From 50f18e08e71fef4992fb7df32fdee8ac142f181a Mon Sep 17 00:00:00 2001
From: Michał Klichowicz <emkael@tlen.pl>
Date: Sun, 5 Nov 2023 18:08:51 +0100
Subject: Parallel per-board processing

---
 src/BCDDFile.cs | 107 ++++++++++++++++++++++++++++++++++----------------------
 src/DDTable.cs  |  23 ++++++++++++
 2 files changed, 89 insertions(+), 41 deletions(-)

diff --git a/src/BCDDFile.cs b/src/BCDDFile.cs
index a37ead6..f0e7522 100644
--- a/src/BCDDFile.cs
+++ b/src/BCDDFile.cs
@@ -8,14 +8,19 @@ namespace BCDD
     {
         public List<String> errors;
         private String filename;
+        private PBNFile file;
 
         public static int filesCounter;
         public static ManualResetEvent filesCountdown = new ManualResetEvent(false);
 
+        private int boardCount;
+        private ManualResetEvent boardCountdown;
+
         public BCDDFile(String filename)
         {
             this.errors = new List<String>();
             this.filename = filename;
+            this.file = new PBNFile(filename);
         }
 
         private void error(String message, String boardNo = "")
@@ -32,53 +37,68 @@ namespace BCDD
             Console.WriteLine("ERROR: " + message);
         }
 
+        private void info(String boardNo, String ddTable, ParContract contract)
+        {
+            Console.WriteLine(String.Format("[{0}:{1}] {2} {3}", this.filename, boardNo, ddTable, contract));
+        }
+
+        private void processBoard(object state)
+        {
+            PBNBoard board = state as PBNBoard;
+            DDTable table = new DDTable(board);
+            String boardNo;
+            try
+            {
+                boardNo = board.GetNumber();
+            }
+            catch (FieldNotFoundException)
+            {
+                boardNo = "?";
+            }
+            try
+            {
+                int[,] ddTable = table.GetDDTable();
+                if (ddTable != null)
+                {
+                    ParScore par = new ParScore(board);
+                    ParContract contract = par.GetParContract(ddTable);
+                    board.SaveDDTable(ddTable);
+                    board.SaveParContract(contract);
+                    this.info(boardNo, DDTable.ShortFormat(ddTable), contract);
+                }
+                else
+                {
+                    this.error("unable to determine DD table for board " + boardNo, boardNo);
+                }
+            }
+            catch (DllNotFoundException)
+            {
+                throw;
+            }
+            catch (Exception e)
+            {
+                this.error(e.Message, boardNo);
+            }
+            finally
+            {
+                if (Interlocked.Decrement(ref this.boardCount) == 0)
+                {
+                    this.boardCountdown.Set();
+                }
+            }
+        }
+
         public void analyze(object state)
         {
             try
             {
-                PBNFile file = new PBNFile(filename);
-                foreach (PBNBoard board in file.Boards)
+                this.boardCount = this.file.Boards.Count;
+                this.boardCountdown = new ManualResetEvent(false);
+                foreach (PBNBoard board in this.file.Boards)
                 {
-                    DDTable table = new DDTable(board);
-                    String boardNo;
-                    try
-                    {
-                        boardNo = board.GetNumber();
-                    }
-                    catch (FieldNotFoundException)
-                    {
-                        boardNo = "?";
-                    }
-                    try
-                    {
-                        int[,] ddTable = table.GetDDTable();
-                        if (ddTable != null)
-                        {
-                            ParScore par = new ParScore(board);
-                            ParContract contract = par.GetParContract(ddTable);
-                            board.SaveDDTable(ddTable);
-                            board.SaveParContract(contract);
-                            Console.WriteLine("Board " + boardNo);
-                            DDTable.PrintTable(ddTable);
-                            Console.WriteLine(contract);
-                            Console.WriteLine();
-                        }
-                        else
-                        {
-                            this.error("unable to determine DD table for board " + boardNo, boardNo);
-                        }
-                    }
-                    catch (DllNotFoundException)
-                    {
-                        throw;
-                    }
-                    catch (Exception e)
-                    {
-                        this.error(e.Message, boardNo);
-                    }
-                    file.WriteBoard(board);
+                    ThreadPool.QueueUserWorkItem(new WaitCallback(this.processBoard), board);
                 }
-                file.Save();
+                boardCountdown.WaitOne();
             }
             catch (DllNotFoundException)
             {
@@ -91,6 +111,11 @@ namespace BCDD
             }
             finally
             {
+                foreach (PBNBoard board in this.file.Boards) {
+                    this.file.WriteBoard(board);
+                }
+                Console.WriteLine(String.Format("Saving file {0}", this.filename));
+                this.file.Save();
                 if (Interlocked.Decrement(ref BCDDFile.filesCounter) == 0)
                 {
                     BCDDFile.filesCountdown.Set();
diff --git a/src/DDTable.cs b/src/DDTable.cs
index c2ffcd1..1e21cee 100644
--- a/src/DDTable.cs
+++ b/src/DDTable.cs
@@ -152,5 +152,28 @@ namespace BCDD
                 Console.WriteLine();
             }
         }
+
+        public static string ShortFormat(int[,] ddTable)
+        {
+            StringBuilder s = new StringBuilder();
+            for (int i = 0; i < 4; i++)
+            {
+                s.Append(BCalcWrapper.PLAYERS[i]);
+                s.Append(" ");
+                for (int j = 0; j < 5; j++)
+                {
+                    s.Append(ddTable[i, j]);
+                    if (j < 4)
+                    {
+                        s.Append("-");
+                    }
+                }
+                if (i < 3)
+                {
+                    s.Append(" ");
+                }
+            }
+            return s.ToString();
+        }
     }
 }
-- 
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