annotate src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp @ 24234:ea6f94ab283b default tip

Added tag jvmci-0.36 for changeset 8128b98d4736
author Gilles Duboscq <gilles.m.duboscq@oracle.com>
date Mon, 18 Sep 2017 18:49:45 +0200
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1 /*
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2 * Copyright (c) 2007, 2015, 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 #include "precompiled.hpp"
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26 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp"
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27 #include "gc_implementation/parallelScavenge/psMarkSweep.hpp"
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28 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
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29 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
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30 #include "gc_implementation/parallelScavenge/vmPSOperations.hpp"
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31 #include "memory/gcLocker.inline.hpp"
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32 #include "utilities/dtrace.hpp"
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34 // The following methods are used by the parallel scavenge collector
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35 VM_ParallelGCFailedAllocation::VM_ParallelGCFailedAllocation(size_t word_size,
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36 uint gc_count) :
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37 VM_CollectForAllocation(word_size, gc_count, GCCause::_allocation_failure) {
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38 assert(word_size != 0, "An allocation should always be requested with this operation.");
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39 }
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40
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41 void VM_ParallelGCFailedAllocation::doit() {
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42 SvcGCMarker sgcm(SvcGCMarker::MINOR);
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44 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
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45 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");
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46
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47 GCCauseSetter gccs(heap, _gc_cause);
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48 _result = heap->failed_mem_allocate(_word_size);
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49
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50 if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
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51 set_gc_locked();
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52 }
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53 }
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54
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55 // Only used for System.gc() calls
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56 VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(uint gc_count,
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57 uint full_gc_count,
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58 GCCause::Cause gc_cause) :
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59 VM_GC_Operation(gc_count, gc_cause, full_gc_count, true /* full */)
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60 {
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61 }
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63 void VM_ParallelGCSystemGC::doit() {
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64 SvcGCMarker sgcm(SvcGCMarker::FULL);
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66 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
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67 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap,
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68 "must be a ParallelScavengeHeap");
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70 GCCauseSetter gccs(heap, _gc_cause);
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71 if (_gc_cause == GCCause::_gc_locker || _gc_cause == GCCause::_wb_young_gc
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72 DEBUG_ONLY(|| _gc_cause == GCCause::_scavenge_alot)) {
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73 // If (and only if) the scavenge fails, this will invoke a full gc.
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74 heap->invoke_scavenge();
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75 } else {
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76 heap->do_full_collection(false);
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77 }
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78 }