jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/parallelScavenge/psScavenge.inline.hpp@8a729074feae (annotated)

src/share/vm/gc_implementation/parallelScavenge/psScavenge.inline.hpp@8a729074feae (annotated)

src/share/vm/gc_implementation/parallelScavenge/psScavenge.inline.hpp

Fri, 16 Mar 2012 16:14:04 +0100

author: nloodin
date: Fri, 16 Mar 2012 16:14:04 +0100
changeset 3665: 8a729074feae
parent 3536: 95f6641e38e0
child 4037: da91efe96a93
permissions: -rw-r--r--

7154517: Build error in hotspot-gc without precompiled headers
Reviewed-by: jcoomes, brutisso

 /*
  * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSSCAVENGE_INLINE_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSSCAVENGE_INLINE_HPP
 #include "gc_implementation/parallelScavenge/cardTableExtension.hpp"
 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
 #include "gc_implementation/parallelScavenge/psPromotionManager.hpp"
 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
 inline void PSScavenge::save_to_space_top_before_gc() {
   ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
   _to_space_top_before_gc = heap->young_gen()->to_space()->top();
 }
 template <class T> inline bool PSScavenge::should_scavenge(T* p) {
   T heap_oop = oopDesc::load_heap_oop(p);
   if (oopDesc::is_null(heap_oop)) return false;
   oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
   return PSScavenge::is_obj_in_young((HeapWord*)obj);
 }
 template <class T>
 inline bool PSScavenge::should_scavenge(T* p, MutableSpace* to_space) {
   if (should_scavenge(p)) {
     oop obj = oopDesc::load_decode_heap_oop_not_null(p);
     // Skip objects copied to to_space since the scavenge started.
     HeapWord* const addr = (HeapWord*)obj;
     return addr < to_space_top_before_gc() || addr >= to_space->end();
   }
   return false;
 }
 template <class T>
 inline bool PSScavenge::should_scavenge(T* p, bool check_to_space) {
   if (check_to_space) {
     ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
     return should_scavenge(p, heap->young_gen()->to_space());
   }
   return should_scavenge(p);
 }
 // Attempt to "claim" oop at p via CAS, push the new obj if successful
 // This version tests the oop* to make sure it is within the heap before
 // attempting marking.
 template <class T, bool promote_immediately>
 inline void PSScavenge::copy_and_push_safe_barrier(PSPromotionManager* pm,
                                                    T*                  p) {
   assert(should_scavenge(p, true), "revisiting object?");
   oop o = oopDesc::load_decode_heap_oop_not_null(p);
   oop new_obj = o->is_forwarded()
         ? o->forwardee()
         : pm->copy_to_survivor_space<promote_immediately>(o);
   oopDesc::encode_store_heap_oop_not_null(p, new_obj);
   // We cannot mark without test, as some code passes us pointers
   // that are outside the heap.
   if ((!PSScavenge::is_obj_in_young((HeapWord*)p)) &&
       Universe::heap()->is_in_reserved(p)) {
     if (PSScavenge::is_obj_in_young((HeapWord*)new_obj)) {
       card_table()->inline_write_ref_field_gc(p, new_obj);
     }
   }
 }
 template<bool promote_immediately>
 class PSRootsClosure: public OopClosure {
  private:
   PSPromotionManager* _promotion_manager;
  protected:
   template <class T> void do_oop_work(T *p) {
     if (PSScavenge::should_scavenge(p)) {
       // We never card mark roots, maybe call a func without test?
       PSScavenge::copy_and_push_safe_barrier<T, promote_immediately>(_promotion_manager, p);
     }
   }
  public:
   PSRootsClosure(PSPromotionManager* pm) : _promotion_manager(pm) { }
   void do_oop(oop* p)       { PSRootsClosure::do_oop_work(p); }
   void do_oop(narrowOop* p) { PSRootsClosure::do_oop_work(p); }
 };
 typedef PSRootsClosure</*promote_immediately=*/false> PSScavengeRootsClosure;
 typedef PSRootsClosure</*promote_immediately=*/true> PSPromoteRootsClosure;
 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSSCAVENGE_INLINE_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/parallelScavenge/psScavenge.inline.hpp@8a729074feae (annotated)

src/share/vm/gc_implementation/parallelScavenge/psScavenge.inline.hpp