Mercurial > hg > truffle
view src/cpu/zero/vm/javaFrameAnchor_zero.hpp @ 1139:b6f06e395428
6908267: Zero fails to unlock synchronized native methods on exception
Reviewed-by: never
Contributed-by: Gary Benson <gbenson@redhat.com>
author | never |
---|---|
date | Tue, 05 Jan 2010 11:14:54 -0800 |
parents | 354d3184f6b2 |
children | 0c5b3cf3c1f5 |
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/* * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. * Copyright 2007, 2008 Red Hat, Inc. * 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 * have any questions. * */ public: // Each arch must define reset, save, restore // These are used by objects that only care about: // 1 - initializing a new state (thread creation, javaCalls) // 2 - saving a current state (javaCalls) // 3 - restoring an old state (javaCalls) void clear() { // clearing _last_Java_sp must be first _last_Java_sp = NULL; // fence? _last_Java_pc = NULL; } void copy(JavaFrameAnchor* src) { // In order to make sure the transition state is valid for "this" // We must clear _last_Java_sp before copying the rest of the new // data // // Hack Alert: Temporary bugfix for 4717480/4721647 To act like // previous version (pd_cache_state) don't NULL _last_Java_sp // unless the value is changing // if (_last_Java_sp != src->_last_Java_sp) _last_Java_sp = NULL; _last_Java_pc = src->_last_Java_pc; // Must be last so profiler will always see valid frame if // has_last_frame() is true _last_Java_sp = src->_last_Java_sp; } bool walkable() { return true; } void make_walkable(JavaThread* thread) { // nothing to do } intptr_t* last_Java_sp() const { return _last_Java_sp; } void set_last_Java_sp(intptr_t* sp) { _last_Java_sp = sp; }