src/hotspot/share/gc/z/zHeap.inline.hpp
author pliden
Mon, 18 Mar 2019 11:50:39 +0100
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child 54164 c585ef187216
permissions -rw-r--r--
8220588: ZGC: Convert ZRelocationSet to hold ZForwardings instead of ZPages Reviewed-by: stefank, eosterlund
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/*
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 * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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#ifndef SHARE_GC_Z_ZHEAP_INLINE_HPP
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#define SHARE_GC_Z_ZHEAP_INLINE_HPP
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#include "gc/z/zAddress.inline.hpp"
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#include "gc/z/zForwarding.inline.hpp"
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#include "gc/z/zForwardingTable.inline.hpp"
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#include "gc/z/zHeap.hpp"
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#include "gc/z/zMark.inline.hpp"
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#include "gc/z/zOop.inline.hpp"
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#include "gc/z/zPage.inline.hpp"
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#include "gc/z/zPageTable.inline.hpp"
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#include "gc/z/zUtils.inline.hpp"
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#include "utilities/debug.hpp"
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inline ZHeap* ZHeap::heap() {
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  assert(_heap != NULL, "Not initialized");
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  return _heap;
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}
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inline ReferenceDiscoverer* ZHeap::reference_discoverer() {
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  return &_reference_processor;
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}
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inline bool ZHeap::is_object_live(uintptr_t addr) const {
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  ZPage* page = _pagetable.get(addr);
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  return page->is_object_live(addr);
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}
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inline bool ZHeap::is_object_strongly_live(uintptr_t addr) const {
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  ZPage* page = _pagetable.get(addr);
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  return page->is_object_strongly_live(addr);
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}
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template <bool finalizable, bool publish>
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inline void ZHeap::mark_object(uintptr_t addr) {
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  assert(ZGlobalPhase == ZPhaseMark, "Mark not allowed");
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  _mark.mark_object<finalizable, publish>(addr);
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}
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inline uintptr_t ZHeap::alloc_tlab(size_t size) {
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  guarantee(size <= max_tlab_size(), "TLAB too large");
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  return _object_allocator.alloc_object(size);
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}
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inline uintptr_t ZHeap::alloc_object(size_t size) {
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  uintptr_t addr = _object_allocator.alloc_object(size);
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  assert(ZAddress::is_good_or_null(addr), "Bad address");
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  if (addr == 0) {
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    out_of_memory();
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  }
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  return addr;
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}
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inline uintptr_t ZHeap::alloc_object_for_relocation(size_t size) {
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  uintptr_t addr = _object_allocator.alloc_object_for_relocation(size);
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  assert(ZAddress::is_good_or_null(addr), "Bad address");
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  return addr;
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}
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inline void ZHeap::undo_alloc_object_for_relocation(uintptr_t addr, size_t size) {
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  ZPage* const page = _pagetable.get(addr);
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  _object_allocator.undo_alloc_object_for_relocation(page, addr, size);
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}
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inline uintptr_t ZHeap::relocate_object(uintptr_t addr) {
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  assert(ZGlobalPhase == ZPhaseRelocate, "Relocate not allowed");
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  ZForwarding* const forwarding = _forwarding_table.get(addr);
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  if (forwarding == NULL) {
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    // Not forwarding
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    return ZAddress::good(addr);
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  }
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  // Relocate object
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  const bool retained = forwarding->retain_page();
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  const uintptr_t new_addr = _relocate.relocate_object(forwarding, addr);
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  if (retained) {
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    forwarding->release_page();
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  }
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  return new_addr;
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}
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inline uintptr_t ZHeap::remap_object(uintptr_t addr) {
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  assert(ZGlobalPhase == ZPhaseMark ||
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         ZGlobalPhase == ZPhaseMarkCompleted, "Forward not allowed");
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  ZForwarding* const forwarding = _forwarding_table.get(addr);
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  if (forwarding == NULL) {
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    // Not forwarding
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    return ZAddress::good(addr);
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  }
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  // Forward object
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  return _relocate.forward_object(forwarding, addr);
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}
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inline bool ZHeap::is_alloc_stalled() const {
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  return _page_allocator.is_alloc_stalled();
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}
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inline void ZHeap::check_out_of_memory() {
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  _page_allocator.check_out_of_memory();
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}
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inline bool ZHeap::is_oop(oop object) const {
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  return ZOop::is_good(object);
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}
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#endif // SHARE_GC_Z_ZHEAP_INLINE_HPP