    "using System.Linq;\n",
    "using System.Text;\n",
    "using System.Threading;\n",
    "using System.Threading.Channels;\n",
    "using System.Threading.Tasks;\n",
    "\n",
    "using BenchmarkDotNet;\n",
    "using BenchmarkDotNet.Attributes;\n",
    "using BenchmarkDotNet.Running;\n",
    "using BenchmarkDotNet.Jobs;\n",
    "using BenchmarkDotNet.Diagnosers;\n",
    "using BenchmarkDotNet.Configs;"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 方法一：在笔记本内部，使用基准测试"
   ]
  },
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   "source": [
    "/// <summary>\n",
    "/// 被测试类：计数器\n",
    "/// </summary>\n",
    "public class Counter\n",
    "{\n",
    "    /// <summary>\n",
    "    /// 总次数\n",
    "    /// </summary>\n",
    "    public static int TotalCounter = 0;\n",
    "\n",
    "    /// <summary>\n",
    "    /// 每方法执行次数\n",
    "    /// </summary>\n",
    "    public static readonly int LoopNumber = 100;\n",
    "\n",
    "    /// <summary>\n",
    "    /// 累加方法\n",
    "    /// </summary>\n",
    "    public int Increment()\n",
    "    {\n",
    "        for (int i = 1; i <= LoopNumber; i++)\n",
    "        {\n",
    "            ++TotalCounter;\n",
    "        }\n",
    "\n",
    "        return TotalCounter;\n",
    "    }\n",
    "\n",
    "    /// <summary>\n",
    "    /// 累加方法\n",
    "    /// </summary>\n",
    "    public int IncrementWithInterlocked()\n",
    "    {\n",
    "        for (int i = 1; i <= LoopNumber; i++)\n",
    "        {\n",
    "            Interlocked.Increment(ref TotalCounter);\n",
    "        }\n",
    "\n",
    "        return TotalCounter;\n",
    "    }\n",
    "}\n",
    "\n",
    "/// <summary>\n",
    "/// 基准测试类：CounterBenchmark\n",
    "/// </summary>\n",
    "public class CounterBenchmark\n",
    "{\n",
    "    [Benchmark]\n",
    "    public void NonThreadSafe_Test()\n",
    "    {\n",
    "        Counter counter = new Counter();\n",
    "\n",
    "        List<Thread> threads = new List<Thread>()\n",
    "            {\n",
    "                new Thread(() => counter.Increment() ),\n",
    "                new Thread(() => counter.Increment() ),\n",
    "            };\n",
    "\n",
    "\n",
    "        threads.ForEach(t => t.Start());\n",
    "        threads.ForEach(t => t.Join());\n",
    "\n",
    "        //Console.WriteLine($\"方法结束时：TotalCounter = {Counter.TotalCounter}\");\n",
    "    }\n",
    "\n",
    "    [Benchmark]\n",
    "    public void ThreadSafe_Test()\n",
    "    {\n",
    "        Counter counter = new Counter();\n",
    "\n",
    "        List<Thread> threads = new List<Thread>()\n",
    "        {\n",
    "            new Thread(() => counter.IncrementWithInterlocked() ),\n",
    "            new Thread(() => counter.IncrementWithInterlocked() ),\n",
    "        };\n",
    "\n",
    "        threads.ForEach(t => t.Start());\n",
    "        threads.ForEach(t => t.Join());\n",
    "    }\n",
    "}\n",
    "\n",
    "//执行基准测试\n",
    "{\n",
    "    //设置基准测试参数：注意参数名与参数值是两个参数而不是一个\n",
    "    var benchmarkRunArgs  = new string[] {\"--filter\",\"*CounterBenchmark.ThreadSafe_Test\"};\n",
    "\n",
    "    //出错方法：此种方式执行出错，暂时没有找到解决方法\n",
    "    //var summary = BenchmarkRunner.Run<CounterBenchmark>(null, benchmarkRunArgs);\n",
    "    \n",
    "    //可行方法：注意参数配置方法\n",
    "    BenchmarkSwitcher.FromAssembly(typeof(CounterBenchmark).Assembly).Run(benchmarkRunArgs, new DebugInProcessConfig());\n",
    "}\n"
   ]
  },
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   "attachments": {},
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   "metadata": {},
   "source": [
    "## 方法二：Powershell 直接执行实有的其测试项目"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "需要根据项目本身的运行方法来定:关键是Notebook中不能弹出输入框输入指定的数据，如果不弹窗输入都是可以的\n",
    "+ BenchmarkRunner.Run<CounterBenchmark>()\n",
    "+ BenchmarkSwitcher.FromAssembly(Assembly).Run() 这种命令行后面要有过滤参数，否则不能弹窗输入的情况下，不能运行。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "dotnet_interactive": {
     "language": "pwsh"
    },
    "polyglot_notebook": {
     "kernelName": "pwsh"
    }
   },
   "outputs": [],
   "source": [
    "# 注意参数 -- 后面的参数传递给应用程序即应用程序Main方法的args参数，而不是 dotnet run 命令本身\n",
    "dotnet run -c Release --project \"..\\BenchMarkDotnetStudy.BenchmarkStudy\\BenchMarkDotnetStudy.BenchmarkStudy.csproj\" -- --filter *CounterTest3.Thread2_Test"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "当前程序内核程序集信息"
   ]
  }
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