1 /*
   2  * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 # include "incls/_precompiled.incl"
  26 # include "incls/_oopMapCache.cpp.incl"






  27 
  28 class OopMapCacheEntry: private InterpreterOopMap {
  29   friend class InterpreterOopMap;
  30   friend class OopMapForCacheEntry;
  31   friend class OopMapCache;
  32   friend class VerifyClosure;
  33 
  34  protected:
  35   // Initialization
  36   void fill(methodHandle method, int bci);
  37   // fills the bit mask for native calls
  38   void fill_for_native(methodHandle method);
  39   void set_mask(CellTypeState* vars, CellTypeState* stack, int stack_top);
  40 
  41   // Deallocate bit masks and initialize fields
  42   void flush();
  43 
  44  private:
  45   void allocate_bit_mask();   // allocates the bit mask on C heap f necessary
  46   void deallocate_bit_mask(); // allocates the bit mask on C heap f necessary

   1 /*
   2  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "interpreter/oopMapCache.hpp"
  27 #include "memory/allocation.inline.hpp"
  28 #include "memory/resourceArea.hpp"
  29 #include "oops/oop.inline.hpp"
  30 #include "prims/jvmtiRedefineClassesTrace.hpp"
  31 #include "runtime/handles.inline.hpp"
  32 #include "runtime/signature.hpp"
  33 
  34 class OopMapCacheEntry: private InterpreterOopMap {
  35   friend class InterpreterOopMap;
  36   friend class OopMapForCacheEntry;
  37   friend class OopMapCache;
  38   friend class VerifyClosure;
  39 
  40  protected:
  41   // Initialization
  42   void fill(methodHandle method, int bci);
  43   // fills the bit mask for native calls
  44   void fill_for_native(methodHandle method);
  45   void set_mask(CellTypeState* vars, CellTypeState* stack, int stack_top);
  46 
  47   // Deallocate bit masks and initialize fields
  48   void flush();
  49 
  50  private:
  51   void allocate_bit_mask();   // allocates the bit mask on C heap f necessary
  52   void deallocate_bit_mask(); // allocates the bit mask on C heap f necessary