rev 7780 : imported patch 8072621
rev 7781 : imported patch 8066771
rev 7782 : [mq]: review

   1 /*
   2  * Copyright (c) 2007, 2015, 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/parallelScavenge/parallelScavengeHeap.inline.hpp"
  27 #include "gc_implementation/parallelScavenge/psMarkSweep.hpp"
  28 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
  29 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
  30 #include "gc_implementation/parallelScavenge/vmPSOperations.hpp"
  31 #include "memory/gcLocker.inline.hpp"
  32 #include "utilities/dtrace.hpp"
  33 
  34 // The following methods are used by the parallel scavenge collector
  35 VM_ParallelGCFailedAllocation::VM_ParallelGCFailedAllocation(size_t size,
  36                                                              uint gc_count) :
  37   VM_GC_Operation(gc_count, GCCause::_allocation_failure),
  38   _size(size),
  39   _result(NULL)
  40 {
  41 }
  42 
  43 void VM_ParallelGCFailedAllocation::doit() {
  44   SvcGCMarker sgcm(SvcGCMarker::MINOR);
  45 
  46   ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
  47   assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");
  48 
  49   GCCauseSetter gccs(heap, _gc_cause);
  50   _result = heap->failed_mem_allocate(_size);
  51 
  52   if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
  53     set_gc_locked();
  54   }
  55 }
  56 
  57 // Only used for System.gc() calls
  58 VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(uint gc_count,
  59                                              uint full_gc_count,
  60                                              GCCause::Cause gc_cause) :
  61   VM_GC_Operation(gc_count, gc_cause, full_gc_count, true /* full */)
  62 {
  63 }
  64 
  65 void VM_ParallelGCSystemGC::doit() {
  66   SvcGCMarker sgcm(SvcGCMarker::FULL);
  67 
  68   ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
  69   assert(heap->kind() == CollectedHeap::ParallelScavengeHeap,
  70     "must be a ParallelScavengeHeap");
  71 
  72   GCCauseSetter gccs(heap, _gc_cause);
  73   if (_gc_cause == GCCause::_gc_locker || _gc_cause == GCCause::_wb_young_gc
  74       DEBUG_ONLY(|| _gc_cause == GCCause::_scavenge_alot)) {
  75     // If (and only if) the scavenge fails, this will invoke a full gc.
  76     heap->invoke_scavenge();
  77   } else {
  78     heap->do_full_collection(false);
  79   }
  80 }
--- EOF ---