--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/interpreter/OopMapForCacheEntry.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2001 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.interpreter;
+
+import java.util.*;
+import sun.jvm.hotspot.oops.*;
+import sun.jvm.hotspot.utilities.*;
+
+class OopMapForCacheEntry extends GenerateOopMap {
+  private OopMapCacheEntry entry;
+  private int              bci;
+  private int              stackTop;
+
+  OopMapForCacheEntry(Method method, int bci, OopMapCacheEntry entry) {
+    super(method);
+    this.entry = entry;
+    this.bci = bci;
+    this.stackTop = -1;
+  }
+
+  public boolean reportResults() { return false; }
+
+  public boolean possibleGCPoint(BytecodeStream bcs) {
+    return false; // We are not reporting any result. We call resultForBasicblock directly
+  }
+
+  public void fillStackmapProlog(int nof_gc_points) {
+    // Do nothing
+  }
+
+  public void fillStackmapEpilog() {
+    // Do nothing
+  }
+
+  public void fillStackmapForOpcodes(BytecodeStream bcs,
+                                     CellTypeStateList vars,
+                                     CellTypeStateList stack,
+                                     int stackTop) {
+    // Only interested in one specific bci
+    if (bcs.bci() == bci) {
+      entry.setMask(vars, stack, stackTop);
+      this.stackTop = stackTop;
+    }
+  }
+
+  public void fillInitVars(List/*<Integer>*/ initVars) {
+    // Do nothing
+  }
+
+  public void computeMap() {
+    if (Assert.ASSERTS_ENABLED) {
+      Assert.that(!method().isNative(), "cannot compute oop map for native methods");
+    }
+    // First check if it is a method where the stackmap is always empty
+    if (method().getCodeSize() == 0 || method().getMaxLocals() + method().getMaxStack() == 0) {
+      entry.setEmptyMask();
+    } else {
+      super.computeMap();
+      resultForBasicblock(bci);
+    }
+  }
+
+  public int size() {
+    if (Assert.ASSERTS_ENABLED) {
+      Assert.that(stackTop != -1, "computeMap must be called first");
+    }
+    return (int) ((method().isStatic() ? 0 : 1) + method().getMaxLocals() + stackTop);
+  }
+}