1 files changed, 155 insertions, 0 deletions
diff --git a/data/extensions/spyblock@gnu.org/lib/timeline.js b/data/extensions/spyblock@gnu.org/lib/timeline.js
new file mode 100644
index 0000000..18c10fb
--- /dev/null
+++ b/data/extensions/spyblock@gnu.org/lib/timeline.js
@@ -0,0 +1,155 @@
+/*
+ * This file is part of Adblock Plus <http://adblockplus.org/>,
+ * Copyright (C) 2006-2014 Eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @fileOverview Debugging module used for load time measurements.
+ */
+
+let nestingCounter = 0;
+let firstTimeStamp = null;
+let lastTimeStamp = null;
+
+let asyncActions = {__proto__: null};
+
+/**
+ * Time logging module, used to measure startup time of Adblock Plus (development builds only).
+ * @class
+ */
+let TimeLine = exports.TimeLine = {
+  /**
+   * Logs an event to console together with the time it took to get there.
+   */
+  log: function(/**String*/ message, /**Boolean*/ _forceDisplay)
+  {
+    if (!_forceDisplay && nestingCounter <= 0)
+      return;
+
+    let now = Date.now();
+    let diff = lastTimeStamp ? Math.round(now - lastTimeStamp) : "first event";
+    lastTimeStamp = now;
+
+    // Indent message depending on current nesting level
+    for (let i = 0; i < nestingCounter; i++)
+      message = "* " + message;
+
+    // Pad message with spaces
+    let padding = [];
+    for (let i = message.toString().length; i < 80; i++)
+      padding.push(" ");
+    dump("[" + now + "] ABP timeline: " + message + padding.join("") + "\t (" + diff + ")\n");
+  },
+
+  /**
+   * Called to indicate that application entered a block that needs to be timed.
+   */
+  enter: function(/**String*/ message)
+  {
+    if (nestingCounter <= 0)
+      firstTimeStamp = Date.now();
+
+    this.log(message, true);
+    nestingCounter = (nestingCounter <= 0 ? 1 : nestingCounter + 1);
+  },
+
+  /**
+   * Called when application exited a block that TimeLine.enter() was called for.
+   * @param {String} message  message to be logged
+   * @param {String} [asyncAction]  identifier of a pending async action
+   */
+  leave: function(message, asyncAction)
+  {
+    if (typeof asyncAction != "undefined")
+      message += " (async action pending)";
+
+    nestingCounter--;
+    this.log(message, true);
+
+    if (nestingCounter <= 0)
+    {
+      if (firstTimeStamp !== null)
+        dump("ABP timeline: Total time elapsed: " + Math.round(Date.now() - firstTimeStamp) + "\n");
+      firstTimeStamp = null;
+      lastTimeStamp = null;
+    }
+
+    if (typeof asyncAction != "undefined")
+    {
+      if (asyncAction in asyncActions)
+        dump("ABP timeline: Warning: Async action " + asyncAction + " already executing\n");
+      asyncActions[asyncAction] = {start: Date.now(), total: 0};
+    }
+  },
+
+  /**
+   * Called when the application starts processing of an async action.
+   */
+  asyncStart: function(/**String*/ asyncAction)
+  {
+    if (asyncAction in asyncActions)
+    {
+      let action = asyncActions[asyncAction];
+      if ("currentStart" in action)
+        dump("ABP timeline: Warning: Processing reentered for async action " + asyncAction + "\n");
+      action.currentStart = Date.now();
+    }
+    else
+      dump("ABP timeline: Warning: Async action " + asyncAction + " is unknown\n");
+  },
+
+  /**
+   * Called when the application finishes processing of an async action.
+   */
+  asyncEnd: function(/**String*/ asyncAction)
+  {
+    if (asyncAction in asyncActions)
+    {
+      let action = asyncActions[asyncAction];
+      if ("currentStart" in action)
+      {
+        action.total += Date.now() - action.currentStart;
+        delete action.currentStart;
+      }
+      else
+        dump("ABP timeline: Warning: Processing not entered for async action " + asyncAction + "\n");
+    }
+    else
+      dump("ABP timeline: Warning: Async action " + asyncAction + " is unknown\n");
+  },
+
+  /**
+   * Called when an async action is done and its time can be logged.
+   */
+  asyncDone: function(/**String*/ asyncAction)
+  {
+    if (asyncAction in asyncActions)
+    {
+      let action = asyncActions[asyncAction];
+      let now = Date.now();
+      let diff = now - action.start;
+      if ("currentStart" in action)
+        dump("ABP timeline: Warning: Still processing for async action " + asyncAction + "\n");
+
+      let message = "Async action " + asyncAction + " done";
+      let padding = [];
+      for (let i = message.toString().length; i < 80; i++)
+        padding.push(" ");
+      dump("[" + now + "] ABP timeline: " + message + padding.join("") + "\t (" + action.total + "/" + diff + ")\n");
+    }
+    else
+      dump("ABP timeline: Warning: Async action " + asyncAction + " is unknown\n");
+  }
+};