# HG changeset patch
# User Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
# Date 1424210929 -3600
# Node ID f13ce59e415053a1f9440790b531c85066afec8d
# Parent  5b582897cc4b0c6144709c2873f3fb6dfd116f40
Use atomic integer for iterable IDs to prevent races.

diff -r 5b582897cc4b -r f13ce59e4150 graal/com.oracle.graal.graph/src/com/oracle/graal/graph/NodeClass.java
--- a/graal/com.oracle.graal.graph/src/com/oracle/graal/graph/NodeClass.java	Tue Feb 17 20:38:13 2015 +0100
+++ b/graal/com.oracle.graal.graph/src/com/oracle/graal/graph/NodeClass.java	Tue Feb 17 23:08:49 2015 +0100
@@ -30,6 +30,7 @@
 import java.lang.annotation.*;
 import java.lang.reflect.*;
 import java.util.*;
+import java.util.concurrent.atomic.*;
 
 import com.oracle.graal.compiler.common.*;
 import com.oracle.graal.debug.*;
@@ -96,7 +97,7 @@
     private static final Class<?> INPUT_LIST_CLASS = NodeInputList.class;
     private static final Class<?> SUCCESSOR_LIST_CLASS = NodeSuccessorList.class;
 
-    private static int nextIterableId = 0;
+    private static AtomicInteger nextIterableId = new AtomicInteger();
 
     private final InputEdges inputs;
     private final SuccessorEdges successors;
@@ -172,7 +173,7 @@
         } else if (IterableNodeType.class.isAssignableFrom(clazz)) {
             ITERABLE_NODE_TYPES.increment();
             try (TimerCloseable t1 = Init_IterableIds.start()) {
-                this.iterableId = nextIterableId++;
+                this.iterableId = nextIterableId.getAndIncrement();
 
                 NodeClass<?> snc = superNodeClass;
                 while (snc != null && IterableNodeType.class.isAssignableFrom(snc.getClazz())) {
@@ -245,7 +246,7 @@
     }
 
     static int allocatedNodeIterabledIds() {
-        return nextIterableId;
+        return nextIterableId.get();
     }
 
     public EnumSet<InputType> getAllowedUsageTypes() {