Tue, 26 Jan 2010 16:52:29 -0800
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
Summary: G1 now answers "no" to the query can_elide_initializing_store_barrier() in the product build. A debug flag allows alternate behaviour in debug builds.
Reviewed-by: iveresov, tonyp
ysr@777 | 1 | /* |
xdono@1279 | 2 | * Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved. |
ysr@777 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
ysr@777 | 4 | * |
ysr@777 | 5 | * This code is free software; you can redistribute it and/or modify it |
ysr@777 | 6 | * under the terms of the GNU General Public License version 2 only, as |
ysr@777 | 7 | * published by the Free Software Foundation. |
ysr@777 | 8 | * |
ysr@777 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
ysr@777 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
ysr@777 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
ysr@777 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
ysr@777 | 13 | * accompanied this code). |
ysr@777 | 14 | * |
ysr@777 | 15 | * You should have received a copy of the GNU General Public License version |
ysr@777 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
ysr@777 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
ysr@777 | 18 | * |
ysr@777 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
ysr@777 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
ysr@777 | 21 | * have any questions. |
ysr@777 | 22 | * |
ysr@777 | 23 | */ |
ysr@777 | 24 | |
ysr@777 | 25 | #include "incls/_precompiled.incl" |
ysr@777 | 26 | #include "incls/_vm_operations_g1.cpp.incl" |
ysr@777 | 27 | |
ysr@777 | 28 | void VM_G1CollectForAllocation::doit() { |
ysr@777 | 29 | JvmtiGCForAllocationMarker jgcm; |
ysr@777 | 30 | G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
ysr@777 | 31 | _res = g1h->satisfy_failed_allocation(_size); |
ysr@777 | 32 | assert(g1h->is_in_or_null(_res), "result not in heap"); |
ysr@777 | 33 | } |
ysr@777 | 34 | |
ysr@777 | 35 | void VM_G1CollectFull::doit() { |
ysr@777 | 36 | JvmtiGCFullMarker jgcm; |
ysr@777 | 37 | G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
ysr@777 | 38 | GCCauseSetter x(g1h, _gc_cause); |
ysr@777 | 39 | g1h->do_full_collection(false /* clear_all_soft_refs */); |
ysr@777 | 40 | } |
ysr@777 | 41 | |
ysr@777 | 42 | void VM_G1IncCollectionPause::doit() { |
ysr@777 | 43 | JvmtiGCForAllocationMarker jgcm; |
ysr@777 | 44 | G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
ysr@1523 | 45 | GCCauseSetter x(g1h, _gc_cause); |
apetrusenko@1112 | 46 | g1h->do_collection_pause_at_safepoint(); |
ysr@777 | 47 | } |
ysr@777 | 48 | |
ysr@777 | 49 | void VM_CGC_Operation::doit() { |
ysr@777 | 50 | gclog_or_tty->date_stamp(PrintGC && PrintGCDateStamps); |
ysr@777 | 51 | TraceCPUTime tcpu(PrintGCDetails, true, gclog_or_tty); |
ysr@777 | 52 | TraceTime t(_printGCMessage, PrintGC, true, gclog_or_tty); |
ysr@777 | 53 | SharedHeap* sh = SharedHeap::heap(); |
ysr@777 | 54 | // This could go away if CollectedHeap gave access to _gc_is_active... |
ysr@777 | 55 | if (sh != NULL) { |
ysr@777 | 56 | IsGCActiveMark x; |
ysr@777 | 57 | _cl->do_void(); |
ysr@777 | 58 | } else { |
ysr@777 | 59 | _cl->do_void(); |
ysr@777 | 60 | } |
ysr@777 | 61 | } |
ysr@777 | 62 | |
ysr@777 | 63 | bool VM_CGC_Operation::doit_prologue() { |
ysr@777 | 64 | Heap_lock->lock(); |
ysr@777 | 65 | SharedHeap::heap()->_thread_holds_heap_lock_for_gc = true; |
ysr@777 | 66 | return true; |
ysr@777 | 67 | } |
ysr@777 | 68 | |
ysr@777 | 69 | void VM_CGC_Operation::doit_epilogue() { |
ysr@777 | 70 | SharedHeap::heap()->_thread_holds_heap_lock_for_gc = false; |
ysr@777 | 71 | Heap_lock->unlock(); |
ysr@777 | 72 | } |