Mercurial > hg > truffle
view src/share/vm/oops/oopsHierarchy.cpp @ 2226:c5a923563727
6912621: iCMS: Error: assert(_markBitMap.isMarked(addr + 1),"Missing Printezis bit?")
Summary: Fix block_size_if_printezis_bits() so it does not expect the bits, only uses them when available. Fix block_size_no_stall() so it does not stall when the bits are missing such cases, letting the caller deal with zero size returns. Constant pool cache oops do not need to be unparsable or conc_unsafe after their klass pointer is installed. Some cosmetic clean-ups and some assertion checking for conc-usafety which, in the presence of class file redefinition, has no a-priori time boundedness, so all GCs must be able to safely deal with putatively conc-unsafe objects in a stop-world pause.
Reviewed-by: jmasa, johnc
author | ysr |
---|---|
date | Mon, 07 Feb 2011 22:19:57 -0800 |
parents | f95d63e2154a |
children | f08d439fab8c |
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/* * Copyright (c) 2005, 2010, 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 "precompiled.hpp" #include "gc_interface/collectedHeap.hpp" #include "gc_interface/collectedHeap.inline.hpp" #include "oops/oopsHierarchy.hpp" #include "runtime/thread.hpp" #include "utilities/globalDefinitions.hpp" #ifdef TARGET_OS_FAMILY_linux # include "thread_linux.inline.hpp" #endif #ifdef TARGET_OS_FAMILY_solaris # include "thread_solaris.inline.hpp" #endif #ifdef TARGET_OS_FAMILY_windows # include "thread_windows.inline.hpp" #endif #ifdef CHECK_UNHANDLED_OOPS void oop::register_oop() { assert (CheckUnhandledOops, "should only call when CheckUnhandledOops"); if (!Universe::is_fully_initialized()) return; // This gets expensive, which is why checking unhandled oops is on a switch. Thread* t = ThreadLocalStorage::thread(); if (t != NULL && t->is_Java_thread()) { frame fr = os::current_frame(); // This points to the oop creator, I guess current frame points to caller assert (fr.pc(), "should point to a vm frame"); t->unhandled_oops()->register_unhandled_oop(this, fr.pc()); } } void oop::unregister_oop() { assert (CheckUnhandledOops, "should only call when CheckUnhandledOops"); if (!Universe::is_fully_initialized()) return; // This gets expensive, which is why checking unhandled oops is on a switch. Thread* t = ThreadLocalStorage::thread(); if (t != NULL && t->is_Java_thread()) { t->unhandled_oops()->unregister_unhandled_oop(this); } } #endif // CHECK_UNHANDLED_OOPS