151 lines
5.0 KiB
C++
151 lines
5.0 KiB
C++
/*
|
|
* Copyright (c) 2001, 2007, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
#include "incls/_precompiled.incl"
|
|
#include "incls/_g1SATBCardTableModRefBS.cpp.incl"
|
|
|
|
G1SATBCardTableModRefBS::G1SATBCardTableModRefBS(MemRegion whole_heap,
|
|
int max_covered_regions) :
|
|
CardTableModRefBSForCTRS(whole_heap, max_covered_regions)
|
|
{
|
|
_kind = G1SATBCT;
|
|
}
|
|
|
|
|
|
void G1SATBCardTableModRefBS::enqueue(oop pre_val) {
|
|
assert(pre_val->is_oop_or_null(true), "Error");
|
|
if (!JavaThread::satb_mark_queue_set().is_active()) return;
|
|
Thread* thr = Thread::current();
|
|
if (thr->is_Java_thread()) {
|
|
JavaThread* jt = (JavaThread*)thr;
|
|
jt->satb_mark_queue().enqueue(pre_val);
|
|
} else {
|
|
MutexLocker x(Shared_SATB_Q_lock);
|
|
JavaThread::satb_mark_queue_set().shared_satb_queue()->enqueue(pre_val);
|
|
}
|
|
}
|
|
|
|
// When we know the current java thread:
|
|
template <class T> void
|
|
G1SATBCardTableModRefBS::write_ref_field_pre_static(T* field,
|
|
oop new_val,
|
|
JavaThread* jt) {
|
|
if (!JavaThread::satb_mark_queue_set().is_active()) return;
|
|
T heap_oop = oopDesc::load_heap_oop(field);
|
|
if (!oopDesc::is_null(heap_oop)) {
|
|
oop pre_val = oopDesc::decode_heap_oop_not_null(heap_oop);
|
|
assert(pre_val->is_oop(true /* ignore mark word */), "Error");
|
|
jt->satb_mark_queue().enqueue(pre_val);
|
|
}
|
|
}
|
|
|
|
template <class T> void
|
|
G1SATBCardTableModRefBS::write_ref_array_pre_work(T* dst, int count) {
|
|
if (!JavaThread::satb_mark_queue_set().is_active()) return;
|
|
T* elem_ptr = dst;
|
|
for (int i = 0; i < count; i++, elem_ptr++) {
|
|
T heap_oop = oopDesc::load_heap_oop(elem_ptr);
|
|
if (!oopDesc::is_null(heap_oop)) {
|
|
enqueue(oopDesc::decode_heap_oop_not_null(heap_oop));
|
|
}
|
|
}
|
|
}
|
|
|
|
G1SATBCardTableLoggingModRefBS::
|
|
G1SATBCardTableLoggingModRefBS(MemRegion whole_heap,
|
|
int max_covered_regions) :
|
|
G1SATBCardTableModRefBS(whole_heap, max_covered_regions),
|
|
_dcqs(JavaThread::dirty_card_queue_set())
|
|
{
|
|
_kind = G1SATBCTLogging;
|
|
}
|
|
|
|
void
|
|
G1SATBCardTableLoggingModRefBS::write_ref_field_work(void* field,
|
|
oop new_val) {
|
|
jbyte* byte = byte_for(field);
|
|
if (*byte != dirty_card) {
|
|
*byte = dirty_card;
|
|
Thread* thr = Thread::current();
|
|
if (thr->is_Java_thread()) {
|
|
JavaThread* jt = (JavaThread*)thr;
|
|
jt->dirty_card_queue().enqueue(byte);
|
|
} else {
|
|
MutexLockerEx x(Shared_DirtyCardQ_lock,
|
|
Mutex::_no_safepoint_check_flag);
|
|
_dcqs.shared_dirty_card_queue()->enqueue(byte);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
G1SATBCardTableLoggingModRefBS::write_ref_field_static(void* field,
|
|
oop new_val) {
|
|
uintptr_t field_uint = (uintptr_t)field;
|
|
uintptr_t new_val_uint = (uintptr_t)new_val;
|
|
uintptr_t comb = field_uint ^ new_val_uint;
|
|
comb = comb >> HeapRegion::LogOfHRGrainBytes;
|
|
if (comb == 0) return;
|
|
if (new_val == NULL) return;
|
|
// Otherwise, log it.
|
|
G1SATBCardTableLoggingModRefBS* g1_bs =
|
|
(G1SATBCardTableLoggingModRefBS*)Universe::heap()->barrier_set();
|
|
g1_bs->write_ref_field_work(field, new_val);
|
|
}
|
|
|
|
void
|
|
G1SATBCardTableLoggingModRefBS::invalidate(MemRegion mr, bool whole_heap) {
|
|
jbyte* byte = byte_for(mr.start());
|
|
jbyte* last_byte = byte_for(mr.last());
|
|
Thread* thr = Thread::current();
|
|
if (whole_heap) {
|
|
while (byte <= last_byte) {
|
|
*byte = dirty_card;
|
|
byte++;
|
|
}
|
|
} else {
|
|
// Enqueue if necessary.
|
|
if (thr->is_Java_thread()) {
|
|
JavaThread* jt = (JavaThread*)thr;
|
|
while (byte <= last_byte) {
|
|
if (*byte != dirty_card) {
|
|
*byte = dirty_card;
|
|
jt->dirty_card_queue().enqueue(byte);
|
|
}
|
|
byte++;
|
|
}
|
|
} else {
|
|
MutexLockerEx x(Shared_DirtyCardQ_lock,
|
|
Mutex::_no_safepoint_check_flag);
|
|
while (byte <= last_byte) {
|
|
if (*byte != dirty_card) {
|
|
*byte = dirty_card;
|
|
_dcqs.shared_dirty_card_queue()->enqueue(byte);
|
|
}
|
|
byte++;
|
|
}
|
|
}
|
|
}
|
|
}
|