1 /*
   2  * Copyright (c) 2007, 2010, 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   bool is_tlab, unsigned int gc_count) :
  37   VM_GC_Operation(gc_count),
  38   _size(size),
  39   _is_tlab(is_tlab),
  40   _result(NULL)
  41 {
  42 }
  43 
  44 void VM_ParallelGCFailedAllocation::doit() {
  45   SvcGCMarker sgcm(SvcGCMarker::MINOR);
  46 
  47   ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
  48   assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");
  49 
  50   GCCauseSetter gccs(heap, _gc_cause);
  51   _result = heap->failed_mem_allocate(_size, _is_tlab);
  52 
  53   if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
  54     set_gc_locked();
  55   }
  56 }
  57 
  58 VM_ParallelGCFailedPermanentAllocation::VM_ParallelGCFailedPermanentAllocation(size_t size,
  59   unsigned int gc_count, unsigned int full_gc_count) :
  60   VM_GC_Operation(gc_count, full_gc_count, true /* full */),
  61   _size(size),
  62   _result(NULL)
  63 {
  64 }
  65 
  66 void VM_ParallelGCFailedPermanentAllocation::doit() {
  67   SvcGCMarker sgcm(SvcGCMarker::FULL);
  68 
  69   ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
  70   assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");
  71 
  72   GCCauseSetter gccs(heap, _gc_cause);
  73   _result = heap->failed_permanent_mem_allocate(_size);
  74   if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
  75     set_gc_locked();
  76   }
  77 }
  78 
  79 // Only used for System.gc() calls
  80 VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(unsigned int gc_count,
  81                                              unsigned int full_gc_count,
  82                                              GCCause::Cause gc_cause) :
  83   VM_GC_Operation(gc_count, full_gc_count, true /* full */)
  84 {
  85   _gc_cause = gc_cause;
  86 }
  87 
  88 void VM_ParallelGCSystemGC::doit() {
  89   SvcGCMarker sgcm(SvcGCMarker::FULL);
  90 
  91   ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
  92   assert(heap->kind() == CollectedHeap::ParallelScavengeHeap,
  93     "must be a ParallelScavengeHeap");
  94 
  95   GCCauseSetter gccs(heap, _gc_cause);
  96   if (_gc_cause == GCCause::_gc_locker
  97       DEBUG_ONLY(|| _gc_cause == GCCause::_scavenge_alot)) {
  98     // If (and only if) the scavenge fails, this will invoke a full gc.
  99     heap->invoke_scavenge();
 100   } else {
 101     heap->invoke_full_gc(false);
 102   }
 103 }