jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp@4f93f0d00802 (annotated)

src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp@4f93f0d00802 (annotated)

src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp

Tue, 20 Sep 2011 09:59:59 -0400

author: tonyp
date: Tue, 20 Sep 2011 09:59:59 -0400
changeset 3168: 4f93f0d00802
parent 3028: f44782f04dd4
child 4016: c9814fadeb38
permissions: -rw-r--r--

7059019: G1: add G1 support to the SA
Summary: Extend the SA to recognize the G1CollectedHeap and implement any code that's needed by our serviceability tools (jmap, jinfo, jstack, etc.) that depend on the SA.
Reviewed-by: never, poonam, johnc

 /*
  * Copyright (c) 2001, 2011, 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_G1_G1COLLECTEDHEAP_INLINE_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP
 #include "gc_implementation/g1/concurrentMark.hpp"
 #include "gc_implementation/g1/g1CollectedHeap.hpp"
 #include "gc_implementation/g1/g1AllocRegion.inline.hpp"
 #include "gc_implementation/g1/g1CollectorPolicy.hpp"
 #include "gc_implementation/g1/heapRegionSeq.inline.hpp"
 #include "utilities/taskqueue.hpp"
 // Inline functions for G1CollectedHeap
 template <class T>
 inline HeapRegion*
 G1CollectedHeap::heap_region_containing(const T addr) const {
   HeapRegion* hr = _hrs.addr_to_region((HeapWord*) addr);
   // hr can be null if addr in perm_gen
   if (hr != NULL && hr->continuesHumongous()) {
     hr = hr->humongous_start_region();
   }
   return hr;
 }
 template <class T>
 inline HeapRegion*
 G1CollectedHeap::heap_region_containing_raw(const T addr) const {
   assert(_g1_reserved.contains((const void*) addr), "invariant");
   HeapRegion* res = _hrs.addr_to_region_unsafe((HeapWord*) addr);
   return res;
 }
 inline bool G1CollectedHeap::obj_in_cs(oop obj) {
   HeapRegion* r = _hrs.addr_to_region((HeapWord*) obj);
   return r != NULL && r->in_collection_set();
 }
 inline HeapWord*
 G1CollectedHeap::attempt_allocation(size_t word_size,
                                     unsigned int* gc_count_before_ret) {
   assert_heap_not_locked_and_not_at_safepoint();
   assert(!isHumongous(word_size), "attempt_allocation() should not "
          "be called for humongous allocation requests");
   HeapWord* result = _mutator_alloc_region.attempt_allocation(word_size,
                                                       false /* bot_updates */);
   if (result == NULL) {
     result = attempt_allocation_slow(word_size, gc_count_before_ret);
   }
   assert_heap_not_locked();
   if (result != NULL) {
     dirty_young_block(result, word_size);
   }
   return result;
 }
 inline HeapWord* G1CollectedHeap::survivor_attempt_allocation(size_t
                                                               word_size) {
   assert(!isHumongous(word_size),
          "we should not be seeing humongous-size allocations in this path");
   HeapWord* result = _survivor_gc_alloc_region.attempt_allocation(word_size,
                                                       false /* bot_updates */);
   if (result == NULL) {
     MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag);
     result = _survivor_gc_alloc_region.attempt_allocation_locked(word_size,
                                                       false /* bot_updates */);
   }
   if (result != NULL) {
     dirty_young_block(result, word_size);
   }
   return result;
 }
 inline HeapWord* G1CollectedHeap::old_attempt_allocation(size_t word_size) {
   assert(!isHumongous(word_size),
          "we should not be seeing humongous-size allocations in this path");
   HeapWord* result = _old_gc_alloc_region.attempt_allocation(word_size,
                                                        true /* bot_updates */);
   if (result == NULL) {
     MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag);
     result = _old_gc_alloc_region.attempt_allocation_locked(word_size,
                                                        true /* bot_updates */);
   }
   return result;
 }
 // It dirties the cards that cover the block so that so that the post
 // write barrier never queues anything when updating objects on this
 // block. It is assumed (and in fact we assert) that the block
 // belongs to a young region.
 inline void
 G1CollectedHeap::dirty_young_block(HeapWord* start, size_t word_size) {
   assert_heap_not_locked();
   // Assign the containing region to containing_hr so that we don't
   // have to keep calling heap_region_containing_raw() in the
   // asserts below.
   DEBUG_ONLY(HeapRegion* containing_hr = heap_region_containing_raw(start);)
   assert(containing_hr != NULL && start != NULL && word_size > 0,
          "pre-condition");
   assert(containing_hr->is_in(start), "it should contain start");
   assert(containing_hr->is_young(), "it should be young");
   assert(!containing_hr->isHumongous(), "it should not be humongous");
   HeapWord* end = start + word_size;
   assert(containing_hr->is_in(end - 1), "it should also contain end - 1");
   MemRegion mr(start, end);
   ((CardTableModRefBS*)_g1h->barrier_set())->dirty(mr);
 }
 inline RefToScanQueue* G1CollectedHeap::task_queue(int i) const {
   return _task_queues->queue(i);
 }
 inline  bool G1CollectedHeap::isMarkedPrev(oop obj) const {
   return _cm->prevMarkBitMap()->isMarked((HeapWord *)obj);
 }
 inline bool G1CollectedHeap::isMarkedNext(oop obj) const {
   return _cm->nextMarkBitMap()->isMarked((HeapWord *)obj);
 }
 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp@4f93f0d00802 (annotated)

src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp