From 6ec33c4986d480e80c53c14ae63d1a09701bc1a9 Mon Sep 17 00:00:00 2001
From: Konstantin Kolosovsky <konstantin.kolosovsky@jetbrains.com>
Date: Mon, 21 May 2018 21:50:19 +0300
Subject: [PATCH] vcs: More diagnostics for repository tab performance
 (IDEA-119539)

---
 .../changes/committed/ChangesCacheFile.java   | 24 +++++++------------
 1 file changed, 8 insertions(+), 16 deletions(-)

diff --git a/platform/vcs-impl/src/com/intellij/openapi/vcs/changes/committed/ChangesCacheFile.java b/platform/vcs-impl/src/com/intellij/openapi/vcs/changes/committed/ChangesCacheFile.java
index 2cf5287e9ce8..9b660cc385c2 100644
--- a/platform/vcs-impl/src/com/intellij/openapi/vcs/changes/committed/ChangesCacheFile.java
+++ b/platform/vcs-impl/src/com/intellij/openapi/vcs/changes/committed/ChangesCacheFile.java
@@ -1,20 +1,7 @@
-/*
- * Copyright 2000-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.openapi.vcs.changes.committed;
 
+import com.google.common.base.Stopwatch;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.Pair;
@@ -45,7 +32,7 @@ import static com.intellij.openapi.vcs.changes.committed.IncomingChangeState.Sta
  * @author yole
  */
 public class ChangesCacheFile {
-  private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.vcs.changes.committed.ChangesCacheFile");
+  private static final Logger LOG = Logger.getInstance(ChangesCacheFile.class);
   private static final int VERSION = 7;
 
   private final File myPath;
@@ -818,7 +805,9 @@ public class ChangesCacheFile {
             myChangesCacheFile.saveIncoming(data, true);
           }
         } else {
+          Stopwatch stopWatch = Stopwatch.createStarted();
           shouldChangeHeader = refreshIncomingInFile(incomingFiles, list);
+          debug("Finished incoming refresh for " + myChangesCacheFile.myLocation.toPresentableString() + " in " + stopWatch.stop());
         }
 
         IncomingChangeState.footer();
@@ -842,7 +831,9 @@ public class ChangesCacheFile {
 
       myIndexStreamCachedLength = myChangesCacheFile.myIndexStream.length();
       // try to process changelists in a light way, remember which files need revisions
+      Stopwatch stopWatch = Stopwatch.createUnstarted();
       for(IncomingChangeListData data: list) {
+        stopWatch.reset().start();
         debug("Checking incoming changelist " + data.changeList.getNumber());
 
         for(Change change: data.getChangesToProcess()) {
@@ -854,6 +845,7 @@ public class ChangesCacheFile {
             revisionDependentFiles.put(key, result.file);
           }
         }
+        debug("Finished checking incoming changelist " + data.changeList.getNumber() + " in " + stopWatch.stop());
       }
 
       if (!revisionDependentFiles.isEmpty()) {