vendor: import KillerPDF 1.7.5 source (GPL-3.0) as the base for MMD PDF

2026-08-27 06:58:22 +02:00
commit 532485a830
577 changed files with 149058 additions and 0 deletions
@@ -0,0 +1,60 @@
+using System;
+using System.Diagnostics;
+using System.Globalization;
+using System.IO;
+using System.Text;
+
+namespace KillerPDF.Services
+{
+    /// <summary>
+    /// Opt-in startup timing used by the release benchmark. Normal launches do no file I/O.
+    /// Set KILLERPDF_STARTUP_TRACE to an output path before starting the process.
+    /// </summary>
+    internal static class StartupTrace
+    {
+        private const string TraceEnvironmentVariable = "KILLERPDF_STARTUP_TRACE";
+        private static readonly object Gate = new object();
+        private static readonly Stopwatch Clock = Stopwatch.StartNew();
+        private static readonly string? OutputPath = Environment.GetEnvironmentVariable(TraceEnvironmentVariable);
+        private static bool _headerWritten;
+
+        internal static bool Enabled => !string.IsNullOrWhiteSpace(OutputPath);
+
+        internal static void Mark(string stage)
+        {
+            if (!Enabled) return;
+
+            try
+            {
+                lock (Gate)
+                {
+                    var directory = Path.GetDirectoryName(OutputPath!);
+                    if (!string.IsNullOrEmpty(directory)) Directory.CreateDirectory(directory);
+
+                    var sb = new StringBuilder();
+                    if (!_headerWritten)
+                    {
+                        _headerWritten = true;
+                        var process = Process.GetCurrentProcess();
+                        sb.Append("# KillerPDF startup trace | pid=")
+                          .Append(process.Id)
+                          .Append(" | processStartUtc=")
+                          .Append(process.StartTime.ToUniversalTime().ToString("O", CultureInfo.InvariantCulture))
+                          .Append(" | traceStartUtc=")
+                          .Append(DateTime.UtcNow.ToString("O", CultureInfo.InvariantCulture))
+                          .AppendLine();
+                    }
+
+                    sb.Append(Clock.Elapsed.TotalMilliseconds.ToString("F3", CultureInfo.InvariantCulture))
+                      .Append('\t')
+                      .AppendLine(stage);
+                    File.AppendAllText(OutputPath!, sb.ToString(), new UTF8Encoding(false));
+                }
+            }
+            catch
+            {
+                // Diagnostics must never make startup fail.
+            }
+        }
+    }
+}