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annotate src/share/vm/memory/gcLocker.inline.hpp @ 17876:9c3dc501b5eb

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8028498: runtime/SharedArchiveFile/CdsDifferentObjectAlignment.java asserts in RT_Baseline Summary: Preventing GCs to occur before VM is completely initialized. This was previously partly done by one part of the GC locker which not was removed. Reviewed-by: coleenp, pliden
author sjohanss
date Thu, 13 Feb 2014 10:05:03 +0100
parents ad3b47344802
children
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1 /*
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2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_MEMORY_GCLOCKER_INLINE_HPP
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26 #define SHARE_VM_MEMORY_GCLOCKER_INLINE_HPP
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27
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28 #include "memory/gcLocker.hpp"
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29
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30 inline void GC_locker::lock_critical(JavaThread* thread) {
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31 if (!thread->in_critical()) {
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32 if (needs_gc()) {
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33 // jni_lock call calls enter_critical under the lock so that the
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34 // global lock count and per thread count are in agreement.
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35 jni_lock(thread);
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36 return;
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37 }
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38 increment_debug_jni_lock_count();
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39 }
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40 thread->enter_critical();
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41 }
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42
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43 inline void GC_locker::unlock_critical(JavaThread* thread) {
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44 if (thread->in_last_critical()) {
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45 if (needs_gc()) {
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46 // jni_unlock call calls exit_critical under the lock so that
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47 // the global lock count and per thread count are in agreement.
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48 jni_unlock(thread);
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49 return;
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50 }
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51 decrement_debug_jni_lock_count();
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52 }
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53 thread->exit_critical();
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54 }
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55
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56 #endif // SHARE_VM_MEMORY_GCLOCKER_INLINE_HPP