1 /*
   2  * Copyright (c) 2017, 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 #ifndef SHARE_VM_OOPS_VALUEKLASS_INLINE_HPP
  25 #define SHARE_VM_OOPS_VALUEKLASS_INLINE_HPP
  26 
  27 #include "memory/iterator.hpp"
  28 #include "oops/klass.hpp"
  29 #include "oops/valueArrayKlass.hpp"
  30 #include "oops/oop.inline.hpp"
  31 #include "oops/valueKlass.hpp"
  32 #include "utilities/macros.hpp"
  33 
  34 inline ValueKlass* ValueKlass::cast(Klass* k) {
  35   assert(k->is_value(), "cast to ValueKlass");
  36   return (ValueKlass*) k;
  37 }
  38 
  39 inline address ValueKlass::data_for_oop(oop o) const {
  40   return ((address) (void*) o) + first_field_offset();
  41 }
  42 
  43 inline oop ValueKlass::oop_for_data(address data) const {
  44   oop o = (oop) (data - first_field_offset());
  45   assert(oopDesc::is_oop(o, false), "Not an oop");
  46   return o;
  47 }
  48 
  49 inline void ValueKlass::value_copy_payload_to_new_oop(void* src, oop dst) {
  50   HeapAccess<IS_DEST_UNINITIALIZED>::value_copy(src, data_for_oop(dst), this);
  51 }
  52 
  53 inline void ValueKlass::value_copy_oop_to_new_oop(oop src, oop dst) {
  54   HeapAccess<IS_DEST_UNINITIALIZED>::value_copy(data_for_oop(src), data_for_oop(dst), this);
  55 }
  56 
  57 inline void ValueKlass::value_copy_oop_to_new_payload(oop src, void* dst) {
  58   HeapAccess<IS_DEST_UNINITIALIZED>::value_copy(data_for_oop(src), dst, this);
  59 }
  60 
  61 inline void ValueKlass::value_copy_oop_to_payload(oop src, void* dst) {
  62   HeapAccess<>::value_copy(data_for_oop(src), dst, this);
  63 }
  64 
  65 
  66 template <typename T, class OopClosureType>
  67 void ValueKlass::oop_iterate_specialized(const address oop_addr, OopClosureType* closure) {
  68   OopMapBlock* map = start_of_nonstatic_oop_maps();
  69   OopMapBlock* const end_map = map + nonstatic_oop_map_count();
  70 
  71   for (; map < end_map; map++) {
  72     T* p = (T*) (oop_addr + map->offset());
  73     T* const end = p + map->count();
  74     for (; p < end; ++p) {
  75       Devirtualizer::do_oop(closure, p);
  76     }
  77   }
  78 }
  79 
  80 template <typename T, class OopClosureType>
  81 inline void ValueKlass::oop_iterate_specialized_bounded(const address oop_addr, OopClosureType* closure, void* lo, void* hi) {
  82   OopMapBlock* map = start_of_nonstatic_oop_maps();
  83   OopMapBlock* const end_map = map + nonstatic_oop_map_count();
  84 
  85   T* const l   = (T*) lo;
  86   T* const h   = (T*) hi;
  87 
  88   for (; map < end_map; map++) {
  89     T* p = (T*) (oop_addr + map->offset());
  90     T* end = p + map->count();
  91     if (p < l) {
  92       p = l;
  93     }
  94     if (end > h) {
  95       end = h;
  96     }
  97     for (; p < end; ++p) {
  98       Devirtualizer::do_oop(closure, p);
  99     }
 100   }
 101 }
 102 
 103 
 104 #endif // SHARE_VM_OOPS_VALUEKLASS_INLINE_HPP