6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
/*
* Copyright 2001-2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
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// Inline functions of BarrierSet, which de-virtualize certain
// performance-critical calls when when the barrier is the most common
// card-table kind.
void BarrierSet::write_ref_field(void* field, oop new_val) {
if (kind() == CardTableModRef) {
((CardTableModRefBS*)this)->inline_write_ref_field(field, new_val);
} else {
write_ref_field_work(field, new_val);
}
}
void BarrierSet::write_ref_array(MemRegion mr) {
if (kind() == CardTableModRef) {
((CardTableModRefBS*)this)->inline_write_ref_array(mr);
} else {
write_ref_array_work(mr);
}
}
void BarrierSet::write_region(MemRegion mr) {
if (kind() == CardTableModRef) {
((CardTableModRefBS*)this)->inline_write_region(mr);
} else {
write_region_work(mr);
}
}