private static (double elapsedMs, double allocatedMemory, double gcCollectionsCount) Test(
string[] codeToWrite,
ITextBuffer textBuffer,
TeXCommentTagger teXCommentTagger,
Stopwatch watch,
bool taggingEnabled)
{
textBuffer.Delete(new Span(0, textBuffer.CurrentSnapshot.Length));
var totalMemory = GC.GetTotalMemory(true);
var gcCount = GcCount();
watch.Restart();
for (int i = 0; i < codeToWrite.Length; i++)
{
textBuffer.Insert(textBuffer.CurrentSnapshot.Length, codeToWrite[i]);
var spans = new NormalizedSnapshotSpanCollection(textBuffer.CurrentSnapshot, new Span(0, textBuffer.CurrentSnapshot.Length));
if (taggingEnabled)
{
var tags = teXCommentTagger.GetTags(spans);
var count = 0;
foreach (var tag in tags)
{
++count;
}
}
}
return(watch.ElapsedMilliseconds, GC.GetTotalMemory(false) - totalMemory, GcCount() - gcCount);
}
static void Main()
{
var codeToWrite = RandomCodeGenerator.GenerateCode(segmentsCount: 150).Select(c => c.ToString()).ToArray(); //cca 2k lines
//Load referenced assembly
typeof(IContentType).ToString();
const string VsEditorAssemblyPath = @"C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\CommonExtensions\Microsoft\Editor";
var vsAssembliesPaths = new[]
{
VsEditorAssemblyPath,
@"C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\PrivateAssemblies"
//@"C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\CommonExtensions\Microsoft\Editor";
};
AppDomain.CurrentDomain.AssemblyResolve +=
(object sender, ResolveEventArgs args) =>
{
var shortName = GetShortName(args.Name);
//need to use assemblies referenced by this project and not by VS assemblies
var loadedAssemblies = AppDomain.CurrentDomain.GetAssemblies();
var loadedAssembly = loadedAssemblies.Where(a => GetShortName(a.FullName) == shortName).SingleOrDefault();
if (loadedAssembly != null)
{
return(loadedAssembly);
}
foreach (var vsAssembliesPath in vsAssembliesPaths)
{
var path = Path.Combine(vsAssembliesPath, shortName + ".dll");
if (File.Exists(path))
{
return(Assembly.LoadFile(path));
}
}
throw new InvalidOperationException($"Unable to find assembly '{args.Name}'.");
string GetShortName(string assemblyFullName) => assemblyFullName.Split(',')[0];
};
var vsEditorAssembly = Assembly.LoadFile(Path.Combine(VsEditorAssemblyPath, "Microsoft.VisualStudio.Platform.VSEditor.dll"));
var contentType = CreateContentType(vsEditorAssembly, "CSharp");
var stringRebuilder = CreateStringRebuilder(vsEditorAssembly, string.Empty);
var guardedOperations = CreateGuardedOperations(vsEditorAssembly);
var textBuffer = CreateTextBuffer(vsEditorAssembly, contentType, stringRebuilder, null, guardedOperations);
var teXCommentTagger = new TeXCommentTagger(textBuffer);
var watch = new Stopwatch();
Console.WriteLine($"{nameof(TeXCommentTagger)} performance:");
(double elapsedMs, double allocatedMemory, double gcCollectionsCount)baseLine = (0, 0, 0);
#if DEBUG
const int BaselineIterations = 1;
#else
const int BaselineIterations = 100;
#endif
for (int iteration = 0; iteration < BaselineIterations; iteration++)
{
var result = Test(codeToWrite, textBuffer, teXCommentTagger, watch, taggingEnabled: false);
baseLine.elapsedMs += result.elapsedMs;
baseLine.allocatedMemory += result.allocatedMemory;
baseLine.gcCollectionsCount += result.gcCollectionsCount;
}
baseLine.elapsedMs /= BaselineIterations;
baseLine.allocatedMemory /= BaselineIterations;
baseLine.gcCollectionsCount /= BaselineIterations;
Console.WriteLine($"Baseline (no tagging): { baseLine.elapsedMs}ms\tGC: { baseLine.gcCollectionsCount}\tTotalMemory:{ baseLine.allocatedMemory }");
for (int iteration = 0; iteration < 10; iteration++)
{
var(elapsedTime, allocatedMemory, gcCollectionsCount) = Test(codeToWrite, textBuffer, teXCommentTagger, watch, taggingEnabled: true);
Console.WriteLine($"{elapsedTime - baseLine.elapsedMs}ms\tGC: {gcCollectionsCount - baseLine.gcCollectionsCount}\tTotalMemory:{allocatedMemory - baseLine.allocatedMemory }");
}
}
