1 /*
   2  * Copyright (c) 2019, Red Hat, Inc. All rights reserved.
   3  *
   4  * This code is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This code is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  * version 2 for more details (a copy is included in the LICENSE file that
  12  * accompanied this code).
  13  *
  14  * You should have received a copy of the GNU General Public License version
  15  * 2 along with this work; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  *
  22  */
  23 
  24 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHPARALLELCLEANING_INLINE_HPP
  25 #define SHARE_GC_SHENANDOAH_SHENANDOAHPARALLELCLEANING_INLINE_HPP
  26 
  27 #include "gc/shenandoah/shenandoahHeap.hpp"
  28 #include "gc/shenandoah/shenandoahParallelCleaning.hpp"
  29 #include "gc/shenandoah/shenandoahUtils.hpp"
  30 #include "runtime/thread.hpp"
  31 #include "runtime/safepoint.hpp"
  32 
  33 template<typename IsAlive, typename KeepAlive>
  34 ShenandoahParallelWeakRootsCleaningTask<IsAlive, KeepAlive>::ShenandoahParallelWeakRootsCleaningTask(IsAlive* is_alive,
  35                                                                                                      KeepAlive* keep_alive,
  36                                                                                                      uint num_workers) :
  37   AbstractGangTask("Parallel Weak Root Cleaning Task"),
  38   _weak_roots(num_workers),
  39   _is_alive(is_alive), _keep_alive(keep_alive) {
  40   assert(SafepointSynchronize::is_at_safepoint(), "Must be at a safepoint");
  41 
  42   if (ShenandoahStringDedup::is_enabled()) {
  43     StringDedup::gc_prologue(false);
  44   }
  45 }
  46 
  47 template<typename IsAlive, typename KeepAlive>
  48 ShenandoahParallelWeakRootsCleaningTask<IsAlive, KeepAlive>::~ShenandoahParallelWeakRootsCleaningTask() {
  49   if (StringDedup::is_enabled()) {
  50     StringDedup::gc_epilogue();
  51   }
  52 }
  53 
  54 template<typename IsAlive, typename KeepAlive>
  55 void ShenandoahParallelWeakRootsCleaningTask<IsAlive, KeepAlive>::work(uint worker_id) {
  56   _weak_roots.oops_do<IsAlive, KeepAlive>(_is_alive, _keep_alive, worker_id);
  57 
  58   if (ShenandoahStringDedup::is_enabled()) {
  59     ShenandoahStringDedup::parallel_oops_do(_is_alive, _keep_alive, worker_id);
  60   }
  61 }
  62 
  63 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHPARALLELCLEANING_INLINE_HPP