1 /*
   2  * Copyright (c) 2015, 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 #include "precompiled.hpp"
  25 #include "gc/z/zAddress.inline.hpp"
  26 #include "gc/z/zBarrier.inline.hpp"
  27 #include "gc/z/zHeap.hpp"
  28 #include "gc/z/zOopClosures.inline.hpp"
  29 #include "gc/z/zPage.hpp"
  30 #include "gc/z/zRelocate.hpp"
  31 #include "gc/z/zRelocationSet.inline.hpp"
  32 #include "gc/z/zRootsIterator.hpp"
  33 #include "gc/z/zTask.hpp"

  34 #include "gc/z/zWorkers.hpp"
  35 
  36 ZRelocate::ZRelocate(ZWorkers* workers) :
  37     _workers(workers) {}
  38 
  39 class ZRelocateRootsIteratorClosure : public ZRootsIteratorClosure {
  40 private:
  41   static void remap_address(HeapWord** p) {
  42     *p = (HeapWord*)ZAddress::good_or_null((uintptr_t)*p);
  43   }
  44 
  45 public:
  46   virtual void do_thread(Thread* thread) {
  47     ZRootsIteratorClosure::do_thread(thread);
  48 
  49     // Update thread local address bad mask
  50     ZThreadLocalData::set_address_bad_mask(thread, ZAddressBadMask);
  51 
  52     // Remap TLAB
  53     if (UseTLAB && thread->is_Java_thread()) {
  54       thread->tlab().addresses_do(remap_address);
  55     }
  56   }
  57 
  58   virtual void do_oop(oop* p) {
  59     ZBarrier::relocate_barrier_on_root_oop_field(p);
  60   }
  61 
  62   virtual void do_oop(narrowOop* p) {
  63     ShouldNotReachHere();
  64   }
  65 };
  66 
  67 class ZRelocateRootsTask : public ZTask {
  68 private:
  69   ZRootsIterator                _roots;
  70   ZRelocateRootsIteratorClosure _cl;
  71 
  72 public:
  73   ZRelocateRootsTask() :
  74       ZTask("ZRelocateRootsTask"),
  75       _roots() {}

   1 /*
   2  * Copyright (c) 2015, 2019, 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 #include "precompiled.hpp"
  25 #include "gc/z/zAddress.inline.hpp"
  26 #include "gc/z/zBarrier.inline.hpp"
  27 #include "gc/z/zHeap.hpp"
  28 #include "gc/z/zOopClosures.inline.hpp"
  29 #include "gc/z/zPage.hpp"
  30 #include "gc/z/zRelocate.hpp"
  31 #include "gc/z/zRelocationSet.inline.hpp"
  32 #include "gc/z/zRootsIterator.hpp"
  33 #include "gc/z/zTask.hpp"
  34 #include "gc/z/zThreadLocalAllocBuffer.hpp"
  35 #include "gc/z/zWorkers.hpp"
  36 
  37 ZRelocate::ZRelocate(ZWorkers* workers) :
  38     _workers(workers) {}
  39 
  40 class ZRelocateRootsIteratorClosure : public ZRootsIteratorClosure {





  41 public:
  42   virtual void do_thread(Thread* thread) {
  43     ZRootsIteratorClosure::do_thread(thread);
  44 
  45     // Update thread local address bad mask
  46     ZThreadLocalData::set_address_bad_mask(thread, ZAddressBadMask);
  47 
  48     // Remap TLAB
  49     ZThreadLocalAllocBuffer::remap(thread);


  50   }
  51 
  52   virtual void do_oop(oop* p) {
  53     ZBarrier::relocate_barrier_on_root_oop_field(p);
  54   }
  55 
  56   virtual void do_oop(narrowOop* p) {
  57     ShouldNotReachHere();
  58   }
  59 };
  60 
  61 class ZRelocateRootsTask : public ZTask {
  62 private:
  63   ZRootsIterator                _roots;
  64   ZRelocateRootsIteratorClosure _cl;
  65 
  66 public:
  67   ZRelocateRootsTask() :
  68       ZTask("ZRelocateRootsTask"),
  69       _roots() {}