Fri, 20 Feb 2015 22:12:53 -0500
8069412: Locks need better debug-printing support
Summary: Added better debug-printing support and enhanced LogCompilation tool
Reviewed-by: kvn, roland, dholmes
duke@435 | 1 | /* |
drchase@7605 | 2 | * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "oops/markOop.hpp" |
stefank@4299 | 27 | #include "runtime/thread.inline.hpp" |
drchase@7605 | 28 | #include "runtime/objectMonitor.inline.hpp" |
duke@435 | 29 | |
drchase@6680 | 30 | PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
drchase@6680 | 31 | |
duke@435 | 32 | void markOopDesc::print_on(outputStream* st) const { |
drchase@7605 | 33 | if (is_marked()) { |
drchase@7605 | 34 | st->print(" marked(" INTPTR_FORMAT ")", value()); |
drchase@7605 | 35 | } else if (is_locked()) { |
drchase@7605 | 36 | st->print(" locked(" INTPTR_FORMAT ")->", value()); |
drchase@7605 | 37 | if (is_neutral()) { |
drchase@7605 | 38 | st->print("is_neutral"); |
drchase@7605 | 39 | if (has_no_hash()) st->print(" no_hash"); |
drchase@7605 | 40 | else st->print(" hash=" INTPTR_FORMAT, hash()); |
drchase@7605 | 41 | st->print(" age=%d", age()); |
drchase@7605 | 42 | } else if (has_bias_pattern()) { |
drchase@7605 | 43 | st->print("is_biased"); |
drchase@7605 | 44 | JavaThread* jt = biased_locker(); |
drchase@7605 | 45 | st->print(" biased_locker=" INTPTR_FORMAT, p2i(jt)); |
drchase@7605 | 46 | } else if (has_monitor()) { |
drchase@7605 | 47 | ObjectMonitor* mon = monitor(); |
drchase@7605 | 48 | if (mon == NULL) |
drchase@7605 | 49 | st->print("monitor=NULL"); |
drchase@7605 | 50 | else { |
drchase@7605 | 51 | BasicLock * bl = (BasicLock *) mon->owner(); |
drchase@7605 | 52 | st->print("monitor={count="INTPTR_FORMAT",waiters="INTPTR_FORMAT",recursions="INTPTR_FORMAT",owner="INTPTR_FORMAT"}", |
drchase@7605 | 53 | mon->count(), mon->waiters(), mon->recursions(), p2i(bl)); |
drchase@7605 | 54 | } |
drchase@7605 | 55 | } else { |
drchase@7605 | 56 | st->print("??"); |
drchase@7605 | 57 | } |
duke@435 | 58 | } else { |
jrose@1474 | 59 | assert(is_unlocked() || has_bias_pattern(), "just checking"); |
duke@435 | 60 | st->print("mark("); |
drchase@7605 | 61 | if (has_bias_pattern()) st->print("biased,"); |
duke@435 | 62 | st->print("hash %#lx,", hash()); |
duke@435 | 63 | st->print("age %d)", age()); |
duke@435 | 64 | } |
duke@435 | 65 | } |