Mercurial > hg > shenandoah-preopenjdk-archive > openjdk8 > hotspot
view src/share/vm/oops/oop.cpp @ 7435:b0eed0b189c3
Several smallish fixes. Most notably, don't apply evacuation closure on discovered field in refs. Added some useful asserts to check that no unmarked object gets assigned anywhere during evacuation.
author | Roman Kennke <rkennke@redhat.com> |
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date | Mon, 08 Dec 2014 17:40:13 +0100 |
parents | 78bbf4d43a14 |
children | 9e06c024409c |
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/* * Copyright (c) 1997, 2014, 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 "classfile/altHashing.hpp" #include "classfile/javaClasses.hpp" #ifdef ASSERT #include "gc_implementation/shenandoah/shenandoahHeap.hpp" #endif #include "oops/oop.inline.hpp" #include "runtime/handles.inline.hpp" #include "runtime/thread.inline.hpp" #include "utilities/copy.hpp" PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC bool always_do_update_barrier = false; BarrierSet* oopDesc::_bs = NULL; void oopDesc::print_on(outputStream* st) const { if (this == NULL) { st->print_cr("NULL"); } else { klass()->oop_print_on(oop(this), st); } } void oopDesc::print_address_on(outputStream* st) const { if (PrintOopAddress) { st->print("{"INTPTR_FORMAT"}", this); } } void oopDesc::print() { print_on(tty); } void oopDesc::print_address() { print_address_on(tty); } char* oopDesc::print_string() { stringStream st; print_on(&st); return st.as_string(); } void oopDesc::print_value() { print_value_on(tty); } char* oopDesc::print_value_string() { char buf[100]; stringStream st(buf, sizeof(buf)); print_value_on(&st); return st.as_string(); } void oopDesc::print_value_on(outputStream* st) const { oop obj = oop(this); if (this == NULL) { st->print("NULL"); } else if (java_lang_String::is_instance(obj)) { java_lang_String::print(obj, st); if (PrintOopAddress) print_address_on(st); } else { klass()->oop_print_value_on(obj, st); } } void oopDesc::verify_on(outputStream* st) { if (this != NULL) { klass()->oop_verify_on(this, st); } } void oopDesc::verify() { verify_on(tty); } intptr_t oopDesc::slow_identity_hash() { // slow case; we have to acquire the micro lock in order to locate the header ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY HandleMark hm; Handle object(this); return ObjectSynchronizer::identity_hash_value_for(object); } // When String table needs to rehash unsigned int oopDesc::new_hash(juint seed) { EXCEPTION_MARK; ResourceMark rm; int length; jchar* chars = java_lang_String::as_unicode_string(this, length, THREAD); if (chars != NULL) { // Use alternate hashing algorithm on the string return AltHashing::murmur3_32(seed, chars, length); } else { vm_exit_out_of_memory(length, OOM_MALLOC_ERROR, "unable to create Unicode strings for String table rehash"); return 0; } } #ifdef ASSERT void oopDesc::shenandoah_check_store_value(oop v) { if (UseShenandoahGC) { ShenandoahHeap* sh = ShenandoahHeap::heap(); if (sh->is_evacuation_in_progress()) { assert(v == NULL || sh->is_marked_current(v), "only store marked oops into fields or arrays"); } } } #endif VerifyOopClosure VerifyOopClosure::verify_oop; void VerifyOopClosure::do_oop(oop* p) { VerifyOopClosure::do_oop_work(p); } void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }