/*

 * Copyright 1997-2007 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.

 *

 */

// Implementation of all inlined member functions defined in oop.hpp

// We need a separate file to avoid circular references

inline void oopDesc::release_set_mark(markOop m) {

  OrderAccess::release_store_ptr(&_mark, m);

}

inline markOop oopDesc::cas_set_mark(markOop new_mark, markOop old_mark) {

  return (markOop) Atomic::cmpxchg_ptr(new_mark, &_mark, old_mark);

}

inline void oopDesc::set_klass(klassOop k) {

  // since klasses are promoted no store check is needed

  assert(Universe::is_bootstrapping() || k != NULL, "must be a real klassOop");

  assert(Universe::is_bootstrapping() || k->is_klass(), "not a klassOop");

}

inline void oopDesc::set_klass_to_list_ptr(oop k) {

  // This is only to be used during GC, for from-space objects, so no

  // barrier is needed.

}

inline void   oopDesc::init_mark()                 { set_mark(markOopDesc::prototype_for_object(this)); }

inline Klass* oopDesc::blueprint()           const { return klass()->klass_part(); }

inline bool oopDesc::is_a(klassOop k)        const { return blueprint()->is_subtype_of(k); }

inline bool oopDesc::is_instance()           const { return blueprint()->oop_is_instance(); }

inline bool oopDesc::is_instanceRef()        const { return blueprint()->oop_is_instanceRef(); }

inline bool oopDesc::is_array()              const { return blueprint()->oop_is_array(); }

inline bool oopDesc::is_objArray()           const { return blueprint()->oop_is_objArray(); }

inline bool oopDesc::is_typeArray()          const { return blueprint()->oop_is_typeArray(); }

inline bool oopDesc::is_javaArray()          const { return blueprint()->oop_is_javaArray(); }

inline bool oopDesc::is_symbol()             const { return blueprint()->oop_is_symbol(); }

inline bool oopDesc::is_klass()              const { return blueprint()->oop_is_klass(); }

inline bool oopDesc::is_thread()             const { return blueprint()->oop_is_thread(); }

inline bool oopDesc::is_method()             const { return blueprint()->oop_is_method(); }

inline bool oopDesc::is_constMethod()        const { return blueprint()->oop_is_constMethod(); }

inline bool oopDesc::is_methodData()         const { return blueprint()->oop_is_methodData(); }

inline bool oopDesc::is_constantPool()       const { return blueprint()->oop_is_constantPool(); }

inline bool oopDesc::is_constantPoolCache()  const { return blueprint()->oop_is_constantPoolCache(); }

inline bool oopDesc::is_compiledICHolder()   const { return blueprint()->oop_is_compiledICHolder(); }

inline void*     oopDesc::field_base(int offset)        const { return (void*)&((char*)this)[offset]; }

inline jbyte*    oopDesc::byte_field_addr(int offset)   const { return (jbyte*)   field_base(offset); }

inline jchar*    oopDesc::char_field_addr(int offset)   const { return (jchar*)   field_base(offset); }

inline jboolean* oopDesc::bool_field_addr(int offset)   const { return (jboolean*)field_base(offset); }

inline jint*     oopDesc::int_field_addr(int offset)    const { return (jint*)    field_base(offset); }

inline jshort*   oopDesc::short_field_addr(int offset)  const { return (jshort*)  field_base(offset); }

inline jlong*    oopDesc::long_field_addr(int offset)   const { return (jlong*)   field_base(offset); }

inline jfloat*   oopDesc::float_field_addr(int offset)  const { return (jfloat*)  field_base(offset); }

inline jdouble*  oopDesc::double_field_addr(int offset) const { return (jdouble*) field_base(offset); }

inline jbyte oopDesc::byte_field(int offset) const                  { return (jbyte) *byte_field_addr(offset);    }

inline void oopDesc::byte_field_put(int offset, jbyte contents)     { *byte_field_addr(offset) = (jint) contents; }

inline jboolean oopDesc::bool_field(int offset) const               { return (jboolean) *bool_field_addr(offset); }

inline void oopDesc::bool_field_put(int offset, jboolean contents)  { *bool_field_addr(offset) = (jint) contents; }

inline jchar oopDesc::char_field(int offset) const                  { return (jchar) *char_field_addr(offset);    }

inline void oopDesc::char_field_put(int offset, jchar contents)     { *char_field_addr(offset) = (jint) contents; }

inline jint oopDesc::int_field(int offset) const                    { return *int_field_addr(offset);        }

inline void oopDesc::int_field_put(int offset, jint contents)       { *int_field_addr(offset) = contents;    }

inline jshort oopDesc::short_field(int offset) const                { return (jshort) *short_field_addr(offset);  }

inline void oopDesc::short_field_put(int offset, jshort contents)   { *short_field_addr(offset) = (jint) contents;}

inline jlong oopDesc::long_field(int offset) const                  { return *long_field_addr(offset);       }

inline void oopDesc::long_field_put(int offset, jlong contents)     { *long_field_addr(offset) = contents;   }

inline jfloat oopDesc::float_field(int offset) const                { return *float_field_addr(offset);      }

inline void oopDesc::float_field_put(int offset, jfloat contents)   { *float_field_addr(offset) = contents;  }

inline jdouble oopDesc::double_field(int offset) const              { return *double_field_addr(offset);     }

inline void oopDesc::double_field_put(int offset, jdouble contents) { *double_field_addr(offset) = contents; }

inline jbyte oopDesc::byte_field_acquire(int offset) const                  { return OrderAccess::load_acquire(byte_field_addr(offset));     }

inline void oopDesc::release_byte_field_put(int offset, jbyte contents)     { OrderAccess::release_store(byte_field_addr(offset), contents); }

inline jboolean oopDesc::bool_field_acquire(int offset) const               { return OrderAccess::load_acquire(bool_field_addr(offset));     }

inline void oopDesc::release_bool_field_put(int offset, jboolean contents)  { OrderAccess::release_store(bool_field_addr(offset), contents); }

inline jchar oopDesc::char_field_acquire(int offset) const                  { return OrderAccess::load_acquire(char_field_addr(offset));     }

inline void oopDesc::release_char_field_put(int offset, jchar contents)     { OrderAccess::release_store(char_field_addr(offset), contents); }

inline jint oopDesc::int_field_acquire(int offset) const                    { return OrderAccess::load_acquire(int_field_addr(offset));      }

inline void oopDesc::release_int_field_put(int offset, jint contents)       { OrderAccess::release_store(int_field_addr(offset), contents);  }

inline jshort oopDesc::short_field_acquire(int offset) const                { return (jshort)OrderAccess::load_acquire(short_field_addr(offset)); }

inline void oopDesc::release_short_field_put(int offset, jshort contents)   { OrderAccess::release_store(short_field_addr(offset), contents);     }

inline jlong oopDesc::long_field_acquire(int offset) const                  { return OrderAccess::load_acquire(long_field_addr(offset));       }

inline void oopDesc::release_long_field_put(int offset, jlong contents)     { OrderAccess::release_store(long_field_addr(offset), contents);   }

inline jfloat oopDesc::float_field_acquire(int offset) const                { return OrderAccess::load_acquire(float_field_addr(offset));      }

inline void oopDesc::release_float_field_put(int offset, jfloat contents)   { OrderAccess::release_store(float_field_addr(offset), contents);  }

inline jdouble oopDesc::double_field_acquire(int offset) const              { return OrderAccess::load_acquire(double_field_addr(offset));     }

inline void oopDesc::release_double_field_put(int offset, jdouble contents) { OrderAccess::release_store(double_field_addr(offset), contents); }

inline int oopDesc::size_given_klass(Klass* klass)  {

  int lh = klass->layout_helper();

  int s  = lh >> LogHeapWordSize;  // deliver size scaled by wordSize

  // lh is now a value computed at class initialization that may hint

  // at the size.  For instances, this is positive and equal to the

  // size.  For arrays, this is negative and provides log2 of the

  // array element size.  For other oops, it is zero and thus requires

  // a virtual call.

  //

  // We go to all this trouble because the size computation is at the

  // heart of phase 2 of mark-compaction, and called for every object,

  // alive or dead.  So the speed here is equal in importance to the

  // speed of allocation.

  if (lh <= Klass::_lh_neutral_value) {

    // The most common case is instances; fall through if so.

    if (lh < Klass::_lh_neutral_value) {

      // Second most common case is arrays.  We have to fetch the

      // length of the array, shift (multiply) it appropriately,

      // up to wordSize, add the header, and align to object size.

      size_t size_in_bytes;

#ifdef _M_IA64

      // The Windows Itanium Aug 2002 SDK hoists this load above

      // the check for s < 0.  An oop at the end of the heap will

      // cause an access violation if this load is performed on a non

      // array oop.  Making the reference volatile prohibits this.

      // (%%% please explain by what magic the length is actually fetched!)

      volatile int *array_length;

      array_length = (volatile int *)( (intptr_t)this +

                          arrayOopDesc::length_offset_in_bytes() );

      assert(array_length > 0, "Integer arithmetic problem somewhere");

      // Put into size_t to avoid overflow.

      size_in_bytes = (size_t) array_length;

      size_in_bytes = size_in_bytes << Klass::layout_helper_log2_element_size(lh);

#else

      size_t array_length = (size_t) ((arrayOop)this)->length();

      size_in_bytes = array_length << Klass::layout_helper_log2_element_size(lh);

#endif

      size_in_bytes += Klass::layout_helper_header_size(lh);

      // This code could be simplified, but by keeping array_header_in_bytes

      // in units of bytes and doing it this way we can round up just once,

      // skipping the intermediate round to HeapWordSize.  Cast the result

      // of round_to to size_t to guarantee unsigned division == right shift.

      s = (int)((size_t)round_to(size_in_bytes, MinObjAlignmentInBytes) /

        HeapWordSize);

      // UseParNewGC can change the length field of an "old copy" of an object

      // array in the young gen so it indicates the stealable portion of

      // an already copied array. This will cause the first disjunct below

      // to fail if the sizes are computed across such a concurrent change.

      // UseParNewGC also runs with promotion labs (which look like int

      // filler arrays) which are subject to changing their declared size

      // when finally retiring a PLAB; this also can cause the first disjunct

      // to fail for another worker thread that is concurrently walking the block

      // offset table. Both these invariant failures are benign for their

      // current uses; we relax the assertion checking to cover these two cases below:

      //     is_objArray() && is_forwarded()   // covers first scenario above

      //  || is_typeArray()                    // covers second scenario above

      // If and when UseParallelGC uses the same obj array oop stealing/chunking

      // technique, or when G1 is integrated (and currently uses this array chunking

      // technique) we will need to suitably modify the assertion.

      assert((s == klass->oop_size(this)) ||

             (((UseParNewGC || UseParallelGC) &&

              (is_typeArray() ||

               (is_objArray() && is_forwarded()))),

             "wrong array object size");

    } else {

      // Must be zero, so bite the bullet and take the virtual call.

      s = klass->oop_size(this);

    }

  }

  assert(s % MinObjAlignment == 0, "alignment check");

  assert(s > 0, "Bad size calculated");

  return s;

}

inline int oopDesc::size()  {

  return size_given_klass(blueprint());

}

inline bool oopDesc::is_parsable() {

  return blueprint()->oop_is_parsable(this);

}

  assert(oopDesc::bs() != NULL, "Uninitialized bs in oop!");

  oopDesc::bs()->write_ref_field(p, v);

}

  if (always_do_update_barrier) {

  } else {

    update_barrier_set(p, v);

  }

}

  // Used by release_obj_field_put, so use release_store_ptr.

}

  // XXX YSR FIX ME!!!

  if (always_do_update_barrier) {

  } else {

    assert(!Universe::heap()->barrier_set()->write_ref_needs_barrier(p, v),

           "oop store without store check failed");

  }

}

// When it absolutely has to get there.

  // XXX YSR FIX ME!!!

  if (always_do_update_barrier) {

    oop_store(p, v);

  } else {

           "oop store without store check failed");

  }

}

// Used only for markSweep, scavenging

inline bool oopDesc::is_gc_marked() const {

  return mark()->is_marked();

}

inline bool oopDesc::is_locked() const {

  return mark()->is_locked();

}

inline bool oopDesc::is_unlocked() const {

  return mark()->is_unlocked();

}

inline bool oopDesc::has_bias_pattern() const {

  return mark()->has_bias_pattern();

}

inline bool check_obj_alignment(oop obj) {

  return (intptr_t)obj % MinObjAlignmentInBytes == 0;

}

// used only for asserts

inline bool oopDesc::is_oop(bool ignore_mark_word) const {

  oop obj = (oop) this;

  if (!check_obj_alignment(obj)) return false;

  if (!Universe::heap()->is_in_reserved(obj)) return false;

  // obj is aligned and accessible in heap

  // try to find metaclass cycle safely without seg faulting on bad input

  // we should reach klassKlassObj by following klass link at most 3 times

  for (int i = 0; i < 3; i++) {

    obj = obj->klass();

    // klass should be aligned and in permspace

    if (!check_obj_alignment(obj)) return false;

    if (!Universe::heap()->is_in_permanent(obj)) return false;

  }

  if (obj != Universe::klassKlassObj()) {