graal-compiler: src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp annotate

annotate src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp @ 845:df6caf649ff7

6700789: G1: Enable use of compressed oops with G1 heaps Summary: Modifications to G1 so as to allow the use of compressed oops. Reviewed-by: apetrusenko, coleenp, jmasa, kvn, never, phh, tonyp

author	ysr
date	Tue, 14 Jul 2009 15:40:39 -0700
parents	96b229c54d1e
children	18f526145aea

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2 * Copyright 2001-2007 Sun Microsystems, Inc. All Rights Reserved.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	4 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	7 * published by the Free Software Foundation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	8 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	13 * accompanied this code).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	14 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	18 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	20 * CA 95054 USA or visit www.sun.com if you need additional information or
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	21 * have any questions.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	22 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	23 */
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	24
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	25 inline size_t G1RemSet::n_workers() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	26 if (_g1->workers() != NULL) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	27 return _g1->workers()->total_workers();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	28 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	29 return 1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	30 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	31 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	32
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 677 diff changeset	33 template <class T> inline void HRInto_G1RemSet::write_ref_nv(HeapRegion* from, T* p) {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 677 diff changeset	34 par_write_ref_nv(from, p, 0);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	35 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	36
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	37 inline bool HRInto_G1RemSet::self_forwarded(oop obj) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	38 bool result = (obj->is_forwarded() && (obj->forwardee()== obj));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	39 return result;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	40 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	41
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 677 diff changeset	42 template <class T> inline void HRInto_G1RemSet::par_write_ref_nv(HeapRegion* from, T* p, int tid) {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 677 diff changeset	43 oop obj = oopDesc::load_decode_heap_oop(p);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	44 #ifdef ASSERT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	45 // can't do because of races
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	46 // assert(obj == NULL \|\| obj->is_oop(), "expected an oop");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	47
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	48 // Do the safe subset of is_oop
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	49 if (obj != NULL) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	50 #ifdef CHECK_UNHANDLED_OOPS
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	51 oopDesc* o = obj.obj();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	52 #else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	53 oopDesc* o = obj;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	54 #endif // CHECK_UNHANDLED_OOPS
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	55 assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	56 assert(Universe::heap()->is_in_reserved(obj), "must be in heap");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	57 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	58 #endif // ASSERT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	59 assert(from == NULL \|\| from->is_in_reserved(p),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	60 "p is not in from");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	61 HeapRegion* to = _g1->heap_region_containing(obj);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	62 // The test below could be optimized by applying a bit op to to and from.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	63 if (to != NULL && from != NULL && from != to) {
616 4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 342 diff changeset	64 // There is a tricky infinite loop if we keep pushing
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 342 diff changeset	65 // self forwarding pointers onto our _new_refs list.
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 342 diff changeset	66 // The _par_traversal_in_progress flag is true during the collection pause,
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 342 diff changeset	67 // false during the evacuation failure handing.
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 342 diff changeset	68 if (_par_traversal_in_progress &&
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 342 diff changeset	69 to->in_collection_set() && !self_forwarded(obj)) {
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 677 diff changeset	70 _new_refs[tid]->push((void*)p);
616 4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 342 diff changeset	71 // Deferred updates to the Cset are either discarded (in the normal case),
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 342 diff changeset	72 // or processed (if an evacuation failure occurs) at the end
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 342 diff changeset	73 // of the collection.
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 342 diff changeset	74 // See HRInto_G1RemSet::cleanup_after_oops_into_collection_set_do().
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 626 diff changeset	75 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	76 #if G1_REM_SET_LOGGING
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	77 gclog_or_tty->print_cr("Adding " PTR_FORMAT " (" PTR_FORMAT ") to RS"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	78 " for region [" PTR_FORMAT ", " PTR_FORMAT ")",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	79 p, obj,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	80 to->bottom(), to->end());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	81 #endif
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	82 assert(to->rem_set() != NULL, "Need per-region 'into' remsets.");
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 626 diff changeset	83 to->rem_set()->add_reference(p, tid);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	84 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	85 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	86 }
626 87fa6e083d82 6760309: G1: update remembered sets during Full GCs apetrusenko parents: 616 diff changeset	87
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 677 diff changeset	88 template <class T> inline void UpdateRSOopClosure::do_oop_work(T* p) {
626 87fa6e083d82 6760309: G1: update remembered sets during Full GCs apetrusenko parents: 616 diff changeset	89 assert(_from != NULL, "from region must be non-NULL");
87fa6e083d82 6760309: G1: update remembered sets during Full GCs apetrusenko parents: 616 diff changeset	90 _rs->par_write_ref(_from, p, _worker_i);
87fa6e083d82 6760309: G1: update remembered sets during Full GCs apetrusenko parents: 616 diff changeset	91 }

Mercurial > hg > graal-compiler

annotate src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp @ 845:df6caf649ff7