Mercurial > hg > truffle
annotate src/cpu/x86/vm/rtmLocking.cpp @ 20304:a22acf6d7598
8048112: G1 Full GC needs to support the case when the very first region is not available
Summary: Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett.
Reviewed-by: brutisso
| author | tschatzl |
|---|---|
| date | Mon, 21 Jul 2014 10:00:31 +0200 |
| parents | 52b37289e3be |
| children |
| rev | line source |
|---|---|
| 17780 | 1 /* |
| 2 * Copyright (c) 2014, 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" | |
|
17781
52b37289e3be
8038181: Can't build product VM without precompiled header
kvn
parents:
17780
diff
changeset
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26 #include "memory/allocation.inline.hpp" |
| 17780 | 27 #include "runtime/task.hpp" |
| 28 #include "runtime/rtmLocking.hpp" | |
| 29 | |
| 30 // One-shot PeriodicTask subclass for enabling RTM locking | |
| 31 uintx RTMLockingCounters::_calculation_flag = 0; | |
| 32 | |
| 33 class RTMLockingCalculationTask : public PeriodicTask { | |
| 34 public: | |
| 35 RTMLockingCalculationTask(size_t interval_time) : PeriodicTask(interval_time){ } | |
| 36 | |
| 37 virtual void task() { | |
| 38 RTMLockingCounters::_calculation_flag = 1; | |
| 39 // Reclaim our storage and disenroll ourself | |
| 40 delete this; | |
| 41 } | |
| 42 }; | |
| 43 | |
| 44 void RTMLockingCounters::init() { | |
| 45 if (UseRTMLocking && RTMLockingCalculationDelay > 0) { | |
| 46 RTMLockingCalculationTask* task = new RTMLockingCalculationTask(RTMLockingCalculationDelay); | |
| 47 task->enroll(); | |
| 48 } else { | |
| 49 _calculation_flag = 1; | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 //------------------------------print_on------------------------------- | |
| 54 void RTMLockingCounters::print_on(outputStream* st) { | |
| 55 tty->print_cr("# rtm locks total (estimated): " UINTX_FORMAT, _total_count * RTMTotalCountIncrRate); | |
| 56 tty->print_cr("# rtm lock aborts : " UINTX_FORMAT, _abort_count); | |
| 57 for (int i = 0; i < ABORT_STATUS_LIMIT; i++) { | |
| 58 tty->print_cr("# rtm lock aborts %d: " UINTX_FORMAT, i, _abortX_count[i]); | |
| 59 } | |
| 60 } |