tonyp@2472: /*
jwilhelm@6422:  * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
tonyp@2472:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
tonyp@2472:  *
tonyp@2472:  * This code is free software; you can redistribute it and/or modify it
tonyp@2472:  * under the terms of the GNU General Public License version 2 only, as
tonyp@2472:  * published by the Free Software Foundation.
tonyp@2472:  *
tonyp@2472:  * This code is distributed in the hope that it will be useful, but WITHOUT
tonyp@2472:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
tonyp@2472:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
tonyp@2472:  * version 2 for more details (a copy is included in the LICENSE file that
tonyp@2472:  * accompanied this code).
tonyp@2472:  *
tonyp@2472:  * You should have received a copy of the GNU General Public License version
tonyp@2472:  * 2 along with this work; if not, write to the Free Software Foundation,
tonyp@2472:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
tonyp@2472:  *
tonyp@2472:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
tonyp@2472:  * or visit www.oracle.com if you need additional information or have any
tonyp@2472:  * questions.
tonyp@2472:  *
tonyp@2472:  */
tonyp@2472: 
tonyp@2472: #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP
tonyp@2472: #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP
tonyp@2472: 
tonyp@2472: #include "gc_implementation/g1/heapRegionSet.hpp"
tonyp@2472: 
brutisso@6385: inline void HeapRegionSetBase::add(HeapRegion* hr) {
brutisso@6385:   check_mt_safety();
brutisso@6385:   assert(hr->containing_set() == NULL, hrs_ext_msg(this, "should not already have a containing set %u"));
tschatzl@7050:   assert(hr->next() == NULL, hrs_ext_msg(this, "should not already be linked"));
tschatzl@7050:   assert(hr->prev() == NULL, hrs_ext_msg(this, "should not already be linked"));
tonyp@2472: 
brutisso@6385:   _count.increment(1u, hr->capacity());
brutisso@6385:   hr->set_containing_set(this);
brutisso@6385:   verify_region(hr);
tonyp@2472: }
tonyp@2472: 
brutisso@6385: inline void HeapRegionSetBase::remove(HeapRegion* hr) {
brutisso@6385:   check_mt_safety();
brutisso@6385:   verify_region(hr);
tschatzl@7050:   assert(hr->next() == NULL, hrs_ext_msg(this, "should already be unlinked"));
tschatzl@7050:   assert(hr->prev() == NULL, hrs_ext_msg(this, "should already be unlinked"));
tonyp@2472: 
tonyp@2472:   hr->set_containing_set(NULL);
brutisso@6385:   assert(_count.length() > 0, hrs_ext_msg(this, "pre-condition"));
brutisso@6385:   _count.decrement(1u, hr->capacity());
tonyp@2472: }
tonyp@2472: 
jwilhelm@6422: inline void FreeRegionList::add_ordered(HeapRegion* hr) {
tschatzl@7050:   assert((length() == 0 && _head == NULL && _tail == NULL && _last == NULL) ||
jwilhelm@6422:          (length() >  0 && _head != NULL && _tail != NULL),
jwilhelm@6422:          hrs_ext_msg(this, "invariant"));
jwilhelm@6422:   // add() will verify the region and check mt safety.
jwilhelm@6422:   add(hr);
jwilhelm@6422: 
jwilhelm@6422:   // Now link the region
jwilhelm@6422:   if (_head != NULL) {
jwilhelm@6422:     HeapRegion* curr;
jwilhelm@6422: 
tschatzl@7091:     if (_last != NULL && _last->hrm_index() < hr->hrm_index()) {
jwilhelm@6422:       curr = _last;
jwilhelm@6422:     } else {
jwilhelm@6422:       curr = _head;
jwilhelm@6422:     }
jwilhelm@6422: 
jwilhelm@6422:     // Find first entry with a Region Index larger than entry to insert.
tschatzl@7091:     while (curr != NULL && curr->hrm_index() < hr->hrm_index()) {
jwilhelm@6422:       curr = curr->next();
jwilhelm@6422:     }
jwilhelm@6422: 
jwilhelm@6422:     hr->set_next(curr);
jwilhelm@6422: 
jwilhelm@6422:     if (curr == NULL) {
jwilhelm@6422:       // Adding at the end
jwilhelm@6422:       hr->set_prev(_tail);
jwilhelm@6422:       _tail->set_next(hr);
jwilhelm@6422:       _tail = hr;
jwilhelm@6422:     } else if (curr->prev() == NULL) {
jwilhelm@6422:       // Adding at the beginning
jwilhelm@6422:       hr->set_prev(NULL);
jwilhelm@6422:       _head = hr;
jwilhelm@6422:       curr->set_prev(hr);
jwilhelm@6422:     } else {
jwilhelm@6422:       hr->set_prev(curr->prev());
jwilhelm@6422:       hr->prev()->set_next(hr);
jwilhelm@6422:       curr->set_prev(hr);
jwilhelm@6422:     }
jwilhelm@6422:   } else {
jwilhelm@6422:     // The list was empty
jwilhelm@6422:     _tail = hr;
jwilhelm@6422:     _head = hr;
jwilhelm@6422:   }
jwilhelm@6422:   _last = hr;
jwilhelm@6422: }
jwilhelm@6422: 
tschatzl@7050: inline HeapRegion* FreeRegionList::remove_from_head_impl() {
tschatzl@7050:   HeapRegion* result = _head;
tschatzl@7050:   _head = result->next();
tonyp@2472:   if (_head == NULL) {
tonyp@2472:     _tail = NULL;
jwilhelm@6422:   } else {
jwilhelm@6422:     _head->set_prev(NULL);
tonyp@2472:   }
tschatzl@7050:   result->set_next(NULL);
tschatzl@7050:   return result;
tschatzl@7050: }
tschatzl@7050: 
tschatzl@7050: inline HeapRegion* FreeRegionList::remove_from_tail_impl() {
tschatzl@7050:   HeapRegion* result = _tail;
tschatzl@7050: 
tschatzl@7050:   _tail = result->prev();
tschatzl@7050:   if (_tail == NULL) {
tschatzl@7050:     _head = NULL;
tschatzl@7050:   } else {
tschatzl@7050:     _tail->set_next(NULL);
tschatzl@7050:   }
tschatzl@7050:   result->set_prev(NULL);
tschatzl@7050:   return result;
tschatzl@7050: }
tschatzl@7050: 
tschatzl@7050: inline HeapRegion* FreeRegionList::remove_region(bool from_head) {
tschatzl@7050:   check_mt_safety();
tschatzl@7050:   verify_optional();
tschatzl@7050: 
tschatzl@7050:   if (is_empty()) {
tschatzl@7050:     return NULL;
tschatzl@7050:   }
tschatzl@7050:   assert(length() > 0 && _head != NULL && _tail != NULL,
tschatzl@7050:          hrs_ext_msg(this, "invariant"));
tschatzl@7050: 
tschatzl@7050:   HeapRegion* hr;
tschatzl@7050: 
tschatzl@7050:   if (from_head) {
tschatzl@7050:     hr = remove_from_head_impl();
tschatzl@7050:   } else {
tschatzl@7050:     hr = remove_from_tail_impl();
tschatzl@7050:   }
tonyp@2472: 
jwilhelm@6422:   if (_last == hr) {
jwilhelm@6422:     _last = NULL;
jwilhelm@6422:   }
jwilhelm@6422: 
jwilhelm@6422:   // remove() will verify the region and check mt safety.
brutisso@6385:   remove(hr);
tonyp@2472:   return hr;
tonyp@2472: }
tonyp@2472: 
tschatzl@7050: #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP
tonyp@2472: