jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/vm_operations

6865703: G1: Parallelize hot card cache cleanup
Summary: Have the GC worker threads clear the hot card cache in parallel by having each worker thread claim a chunk of the card cache and process the cards in that chunk. The size of the chunks that each thread will claim is determined at VM initialization from the size of the card cache and the number of worker threads.
Reviewed-by: jmasa, tonyp

     1 /*

     2  * Copyright 2001-2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 #include "incls/_precompiled.incl"

    26 #include "incls/_vm_operations_g1.cpp.incl"

    28 void VM_G1CollectForAllocation::doit() {

    29   JvmtiGCForAllocationMarker jgcm;

    30   G1CollectedHeap* g1h = G1CollectedHeap::heap();

    31   _res = g1h->satisfy_failed_allocation(_size);

    32   assert(g1h->is_in_or_null(_res), "result not in heap");

    33 }

    35 void VM_G1CollectFull::doit() {

    36   JvmtiGCFullMarker jgcm;

    37   G1CollectedHeap* g1h = G1CollectedHeap::heap();

    38   GCCauseSetter x(g1h, _gc_cause);

    39   g1h->do_full_collection(false /* clear_all_soft_refs */);

    40 }

    42 void VM_G1IncCollectionPause::doit() {

    43   JvmtiGCForAllocationMarker jgcm;

    44   G1CollectedHeap* g1h = G1CollectedHeap::heap();

    45   GCCauseSetter x(g1h, GCCause::_g1_inc_collection_pause);

    46   g1h->do_collection_pause_at_safepoint();

    47 }

    49 void VM_CGC_Operation::doit() {

    50   gclog_or_tty->date_stamp(PrintGC && PrintGCDateStamps);

    51   TraceCPUTime tcpu(PrintGCDetails, true, gclog_or_tty);

    52   TraceTime t(_printGCMessage, PrintGC, true, gclog_or_tty);

    53   SharedHeap* sh = SharedHeap::heap();

    54   // This could go away if CollectedHeap gave access to _gc_is_active...

    55   if (sh != NULL) {

    56     IsGCActiveMark x;

    57     _cl->do_void();

    58   } else {

    59     _cl->do_void();

    60   }

    61 }

    63 bool VM_CGC_Operation::doit_prologue() {

    64   Heap_lock->lock();

    65   SharedHeap::heap()->_thread_holds_heap_lock_for_gc = true;

    66   return true;

    67 }

    69 void VM_CGC_Operation::doit_epilogue() {

    70   SharedHeap::heap()->_thread_holds_heap_lock_for_gc = false;

    71   Heap_lock->unlock();

    72 }

src/share/vm/gc_implementation/g1/vm_operations_g1.cpp@15c5903cf9e1

src/share/vm/gc_implementation/g1/vm_operations_g1.cpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/gc_implementation/g1/vm_operations_g1.cpp@15c5903cf9e1

src/share/vm/gc_implementation/g1/vm_operations_g1.cpp