Mercurial > hg > graal-jvmci-8
comparison src/share/vm/gc_implementation/shared/markSweep.inline.hpp @ 0:a61af66fc99e jdk7-b24
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| author | duke |
|---|---|
| date | Sat, 01 Dec 2007 00:00:00 +0000 |
| parents | |
| children | ba764ed4b6f2 |
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| -1:000000000000 | 0:a61af66fc99e |
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| 1 /* | |
| 2 * Copyright 2000-2006 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 */ | |
| 24 | |
| 25 inline void MarkSweep::_adjust_pointer(oop* p, bool isroot) { | |
| 26 oop obj = *p; | |
| 27 VALIDATE_MARK_SWEEP_ONLY(oop saved_new_pointer = NULL); | |
| 28 if (obj != NULL) { | |
| 29 oop new_pointer = oop(obj->mark()->decode_pointer()); | |
| 30 assert(new_pointer != NULL || // is forwarding ptr? | |
| 31 obj->mark() == markOopDesc::prototype() || // not gc marked? | |
| 32 (UseBiasedLocking && obj->mark()->has_bias_pattern()) || // not gc marked? | |
| 33 obj->is_shared(), // never forwarded? | |
| 34 "should contain a forwarding pointer"); | |
| 35 if (new_pointer != NULL) { | |
| 36 *p = new_pointer; | |
| 37 assert(Universe::heap()->is_in_reserved(new_pointer), | |
| 38 "should be in object space"); | |
| 39 VALIDATE_MARK_SWEEP_ONLY(saved_new_pointer = new_pointer); | |
| 40 } | |
| 41 } | |
| 42 VALIDATE_MARK_SWEEP_ONLY(track_adjusted_pointer(p, saved_new_pointer, isroot)); | |
| 43 } | |
| 44 | |
| 45 inline void MarkSweep::mark_object(oop obj) { | |
| 46 | |
| 47 #ifndef SERIALGC | |
| 48 if (UseParallelOldGC && VerifyParallelOldWithMarkSweep) { | |
| 49 assert(PSParallelCompact::mark_bitmap()->is_marked(obj), | |
| 50 "Should be marked in the marking bitmap"); | |
| 51 } | |
| 52 #endif // SERIALGC | |
| 53 | |
| 54 // some marks may contain information we need to preserve so we store them away | |
| 55 // and overwrite the mark. We'll restore it at the end of markSweep. | |
| 56 markOop mark = obj->mark(); | |
| 57 obj->set_mark(markOopDesc::prototype()->set_marked()); | |
| 58 | |
| 59 if (mark->must_be_preserved(obj)) { | |
| 60 preserve_mark(obj, mark); | |
| 61 } | |
| 62 } |