From ac398ac31bd670ff554f5cd6a414f5e3c317953e Mon Sep 17 00:00:00 2001
From: Christian Speckner <christian.speckner@mayflower.de>
Date: Wed, 27 Feb 2019 23:41:08 +0100
Subject: [PATCH] Profiling.

---
 src/emucore/ProfilingRunner.cxx               | 83 ++++++++++++++++++-
 src/emucore/ProfilingRunner.hxx               | 17 ++++
 .../tia/frame-manager/DummyFrameManager.hxx   | 25 ++++++
 3 files changed, 124 insertions(+), 1 deletion(-)
 create mode 100644 src/emucore/tia/frame-manager/DummyFrameManager.hxx

diff --git a/src/emucore/ProfilingRunner.cxx b/src/emucore/ProfilingRunner.cxx
index 288f3f3cf..b928e63f6 100644
--- a/src/emucore/ProfilingRunner.cxx
+++ b/src/emucore/ProfilingRunner.cxx
@@ -15,13 +15,42 @@
 // this file, and for a DISCLAIMER OF ALL WARRANTIES.
 //============================================================================
 
+#include <chrono>
+
 #include "ProfilingRunner.hxx"
 #include "FSNode.hxx"
 #include "CartDetector.hxx"
 #include "Cart.hxx"
 #include "MD5.hxx"
+#include "Control.hxx"
+#include "M6502.hxx"
+#include "M6532.hxx"
+#include "TIA.hxx"
+#include "ConsoleTiming.hxx"
+#include "DummyFrameManager.hxx"
+#include "System.hxx"
+#include "Joystick.hxx"
+#include "Random.hxx"
+#include "DispatchResult.hxx"
+
+using namespace std::chrono;
+
+namespace {
+  static constexpr uInt32 RUNTIME_DEFAULT = 60;
+  static constexpr uInt32 cyclesPerSecond = 262 * 76 * 60;
+
+  void updateProgress(uInt32 from, uInt32 to) {
+    while (from < to) {
+      if (from % 10 == 0 && from > 0) cout << from << "%";
+      else cout << ".";
+
+      cout.flush();
+
+      from++;
+    }
+  }
+}
 
-static constexpr uInt32 RUNTIME_DEFAULT = 60;
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 ProfilingRunner::ProfilingRunner(int argc, char* argv[])
@@ -83,5 +112,57 @@ bool ProfilingRunner::runOne(const ProfilingRun run)
     return false;
   }
 
+  IO consoleIO;
+  Random rng(0);
+  Event event;
+  DummyFrameManager frameManager;
+
+  M6502 cpu(mySettings);
+  M6532 riot(consoleIO, mySettings);
+  TIA tia(consoleIO, []() { return ConsoleTiming::ntsc; }, mySettings);
+  System system(rng, cpu, riot, tia, *cartridge);
+
+  consoleIO.myLeftControl = make_unique<Joystick>(Controller::Left, event, system);
+  consoleIO.myRightControl = make_unique<Joystick>(Controller::Right, event, system);
+  consoleIO.mySwitches = make_unique<Switches>(event, myProps, mySettings);
+
+  tia.setFrameManager(&frameManager);
+  tia.bindToControllers();
+  cartridge->setStartBankFromPropsFunc([]() { return -1; });
+
+  system.initialize();
+  system.reset();
+
+  uInt64 cycles = 0;
+  uInt64 cyclesTarget = run.runtime * cyclesPerSecond;
+
+  DispatchResult dispatchResult;
+  dispatchResult.setOk(0);
+
+  uInt32 percent = 0;
+  (cout << "0%").flush();
+
+  time_point<high_resolution_clock> tp = high_resolution_clock::now();
+
+  while (cycles < cyclesTarget && dispatchResult.getStatus() == DispatchResult::Status::ok) {
+    tia.update(dispatchResult);
+    cycles += dispatchResult.getCycles();
+
+    uInt32 percentNow = std::min((100 * cycles) / cyclesTarget, static_cast<uInt64>(100));
+    updateProgress(percent, percentNow);
+
+    percent = percentNow;
+  }
+
+  double realtimeUsed = duration_cast<duration<double>>(high_resolution_clock::now () - tp).count();
+
+  if (dispatchResult.getStatus() != DispatchResult::Status::ok) {
+    cout << endl << "ERROR: emulation failed after " << cycles << " cycles";
+    return false;
+  }
+
+  (cout << "100%" << endl).flush();
+  cout << "real time: " << realtimeUsed << " seconds" << endl;
+
   return true;
 }
diff --git a/src/emucore/ProfilingRunner.hxx b/src/emucore/ProfilingRunner.hxx
index 18bdaea3f..6c63de49a 100644
--- a/src/emucore/ProfilingRunner.hxx
+++ b/src/emucore/ProfilingRunner.hxx
@@ -18,8 +18,13 @@
 #ifndef PROFILING_RUNNER
 #define PROFILING_RUNNER
 
+class Control;
+class Switches;
+
 #include "bspf.hxx"
 #include "Settings.hxx"
+#include "ConsoleIO.hxx"
+#include "Props.hxx"
 
 class ProfilingRunner {
   public:
@@ -35,6 +40,16 @@ class ProfilingRunner {
       uInt32 runtime;
     };
 
+    struct IO: public ConsoleIO {
+        Controller& leftController() const override { return *myLeftControl; }
+        Controller& rightController() const override { return *myRightControl; }
+        Switches& switches() const override { return *mySwitches; }
+
+        unique_ptr<Controller> myLeftControl;
+        unique_ptr<Controller> myRightControl;
+        unique_ptr<Switches> mySwitches;
+    };
+
   private:
 
     bool runOne(const ProfilingRun run);
@@ -44,6 +59,8 @@ class ProfilingRunner {
     vector<ProfilingRun> profilingRuns;
 
     Settings mySettings;
+
+    Properties myProps;
 };
 
 #endif // PROFILING_RUNNER
diff --git a/src/emucore/tia/frame-manager/DummyFrameManager.hxx b/src/emucore/tia/frame-manager/DummyFrameManager.hxx
new file mode 100644
index 000000000..9668f8b1d
--- /dev/null
+++ b/src/emucore/tia/frame-manager/DummyFrameManager.hxx
@@ -0,0 +1,25 @@
+//============================================================================
+//
+//   SSSS    tt          lll  lll
+//  SS  SS   tt           ll   ll
+//  SS     tttttt  eeee   ll   ll   aaaa
+//   SSSS    tt   ee  ee  ll   ll      aa
+//      SS   tt   eeeeee  ll   ll   aaaaa  --  "An Atari 2600 VCS Emulator"
+//  SS  SS   tt   ee      ll   ll  aa  aa
+//   SSSS     ttt  eeeee llll llll  aaaaa
+//
+// Copyright (c) 1995-2019 by Bradford W. Mott, Stephen Anthony
+// and the Stella Team
+//
+// See the file "License.txt" for information on usage and redistribution of
+// this file, and for a DISCLAIMER OF ALL WARRANTIES.
+//============================================================================
+
+#ifndef TIA_DUMMY_FRAME_MANAGER
+#define TIA_DUMMY_FRAME_MANAGER
+
+#include "AbstractFrameManager.hxx"
+
+class DummyFrameManager: public AbstractFrameManager {};
+
+#endif // TIA_DUMMY_FRAME_MANAGER