rehash class hashcode

SilenceDut · Mar 26, 2019 · b623a10 · b623a10
1 parent 16791b5
commit b623a10
Showing 1 changed file with 12 additions and 1 deletion.
diff --git a/hub/src/main/java/com/silencedut/hub/navigation/impl/ImplHub.java b/hub/src/main/java/com/silencedut/hub/navigation/impl/ImplHub.java
@@ -38,14 +38,23 @@ private static void putImpl(Class api , IHub impl) {
 
     }
 
+    /**
+     * copy from HashMap jdk8
+     * @param key
+     * @return
+     */
+    private static int hash(Object key) {
+        int h;
+        return (key == null) ? 0 : (h = key.hashCode()) ^ (h >>> 16);
+    }
 
     public static <T extends IHub> T getImpl(Class<T> iHub) {
 
         if (!iHub.isInterface()) {
             Hub.sIHubLog.error(TAG, String.format("interfaceType must be a interface , %s is not a interface", iHub.getName()),new IllegalArgumentException("interfaceType must be a interface"));
         }
 
-        int monitorIndex = iHub.hashCode() & (HubMonitor.values().length -1);
+        int monitorIndex = hash(iHub.hashCode()) & (HubMonitor.values().length -1);
         IHub realImpl;
         long monitorStartTime = System.currentTimeMillis();
         Hub.sIHubLog.info(TAG, "getImpl before monitor"+iHub.getName()+" monitor"+monitorIndex +" currentThread :"+Thread.currentThread().getName());
@@ -74,6 +83,8 @@ public static <T extends IHub> T getImpl(Class<T> iHub) {
                     }
 
                     realImpl.onCreate();
+
+
                     Hub.sIHubLog.info(TAG, String.format("newImpl %s, cost time  %s ", iHub.getName(),System.currentTimeMillis() - startTime));
                 }
             } catch (Throwable throwable) {