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Java example source code file (oop.cpp)
The oop.cpp Java example source code/* * Copyright (c) 1997, 2013, 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" #include "oops/oop.inline.hpp" #include "runtime/handles.inline.hpp" #include "runtime/thread.inline.hpp" #include "utilities/copy.hpp" 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(jint 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; } } 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); } Other Java examples (source code examples)Here is a short list of links related to this Java oop.cpp source code file: |
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