From 98965d674ba60cb3bfcc897af98510d6b42cefbb Mon Sep 17 00:00:00 2001
From: "Maxim.Mossienko" <Maxim.Mossienko@jetbrains.com>
Date: Tue, 19 May 2015 15:02:31 +0200
Subject: [PATCH] during forceUpdate contribute to other indexed projects only
 from time to time (IDEA-139951)

---
 .../src/com/intellij/util/indexing/FileBasedIndexImpl.java | 5 ++++-
 .../com/intellij/util/indexing/ProjectFilesCondition.java  | 7 ++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
index 985df34bb113..a68926b084fc 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
+++ b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
@@ -2206,6 +2206,7 @@ public class FileBasedIndexImpl extends FileBasedIndex {
     }
 
     private final VirtualFileUpdateTask myForceUpdateTask = new VirtualFileUpdateTask();
+    private final AtomicInteger myForceUpdateRequests = new AtomicInteger();
 
     private void forceUpdate(@Nullable Project project, @Nullable final GlobalSearchScope filter, @Nullable final VirtualFile restrictedTo) {
       myChangedFilesCollector.tryToEnsureAllInvalidateTasksCompleted();
@@ -2213,9 +2214,11 @@ public class FileBasedIndexImpl extends FileBasedIndex {
       Collection<VirtualFile> allFilesToUpdate = getAllFilesToUpdate();
 
       if (!allFilesToUpdate.isEmpty()) {
+        boolean includeFilesFromOtherProjects = (myForceUpdateRequests.incrementAndGet() & 0x3F) == 0;
         List<VirtualFile> virtualFilesToBeUpdatedForProject = ContainerUtil.filter(
           allFilesToUpdate,
-          new ProjectFilesCondition(projectIndexableFiles(project), filter, restrictedTo)
+          new ProjectFilesCondition(projectIndexableFiles(project), filter, restrictedTo,
+                                    includeFilesFromOtherProjects)
         );
 
         if (!virtualFilesToBeUpdatedForProject.isEmpty()) {
diff --git a/platform/lang-impl/src/com/intellij/util/indexing/ProjectFilesCondition.java b/platform/lang-impl/src/com/intellij/util/indexing/ProjectFilesCondition.java
index a98111f1b0f3..92b3c219e953 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/ProjectFilesCondition.java
+++ b/platform/lang-impl/src/com/intellij/util/indexing/ProjectFilesCondition.java
@@ -29,10 +29,15 @@ class ProjectFilesCondition implements Condition<VirtualFile> {
 
   public ProjectFilesCondition(FileBasedIndexImpl.ProjectIndexableFilesFilter indexableFilesFilter,
                                GlobalSearchScope filter,
-                               VirtualFile restrictedTo) {
+                               VirtualFile restrictedTo,
+                               boolean includeFilesFromOtherProjects
+                               ) {
     myRestrictedTo = restrictedTo;
     myFilter = filter;
     myIndexableFilesFilter = indexableFilesFilter;
+    if (!includeFilesFromOtherProjects) {
+      myFilesFromOtherProjects = MAX_FILES_TO_UPDATE_FROM_OTHER_PROJECT;
+    }
   }
 
   @Override