From 142a91ac9abcc888618ec545afd8bd7193f93a82 Mon Sep 17 00:00:00 2001
From: Michael Oborne <mich146@hotmail.com>
Date: Tue, 8 Aug 2023 15:51:59 +1000
Subject: [PATCH] LogBrowse: limit impact of many params to 100000

---
 ExtLibs/Utilities/DFLogBuffer.cs | 19 +++++++++++++++++++
 Log/LogBrowse.cs                 |  2 +-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/ExtLibs/Utilities/DFLogBuffer.cs b/ExtLibs/Utilities/DFLogBuffer.cs
index 425278fadf..472dbaf7bd 100644
--- a/ExtLibs/Utilities/DFLogBuffer.cs
+++ b/ExtLibs/Utilities/DFLogBuffer.cs
@@ -108,12 +108,27 @@ void setlinecount()
 
                     linestartoffset.Add((uint)(ans.Item2));
                     lineCount++;
+
+                    if (lineCount % 1000000 == 0)
+                        Console.WriteLine("reading lines " + lineCount + " " + ((basestream.Position / (double)length) * 100.0));
                 }
                 
                 _count = lineCount;
 
                 // build fmt line database to pre seed the FMT message
                 messageindexline[128].ForEach(a => dflog.FMTLine(this[(int) a]));
+
+                try
+                {
+                    foreach (var item in dflog.logformat)
+                    {
+                        var id = item.Value.Id;
+                        var type = item.Value.Name;
+                        if(messageindex[id].Count != 0)
+                            Console.WriteLine("Seen " + type + " count " + messageindex[id].Count);
+                    }
+                }
+                catch { }
             }
             else
             {
@@ -250,6 +265,7 @@ void setlinecount()
 
             BuildUnitMultiList();
 
+            int limitcount = 0;
             // used to set the firmware type
             foreach (var item in GetEnumeratorType(new[]
             {
@@ -259,6 +275,9 @@ void setlinecount()
                 // must be the string version to do the firmware type detection - binarylog
                 var line = this[(int) item.lineno];
                 //Console.WriteLine();
+                limitcount++;
+                if (limitcount > 100000)
+                    break;
             }
 
             // try get gps time - when a dfitem is created and no valid gpstime has been establish the messages are parsed to get a valid gpstime
diff --git a/Log/LogBrowse.cs b/Log/LogBrowse.cs
index e578387c20..830266f5a8 100644
--- a/Log/LogBrowse.cs
+++ b/Log/LogBrowse.cs
@@ -661,7 +661,7 @@ private void ResetTreeView(List<string> seenmessagetypes, string VehicleType)
             treeView1.ShowNodeToolTips = true;
             dataModifierHash = new Hashtable();
 
-            var parmdata = logdata.GetEnumeratorType("PARM").Select(a =>
+            var parmdata = logdata.GetEnumeratorType("PARM").Take(100000).Select(a =>
                 new MAVLink.MAVLinkParam(a["Name"], double.Parse(a["Value"], CultureInfo.InvariantCulture),
                     MAVLink.MAV_PARAM_TYPE.REAL32));
             MainV2.comPort.MAV.param.Clear();