1 /*
   2  * Copyright (c) 2018, 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 #ifndef SHARE_GC_SHARED_OOPSTORAGEPARSTATE_INLINE_HPP
  26 #define SHARE_GC_SHARED_OOPSTORAGEPARSTATE_INLINE_HPP
  27 
  28 #include "gc/shared/oopStorage.inline.hpp"
  29 #include "gc/shared/oopStorageParState.hpp"
  30 #include "metaprogramming/conditional.hpp"
  31 #include "utilities/macros.hpp"
  32 
  33 #if INCLUDE_ALL_GCS
  34 
  35 template<typename F>
  36 class OopStorage::BasicParState::AlwaysTrueFn {
  37   F _f;
  38 
  39 public:
  40   AlwaysTrueFn(F f) : _f(f) {}
  41 
  42   template<typename OopPtr>     // [const] oop*
  43   bool operator()(OopPtr ptr) const { _f(ptr); return true; }
  44 };
  45 
  46 template<bool is_const, typename F>
  47 inline void OopStorage::BasicParState::iterate(F f) {
  48   // Wrap f in ATF so we can use Block::iterate.
  49   AlwaysTrueFn<F> atf_f(f);
  50   ensure_iteration_started();
  51   typename Conditional<is_const, const Block*, Block*>::type block;
  52   while ((block = claim_next_block()) != NULL) {
  53     block->iterate(atf_f);
  54   }
  55 }
  56 
  57 template<bool concurrent, bool is_const>
  58 template<typename F>
  59 inline void OopStorage::ParState<concurrent, is_const>::iterate(F f) {
  60   _basic_state.template iterate<is_const>(f);
  61 }
  62 
  63 template<bool concurrent, bool is_const>
  64 template<typename Closure>
  65 inline void OopStorage::ParState<concurrent, is_const>::oops_do(Closure* cl) {
  66   this->iterate(oop_fn(cl));
  67 }
  68 
  69 template<typename F>
  70 inline void OopStorage::ParState<false, false>::iterate(F f) {
  71   _basic_state.template iterate<false>(f);
  72 }
  73 
  74 template<typename Closure>
  75 inline void OopStorage::ParState<false, false>::oops_do(Closure* cl) {
  76   this->iterate(oop_fn(cl));
  77 }
  78 
  79 template<typename Closure>
  80 inline void OopStorage::ParState<false, false>::weak_oops_do(Closure* cl) {
  81   this->iterate(skip_null_fn(oop_fn(cl)));
  82 }
  83 
  84 template<typename IsAliveClosure, typename Closure>
  85 inline void OopStorage::ParState<false, false>::weak_oops_do(IsAliveClosure* is_alive, Closure* cl) {
  86   this->iterate(if_alive_fn(is_alive, oop_fn(cl)));
  87 }
  88 
  89 #endif // INCLUDE_ALL_GCS
  90 
  91 #endif // SHARE_GC_SHARED_OOPSTORAGEPARSTATE_INLINE_HPP