ysr@777: /*
ysr@777:  * Copyright 2001-2007 Sun Microsystems, Inc.  All Rights Reserved.
ysr@777:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ysr@777:  *
ysr@777:  * This code is free software; you can redistribute it and/or modify it
ysr@777:  * under the terms of the GNU General Public License version 2 only, as
ysr@777:  * published by the Free Software Foundation.
ysr@777:  *
ysr@777:  * This code is distributed in the hope that it will be useful, but WITHOUT
ysr@777:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ysr@777:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ysr@777:  * version 2 for more details (a copy is included in the LICENSE file that
ysr@777:  * accompanied this code).
ysr@777:  *
ysr@777:  * You should have received a copy of the GNU General Public License version
ysr@777:  * 2 along with this work; if not, write to the Free Software Foundation,
ysr@777:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ysr@777:  *
ysr@777:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
ysr@777:  * CA 95054 USA or visit www.sun.com if you need additional information or
ysr@777:  * have any questions.
ysr@777:  *
ysr@777:  */
ysr@777: 
ysr@777: // Inline functions for G1CollectedHeap
ysr@777: 
ysr@777: inline HeapRegion*
ysr@777: G1CollectedHeap::heap_region_containing(const void* addr) const {
ysr@777:   HeapRegion* hr = _hrs->addr_to_region(addr);
ysr@777:   // hr can be null if addr in perm_gen
ysr@777:   if (hr != NULL && hr->continuesHumongous()) {
ysr@777:     hr = hr->humongous_start_region();
ysr@777:   }
ysr@777:   return hr;
ysr@777: }
ysr@777: 
ysr@777: inline HeapRegion*
ysr@777: G1CollectedHeap::heap_region_containing_raw(const void* addr) const {
ysr@777:   HeapRegion* res = _hrs->addr_to_region(addr);
ysr@777:   assert(res != NULL, "addr outside of heap?");
ysr@777:   return res;
ysr@777: }
ysr@777: 
ysr@777: inline bool G1CollectedHeap::obj_in_cs(oop obj) {
ysr@777:   HeapRegion* r = _hrs->addr_to_region(obj);
ysr@777:   return r != NULL && r->in_collection_set();
ysr@777: }
ysr@777: 
ysr@777: inline HeapWord* G1CollectedHeap::attempt_allocation(size_t word_size,
ysr@777:                                               bool permit_collection_pause) {
ysr@777:   HeapWord* res = NULL;
ysr@777: 
ysr@777:   assert( SafepointSynchronize::is_at_safepoint() ||
ysr@777:           Heap_lock->owned_by_self(), "pre-condition of the call" );
ysr@777: 
ysr@777:   if (_cur_alloc_region != NULL) {
ysr@777: 
ysr@777:     // If this allocation causes a region to become non empty,
ysr@777:     // then we need to update our free_regions count.
ysr@777: 
ysr@777:     if (_cur_alloc_region->is_empty()) {
ysr@777:       res = _cur_alloc_region->allocate(word_size);
ysr@777:       if (res != NULL)
ysr@777:         _free_regions--;
ysr@777:     } else {
ysr@777:       res = _cur_alloc_region->allocate(word_size);
ysr@777:     }
ysr@777:   }
ysr@777:   if (res != NULL) {
ysr@777:     if (!SafepointSynchronize::is_at_safepoint()) {
ysr@777:       assert( Heap_lock->owned_by_self(), "invariant" );
ysr@777:       Heap_lock->unlock();
ysr@777:     }
ysr@777:     return res;
ysr@777:   }
ysr@777:   // attempt_allocation_slow will also unlock the heap lock when appropriate.
ysr@777:   return attempt_allocation_slow(word_size, permit_collection_pause);
ysr@777: }
ysr@777: 
ysr@777: inline RefToScanQueue* G1CollectedHeap::task_queue(int i) {
ysr@777:   return _task_queues->queue(i);
ysr@777: }
ysr@777: 
ysr@777: 
ysr@777: inline  bool G1CollectedHeap::isMarkedPrev(oop obj) const {
ysr@777:   return _cm->prevMarkBitMap()->isMarked((HeapWord *)obj);
ysr@777: }
ysr@777: 
ysr@777: inline bool G1CollectedHeap::isMarkedNext(oop obj) const {
ysr@777:   return _cm->nextMarkBitMap()->isMarked((HeapWord *)obj);
ysr@777: }