1 /*
   2  * Copyright (c) 2001, 2009, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 # include "incls/_precompiled.incl"
  26 # include "incls/_ptrQueue.cpp.incl"













  27 
  28 PtrQueue::PtrQueue(PtrQueueSet* qset_, bool perm, bool active) :
  29   _qset(qset_), _buf(NULL), _index(0), _active(active),
  30   _perm(perm), _lock(NULL)
  31 {}
  32 
  33 void PtrQueue::flush() {
  34   if (!_perm && _buf != NULL) {
  35     if (_index == _sz) {
  36       // No work to do.
  37       qset()->deallocate_buffer(_buf);
  38     } else {
  39       // We must NULL out the unused entries, then enqueue.
  40       for (size_t i = 0; i < _index; i += oopSize) {
  41         _buf[byte_index_to_index((int)i)] = NULL;
  42       }
  43       qset()->enqueue_complete_buffer(_buf);
  44     }
  45     _buf = NULL;
  46     _index = 0;

   1 /*
   2  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "gc_implementation/g1/ptrQueue.hpp"
  27 #include "memory/allocation.hpp"
  28 #include "memory/allocation.inline.hpp"
  29 #include "runtime/mutex.hpp"
  30 #include "runtime/mutexLocker.hpp"
  31 #ifdef TARGET_OS_FAMILY_linux
  32 # include "thread_linux.inline.hpp"
  33 #endif
  34 #ifdef TARGET_OS_FAMILY_solaris
  35 # include "thread_solaris.inline.hpp"
  36 #endif
  37 #ifdef TARGET_OS_FAMILY_windows
  38 # include "thread_windows.inline.hpp"
  39 #endif
  40 
  41 PtrQueue::PtrQueue(PtrQueueSet* qset_, bool perm, bool active) :
  42   _qset(qset_), _buf(NULL), _index(0), _active(active),
  43   _perm(perm), _lock(NULL)
  44 {}
  45 
  46 void PtrQueue::flush() {
  47   if (!_perm && _buf != NULL) {
  48     if (_index == _sz) {
  49       // No work to do.
  50       qset()->deallocate_buffer(_buf);
  51     } else {
  52       // We must NULL out the unused entries, then enqueue.
  53       for (size_t i = 0; i < _index; i += oopSize) {
  54         _buf[byte_index_to_index((int)i)] = NULL;
  55       }
  56       qset()->enqueue_complete_buffer(_buf);
  57     }
  58     _buf = NULL;
  59     _index = 0;