author | kbarrett |
Wed, 13 Nov 2019 18:00:30 -0500 | |
changeset 59067 | f080b08daace |
parent 54623 | 1126f0607c70 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "precompiled.hpp" |
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#include "gc/g1/g1DirtyCardQueue.hpp" |
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#include "gc/g1/g1SharedDirtyCardQueue.hpp" |
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#include "gc/shared/ptrQueue.hpp" |
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#include "runtime/mutex.hpp" |
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#include "runtime/mutexLocker.hpp" |
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G1SharedDirtyCardQueue::G1SharedDirtyCardQueue(G1DirtyCardQueueSet* qset) : |
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_qset(qset), |
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_buffer(NULL), |
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_index(0) |
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{} |
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G1SharedDirtyCardQueue::~G1SharedDirtyCardQueue() { |
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flush(); |
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} |
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void G1SharedDirtyCardQueue::enqueue(void* card_ptr) { |
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54623
1126f0607c70
8222811: Consolidate MutexLockerEx and MutexLocker
coleenp
parents:
54255
diff
changeset
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MutexLocker ml(Shared_DirtyCardQ_lock, Mutex::_no_safepoint_check_flag); |
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if (_index == 0) { |
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flush(); |
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_buffer = _qset->allocate_buffer(); |
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_index = _qset->buffer_size(); |
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assert(_index != 0, "invariant"); |
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} |
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_buffer[--_index] = card_ptr; |
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} |
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void G1SharedDirtyCardQueue::flush() { |
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if (_buffer != NULL) { |
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BufferNode* node = BufferNode::make_node_from_buffer(_buffer, _index); |
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_buffer = NULL; |
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_index = 0; |
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if (node->index() == _qset->buffer_size()) { |
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_qset->deallocate_buffer(node); |
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} else { |
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_qset->enqueue_completed_buffer(node); |
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} |
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} |
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assert(_index == 0, "invariant"); |
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} |
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void G1SharedDirtyCardQueue::reset() { |
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if (_buffer == NULL) { |
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_index = 0; |
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} else { |
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_index = _qset->buffer_size(); |
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} |
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} |