# HG changeset patch
# User Stefan Anzinger <stefan.a.anzinger@oracle.com>
# Date 1417732404 -3600
# Node ID 12bad81babffa6f9418cc0b98898e6adf01dd477
# Parent  7cd79d18f71a7793b5c0a65d90d4e9858ef2ebba
[AMD64] fix concurrency issues in register configuration caching (Use concurrenthashmap)

diff -r 7cd79d18f71a -r 12bad81babff graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotRegisterConfig.java
--- a/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotRegisterConfig.java	Thu Dec 04 23:30:52 2014 +0100
+++ b/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotRegisterConfig.java	Thu Dec 04 23:33:24 2014 +0100
@@ -26,6 +26,7 @@
 import static com.oracle.graal.compiler.common.GraalOptions.*;
 
 import java.util.*;
+import java.util.concurrent.*;
 
 import com.oracle.graal.amd64.*;
 import com.oracle.graal.api.code.*;
@@ -51,7 +52,7 @@
 
     private final boolean allAllocatableAreCallerSaved;
 
-    private final HashMap<PlatformKind, Register[]> categorized = new HashMap<>();
+    private final Map<PlatformKind, Register[]> categorized = new ConcurrentHashMap<>();
 
     private final RegisterAttributes[] attributesMap;