{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "af4bafb3",
   "metadata": {},
   "source": [
    "# rf506_msgservice\n",
    "Organisation and simultaneous fits: tuning and customizing the RooFit message logging facility\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "**Author:** Wouter Verkerke  \n",
    "<i><small>This notebook tutorial was automatically generated with <a href= \"https://github.com/root-project/root/blob/master/documentation/doxygen/converttonotebook.py\">ROOTBOOK-izer</a> from the macro found in the ROOT repository  on Tuesday, May 19, 2026 at 08:32 PM.</small></i>"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "971f271b",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:21.751163Z",
     "iopub.status.busy": "2026-05-19T20:32:21.751053Z",
     "iopub.status.idle": "2026-05-19T20:32:21.765590Z",
     "shell.execute_reply": "2026-05-19T20:32:21.764938Z"
    }
   },
   "outputs": [],
   "source": [
    "%%cpp -d\n",
    "#include \"RooRealVar.h\"\n",
    "#include \"RooDataSet.h\"\n",
    "#include \"RooGaussian.h\"\n",
    "#include \"RooPolynomial.h\"\n",
    "#include \"RooAddPdf.h\"\n",
    "#include \"TCanvas.h\"\n",
    "#include \"TAxis.h\"\n",
    "#include \"RooPlot.h\"\n",
    "#include \"RooMsgService.h\"\n",
    "\n",
    "using namespace RooFit;"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "49c83294",
   "metadata": {},
   "source": [
    "Create pdf\n",
    "--------------------"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "1545e8ea",
   "metadata": {},
   "source": [
    "Construct gauss(x,m,s)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "6ca22413",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:21.768573Z",
     "iopub.status.busy": "2026-05-19T20:32:21.768446Z",
     "iopub.status.idle": "2026-05-19T20:32:22.132812Z",
     "shell.execute_reply": "2026-05-19T20:32:22.132237Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[#0] WARNING:InputArguments -- The parameter 's' with range [-10, 10] of the RooGaussian 'g' exceeds the safe range of (0, inf). Advise to limit its range.\n"
     ]
    }
   ],
   "source": [
    "RooRealVar x(\"x\", \"x\", -10, 10);\n",
    "RooRealVar m(\"m\", \"m\", 0, -10, 10);\n",
    "RooRealVar s(\"s\", \"s\", 1, -10, 10);\n",
    "RooGaussian gauss(\"g\", \"g\", x, m, s);"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "1e3a1e26",
   "metadata": {},
   "source": [
    "Construct poly(x,p0)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "8e904753",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:22.134045Z",
     "iopub.status.busy": "2026-05-19T20:32:22.133932Z",
     "iopub.status.idle": "2026-05-19T20:32:22.367785Z",
     "shell.execute_reply": "2026-05-19T20:32:22.367077Z"
    }
   },
   "outputs": [],
   "source": [
    "RooRealVar p0(\"p0\", \"p0\", 0.01, 0., 1.);\n",
    "RooPolynomial poly(\"p\", \"p\", x, p0);"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "f31a50fd",
   "metadata": {},
   "source": [
    "Construct model = f*gauss(x) + (1-f)*poly(x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "9272fefd",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:22.369345Z",
     "iopub.status.busy": "2026-05-19T20:32:22.369210Z",
     "iopub.status.idle": "2026-05-19T20:32:22.578559Z",
     "shell.execute_reply": "2026-05-19T20:32:22.577967Z"
    }
   },
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "input_line_51:5:1: warning: 'data' shadows a declaration with the same name in the 'std' namespace; use '::data' to reference this declaration\n",
      "std::unique_ptr<RooDataSet> data{model.generate(x, 10)};\n",
      "^\n"
     ]
    }
   ],
   "source": [
    "RooRealVar f(\"f\", \"f\", 0.5, 0., 1.);\n",
    "RooAddPdf model(\"model\", \"model\", RooArgSet(gauss, poly), f);\n",
    "\n",
    "std::unique_ptr<RooDataSet> data{model.generate(x, 10)};"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "e3561ba6",
   "metadata": {},
   "source": [
    "Print configuration of message service\n",
    "---------------------------------------------------------------------------"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "1bcfe006",
   "metadata": {},
   "source": [
    "Print streams configuration"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "94f2850b",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:22.583232Z",
     "iopub.status.busy": "2026-05-19T20:32:22.583066Z",
     "iopub.status.idle": "2026-05-19T20:32:22.792411Z",
     "shell.execute_reply": "2026-05-19T20:32:22.792030Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Active Message streams\n",
      "[0] MinLevel = PROGRESS Topic = Generation Minimization Plotting Fitting Integration LinkStateMgmt Eval Caching Optimization ObjectHandling InputArguments Tracing Contents DataHandling NumericIntegration FastEvaluations \n",
      "[1] MinLevel = INFO Topic = Minimization Plotting Fitting Eval Caching ObjectHandling InputArguments DataHandling NumericIntegration \n",
      "[2] MinLevel = INFO Topic = HistFactory \n",
      "\n"
     ]
    }
   ],
   "source": [
    "RooMsgService::instance().Print();\n",
    "cout << endl;"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "267e5a4d",
   "metadata": {},
   "source": [
    "Adding Integration topic to existing INFO stream\n",
    "-----------------------------------------------------------------------------------------------"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "aaea67d1",
   "metadata": {},
   "source": [
    "Print streams configuration"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "4b702449",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:22.793681Z",
     "iopub.status.busy": "2026-05-19T20:32:22.793542Z",
     "iopub.status.idle": "2026-05-19T20:32:23.002149Z",
     "shell.execute_reply": "2026-05-19T20:32:23.001688Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Active Message streams\n",
      "[0] MinLevel = PROGRESS Topic = Generation Minimization Plotting Fitting Integration LinkStateMgmt Eval Caching Optimization ObjectHandling InputArguments Tracing Contents DataHandling NumericIntegration FastEvaluations \n",
      "[1] MinLevel = INFO Topic = Minimization Plotting Fitting Eval Caching ObjectHandling InputArguments DataHandling NumericIntegration \n",
      "[2] MinLevel = INFO Topic = HistFactory \n",
      "\n"
     ]
    }
   ],
   "source": [
    "RooMsgService::instance().Print();\n",
    "cout << endl;"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "d2acaf67",
   "metadata": {},
   "source": [
    "Add Integration topic to existing INFO stream"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "993ec30d",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:23.003380Z",
     "iopub.status.busy": "2026-05-19T20:32:23.003267Z",
     "iopub.status.idle": "2026-05-19T20:32:23.211727Z",
     "shell.execute_reply": "2026-05-19T20:32:23.211184Z"
    }
   },
   "outputs": [],
   "source": [
    "RooMsgService::instance().getStream(1).addTopic(Integration);"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "562dcad5",
   "metadata": {},
   "source": [
    "Construct integral over gauss to demonstrate new message stream"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "20951862",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:23.213089Z",
     "iopub.status.busy": "2026-05-19T20:32:23.212976Z",
     "iopub.status.idle": "2026-05-19T20:32:23.421553Z",
     "shell.execute_reply": "2026-05-19T20:32:23.421138Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[#1] INFO:Integration -- RooRealIntegral::ctor(g_Int[x]) Constructing integral of function g over observables(x) with normalization () with range identifier <none>\n",
      "[#1] INFO:Integration -- g: Observable x is suitable for analytical integration (if supported by p.d.f)\n",
      "[#1] INFO:Integration -- g: Function integrated observables (x) internally with code 1\n",
      "[#1] INFO:Integration -- g: Observables (x) are analytically integrated with code 1\n",
      "RooRealIntegral::g_Int[x][ Int gd[Ana](x) ] = 2.50663\n"
     ]
    }
   ],
   "source": [
    "std::unique_ptr<RooAbsReal> igauss{gauss.createIntegral(x)};\n",
    "igauss->Print();"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "f3d6b86d",
   "metadata": {},
   "source": [
    "Print streams configuration in verbose, which also shows inactive streams"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "386edf1b",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:23.422883Z",
     "iopub.status.busy": "2026-05-19T20:32:23.422761Z",
     "iopub.status.idle": "2026-05-19T20:32:23.631471Z",
     "shell.execute_reply": "2026-05-19T20:32:23.631002Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\n",
      "Active Message streams\n",
      "[0] MinLevel = PROGRESS Topic = Generation Minimization Plotting Fitting Integration LinkStateMgmt Eval Caching Optimization ObjectHandling InputArguments Tracing Contents DataHandling NumericIntegration FastEvaluations \n",
      "[1] MinLevel = INFO Topic = Minimization Plotting Fitting Integration Eval Caching ObjectHandling InputArguments DataHandling NumericIntegration \n",
      "[2] MinLevel = INFO Topic = HistFactory \n",
      "\n"
     ]
    }
   ],
   "source": [
    "cout << endl;\n",
    "RooMsgService::instance().Print();\n",
    "cout << endl;"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "296afcab",
   "metadata": {},
   "source": [
    "Remove stream"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "84910599",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:23.632690Z",
     "iopub.status.busy": "2026-05-19T20:32:23.632550Z",
     "iopub.status.idle": "2026-05-19T20:32:23.840954Z",
     "shell.execute_reply": "2026-05-19T20:32:23.840408Z"
    }
   },
   "outputs": [],
   "source": [
    "RooMsgService::instance().getStream(1).removeTopic(Integration);"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "5128890b",
   "metadata": {},
   "source": [
    "Examples of pdf value tracing stream\n",
    "-----------------------------------------------------------------------"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "4e9b8291",
   "metadata": {},
   "source": [
    "Show DEBUG level message on function tracing, trace RooGaussian only"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "id": "e9641fad",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:23.842320Z",
     "iopub.status.busy": "2026-05-19T20:32:23.842209Z",
     "iopub.status.idle": "2026-05-19T20:32:24.047532Z",
     "shell.execute_reply": "2026-05-19T20:32:24.047022Z"
    }
   },
   "outputs": [],
   "source": [
    "RooMsgService::instance().addStream(DEBUG, Topic(Tracing), ClassName(\"RooGaussian\"));"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "a3732170",
   "metadata": {},
   "source": [
    "Perform a fit to generate some tracing messages"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "2690e19e",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:24.048944Z",
     "iopub.status.busy": "2026-05-19T20:32:24.048827Z",
     "iopub.status.idle": "2026-05-19T20:32:24.258011Z",
     "shell.execute_reply": "2026-05-19T20:32:24.257590Z"
    }
   },
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "input_line_59:2:15: error: reference to 'data' is ambiguous\n",
      " model.fitTo(*data, Verbose(true));\n",
      "              ^\n",
      "input_line_51:5:29: note: candidate found by name lookup is 'data'\n",
      "std::unique_ptr<RooDataSet> data{model.generate(x, 10)};\n",
      "                            ^\n",
      "/usr/lib/gcc/x86_64-redhat-linux/14/../../../../include/c++/14/bits/range_access.h:344:5: note: candidate found by name lookup is 'std::data'\n",
      "    data(initializer_list<_Tp> __il) noexcept\n",
      "    ^\n",
      "/usr/lib/gcc/x86_64-redhat-linux/14/../../../../include/c++/14/bits/range_access.h:312:5: note: candidate found by name lookup is 'std::data'\n",
      "    data(_Container& __cont) noexcept(noexcept(__cont.data()))\n",
      "    ^\n",
      "/usr/lib/gcc/x86_64-redhat-linux/14/../../../../include/c++/14/bits/range_access.h:323:5: note: candidate found by name lookup is 'std::data'\n",
      "    data(const _Container& __cont) noexcept(noexcept(__cont.data()))\n",
      "    ^\n",
      "/usr/lib/gcc/x86_64-redhat-linux/14/../../../../include/c++/14/bits/range_access.h:334:5: note: candidate found by name lookup is 'std::data'\n",
      "    data(_Tp (&__array)[_Nm]) noexcept\n",
      "    ^\n"
     ]
    }
   ],
   "source": [
    "model.fitTo(*data, Verbose(true));"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "5651afbb",
   "metadata": {},
   "source": [
    "Reset message service to default stream configuration"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "56c2459f",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:24.259166Z",
     "iopub.status.busy": "2026-05-19T20:32:24.259059Z",
     "iopub.status.idle": "2026-05-19T20:32:24.467205Z",
     "shell.execute_reply": "2026-05-19T20:32:24.466719Z"
    }
   },
   "outputs": [],
   "source": [
    "RooMsgService::instance().reset();"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "95e1bcae",
   "metadata": {},
   "source": [
    "Show DEBUG level message on function tracing on all objects, redirect output to file"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "id": "041f66e5",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:24.469483Z",
     "iopub.status.busy": "2026-05-19T20:32:24.469367Z",
     "iopub.status.idle": "2026-05-19T20:32:24.674923Z",
     "shell.execute_reply": "2026-05-19T20:32:24.674385Z"
    }
   },
   "outputs": [],
   "source": [
    "RooMsgService::instance().addStream(DEBUG, Topic(Tracing), OutputFile(\"rf506_debug.log\"));"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3c0666e8",
   "metadata": {},
   "source": [
    "Perform a fit to generate some tracing messages"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "940e455d",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:24.676380Z",
     "iopub.status.busy": "2026-05-19T20:32:24.676271Z",
     "iopub.status.idle": "2026-05-19T20:32:24.886115Z",
     "shell.execute_reply": "2026-05-19T20:32:24.885657Z"
    }
   },
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "input_line_62:2:15: error: reference to 'data' is ambiguous\n",
      " model.fitTo(*data, Verbose(true));\n",
      "              ^\n",
      "input_line_51:5:29: note: candidate found by name lookup is 'data'\n",
      "std::unique_ptr<RooDataSet> data{model.generate(x, 10)};\n",
      "                            ^\n",
      "/usr/lib/gcc/x86_64-redhat-linux/14/../../../../include/c++/14/bits/range_access.h:344:5: note: candidate found by name lookup is 'std::data'\n",
      "    data(initializer_list<_Tp> __il) noexcept\n",
      "    ^\n",
      "/usr/lib/gcc/x86_64-redhat-linux/14/../../../../include/c++/14/bits/range_access.h:312:5: note: candidate found by name lookup is 'std::data'\n",
      "    data(_Container& __cont) noexcept(noexcept(__cont.data()))\n",
      "    ^\n",
      "/usr/lib/gcc/x86_64-redhat-linux/14/../../../../include/c++/14/bits/range_access.h:323:5: note: candidate found by name lookup is 'std::data'\n",
      "    data(const _Container& __cont) noexcept(noexcept(__cont.data()))\n",
      "    ^\n",
      "/usr/lib/gcc/x86_64-redhat-linux/14/../../../../include/c++/14/bits/range_access.h:334:5: note: candidate found by name lookup is 'std::data'\n",
      "    data(_Tp (&__array)[_Nm]) noexcept\n",
      "    ^\n"
     ]
    }
   ],
   "source": [
    "model.fitTo(*data, Verbose(true));"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "b646adf7",
   "metadata": {},
   "source": [
    "Reset message service to default stream configuration"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "04f025b7",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:24.892997Z",
     "iopub.status.busy": "2026-05-19T20:32:24.892877Z",
     "iopub.status.idle": "2026-05-19T20:32:25.101050Z",
     "shell.execute_reply": "2026-05-19T20:32:25.100459Z"
    }
   },
   "outputs": [],
   "source": [
    "RooMsgService::instance().reset();"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "d8b01492",
   "metadata": {},
   "source": [
    "Example of another debugging stream\n",
    "---------------------------------------------------------------------"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "ceb540e4",
   "metadata": {},
   "source": [
    "Show DEBUG level messages on client/server link state management"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "329c1787",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:25.103113Z",
     "iopub.status.busy": "2026-05-19T20:32:25.103002Z",
     "iopub.status.idle": "2026-05-19T20:32:25.308922Z",
     "shell.execute_reply": "2026-05-19T20:32:25.308493Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "All Message streams\n",
      "[0] MinLevel = PROGRESS Topic = Generation Minimization Plotting Fitting Integration LinkStateMgmt Eval Caching Optimization ObjectHandling InputArguments Tracing Contents DataHandling NumericIntegration FastEvaluations \n",
      "[1] MinLevel = INFO Topic = Minimization Plotting Fitting Eval Caching ObjectHandling InputArguments DataHandling NumericIntegration \n",
      "[2] MinLevel = INFO Topic = HistFactory \n",
      "[3] MinLevel = DEBUG Topic = LinkStateMgmt \n"
     ]
    }
   ],
   "source": [
    "RooMsgService::instance().addStream(DEBUG, Topic(LinkStateMgmt));\n",
    "RooMsgService::instance().Print(\"v\");"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "80bcf7b5",
   "metadata": {},
   "source": [
    "Clone composite pdf g to trigger some link state management activity"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "ba9da966",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:25.310131Z",
     "iopub.status.busy": "2026-05-19T20:32:25.310024Z",
     "iopub.status.idle": "2026-05-19T20:32:25.518802Z",
     "shell.execute_reply": "2026-05-19T20:32:25.518364Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[#3] DEBUG:LinkStateMgmt -- RooAbsArg::addServer(0x7f7dc19dc740,g): adding server x(0x7f7e1176d000) for value \n",
      "[#3] DEBUG:LinkStateMgmt -- RooAbsArg::addServer(0x7f7dc19dc740,g): adding server m(0x7f7e1176d3e8) for value \n",
      "[#3] DEBUG:LinkStateMgmt -- RooAbsArg::addServer(0x7f7dc19dc740,g): adding server s(0x7f7e1176d7d0) for value \n",
      "[#3] DEBUG:LinkStateMgmt -- RooAbsArg::addServer(0x7f7dc19dc740,g): adding server x(0x7f7e1176d000) for value \n",
      "[#3] DEBUG:LinkStateMgmt -- RooAbsArg::addServer(0x7f7dc19dc740,g): adding server m(0x7f7e1176d3e8) for value \n",
      "[#3] DEBUG:LinkStateMgmt -- RooAbsArg::addServer(0x7f7dc19dc740,g): adding server s(0x7f7e1176d7d0) for value \n",
      "RooGaussian::g[ x=x mean=m sigma=s ] = 1\n"
     ]
    }
   ],
   "source": [
    "RooAbsArg *gprime = gauss.cloneTree();\n",
    "gprime->Print();"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3d2e9953",
   "metadata": {},
   "source": [
    "Reset message service to default stream configuration"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "1ad1f673",
   "metadata": {
    "collapsed": false,
    "execution": {
     "iopub.execute_input": "2026-05-19T20:32:25.519994Z",
     "iopub.status.busy": "2026-05-19T20:32:25.519886Z",
     "iopub.status.idle": "2026-05-19T20:32:25.728015Z",
     "shell.execute_reply": "2026-05-19T20:32:25.727503Z"
    }
   },
   "outputs": [],
   "source": [
    "RooMsgService::instance().reset();"
   ]
  }
 ],
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   "display_name": "ROOT C++",
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   "file_extension": ".C",
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