Adding JMCR-Stable version

[Benchmarks_CSolver.git] / JMCR-Stable / real-world application / MyDerby-10.3 / java / engine / org / apache / derby / iapi / services / locks / ShExLockable.java

diff --git a/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/iapi/services/locks/ShExLockable.java b/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/iapi/services/locks/ShExLockable.java
new file mode 100644 (file)
index 0000000..153626b
--- /dev/null
+++ b/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/iapi/services/locks/ShExLockable.java
@@ -0,0 +1,113 @@
+/*\r
+\r
+   Derby - Class org.apache.derby.iapi.services.locks.ShExLockable\r
+\r
+   Licensed to the Apache Software Foundation (ASF) under one or more\r
+   contributor license agreements.  See the NOTICE file distributed with\r
+   this work for additional information regarding copyright ownership.\r
+   The ASF licenses this file to you under the Apache License, Version 2.0\r
+   (the "License"); you may not use this file except in compliance with\r
+   the License.  You may obtain a copy of the License at\r
+\r
+      http://www.apache.org/licenses/LICENSE-2.0\r
+\r
+   Unless required by applicable law or agreed to in writing, software\r
+   distributed under the License is distributed on an "AS IS" BASIS,\r
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+   See the License for the specific language governing permissions and\r
+   limitations under the License.\r
+\r
+ */\r
+\r
+package org.apache.derby.iapi.services.locks;\r
+\r
+import org.apache.derby.iapi.services.locks.Lockable;\r
+import org.apache.derby.iapi.services.locks.Latch;\r
+import org.apache.derby.iapi.services.locks.VirtualLockTable;\r
+\r
+import org.apache.derby.iapi.services.sanity.SanityManager;\r
+\r
+import java.util.Hashtable;\r
+\r
+public class ShExLockable implements Lockable\r
+{\r
+\r
+       public ShExLockable()\r
+       {               \r
+       }\r
+\r
+       /** @see Lockable#lockerAlwaysCompatible */\r
+       public boolean lockerAlwaysCompatible()\r
+       {\r
+               return true;\r
+       }\r
+\r
+       /** @see Lockable#requestCompatible */\r
+       public boolean requestCompatible(Object requestedQualifier,\r
+                                                                                       Object grantedQualifier)\r
+       {\r
+               if (SanityManager.DEBUG)\r
+               {\r
+                       if (!(requestedQualifier instanceof ShExQual))\r
+                               SanityManager.THROWASSERT(\r
+                               "requestedQualifier is a " +\r
+                               requestedQualifier.getClass().getName() +\r
+                               "instead of a ShExQual.");\r
+\r
+                       if (!(grantedQualifier instanceof ShExQual))\r
+                               SanityManager.THROWASSERT(\r
+                               "grantedQualifier is a " +\r
+                               grantedQualifier.getClass().getName() +\r
+                               "instead of a ShExQual.");\r
+               }\r
+\r
+               ShExQual requested = (ShExQual) requestedQualifier;\r
+               ShExQual granted = (ShExQual) grantedQualifier;\r
+\r
+               return (requested.getLockState() == ShExQual.SHARED) &&\r
+                               (granted.getLockState() == ShExQual.SHARED);\r
+       }\r
+\r
+       /** @see Lockable#lockEvent */\r
+       public void lockEvent(Latch lockInfo)\r
+       {\r
+               if (SanityManager.DEBUG)\r
+               {\r
+                       if (!(lockInfo.getQualifier() instanceof ShExQual))\r
+                               SanityManager.THROWASSERT("qualifier is a " + lockInfo.getQualifier().getClass().getName() +\r
+                               "instead of a ShExQual.");\r
+               }\r
+       }\r
+\r
+       /** @see Lockable#unlockEvent */\r
+       public void unlockEvent(Latch lockInfo)\r
+       {\r
+               if (SanityManager.DEBUG)\r
+               {\r
+                       if (!(lockInfo.getQualifier() instanceof ShExQual))\r
+                               SanityManager.THROWASSERT("qualifier is a " + lockInfo.getQualifier().getClass().getName() +\r
+                               "instead of a ShExQual.");\r
+               }\r
+       }\r
+\r
+    /**\r
+     * This lockable want to participate in the Virtual LockTable\r
+     * when we want to print LATCH information.\r
+     * Any lockable object which DOES NOT want to participate should\r
+     * override this function.\r
+     */\r
+       public boolean lockAttributes(int flag, Hashtable attributes)\r
+       {\r
+        if((flag & VirtualLockTable.SHEXLOCK) == 0)\r
+            return false;\r
+        // No containerId, but need something in there so it can print\r
+               attributes.put(VirtualLockTable.CONTAINERID, new Long(-1) ); \r
+\r
+               attributes.put(VirtualLockTable.LOCKNAME, this.toString() );\r
+\r
+               attributes.put(VirtualLockTable.LOCKTYPE, "ShExLockable");\r
+\r
+               return true;\r
+       }\r
+\r
+}\r