From 4336ee86ee8b29ff24766d37a883a1e42201fdfc Mon Sep 17 00:00:00 2001
From: nik <Nikolay.Chashnikov@jetbrains.com>
Date: Mon, 6 Jun 2016 10:37:11 +0300
Subject: [PATCH] SSR: synchronization corrected

---
 .../intellij/structuralsearch/impl/matcher/MatcherImpl.java  | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/platform/structuralsearch/source/com/intellij/structuralsearch/impl/matcher/MatcherImpl.java b/platform/structuralsearch/source/com/intellij/structuralsearch/impl/matcher/MatcherImpl.java
index e68dce94b560..c8b30e128c57 100644
--- a/platform/structuralsearch/source/com/intellij/structuralsearch/impl/matcher/MatcherImpl.java
+++ b/platform/structuralsearch/source/com/intellij/structuralsearch/impl/matcher/MatcherImpl.java
@@ -80,13 +80,14 @@ public class MatcherImpl {
   }
 
   private static SoftReference<LastMatchData> lastMatchData;
+  private static final Object lastMatchDataLock = new Object();
 
   protected MatcherImpl(Project project) {
     this(project, null);
   }
 
   public static void validate(Project project, MatchOptions options) {
-    synchronized(MatcherImpl.class) {
+    synchronized (lastMatchDataLock) {
       final LastMatchData data = new LastMatchData();
       data.lastPattern =  PatternCompiler.compilePattern(project, options);
       data.lastOptions = options;
@@ -295,7 +296,7 @@ public class MatcherImpl {
 
     if (compiledPattern == null) {
 
-      synchronized(getClass()) {
+      synchronized (lastMatchDataLock) {
         final LastMatchData data = com.intellij.reference.SoftReference.dereference(lastMatchData);
         if (data != null && options == data.lastOptions) {
           compiledPattern = data.lastPattern;