hotspot/src/share/vm/oops/instanceKlass.cpp
author twisti
Fri, 27 Feb 2009 13:27:09 -0800
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parent 1388 3677f5f3d66b
child 2332 5c7b6f4ce0a1
child 2264 55d0115a54fe
permissions -rw-r--r--
6810672: Comment typos Summary: I have collected some typos I have found while looking at the code. Reviewed-by: kvn, never
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/*
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 * Copyright 1997-2008 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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# include "incls/_precompiled.incl"
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# include "incls/_instanceKlass.cpp.incl"
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bool instanceKlass::should_be_initialized() const {
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  return !is_initialized();
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}
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klassVtable* instanceKlass::vtable() const {
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  return new klassVtable(as_klassOop(), start_of_vtable(), vtable_length() / vtableEntry::size());
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}
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klassItable* instanceKlass::itable() const {
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  return new klassItable(as_klassOop());
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}
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void instanceKlass::eager_initialize(Thread *thread) {
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  if (!EagerInitialization) return;
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  if (this->is_not_initialized()) {
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    // abort if the the class has a class initializer
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    if (this->class_initializer() != NULL) return;
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    // abort if it is java.lang.Object (initialization is handled in genesis)
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    klassOop super = this->super();
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    if (super == NULL) return;
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    // abort if the super class should be initialized
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    if (!instanceKlass::cast(super)->is_initialized()) return;
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    // call body to expose the this pointer
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    instanceKlassHandle this_oop(thread, this->as_klassOop());
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    eager_initialize_impl(this_oop);
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  }
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}
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void instanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) {
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  EXCEPTION_MARK;
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  ObjectLocker ol(this_oop, THREAD);
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  // abort if someone beat us to the initialization
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  if (!this_oop->is_not_initialized()) return;  // note: not equivalent to is_initialized()
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  ClassState old_state = this_oop->_init_state;
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  link_class_impl(this_oop, true, THREAD);
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  if (HAS_PENDING_EXCEPTION) {
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    CLEAR_PENDING_EXCEPTION;
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    // Abort if linking the class throws an exception.
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    // Use a test to avoid redundantly resetting the state if there's
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    // no change.  Set_init_state() asserts that state changes make
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    // progress, whereas here we might just be spinning in place.
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    if( old_state != this_oop->_init_state )
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      this_oop->set_init_state (old_state);
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  } else {
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    // linking successfull, mark class as initialized
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    this_oop->set_init_state (fully_initialized);
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    // trace
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    if (TraceClassInitialization) {
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      ResourceMark rm(THREAD);
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      tty->print_cr("[Initialized %s without side effects]", this_oop->external_name());
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    }
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  }
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}
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// See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization
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// process. The step comments refers to the procedure described in that section.
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// Note: implementation moved to static method to expose the this pointer.
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void instanceKlass::initialize(TRAPS) {
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  if (this->should_be_initialized()) {
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    HandleMark hm(THREAD);
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    instanceKlassHandle this_oop(THREAD, this->as_klassOop());
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    initialize_impl(this_oop, CHECK);
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    // Note: at this point the class may be initialized
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    //       OR it may be in the state of being initialized
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    //       in case of recursive initialization!
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  } else {
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    assert(is_initialized(), "sanity check");
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  }
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}
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bool instanceKlass::verify_code(
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    instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) {
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  // 1) Verify the bytecodes
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  Verifier::Mode mode =
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    throw_verifyerror ? Verifier::ThrowException : Verifier::NoException;
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  return Verifier::verify(this_oop, mode, CHECK_false);
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}
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// Used exclusively by the shared spaces dump mechanism to prevent
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// classes mapped into the shared regions in new VMs from appearing linked.
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void instanceKlass::unlink_class() {
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  assert(is_linked(), "must be linked");
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  _init_state = loaded;
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}
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void instanceKlass::link_class(TRAPS) {
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  assert(is_loaded(), "must be loaded");
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  if (!is_linked()) {
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    instanceKlassHandle this_oop(THREAD, this->as_klassOop());
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    link_class_impl(this_oop, true, CHECK);
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  }
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}
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// Called to verify that a class can link during initialization, without
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// throwing a VerifyError.
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bool instanceKlass::link_class_or_fail(TRAPS) {
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  assert(is_loaded(), "must be loaded");
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  if (!is_linked()) {
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    instanceKlassHandle this_oop(THREAD, this->as_klassOop());
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    link_class_impl(this_oop, false, CHECK_false);
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  }
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  return is_linked();
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}
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bool instanceKlass::link_class_impl(
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    instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) {
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  // check for error state
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  if (this_oop->is_in_error_state()) {
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    ResourceMark rm(THREAD);
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    THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(),
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               this_oop->external_name(), false);
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  }
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  // return if already verified
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  if (this_oop->is_linked()) {
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    return true;
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  }
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  // Timing
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  // timer handles recursion
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  assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl");
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  JavaThread* jt = (JavaThread*)THREAD;
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  PerfTraceTimedEvent vmtimer(ClassLoader::perf_class_link_time(),
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                        ClassLoader::perf_classes_linked(),
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                        jt->get_thread_stat()->class_link_recursion_count_addr());
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  // link super class before linking this class
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  instanceKlassHandle super(THREAD, this_oop->super());
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  if (super.not_null()) {
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    if (super->is_interface()) {  // check if super class is an interface
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      ResourceMark rm(THREAD);
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      Exceptions::fthrow(
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        THREAD_AND_LOCATION,
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        vmSymbolHandles::java_lang_IncompatibleClassChangeError(),
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        "class %s has interface %s as super class",
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        this_oop->external_name(),
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        super->external_name()
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      );
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      return false;
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    }
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    link_class_impl(super, throw_verifyerror, CHECK_false);
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  }
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  // link all interfaces implemented by this class before linking this class
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  objArrayHandle interfaces (THREAD, this_oop->local_interfaces());
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  int num_interfaces = interfaces->length();
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  for (int index = 0; index < num_interfaces; index++) {
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    HandleMark hm(THREAD);
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    instanceKlassHandle ih(THREAD, klassOop(interfaces->obj_at(index)));
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    link_class_impl(ih, throw_verifyerror, CHECK_false);
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  }
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  // in case the class is linked in the process of linking its superclasses
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  if (this_oop->is_linked()) {
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    return true;
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  }
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  // verification & rewriting
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  {
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    ObjectLocker ol(this_oop, THREAD);
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    // rewritten will have been set if loader constraint error found
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    // on an earlier link attempt
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    // don't verify or rewrite if already rewritten
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    if (!this_oop->is_linked()) {
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      if (!this_oop->is_rewritten()) {
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        {
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          assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl");
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          JavaThread* jt = (JavaThread*)THREAD;
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          // Timer includes any side effects of class verification (resolution,
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          // etc), but not recursive entry into verify_code().
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          PerfTraceTime timer(ClassLoader::perf_class_verify_time(),
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                            jt->get_thread_stat()->class_verify_recursion_count_addr());
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          bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD);
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          if (!verify_ok) {
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            return false;
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          }
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        }
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        // Just in case a side-effect of verify linked this class already
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        // (which can sometimes happen since the verifier loads classes
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        // using custom class loaders, which are free to initialize things)
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        if (this_oop->is_linked()) {
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          return true;
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        }
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        // also sets rewritten
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        this_oop->rewrite_class(CHECK_false);
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      }
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      // Initialize the vtable and interface table after
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      // methods have been rewritten since rewrite may
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      // fabricate new methodOops.
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      // also does loader constraint checking
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      if (!this_oop()->is_shared()) {
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        ResourceMark rm(THREAD);
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        this_oop->vtable()->initialize_vtable(true, CHECK_false);
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        this_oop->itable()->initialize_itable(true, CHECK_false);
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      }
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#ifdef ASSERT
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      else {
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        ResourceMark rm(THREAD);
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        this_oop->vtable()->verify(tty, true);
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        // In case itable verification is ever added.
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        // this_oop->itable()->verify(tty, true);
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      }
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#endif
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      this_oop->set_init_state(linked);
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   247
      if (JvmtiExport::should_post_class_prepare()) {
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        Thread *thread = THREAD;
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        assert(thread->is_Java_thread(), "thread->is_Java_thread()");
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        JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop());
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      }
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    }
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  }
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  return true;
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}
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   256
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// Rewrite the byte codes of all of the methods of a class.
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// Three cases:
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//    During the link of a newly loaded class.
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//    During the preloading of classes to be written to the shared spaces.
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//      - Rewrite the methods and update the method entry points.
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//
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//    During the link of a class in the shared spaces.
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//      - The methods were already rewritten, update the metho entry points.
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//
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// The rewriter must be called exactly once. Rewriting must happen after
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// verification but before the first method of the class is executed.
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void instanceKlass::rewrite_class(TRAPS) {
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  assert(is_loaded(), "must be loaded");
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  instanceKlassHandle this_oop(THREAD, this->as_klassOop());
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  if (this_oop->is_rewritten()) {
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    assert(this_oop()->is_shared(), "rewriting an unshared class?");
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    return;
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  }
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  Rewriter::rewrite(this_oop, CHECK); // No exception can happen here
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  this_oop->set_rewritten();
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}
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void instanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) {
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  // Make sure klass is linked (verified) before initialization
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  // A class could already be verified, since it has been reflected upon.
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  this_oop->link_class(CHECK);
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   286
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  // refer to the JVM book page 47 for description of steps
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  // Step 1
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  { ObjectLocker ol(this_oop, THREAD);
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    Thread *self = THREAD; // it's passed the current thread
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   292
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    // Step 2
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   294
    // If we were to use wait() instead of waitInterruptibly() then
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    // we might end up throwing IE from link/symbol resolution sites
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    // that aren't expected to throw.  This would wreak havoc.  See 6320309.
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    while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) {
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      ol.waitUninterruptibly(CHECK);
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    }
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    // Step 3
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    if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self))
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      return;
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   304
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    // Step 4
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   306
    if (this_oop->is_initialized())
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      return;
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   308
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   309
    // Step 5
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   310
    if (this_oop->is_in_error_state()) {
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      ResourceMark rm(THREAD);
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      const char* desc = "Could not initialize class ";
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      const char* className = this_oop->external_name();
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      size_t msglen = strlen(desc) + strlen(className) + 1;
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      char* message = NEW_C_HEAP_ARRAY(char, msglen);
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      if (NULL == message) {
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        // Out of memory: can't create detailed error message
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        THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className);
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   319
      } else {
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        jio_snprintf(message, msglen, "%s%s", desc, className);
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   321
        THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message);
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   322
      }
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   323
    }
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   324
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    // Step 6
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   326
    this_oop->set_init_state(being_initialized);
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   327
    this_oop->set_init_thread(self);
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   328
  }
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   329
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   330
  // Step 7
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   331
  klassOop super_klass = this_oop->super();
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  if (super_klass != NULL && !this_oop->is_interface() && Klass::cast(super_klass)->should_be_initialized()) {
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   333
    Klass::cast(super_klass)->initialize(THREAD);
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   334
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   335
    if (HAS_PENDING_EXCEPTION) {
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   336
      Handle e(THREAD, PENDING_EXCEPTION);
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      CLEAR_PENDING_EXCEPTION;
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   338
      {
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   339
        EXCEPTION_MARK;
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   340
        this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads
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   341
        CLEAR_PENDING_EXCEPTION;   // ignore any exception thrown, superclass initialization error is thrown below
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   342
      }
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   343
      THROW_OOP(e());
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   344
    }
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   345
  }
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   346
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  // Step 8
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   348
  {
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   349
    assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl");
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   350
    JavaThread* jt = (JavaThread*)THREAD;
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   351
    // Timer includes any side effects of class initialization (resolution,
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   352
    // etc), but not recursive entry into call_class_initializer().
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   353
    PerfTraceTimedEvent timer(ClassLoader::perf_class_init_time(),
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   354
                              ClassLoader::perf_classes_inited(),
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   355
                              jt->get_thread_stat()->class_init_recursion_count_addr());
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   356
    this_oop->call_class_initializer(THREAD);
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   357
  }
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   358
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   359
  // Step 9
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   360
  if (!HAS_PENDING_EXCEPTION) {
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   361
    this_oop->set_initialization_state_and_notify(fully_initialized, CHECK);
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   362
    { ResourceMark rm(THREAD);
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   363
      debug_only(this_oop->vtable()->verify(tty, true);)
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   364
    }
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   365
  }
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   366
  else {
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   367
    // Step 10 and 11
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   368
    Handle e(THREAD, PENDING_EXCEPTION);
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   369
    CLEAR_PENDING_EXCEPTION;
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   370
    {
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   371
      EXCEPTION_MARK;
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   372
      this_oop->set_initialization_state_and_notify(initialization_error, THREAD);
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   373
      CLEAR_PENDING_EXCEPTION;   // ignore any exception thrown, class initialization error is thrown below
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   374
    }
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   375
    if (e->is_a(SystemDictionary::error_klass())) {
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   376
      THROW_OOP(e());
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   377
    } else {
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   378
      JavaCallArguments args(e);
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   379
      THROW_ARG(vmSymbolHandles::java_lang_ExceptionInInitializerError(),
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   380
                vmSymbolHandles::throwable_void_signature(),
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   381
                &args);
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   382
    }
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   383
  }
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   384
}
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   385
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   386
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   387
// Note: implementation moved to static method to expose the this pointer.
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   388
void instanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) {
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   389
  instanceKlassHandle kh(THREAD, this->as_klassOop());
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   390
  set_initialization_state_and_notify_impl(kh, state, CHECK);
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   391
}
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   392
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   393
void instanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) {
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   394
  ObjectLocker ol(this_oop, THREAD);
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   395
  this_oop->set_init_state(state);
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   396
  ol.notify_all(CHECK);
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   397
}
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   398
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   399
void instanceKlass::add_implementor(klassOop k) {
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   400
  assert(Compile_lock->owned_by_self(), "");
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   401
  // Filter out my subinterfaces.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
  // (Note: Interfaces are never on the subklass list.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
  if (instanceKlass::cast(k)->is_interface()) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
  // Filter out subclasses whose supers already implement me.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
  // (Note: CHA must walk subclasses of direct implementors
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
  // in order to locate indirect implementors.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
  klassOop sk = instanceKlass::cast(k)->super();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
  if (sk != NULL && instanceKlass::cast(sk)->implements_interface(as_klassOop()))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
    // We only need to check one immediate superclass, since the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
    // implements_interface query looks at transitive_interfaces.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
    // Any supers of the super have the same (or fewer) transitive_interfaces.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
  // Update number of implementors
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
  int i = _nof_implementors++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
  // Record this implementor, if there are not too many already
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
  if (i < implementors_limit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
    assert(_implementors[i] == NULL, "should be exactly one implementor");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
    oop_store_without_check((oop*)&_implementors[i], k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
  } else if (i == implementors_limit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
    // clear out the list on first overflow
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
    for (int i2 = 0; i2 < implementors_limit; i2++)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
      oop_store_without_check((oop*)&_implementors[i2], NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
  // The implementor also implements the transitive_interfaces
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
  for (int index = 0; index < local_interfaces()->length(); index++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
    instanceKlass::cast(klassOop(local_interfaces()->obj_at(index)))->add_implementor(k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
void instanceKlass::init_implementor() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
  for (int i = 0; i < implementors_limit; i++)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
    oop_store_without_check((oop*)&_implementors[i], NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
  _nof_implementors = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
void instanceKlass::process_interfaces(Thread *thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
  // link this class into the implementors list of every interface it implements
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
  KlassHandle this_as_oop (thread, this->as_klassOop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
  for (int i = local_interfaces()->length() - 1; i >= 0; i--) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
    assert(local_interfaces()->obj_at(i)->is_klass(), "must be a klass");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
    instanceKlass* interf = instanceKlass::cast(klassOop(local_interfaces()->obj_at(i)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
    assert(interf->is_interface(), "expected interface");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
    interf->add_implementor(this_as_oop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
bool instanceKlass::can_be_primary_super_slow() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
  if (is_interface())
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
    return Klass::can_be_primary_super_slow();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
objArrayOop instanceKlass::compute_secondary_supers(int num_extra_slots, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
  // The secondaries are the implemented interfaces.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
  instanceKlass* ik = instanceKlass::cast(as_klassOop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
  objArrayHandle interfaces (THREAD, ik->transitive_interfaces());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
  int num_secondaries = num_extra_slots + interfaces->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
  if (num_secondaries == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
    return Universe::the_empty_system_obj_array();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
  } else if (num_extra_slots == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
    return interfaces();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
    // a mix of both
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
    objArrayOop secondaries = oopFactory::new_system_objArray(num_secondaries, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
    for (int i = 0; i < interfaces->length(); i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
      secondaries->obj_at_put(num_extra_slots+i, interfaces->obj_at(i));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
    return secondaries;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
bool instanceKlass::compute_is_subtype_of(klassOop k) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
  if (Klass::cast(k)->is_interface()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
    return implements_interface(k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
    return Klass::compute_is_subtype_of(k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
bool instanceKlass::implements_interface(klassOop k) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
  if (as_klassOop() == k) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
  assert(Klass::cast(k)->is_interface(), "should be an interface class");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
  for (int i = 0; i < transitive_interfaces()->length(); i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
    if (transitive_interfaces()->obj_at(i) == k) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
objArrayOop instanceKlass::allocate_objArray(int n, int length, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
  if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
  if (length > arrayOopDesc::max_array_length(T_OBJECT)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
    THROW_OOP_0(Universe::out_of_memory_error_array_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
  int size = objArrayOopDesc::object_size(length);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
  klassOop ak = array_klass(n, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
  KlassHandle h_ak (THREAD, ak);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
  objArrayOop o =
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
    (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
  return o;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
instanceOop instanceKlass::register_finalizer(instanceOop i, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
  if (TraceFinalizerRegistration) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
    tty->print("Registered ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
    i->print_value_on(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
    tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
  instanceHandle h_i(THREAD, i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
  // Pass the handle as argument, JavaCalls::call expects oop as jobjects
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
  JavaValue result(T_VOID);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
  JavaCallArguments args(h_i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
  methodHandle mh (THREAD, Universe::finalizer_register_method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
  JavaCalls::call(&result, mh, &args, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
  return h_i();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
instanceOop instanceKlass::allocate_instance(TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
  bool has_finalizer_flag = has_finalizer(); // Query before possible GC
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
  int size = size_helper();  // Query before forming handle.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
  KlassHandle h_k(THREAD, as_klassOop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
  instanceOop i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
  i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
  if (has_finalizer_flag && !RegisterFinalizersAtInit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
    i = register_finalizer(i, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
  return i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
instanceOop instanceKlass::allocate_permanent_instance(TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
  // Finalizer registration occurs in the Object.<init> constructor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
  // and constructors normally aren't run when allocating perm
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
  // instances so simply disallow finalizable perm objects.  This can
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
  // be relaxed if a need for it is found.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
  assert(!has_finalizer(), "perm objects not allowed to have finalizers");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
  int size = size_helper();  // Query before forming handle.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
  KlassHandle h_k(THREAD, as_klassOop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
  instanceOop i = (instanceOop)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
    CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
  return i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
void instanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
  if (is_interface() || is_abstract()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
    ResourceMark rm(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
    THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
              : vmSymbols::java_lang_InstantiationException(), external_name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
  if (as_klassOop() == SystemDictionary::class_klass()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
    ResourceMark rm(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
    THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
              : vmSymbols::java_lang_IllegalAccessException(), external_name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
klassOop instanceKlass::array_klass_impl(bool or_null, int n, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
  instanceKlassHandle this_oop(THREAD, as_klassOop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
  return array_klass_impl(this_oop, or_null, n, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
klassOop instanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
  if (this_oop->array_klasses() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
    if (or_null) return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
    ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
    JavaThread *jt = (JavaThread *)THREAD;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
      // Atomic creation of array_klasses
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
      MutexLocker mc(Compile_lock, THREAD);   // for vtables
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
      MutexLocker ma(MultiArray_lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
      // Check if update has already taken place
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
      if (this_oop->array_klasses() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
        objArrayKlassKlass* oakk =
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
          (objArrayKlassKlass*)Universe::objArrayKlassKlassObj()->klass_part();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
        klassOop  k = oakk->allocate_objArray_klass(1, this_oop, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
        this_oop->set_array_klasses(k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
  // _this will always be set at this point
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
  objArrayKlass* oak = (objArrayKlass*)this_oop->array_klasses()->klass_part();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
  if (or_null) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
    return oak->array_klass_or_null(n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
  return oak->array_klass(n, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
klassOop instanceKlass::array_klass_impl(bool or_null, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
  return array_klass_impl(or_null, 1, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
void instanceKlass::call_class_initializer(TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
  instanceKlassHandle ik (THREAD, as_klassOop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
  call_class_initializer_impl(ik, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
static int call_class_initializer_impl_counter = 0;   // for debugging
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
methodOop instanceKlass::class_initializer() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
  return find_method(vmSymbols::class_initializer_name(), vmSymbols::void_method_signature());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
void instanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
  methodHandle h_method(THREAD, this_oop->class_initializer());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
  assert(!this_oop->is_initialized(), "we cannot initialize twice");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
  if (TraceClassInitialization) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
    tty->print("%d Initializing ", call_class_initializer_impl_counter++);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
    this_oop->name()->print_value();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
    tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
  if (h_method() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
    JavaCallArguments args; // No arguments
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
    JavaValue result(T_VOID);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
    JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
void instanceKlass::mask_for(methodHandle method, int bci,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
  InterpreterOopMap* entry_for) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
  // Dirty read, then double-check under a lock.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
  if (_oop_map_cache == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
    // Otherwise, allocate a new one.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
    MutexLocker x(OopMapCacheAlloc_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
    // First time use. Allocate a cache in C heap
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
    if (_oop_map_cache == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
      _oop_map_cache = new OopMapCache();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
  // _oop_map_cache is constant after init; lookup below does is own locking.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
  _oop_map_cache->lookup(method, bci, entry_for);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
bool instanceKlass::find_local_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
  const int n = fields()->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
  for (int i = 0; i < n; i += next_offset ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
    int name_index = fields()->ushort_at(i + name_index_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
    int sig_index  = fields()->ushort_at(i + signature_index_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
    symbolOop f_name = constants()->symbol_at(name_index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
    symbolOop f_sig  = constants()->symbol_at(sig_index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
    if (f_name == name && f_sig == sig) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
      fd->initialize(as_klassOop(), i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
void instanceKlass::field_names_and_sigs_iterate(OopClosure* closure) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
  const int n = fields()->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
  for (int i = 0; i < n; i += next_offset ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
    int name_index = fields()->ushort_at(i + name_index_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
    symbolOop name = constants()->symbol_at(name_index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
    closure->do_oop((oop*)&name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
    int sig_index  = fields()->ushort_at(i + signature_index_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
    symbolOop sig = constants()->symbol_at(sig_index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
    closure->do_oop((oop*)&sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
klassOop instanceKlass::find_interface_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
  const int n = local_interfaces()->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
  for (int i = 0; i < n; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
    klassOop intf1 = klassOop(local_interfaces()->obj_at(i));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
    assert(Klass::cast(intf1)->is_interface(), "just checking type");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
    // search for field in current interface
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
    if (instanceKlass::cast(intf1)->find_local_field(name, sig, fd)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
      assert(fd->is_static(), "interface field must be static");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
      return intf1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
    // search for field in direct superinterfaces
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
    klassOop intf2 = instanceKlass::cast(intf1)->find_interface_field(name, sig, fd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
    if (intf2 != NULL) return intf2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
  // otherwise field lookup fails
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
klassOop instanceKlass::find_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
  // search order according to newest JVM spec (5.4.3.2, p.167).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
  // 1) search for field in current klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
  if (find_local_field(name, sig, fd)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
    return as_klassOop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
  // 2) search for field recursively in direct superinterfaces
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
  { klassOop intf = find_interface_field(name, sig, fd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
    if (intf != NULL) return intf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
  // 3) apply field lookup recursively if superclass exists
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
  { klassOop supr = super();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
    if (supr != NULL) return instanceKlass::cast(supr)->find_field(name, sig, fd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
  // 4) otherwise field lookup fails
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
klassOop instanceKlass::find_field(symbolOop name, symbolOop sig, bool is_static, fieldDescriptor* fd) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
  // search order according to newest JVM spec (5.4.3.2, p.167).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
  // 1) search for field in current klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
  if (find_local_field(name, sig, fd)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
    if (fd->is_static() == is_static) return as_klassOop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
  // 2) search for field recursively in direct superinterfaces
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
  if (is_static) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
    klassOop intf = find_interface_field(name, sig, fd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
    if (intf != NULL) return intf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
  // 3) apply field lookup recursively if superclass exists
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
  { klassOop supr = super();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
    if (supr != NULL) return instanceKlass::cast(supr)->find_field(name, sig, is_static, fd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
  // 4) otherwise field lookup fails
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
bool instanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
  int length = fields()->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
  for (int i = 0; i < length; i += next_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
    if (offset_from_fields( i ) == offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
      fd->initialize(as_klassOop(), i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
      if (fd->is_static() == is_static) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
bool instanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
  klassOop klass = as_klassOop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
  while (klass != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
    if (instanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
    klass = Klass::cast(klass)->super();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
void instanceKlass::methods_do(void f(methodOop method)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
  int len = methods()->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
  for (int index = 0; index < len; index++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
    methodOop m = methodOop(methods()->obj_at(index));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
    assert(m->is_method(), "must be method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
    f(m);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
void instanceKlass::do_local_static_fields(FieldClosure* cl) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
  fieldDescriptor fd;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
  int length = fields()->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
  for (int i = 0; i < length; i += next_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
    fd.initialize(as_klassOop(), i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
    if (fd.is_static()) cl->do_field(&fd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
void instanceKlass::do_local_static_fields(void f(fieldDescriptor*, TRAPS), TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
  instanceKlassHandle h_this(THREAD, as_klassOop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
  do_local_static_fields_impl(h_this, f, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
void instanceKlass::do_local_static_fields_impl(instanceKlassHandle this_oop, void f(fieldDescriptor* fd, TRAPS), TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
  fieldDescriptor fd;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
  int length = this_oop->fields()->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
  for (int i = 0; i < length; i += next_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
    fd.initialize(this_oop(), i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
    if (fd.is_static()) { f(&fd, CHECK); } // Do NOT remove {}! (CHECK macro expands into several statements)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
217
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   794
static int compare_fields_by_offset(int* a, int* b) {
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   795
  return a[0] - b[0];
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   796
}
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   797
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
void instanceKlass::do_nonstatic_fields(FieldClosure* cl) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
  instanceKlass* super = superklass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
  if (super != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
    super->do_nonstatic_fields(cl);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
  }
217
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   803
  fieldDescriptor fd;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
  int length = fields()->length();
217
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   805
  // In DebugInfo nonstatic fields are sorted by offset.
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   806
  int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1));
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   807
  int j = 0;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
  for (int i = 0; i < length; i += next_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
    fd.initialize(as_klassOop(), i);
217
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   810
    if (!fd.is_static()) {
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   811
      fields_sorted[j + 0] = fd.offset();
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   812
      fields_sorted[j + 1] = i;
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   813
      j += 2;
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   814
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
  }
217
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   816
  if (j > 0) {
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   817
    length = j;
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   818
    // _sort_Fn is defined in growableArray.hpp.
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   819
    qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset);
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   820
    for (int i = 0; i < length; i += 2) {
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   821
      fd.initialize(as_klassOop(), fields_sorted[i + 1]);
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   822
      assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields");
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   823
      cl->do_field(&fd);
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   824
    }
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   825
  }
c646ef2f5d58 6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents: 1
diff changeset
   826
  FREE_C_HEAP_ARRAY(int, fields_sorted);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
void instanceKlass::array_klasses_do(void f(klassOop k)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
  if (array_klasses() != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
    arrayKlass::cast(array_klasses())->array_klasses_do(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
void instanceKlass::with_array_klasses_do(void f(klassOop k)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
  f(as_klassOop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
  array_klasses_do(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
static int linear_search(objArrayOop methods, symbolOop name, symbolOop signature) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
  int len = methods->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
  for (int index = 0; index < len; index++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
    methodOop m = (methodOop)(methods->obj_at(index));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
    assert(m->is_method(), "must be method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
    if (m->signature() == signature && m->name() == name) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
       return index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
  return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
methodOop instanceKlass::find_method(symbolOop name, symbolOop signature) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
  return instanceKlass::find_method(methods(), name, signature);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
methodOop instanceKlass::find_method(objArrayOop methods, symbolOop name, symbolOop signature) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
  int len = methods->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
  // methods are sorted, so do binary search
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
  int l = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
  int h = len - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
  while (l <= h) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
    int mid = (l + h) >> 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
    methodOop m = (methodOop)methods->obj_at(mid);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
    assert(m->is_method(), "must be method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
    int res = m->name()->fast_compare(name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
    if (res == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
      // found matching name; do linear search to find matching signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
      // first, quick check for common case
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
      if (m->signature() == signature) return m;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
      // search downwards through overloaded methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
      int i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
      for (i = mid - 1; i >= l; i--) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
        methodOop m = (methodOop)methods->obj_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
        assert(m->is_method(), "must be method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
        if (m->name() != name) break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
        if (m->signature() == signature) return m;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
      // search upwards
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
      for (i = mid + 1; i <= h; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
        methodOop m = (methodOop)methods->obj_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
        assert(m->is_method(), "must be method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
        if (m->name() != name) break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
        if (m->signature() == signature) return m;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
      // not found
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
      int index = linear_search(methods, name, signature);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
      if (index != -1) fatal1("binary search bug: should have found entry %d", index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
      return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
    } else if (res < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
      l = mid + 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
      h = mid - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
  int index = linear_search(methods, name, signature);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
  if (index != -1) fatal1("binary search bug: should have found entry %d", index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
methodOop instanceKlass::uncached_lookup_method(symbolOop name, symbolOop signature) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
  klassOop klass = as_klassOop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
  while (klass != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
    methodOop method = instanceKlass::cast(klass)->find_method(name, signature);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
    if (method != NULL) return method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
    klass = instanceKlass::cast(klass)->super();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
// lookup a method in all the interfaces that this class implements
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
methodOop instanceKlass::lookup_method_in_all_interfaces(symbolOop name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
                                                         symbolOop signature) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
  objArrayOop all_ifs = instanceKlass::cast(as_klassOop())->transitive_interfaces();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
  int num_ifs = all_ifs->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
  instanceKlass *ik = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
  for (int i = 0; i < num_ifs; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
    ik = instanceKlass::cast(klassOop(all_ifs->obj_at(i)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
    methodOop m = ik->lookup_method(name, signature);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
    if (m != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
      return m;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
/* jni_id_for_impl for jfieldIds only */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
JNIid* instanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
  MutexLocker ml(JfieldIdCreation_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
  // Retry lookup after we got the lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
  JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
  if (probe == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
    // Slow case, allocate new static field identifier
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
    probe = new JNIid(this_oop->as_klassOop(), offset, this_oop->jni_ids());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
    this_oop->set_jni_ids(probe);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
  return probe;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
/* jni_id_for for jfieldIds only */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
JNIid* instanceKlass::jni_id_for(int offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
  JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
  if (probe == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
    probe = jni_id_for_impl(this->as_klassOop(), offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
  return probe;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
// Lookup or create a jmethodID.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
// This code can be called by the VM thread.  For this reason it is critical that
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
// there are no blocking operations (safepoints) while the lock is held -- or a
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
// deadlock can occur.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
jmethodID instanceKlass::jmethod_id_for_impl(instanceKlassHandle ik_h, methodHandle method_h) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
  size_t idnum = (size_t)method_h->method_idnum();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
  jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
  size_t length = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
  jmethodID id = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
  // array length stored in first element, other elements offset by one
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
  if (jmeths == NULL ||                         // If there is no jmethodID array,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
      (length = (size_t)jmeths[0]) <= idnum ||  // or if it is too short,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
      (id = jmeths[idnum+1]) == NULL) {         // or if this jmethodID isn't allocated
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
    // Do all the safepointing things (allocations) before grabbing the lock.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
    // These allocations will have to be freed if they are unused.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
    // Allocate a new array of methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
    jmethodID* new_jmeths = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
    if (length <= idnum) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
      // A new array will be needed (unless some other thread beats us to it)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
      size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
      new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
      memset(new_jmeths, 0, (size+1)*sizeof(jmethodID));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
      new_jmeths[0] =(jmethodID)size;  // array size held in the first element
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
    // Allocate a new method ID.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
    jmethodID new_id = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
    if (method_h->is_old() && !method_h->is_obsolete()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   987
      // The method passed in is old (but not obsolete), we need to use the current version
489c9b5090e2 Initial load
duke
parents:
diff changeset
   988
      methodOop current_method = ik_h->method_with_idnum((int)idnum);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
      assert(current_method != NULL, "old and but not obsolete, so should exist");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
      methodHandle current_method_h(current_method == NULL? method_h() : current_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
      new_id = JNIHandles::make_jmethod_id(current_method_h);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
      // It is the current version of the method or an obsolete method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
      // use the version passed in
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
      new_id = JNIHandles::make_jmethod_id(method_h);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
222
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
   998
    if (Threads::number_of_threads() == 0 || SafepointSynchronize::is_at_safepoint()) {
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
   999
      // No need and unsafe to lock the JmethodIdCreation_lock at safepoint.
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1000
      id = get_jmethod_id(ik_h, idnum, new_id, new_jmeths);
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1001
    } else {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
      MutexLocker ml(JmethodIdCreation_lock);
222
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1003
      id = get_jmethod_id(ik_h, idnum, new_id, new_jmeths);
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1004
    }
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1005
  }
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1006
  return id;
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1007
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
222
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1009
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1010
jmethodID instanceKlass::get_jmethod_id(instanceKlassHandle ik_h, size_t idnum,
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1011
                                        jmethodID new_id, jmethodID* new_jmeths) {
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1012
  // Retry lookup after we got the lock or ensured we are at safepoint
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1013
  jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire();
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1014
  jmethodID  id                = NULL;
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1015
  jmethodID  to_dealloc_id     = NULL;
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1016
  jmethodID* to_dealloc_jmeths = NULL;
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1017
  size_t     length;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
222
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1019
  if (jmeths == NULL || (length = (size_t)jmeths[0]) <= idnum) {
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1020
    if (jmeths != NULL) {
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1021
      // We have grown the array: copy the existing entries, and delete the old array
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1022
      for (size_t index = 0; index < length; index++) {
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1023
        new_jmeths[index+1] = jmeths[index+1];
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
      }
222
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1025
      to_dealloc_jmeths = jmeths; // using the new jmeths, deallocate the old one
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
    }
222
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1027
    ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths);
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1028
  } else {
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1029
    id = jmeths[idnum+1];
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1030
    to_dealloc_jmeths = new_jmeths; // using the old jmeths, deallocate the new one
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1031
  }
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1032
  if (id == NULL) {
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1033
    id = new_id;
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1034
    jmeths[idnum+1] = id;  // install the new method ID
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1035
  } else {
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1036
    to_dealloc_id = new_id; // the new id wasn't used, mark it for deallocation
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1037
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
222
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1039
  // Free up unneeded or no longer needed resources
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1040
  FreeHeap(to_dealloc_jmeths);
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1041
  if (to_dealloc_id != NULL) {
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 220
diff changeset
  1042
    JNIHandles::destroy_jmethod_id(to_dealloc_id);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
  return id;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1046
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1047
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
// Lookup a jmethodID, NULL if not found.  Do no blocking, no allocations, no handles
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
jmethodID instanceKlass::jmethod_id_or_null(methodOop method) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1050
  size_t idnum = (size_t)method->method_idnum();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1051
  jmethodID* jmeths = methods_jmethod_ids_acquire();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1052
  size_t length;                                // length assigned as debugging crumb
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1053
  jmethodID id = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1054
  if (jmeths != NULL &&                         // If there is a jmethodID array,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1055
      (length = (size_t)jmeths[0]) > idnum) {   // and if it is long enough,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1056
    id = jmeths[idnum+1];                       // Look up the id (may be NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1057
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1058
  return id;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1059
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1060
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1061
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1062
// Cache an itable index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
void instanceKlass::set_cached_itable_index(size_t idnum, int index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
  int* indices = methods_cached_itable_indices_acquire();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
  if (indices == NULL ||                         // If there is no index array,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
      ((size_t)indices[0]) <= idnum) {           // or if it is too short
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
    // Lock before we allocate the array so we don't leak
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
    MutexLocker ml(JNICachedItableIndex_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
    // Retry lookup after we got the lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
    indices = methods_cached_itable_indices_acquire();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
    size_t length = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1072
    // array length stored in first element, other elements offset by one
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1073
    if (indices == NULL || (length = (size_t)indices[0]) <= idnum) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
      size_t size = MAX2(idnum+1, (size_t)idnum_allocated_count());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
      int* new_indices = NEW_C_HEAP_ARRAY(int, size+1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
      // Copy the existing entries, if any
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
      size_t i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
      for (i = 0; i < length; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
        new_indices[i+1] = indices[i+1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
      // Set all the rest to -1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
      for (i = length; i < size; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
        new_indices[i+1] = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
      if (indices != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
        FreeHeap(indices);  // delete any old indices
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
      release_set_methods_cached_itable_indices(indices = new_indices);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1090
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
    CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1092
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
  // This is a cache, if there is a race to set it, it doesn't matter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
  indices[idnum+1] = index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
// Retrieve a cached itable index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
int instanceKlass::cached_itable_index(size_t idnum) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1100
  int* indices = methods_cached_itable_indices_acquire();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1101
  if (indices != NULL && ((size_t)indices[0]) > idnum) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
     // indices exist and are long enough, retrieve possible cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1103
    return indices[idnum+1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1104
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1105
  return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1106
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
// nmethodBucket is used to record dependent nmethods for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
// deoptimization.  nmethod dependencies are actually <klass, method>
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
// pairs but we really only care about the klass part for purposes of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
// finding nmethods which might need to be deoptimized.  Instead of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
// recording the method, a count of how many times a particular nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
// was recorded is kept.  This ensures that any recording errors are
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
// noticed since an nmethod should be removed as many times are it's
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
// added.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
class nmethodBucket {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
  nmethod*       _nmethod;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
  int            _count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
  nmethodBucket* _next;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
  nmethodBucket(nmethod* nmethod, nmethodBucket* next) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1127
    _nmethod = nmethod;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1128
    _next = next;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
    _count = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1130
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
  int count()                             { return _count; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
  int increment()                         { _count += 1; return _count; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1133
  int decrement()                         { _count -= 1; assert(_count >= 0, "don't underflow"); return _count; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1134
  nmethodBucket* next()                   { return _next; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
  void set_next(nmethodBucket* b)         { _next = b; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
  nmethod* get_nmethod()                  { return _nmethod; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1138
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1139
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1141
// Walk the list of dependent nmethods searching for nmethods which
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1142
// are dependent on the klassOop that was passed in and mark them for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
// deoptimization.  Returns the number of nmethods found.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
int instanceKlass::mark_dependent_nmethods(DepChange& changes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1146
  assert_locked_or_safepoint(CodeCache_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1147
  int found = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
  nmethodBucket* b = _dependencies;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
  while (b != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
    nmethod* nm = b->get_nmethod();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
    // since dependencies aren't removed until an nmethod becomes a zombie,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
    // the dependency list may contain nmethods which aren't alive.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
    if (nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1154
      if (TraceDependencies) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1155
        ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
        tty->print_cr("Marked for deoptimization");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
        tty->print_cr("  context = %s", this->external_name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
        changes.print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
        nm->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1160
        nm->print_dependencies();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
      nm->mark_for_deoptimization();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
      found++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1165
    b = b->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1166
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
  return found;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
// Add an nmethodBucket to the list of dependencies for this nmethod.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1173
// It's possible that an nmethod has multiple dependencies on this klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
// so a count is kept for each bucket to guarantee that creation and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1175
// deletion of dependencies is consistent.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1176
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1177
void instanceKlass::add_dependent_nmethod(nmethod* nm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
  assert_locked_or_safepoint(CodeCache_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
  nmethodBucket* b = _dependencies;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
  nmethodBucket* last = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
  while (b != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
    if (nm == b->get_nmethod()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
      b->increment();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
    b = b->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1188
  _dependencies = new nmethodBucket(nm, _dependencies);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1191
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1192
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1193
// Decrement count of the nmethod in the dependency list and remove
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1194
// the bucket competely when the count goes to 0.  This method must
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
// find a corresponding bucket otherwise there's a bug in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
// recording of dependecies.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1197
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1198
void instanceKlass::remove_dependent_nmethod(nmethod* nm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1199
  assert_locked_or_safepoint(CodeCache_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1200
  nmethodBucket* b = _dependencies;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
  nmethodBucket* last = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
  while (b != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
    if (nm == b->get_nmethod()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1204
      if (b->decrement() == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
        if (last == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
          _dependencies = b->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1208
          last->set_next(b->next());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
        delete b;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1211
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
    last = b;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1215
    b = b->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1217
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1218
  tty->print_cr("### %s can't find dependent nmethod:", this->external_name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1219
  nm->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
#endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1221
  ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1223
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1224
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1226
void instanceKlass::print_dependent_nmethods(bool verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1227
  nmethodBucket* b = _dependencies;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1228
  int idx = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1229
  while (b != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
    nmethod* nm = b->get_nmethod();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
    tty->print("[%d] count=%d { ", idx++, b->count());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
    if (!verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1233
      nm->print_on(tty, "nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
      tty->print_cr(" } ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
      nm->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1237
      nm->print_dependencies();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
      tty->print_cr("--- } ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
    b = b->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1241
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1242
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1243
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1244
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1245
bool instanceKlass::is_dependent_nmethod(nmethod* nm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1246
  nmethodBucket* b = _dependencies;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1247
  while (b != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1248
    if (nm == b->get_nmethod()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1249
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1250
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1251
    b = b->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1252
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1253
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1254
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1255
#endif //PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1256
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1257
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1258
#ifdef ASSERT
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1259
template <class T> void assert_is_in(T *p) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1260
  T heap_oop = oopDesc::load_heap_oop(p);
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1261
  if (!oopDesc::is_null(heap_oop)) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1262
    oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1263
    assert(Universe::heap()->is_in(o), "should be in heap");
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1264
  }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1265
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1266
template <class T> void assert_is_in_closed_subset(T *p) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1267
  T heap_oop = oopDesc::load_heap_oop(p);
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1268
  if (!oopDesc::is_null(heap_oop)) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1269
    oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1270
    assert(Universe::heap()->is_in_closed_subset(o), "should be in closed");
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1271
  }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1272
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1273
template <class T> void assert_is_in_reserved(T *p) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1274
  T heap_oop = oopDesc::load_heap_oop(p);
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1275
  if (!oopDesc::is_null(heap_oop)) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1276
    oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1277
    assert(Universe::heap()->is_in_reserved(o), "should be in reserved");
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1278
  }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1279
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1280
template <class T> void assert_nothing(T *p) {}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1281
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1282
#else
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1283
template <class T> void assert_is_in(T *p) {}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1284
template <class T> void assert_is_in_closed_subset(T *p) {}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1285
template <class T> void assert_is_in_reserved(T *p) {}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1286
template <class T> void assert_nothing(T *p) {}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1287
#endif // ASSERT
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1288
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1289
//
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1290
// Macros that iterate over areas of oops which are specialized on type of
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1291
// oop pointer either narrow or wide, depending on UseCompressedOops
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1292
//
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1293
// Parameters are:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1294
//   T         - type of oop to point to (either oop or narrowOop)
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1295
//   start_p   - starting pointer for region to iterate over
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1296
//   count     - number of oops or narrowOops to iterate over
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1297
//   do_oop    - action to perform on each oop (it's arbitrary C code which
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1298
//               makes it more efficient to put in a macro rather than making
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1299
//               it a template function)
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1300
//   assert_fn - assert function which is template function because performance
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1301
//               doesn't matter when enabled.
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1302
#define InstanceKlass_SPECIALIZED_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1303
  T, start_p, count, do_oop,                \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1304
  assert_fn)                                \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1305
{                                           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1306
  T* p         = (T*)(start_p);             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1307
  T* const end = p + (count);               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1308
  while (p < end) {                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1309
    (assert_fn)(p);                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1310
    do_oop;                                 \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1311
    ++p;                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1312
  }                                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1313
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1314
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1315
#define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1316
  T, start_p, count, do_oop,                \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1317
  assert_fn)                                \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1318
{                                           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1319
  T* const start = (T*)(start_p);           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1320
  T*       p     = start + (count);         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1321
  while (start < p) {                       \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1322
    --p;                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1323
    (assert_fn)(p);                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1324
    do_oop;                                 \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1325
  }                                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1326
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1327
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1328
#define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1329
  T, start_p, count, low, high,             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1330
  do_oop, assert_fn)                        \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1331
{                                           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1332
  T* const l = (T*)(low);                   \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1333
  T* const h = (T*)(high);                  \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1334
  assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1335
         mask_bits((intptr_t)h, sizeof(T)-1) == 0,   \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1336
         "bounded region must be properly aligned"); \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1337
  T* p       = (T*)(start_p);               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1338
  T* end     = p + (count);                 \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1339
  if (p < l) p = l;                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1340
  if (end > h) end = h;                     \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1341
  while (p < end) {                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1342
    (assert_fn)(p);                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1343
    do_oop;                                 \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1344
    ++p;                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1345
  }                                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1346
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1347
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1348
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1349
// The following macros call specialized macros, passing either oop or
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1350
// narrowOop as the specialization type.  These test the UseCompressedOops
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1351
// flag.
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1352
#define InstanceKlass_OOP_ITERATE(start_p, count,    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1353
                                  do_oop, assert_fn) \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1354
{                                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1355
  if (UseCompressedOops) {                           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1356
    InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1357
      start_p, count,                                \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1358
      do_oop, assert_fn)                             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1359
  } else {                                           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1360
    InstanceKlass_SPECIALIZED_OOP_ITERATE(oop,       \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1361
      start_p, count,                                \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1362
      do_oop, assert_fn)                             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1363
  }                                                  \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1364
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1365
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1366
#define InstanceKlass_BOUNDED_OOP_ITERATE(start_p, count, low, high,    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1367
                                          do_oop, assert_fn) \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1368
{                                                            \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1369
  if (UseCompressedOops) {                                   \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1370
    InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1371
      start_p, count,                                        \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1372
      low, high,                                             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1373
      do_oop, assert_fn)                                     \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1374
  } else {                                                   \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1375
    InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop,       \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1376
      start_p, count,                                        \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1377
      low, high,                                             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1378
      do_oop, assert_fn)                                     \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1379
  }                                                          \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1380
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1381
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1382
#define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn)            \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1383
{                                                                        \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1384
  /* Compute oopmap block range. The common case                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1385
     is nonstatic_oop_map_size == 1. */                                  \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1386
  OopMapBlock* map           = start_of_nonstatic_oop_maps();            \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1387
  OopMapBlock* const end_map = map + nonstatic_oop_map_size();           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1388
  if (UseCompressedOops) {                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1389
    while (map < end_map) {                                              \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1390
      InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop,                   \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1391
        obj->obj_field_addr<narrowOop>(map->offset()), map->length(),    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1392
        do_oop, assert_fn)                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1393
      ++map;                                                             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1394
    }                                                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1395
  } else {                                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1396
    while (map < end_map) {                                              \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1397
      InstanceKlass_SPECIALIZED_OOP_ITERATE(oop,                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1398
        obj->obj_field_addr<oop>(map->offset()), map->length(),          \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1399
        do_oop, assert_fn)                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1400
      ++map;                                                             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1401
    }                                                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1402
  }                                                                      \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1403
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1404
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1405
#define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn)    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1406
{                                                                        \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1407
  OopMapBlock* const start_map = start_of_nonstatic_oop_maps();          \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1408
  OopMapBlock* map             = start_map + nonstatic_oop_map_size();   \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1409
  if (UseCompressedOops) {                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1410
    while (start_map < map) {                                            \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1411
      --map;                                                             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1412
      InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop,           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1413
        obj->obj_field_addr<narrowOop>(map->offset()), map->length(),    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1414
        do_oop, assert_fn)                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1415
    }                                                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1416
  } else {                                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1417
    while (start_map < map) {                                            \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1418
      --map;                                                             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1419
      InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop,                 \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1420
        obj->obj_field_addr<oop>(map->offset()), map->length(),          \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1421
        do_oop, assert_fn)                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1422
    }                                                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1423
  }                                                                      \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1424
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1425
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1426
#define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop,    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1427
                                              assert_fn)                 \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1428
{                                                                        \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1429
  /* Compute oopmap block range. The common case is                      \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1430
     nonstatic_oop_map_size == 1, so we accept the                       \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1431
     usually non-existent extra overhead of examining                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1432
     all the maps. */                                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1433
  OopMapBlock* map           = start_of_nonstatic_oop_maps();            \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1434
  OopMapBlock* const end_map = map + nonstatic_oop_map_size();           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1435
  if (UseCompressedOops) {                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1436
    while (map < end_map) {                                              \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1437
      InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop,           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1438
        obj->obj_field_addr<narrowOop>(map->offset()), map->length(),    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1439
        low, high,                                                       \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1440
        do_oop, assert_fn)                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1441
      ++map;                                                             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1442
    }                                                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1443
  } else {                                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1444
    while (map < end_map) {                                              \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1445
      InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop,                 \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1446
        obj->obj_field_addr<oop>(map->offset()), map->length(),          \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1447
        low, high,                                                       \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1448
        do_oop, assert_fn)                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1449
      ++map;                                                             \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1450
    }                                                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1451
  }                                                                      \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1452
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1453
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1454
void instanceKlass::follow_static_fields() {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1455
  InstanceKlass_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1456
    start_of_static_fields(), static_oop_field_size(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1457
    MarkSweep::mark_and_push(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1458
    assert_is_in_closed_subset)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1459
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1460
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1461
#ifndef SERIALGC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1462
void instanceKlass::follow_static_fields(ParCompactionManager* cm) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1463
  InstanceKlass_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1464
    start_of_static_fields(), static_oop_field_size(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1465
    PSParallelCompact::mark_and_push(cm, p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1466
    assert_is_in)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1467
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1468
#endif // SERIALGC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1469
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1470
void instanceKlass::adjust_static_fields() {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1471
  InstanceKlass_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1472
    start_of_static_fields(), static_oop_field_size(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1473
    MarkSweep::adjust_pointer(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1474
    assert_nothing)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1475
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1476
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1477
#ifndef SERIALGC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1478
void instanceKlass::update_static_fields() {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1479
  InstanceKlass_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1480
    start_of_static_fields(), static_oop_field_size(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1481
    PSParallelCompact::adjust_pointer(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1482
    assert_nothing)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1483
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1484
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1485
void instanceKlass::update_static_fields(HeapWord* beg_addr, HeapWord* end_addr) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1486
  InstanceKlass_BOUNDED_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1487
    start_of_static_fields(), static_oop_field_size(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1488
    beg_addr, end_addr, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1489
    PSParallelCompact::adjust_pointer(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1490
    assert_nothing )
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1491
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1492
#endif // SERIALGC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1493
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1494
void instanceKlass::oop_follow_contents(oop obj) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1495
  assert(obj != NULL, "can't follow the content of NULL object");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1496
  obj->follow_header();
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1497
  InstanceKlass_OOP_MAP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1498
    obj, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1499
    MarkSweep::mark_and_push(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1500
    assert_is_in_closed_subset)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1501
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1502
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1503
#ifndef SERIALGC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1504
void instanceKlass::oop_follow_contents(ParCompactionManager* cm,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1505
                                        oop obj) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1506
  assert(obj != NULL, "can't follow the content of NULL object");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1507
  obj->follow_header(cm);
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1508
  InstanceKlass_OOP_MAP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1509
    obj, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1510
    PSParallelCompact::mark_and_push(cm, p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1511
    assert_is_in)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1512
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1513
#endif // SERIALGC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1514
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1515
// closure's do_header() method dicates whether the given closure should be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1516
// applied to the klass ptr in the object header.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1517
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1518
#define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)        \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1519
                                                                             \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1520
int instanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1521
  SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1522
  /* header */                                                          \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1523
  if (closure->do_header()) {                                           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1524
    obj->oop_iterate_header(closure);                                   \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1525
  }                                                                     \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1526
  InstanceKlass_OOP_MAP_ITERATE(                                        \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1527
    obj,                                                                \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1528
    SpecializationStats::                                               \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1529
      record_do_oop_call##nv_suffix(SpecializationStats::ik);           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1530
    (closure)->do_oop##nv_suffix(p),                                    \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1531
    assert_is_in_closed_subset)                                         \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1532
  return size_helper();                                                 \
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1533
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1534
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1535
#ifndef SERIALGC
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1536
#define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1537
                                                                                \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1538
int instanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj,                \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1539
                                              OopClosureType* closure) {        \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1540
  SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1541
  /* header */                                                                  \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1542
  if (closure->do_header()) {                                                   \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1543
    obj->oop_iterate_header(closure);                                           \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1544
  }                                                                             \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1545
  /* instance variables */                                                      \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1546
  InstanceKlass_OOP_MAP_REVERSE_ITERATE(                                        \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1547
    obj,                                                                        \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1548
    SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1549
    (closure)->do_oop##nv_suffix(p),                                            \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1550
    assert_is_in_closed_subset)                                                 \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1551
   return size_helper();                                                        \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1552
}
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1553
#endif // !SERIALGC
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1554
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1555
#define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1556
                                                                        \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1557
int instanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj,              \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1558
                                                  OopClosureType* closure, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1559
                                                  MemRegion mr) {          \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1560
  SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1561
  if (closure->do_header()) {                                            \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1562
    obj->oop_iterate_header(closure, mr);                                \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1563
  }                                                                      \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1564
  InstanceKlass_BOUNDED_OOP_MAP_ITERATE(                                 \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1565
    obj, mr.start(), mr.end(),                                           \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1566
    (closure)->do_oop##nv_suffix(p),                                     \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1567
    assert_is_in_closed_subset)                                          \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1568
  return size_helper();                                                  \
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1569
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1570
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1571
ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN)
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1572
ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1573
ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m)
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1574
ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m)
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1575
#ifndef SERIALGC
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1576
ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1577
ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
  1578
#endif // !SERIALGC
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1580
void instanceKlass::iterate_static_fields(OopClosure* closure) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1581
    InstanceKlass_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1582
      start_of_static_fields(), static_oop_field_size(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1583
      closure->do_oop(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1584
      assert_is_in_reserved)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1585
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1586
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1587
void instanceKlass::iterate_static_fields(OopClosure* closure,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1588
                                          MemRegion mr) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1589
  InstanceKlass_BOUNDED_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1590
    start_of_static_fields(), static_oop_field_size(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1591
    mr.start(), mr.end(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1592
    (closure)->do_oop_v(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1593
    assert_is_in_closed_subset)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1594
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1595
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1596
int instanceKlass::oop_adjust_pointers(oop obj) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1597
  int size = size_helper();
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1598
  InstanceKlass_OOP_MAP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1599
    obj, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1600
    MarkSweep::adjust_pointer(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1601
    assert_is_in)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1602
  obj->adjust_header();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
  return size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1604
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1605
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1606
#ifndef SERIALGC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1607
void instanceKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
  assert(!pm->depth_first(), "invariant");
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1609
  InstanceKlass_OOP_MAP_REVERSE_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1610
    obj, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1611
    if (PSScavenge::should_scavenge(p)) { \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1612
      pm->claim_or_forward_breadth(p); \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1613
    }, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1614
    assert_nothing )
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1615
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1616
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1617
void instanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1618
  assert(pm->depth_first(), "invariant");
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1619
  InstanceKlass_OOP_MAP_REVERSE_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1620
    obj, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1621
    if (PSScavenge::should_scavenge(p)) { \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1622
      pm->claim_or_forward_depth(p); \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1623
    }, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1624
    assert_nothing )
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1625
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1626
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1627
int instanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1628
  InstanceKlass_OOP_MAP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1629
    obj, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1630
    PSParallelCompact::adjust_pointer(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1631
    assert_nothing)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1632
  return size_helper();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1633
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1634
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1635
int instanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1636
                                       HeapWord* beg_addr, HeapWord* end_addr) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1637
  InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1638
    obj, beg_addr, end_addr, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1639
    PSParallelCompact::adjust_pointer(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1640
    assert_nothing)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1641
  return size_helper();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1642
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1643
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1644
void instanceKlass::copy_static_fields(PSPromotionManager* pm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1645
  assert(!pm->depth_first(), "invariant");
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1646
  InstanceKlass_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1647
    start_of_static_fields(), static_oop_field_size(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1648
    if (PSScavenge::should_scavenge(p)) { \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1649
      pm->claim_or_forward_breadth(p); \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1650
    }, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1651
    assert_nothing )
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1652
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1653
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1654
void instanceKlass::push_static_fields(PSPromotionManager* pm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1655
  assert(pm->depth_first(), "invariant");
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1656
  InstanceKlass_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1657
    start_of_static_fields(), static_oop_field_size(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1658
    if (PSScavenge::should_scavenge(p)) { \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1659
      pm->claim_or_forward_depth(p); \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1660
    }, \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1661
    assert_nothing )
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1662
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1663
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1664
void instanceKlass::copy_static_fields(ParCompactionManager* cm) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1665
  InstanceKlass_OOP_ITERATE( \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1666
    start_of_static_fields(), static_oop_field_size(), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1667
    PSParallelCompact::adjust_pointer(p), \
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  1668
    assert_is_in)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1669
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1670
#endif // SERIALGC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1671
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1672
// This klass is alive but the implementor link is not followed/updated.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1673
// Subklass and sibling links are handled by Klass::follow_weak_klass_links
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1674
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1675
void instanceKlass::follow_weak_klass_links(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1676
  BoolObjectClosure* is_alive, OopClosure* keep_alive) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1677
  assert(is_alive->do_object_b(as_klassOop()), "this oop should be live");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1678
  if (ClassUnloading) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1679
    for (int i = 0; i < implementors_limit; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1680
      klassOop impl = _implementors[i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1681
      if (impl == NULL)  break;  // no more in the list
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1682
      if (!is_alive->do_object_b(impl)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1683
        // remove this guy from the list by overwriting him with the tail
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1684
        int lasti = --_nof_implementors;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1685
        assert(lasti >= i && lasti < implementors_limit, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1686
        _implementors[i] = _implementors[lasti];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1687
        _implementors[lasti] = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1688
        --i; // rerun the loop at this index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1689
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1690
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1691
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1692
    for (int i = 0; i < implementors_limit; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1693
      keep_alive->do_oop(&adr_implementors()[i]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1694
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1695
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1696
  Klass::follow_weak_klass_links(is_alive, keep_alive);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1697
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1698
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1699
void instanceKlass::remove_unshareable_info() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1700
  Klass::remove_unshareable_info();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1701
  init_implementor();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1702
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1703
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1704
static void clear_all_breakpoints(methodOop m) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1705
  m->clear_all_breakpoints();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1706
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1707
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1708
void instanceKlass::release_C_heap_structures() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1709
  // Deallocate oop map cache
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1710
  if (_oop_map_cache != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1711
    delete _oop_map_cache;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1712
    _oop_map_cache = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1713
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1714
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1715
  // Deallocate JNI identifiers for jfieldIDs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1716
  JNIid::deallocate(jni_ids());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1717
  set_jni_ids(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1718
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1719
  jmethodID* jmeths = methods_jmethod_ids_acquire();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1720
  if (jmeths != (jmethodID*)NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1721
    release_set_methods_jmethod_ids(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1722
    FreeHeap(jmeths);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1723
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1724
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1725
  int* indices = methods_cached_itable_indices_acquire();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1726
  if (indices != (int*)NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
    release_set_methods_cached_itable_indices(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1728
    FreeHeap(indices);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
  // release dependencies
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
  nmethodBucket* b = _dependencies;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1733
  _dependencies = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1734
  while (b != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1735
    nmethodBucket* next = b->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1736
    delete b;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1737
    b = next;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1738
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1739
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1740
  // Deallocate breakpoint records
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1741
  if (breakpoints() != 0x0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1742
    methods_do(clear_all_breakpoints);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1743
    assert(breakpoints() == 0x0, "should have cleared breakpoints");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1744
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1745
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1746
  // deallocate information about previous versions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1747
  if (_previous_versions != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1748
    for (int i = _previous_versions->length() - 1; i >= 0; i--) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1749
      PreviousVersionNode * pv_node = _previous_versions->at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1750
      delete pv_node;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1751
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1752
    delete _previous_versions;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1753
    _previous_versions = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1754
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1755
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1756
  // deallocate the cached class file
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1757
  if (_cached_class_file_bytes != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1758
    os::free(_cached_class_file_bytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1759
    _cached_class_file_bytes = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1760
    _cached_class_file_len = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1761
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1762
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1763
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1764
char* instanceKlass::signature_name() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1765
  const char* src = (const char*) (name()->as_C_string());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1766
  const int src_length = (int)strlen(src);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1767
  char* dest = NEW_RESOURCE_ARRAY(char, src_length + 3);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1768
  int src_index = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1769
  int dest_index = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1770
  dest[dest_index++] = 'L';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1771
  while (src_index < src_length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1772
    dest[dest_index++] = src[src_index++];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1773
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1774
  dest[dest_index++] = ';';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1775
  dest[dest_index] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1776
  return dest;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1777
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1778
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1779
// different verisons of is_same_class_package
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1780
bool instanceKlass::is_same_class_package(klassOop class2) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1781
  klassOop class1 = as_klassOop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1782
  oop classloader1 = instanceKlass::cast(class1)->class_loader();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1783
  symbolOop classname1 = Klass::cast(class1)->name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1784
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1785
  if (Klass::cast(class2)->oop_is_objArray()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1786
    class2 = objArrayKlass::cast(class2)->bottom_klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1787
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1788
  oop classloader2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1789
  if (Klass::cast(class2)->oop_is_instance()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1790
    classloader2 = instanceKlass::cast(class2)->class_loader();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1791
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1792
    assert(Klass::cast(class2)->oop_is_typeArray(), "should be type array");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1793
    classloader2 = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1794
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1795
  symbolOop classname2 = Klass::cast(class2)->name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1796
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1797
  return instanceKlass::is_same_class_package(classloader1, classname1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1798
                                              classloader2, classname2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1799
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1800
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1801
bool instanceKlass::is_same_class_package(oop classloader2, symbolOop classname2) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1802
  klassOop class1 = as_klassOop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1803
  oop classloader1 = instanceKlass::cast(class1)->class_loader();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1804
  symbolOop classname1 = Klass::cast(class1)->name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1805
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1806
  return instanceKlass::is_same_class_package(classloader1, classname1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1807
                                              classloader2, classname2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1808
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1809
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1810
// return true if two classes are in the same package, classloader
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1811
// and classname information is enough to determine a class's package
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1812
bool instanceKlass::is_same_class_package(oop class_loader1, symbolOop class_name1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1813
                                          oop class_loader2, symbolOop class_name2) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1814
  if (class_loader1 != class_loader2) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1815
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1816
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1817
    ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1818
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1819
    // The symbolOop's are in UTF8 encoding. Since we only need to check explicitly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1820
    // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1821
    // Otherwise, we just compare jbyte values between the strings.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1822
    jbyte *name1 = class_name1->base();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1823
    jbyte *name2 = class_name2->base();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1824
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1825
    jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/');
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1826
    jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/');
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1827
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1828
    if ((last_slash1 == NULL) || (last_slash2 == NULL)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1829
      // One of the two doesn't have a package.  Only return true
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1830
      // if the other one also doesn't have a package.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
      return last_slash1 == last_slash2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1832
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
      // Skip over '['s
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1834
      if (*name1 == '[') {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1835
        do {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1836
          name1++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1837
        } while (*name1 == '[');
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1838
        if (*name1 != 'L') {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1839
          // Something is terribly wrong.  Shouldn't be here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1840
          return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1842
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
      if (*name2 == '[') {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
        do {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1845
          name2++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1846
        } while (*name2 == '[');
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1847
        if (*name2 != 'L') {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1848
          // Something is terribly wrong.  Shouldn't be here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1849
          return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1850
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1851
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1852
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1853
      // Check that package part is identical
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1854
      int length1 = last_slash1 - name1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1855
      int length2 = last_slash2 - name2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1856
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1857
      return UTF8::equal(name1, length1, name2, length2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1858
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1859
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1860
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1861
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1862
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1863
jint instanceKlass::compute_modifier_flags(TRAPS) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1864
  klassOop k = as_klassOop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1865
  jint access = access_flags().as_int();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1866
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1867
  // But check if it happens to be member class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1868
  typeArrayOop inner_class_list = inner_classes();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1869
  int length = (inner_class_list == NULL) ? 0 : inner_class_list->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1870
  assert (length % instanceKlass::inner_class_next_offset == 0, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1871
  if (length > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1872
    typeArrayHandle inner_class_list_h(THREAD, inner_class_list);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1873
    instanceKlassHandle ik(THREAD, k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1874
    for (int i = 0; i < length; i += instanceKlass::inner_class_next_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1875
      int ioff = inner_class_list_h->ushort_at(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1876
                      i + instanceKlass::inner_class_inner_class_info_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1877
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1878
      // Inner class attribute can be zero, skip it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1879
      // Strange but true:  JVM spec. allows null inner class refs.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1880
      if (ioff == 0) continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1881
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1882
      // only look at classes that are already loaded
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1883
      // since we are looking for the flags for our self.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1884
      symbolOop inner_name = ik->constants()->klass_name_at(ioff);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1885
      if ((ik->name() == inner_name)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1886
        // This is really a member class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1887
        access = inner_class_list_h->ushort_at(i + instanceKlass::inner_class_access_flags_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1888
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1889
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1890
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1891
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1892
  // Remember to strip ACC_SUPER bit
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1893
  return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1894
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1895
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1896
jint instanceKlass::jvmti_class_status() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1897
  jint result = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1898
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1899
  if (is_linked()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1900
    result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1901
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1902
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1903
  if (is_initialized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1904
    assert(is_linked(), "Class status is not consistent");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1905
    result |= JVMTI_CLASS_STATUS_INITIALIZED;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1906
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1907
  if (is_in_error_state()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1908
    result |= JVMTI_CLASS_STATUS_ERROR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1909
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1910
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1911
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1912
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1913
methodOop instanceKlass::method_at_itable(klassOop holder, int index, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1914
  itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1915
  int method_table_offset_in_words = ioe->offset()/wordSize;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1916
  int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1917
                       / itableOffsetEntry::size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1918
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1919
  for (int cnt = 0 ; ; cnt ++, ioe ++) {
2131
98f9cef66a34 6810672: Comment typos
twisti
parents: 1388
diff changeset
  1920
    // If the interface isn't implemented by the receiver class,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1921
    // the VM should throw IncompatibleClassChangeError.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1922
    if (cnt >= nof_interfaces) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1923
      THROW_OOP_0(vmSymbols::java_lang_IncompatibleClassChangeError());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1924
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1925
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1926
    klassOop ik = ioe->interface_klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1927
    if (ik == holder) break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1928
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1929
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1930
  itableMethodEntry* ime = ioe->first_method_entry(as_klassOop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1931
  methodOop m = ime[index].method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1932
  if (m == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1933
    THROW_OOP_0(vmSymbols::java_lang_AbstractMethodError());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1934
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1935
  return m;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1936
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1937
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1938
// On-stack replacement stuff
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1939
void instanceKlass::add_osr_nmethod(nmethod* n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1940
  // only one compilation can be active
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1941
  NEEDS_CLEANUP
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1942
  // This is a short non-blocking critical region, so the no safepoint check is ok.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1943
  OsrList_lock->lock_without_safepoint_check();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1944
  assert(n->is_osr_method(), "wrong kind of nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1945
  n->set_link(osr_nmethods_head());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1946
  set_osr_nmethods_head(n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1947
  // Remember to unlock again
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1948
  OsrList_lock->unlock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1949
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1950
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1951
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1952
void instanceKlass::remove_osr_nmethod(nmethod* n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1953
  // This is a short non-blocking critical region, so the no safepoint check is ok.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1954
  OsrList_lock->lock_without_safepoint_check();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1955
  assert(n->is_osr_method(), "wrong kind of nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1956
  nmethod* last = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1957
  nmethod* cur  = osr_nmethods_head();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1958
  // Search for match
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1959
  while(cur != NULL && cur != n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1960
    last = cur;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1961
    cur = cur->link();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1962
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1963
  if (cur == n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1964
    if (last == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1965
      // Remove first element
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1966
      set_osr_nmethods_head(osr_nmethods_head()->link());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1967
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1968
      last->set_link(cur->link());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1969
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1970
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1971
  n->set_link(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1972
  // Remember to unlock again
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1973
  OsrList_lock->unlock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1974
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1975
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1976
nmethod* instanceKlass::lookup_osr_nmethod(const methodOop m, int bci) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1977
  // This is a short non-blocking critical region, so the no safepoint check is ok.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1978
  OsrList_lock->lock_without_safepoint_check();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1979
  nmethod* osr = osr_nmethods_head();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1980
  while (osr != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1981
    assert(osr->is_osr_method(), "wrong kind of nmethod found in chain");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1982
    if (osr->method() == m &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1983
        (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1984
      // Found a match - return it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1985
      OsrList_lock->unlock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1986
      return osr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1987
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1988
    osr = osr->link();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1989
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1990
  OsrList_lock->unlock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1991
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1992
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1993
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1994
// -----------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1995
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1996
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1997
// Printing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1998
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1999
void FieldPrinter::do_field(fieldDescriptor* fd) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2000
   if (fd->is_static() == (_obj == NULL)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2001
     _st->print("   - ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2002
     fd->print_on(_st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2003
     _st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2004
   } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2005
     fd->print_on_for(_st, _obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2006
     _st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2007
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2008
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2009
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2010
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2011
void instanceKlass::oop_print_on(oop obj, outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2012
  Klass::oop_print_on(obj, st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2013
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2014
  if (as_klassOop() == SystemDictionary::string_klass()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2015
    typeArrayOop value  = java_lang_String::value(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2016
    juint        offset = java_lang_String::offset(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2017
    juint        length = java_lang_String::length(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2018
    if (value != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2019
        value->is_typeArray() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2020
        offset          <= (juint) value->length() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2021
        offset + length <= (juint) value->length()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2022
      st->print("string: ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2023
      Handle h_obj(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2024
      java_lang_String::print(h_obj, st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2025
      st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2026
      if (!WizardMode)  return;  // that is enough
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2027
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2028
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2029
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2030
  st->print_cr("fields:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2031
  FieldPrinter print_nonstatic_field(st, obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2032
  do_nonstatic_fields(&print_nonstatic_field);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2033
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2034
  if (as_klassOop() == SystemDictionary::class_klass()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2035
    klassOop mirrored_klass = java_lang_Class::as_klassOop(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2036
    st->print("   - fake entry for mirror: ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2037
    mirrored_klass->print_value_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2038
    st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2039
    st->print("   - fake entry resolved_constructor: ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2040
    methodOop ctor = java_lang_Class::resolved_constructor(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2041
    ctor->print_value_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2042
    klassOop array_klass = java_lang_Class::array_klass(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2043
    st->print("   - fake entry for array: ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2044
    array_klass->print_value_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2045
    st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2046
    st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2047
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2048
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2049
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2050
void instanceKlass::oop_print_value_on(oop obj, outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2051
  st->print("a ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2052
  name()->print_value_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2053
  obj->print_address_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2054
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2055
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2056
#endif // ndef PRODUCT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2057
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2058
const char* instanceKlass::internal_name() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2059
  return external_name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2060
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2061
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2062
// Verification
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2063
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2064
class VerifyFieldClosure: public OopClosure {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2065
 protected:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2066
  template <class T> void do_oop_work(T* p) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2067
    guarantee(Universe::heap()->is_in_closed_subset(p), "should be in heap");
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2068
    oop obj = oopDesc::load_decode_heap_oop(p);
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2069
    if (!obj->is_oop_or_null()) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2070
      tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2071
      Universe::print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2072
      guarantee(false, "boom");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2073
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2074
  }
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2075
 public:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2076
  virtual void do_oop(oop* p)       { VerifyFieldClosure::do_oop_work(p); }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2077
  virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2078
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2079
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2080
void instanceKlass::oop_verify_on(oop obj, outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2081
  Klass::oop_verify_on(obj, st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2082
  VerifyFieldClosure blk;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2083
  oop_oop_iterate(obj, &blk);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2084
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2085
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2086
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2087
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2088
void instanceKlass::verify_class_klass_nonstatic_oop_maps(klassOop k) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2089
  // This verification code is disabled.  JDK_Version::is_gte_jdk14x_version()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2090
  // cannot be called since this function is called before the VM is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2091
  // able to determine what JDK version is running with.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2092
  // The check below always is false since 1.4.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2093
  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2094
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2095
  // This verification code temporarily disabled for the 1.4
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2096
  // reflection implementation since java.lang.Class now has
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2097
  // Java-level instance fields. Should rewrite this to handle this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2098
  // case.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2099
  if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2100
    // Verify that java.lang.Class instances have a fake oop field added.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2101
    instanceKlass* ik = instanceKlass::cast(k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2102
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2103
    // Check that we have the right class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2104
    static bool first_time = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2105
    guarantee(k == SystemDictionary::class_klass() && first_time, "Invalid verify of maps");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2106
    first_time = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2107
    const int extra = java_lang_Class::number_of_fake_oop_fields;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2108
    guarantee(ik->nonstatic_field_size() == extra, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2109
    guarantee(ik->nonstatic_oop_map_size() == 1, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2110
    guarantee(ik->size_helper() == align_object_size(instanceOopDesc::header_size() + extra), "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2111
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2112
    // Check that the map is (2,extra)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2113
    int offset = java_lang_Class::klass_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2114
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2115
    OopMapBlock* map = ik->start_of_nonstatic_oop_maps();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2116
    guarantee(map->offset() == offset && map->length() == extra, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2117
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2118
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2119
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2120
#endif // ndef PRODUCT
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2121
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2122
// JNIid class for jfieldIDs only
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2123
// Note to reviewers:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2124
// These JNI functions are just moved over to column 1 and not changed
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2125
// in the compressed oops workspace.
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2126
JNIid::JNIid(klassOop holder, int offset, JNIid* next) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2127
  _holder = holder;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2128
  _offset = offset;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2129
  _next = next;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2130
  debug_only(_is_static_field_id = false;)
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2131
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2132
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2133
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2134
JNIid* JNIid::find(int offset) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2135
  JNIid* current = this;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2136
  while (current != NULL) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2137
    if (current->offset() == offset) return current;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2138
    current = current->next();
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2139
  }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2140
  return NULL;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2141
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2142
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2143
void JNIid::oops_do(OopClosure* f) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2144
  for (JNIid* cur = this; cur != NULL; cur = cur->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2145
    f->do_oop(cur->holder_addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2146
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2147
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2148
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2149
void JNIid::deallocate(JNIid* current) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2150
  while (current != NULL) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2151
    JNIid* next = current->next();
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2152
    delete current;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2153
    current = next;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2154
  }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2155
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2156
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2157
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2158
void JNIid::verify(klassOop holder) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2159
  int first_field_offset  = instanceKlass::cast(holder)->offset_of_static_fields();
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2160
  int end_field_offset;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2161
  end_field_offset = first_field_offset + (instanceKlass::cast(holder)->static_field_size() * wordSize);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2162
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2163
  JNIid* current = this;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2164
  while (current != NULL) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2165
    guarantee(current->holder() == holder, "Invalid klass in JNIid");
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2166
#ifdef ASSERT
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2167
    int o = current->offset();
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2168
    if (current->is_static_field_id()) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2169
      guarantee(o >= first_field_offset  && o < end_field_offset,  "Invalid static field offset in JNIid");
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2170
    }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2171
#endif
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2172
    current = current->next();
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2173
  }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2174
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2175
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2176
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2177
#ifdef ASSERT
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2178
void instanceKlass::set_init_state(ClassState state) {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2179
  bool good_state = as_klassOop()->is_shared() ? (_init_state <= state)
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2180
                                               : (_init_state < state);
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2181
  assert(good_state || state == allocated, "illegal state transition");
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2182
  _init_state = state;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2183
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2184
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2185
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2186
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2187
// RedefineClasses() support for previous versions:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2188
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2189
// Add an information node that contains weak references to the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2190
// interesting parts of the previous version of the_class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2191
void instanceKlass::add_previous_version(instanceKlassHandle ikh,
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2192
       BitMap* emcp_methods, int emcp_method_count) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2193
  assert(Thread::current()->is_VM_thread(),
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 225
diff changeset
  2194
         "only VMThread can add previous versions");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2195
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2196
  if (_previous_versions == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2197
    // This is the first previous version so make some space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2198
    // Start with 2 elements under the assumption that the class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2199
    // won't be redefined much.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2200
    _previous_versions =  new (ResourceObj::C_HEAP)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2201
                            GrowableArray<PreviousVersionNode *>(2, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
  // RC_TRACE macro has an embedded ResourceMark
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2205
  RC_TRACE(0x00000100, ("adding previous version ref for %s @%d, EMCP_cnt=%d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
    ikh->external_name(), _previous_versions->length(), emcp_method_count));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2207
  constantPoolHandle cp_h(ikh->constants());
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2208
  jobject cp_ref;
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2209
  if (cp_h->is_shared()) {
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2210
    // a shared ConstantPool requires a regular reference; a weak
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2211
    // reference would be collectible
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2212
    cp_ref = JNIHandles::make_global(cp_h);
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2213
  } else {
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2214
    cp_ref = JNIHandles::make_weak_global(cp_h);
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2215
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2216
  PreviousVersionNode * pv_node = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2217
  objArrayOop old_methods = ikh->methods();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2218
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2219
  if (emcp_method_count == 0) {
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2220
    // non-shared ConstantPool gets a weak reference
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2221
    pv_node = new PreviousVersionNode(cp_ref, !cp_h->is_shared(), NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2222
    RC_TRACE(0x00000400,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2223
      ("add: all methods are obsolete; flushing any EMCP weak refs"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2224
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2225
    int local_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2226
    GrowableArray<jweak>* method_refs = new (ResourceObj::C_HEAP)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2227
      GrowableArray<jweak>(emcp_method_count, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2228
    for (int i = 0; i < old_methods->length(); i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2229
      if (emcp_methods->at(i)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2230
        // this old method is EMCP so save a weak ref
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2231
        methodOop old_method = (methodOop) old_methods->obj_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2232
        methodHandle old_method_h(old_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2233
        jweak method_ref = JNIHandles::make_weak_global(old_method_h);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2234
        method_refs->append(method_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2235
        if (++local_count >= emcp_method_count) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2236
          // no more EMCP methods so bail out now
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2237
          break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2238
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2239
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2240
    }
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2241
    // non-shared ConstantPool gets a weak reference
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2242
    pv_node = new PreviousVersionNode(cp_ref, !cp_h->is_shared(), method_refs);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2243
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2244
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2245
  _previous_versions->append(pv_node);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2246
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2247
  // Using weak references allows the interesting parts of previous
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2248
  // classes to be GC'ed when they are no longer needed. Since the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2249
  // caller is the VMThread and we are at a safepoint, this is a good
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2250
  // time to clear out unused weak references.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2251
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2252
  RC_TRACE(0x00000400, ("add: previous version length=%d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2253
    _previous_versions->length()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2254
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2255
  // skip the last entry since we just added it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2256
  for (int i = _previous_versions->length() - 2; i >= 0; i--) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2257
    // check the previous versions array for a GC'ed weak refs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2258
    pv_node = _previous_versions->at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2259
    cp_ref = pv_node->prev_constant_pool();
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2260
    assert(cp_ref != NULL, "cp ref was unexpectedly cleared");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2261
    if (cp_ref == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2262
      delete pv_node;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2263
      _previous_versions->remove_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2264
      // Since we are traversing the array backwards, we don't have to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2265
      // do anything special with the index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2266
      continue;  // robustness
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2267
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2268
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2269
    constantPoolOop cp = (constantPoolOop)JNIHandles::resolve(cp_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2270
    if (cp == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2271
      // this entry has been GC'ed so remove it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2272
      delete pv_node;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2273
      _previous_versions->remove_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2274
      // Since we are traversing the array backwards, we don't have to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2275
      // do anything special with the index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2276
      continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2277
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2278
      RC_TRACE(0x00000400, ("add: previous version @%d is alive", i));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2279
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2280
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2281
    GrowableArray<jweak>* method_refs = pv_node->prev_EMCP_methods();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2282
    if (method_refs != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2283
      RC_TRACE(0x00000400, ("add: previous methods length=%d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2284
        method_refs->length()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2285
      for (int j = method_refs->length() - 1; j >= 0; j--) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2286
        jweak method_ref = method_refs->at(j);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2287
        assert(method_ref != NULL, "weak method ref was unexpectedly cleared");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2288
        if (method_ref == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2289
          method_refs->remove_at(j);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2290
          // Since we are traversing the array backwards, we don't have to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2291
          // do anything special with the index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2292
          continue;  // robustness
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2293
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2294
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2295
        methodOop method = (methodOop)JNIHandles::resolve(method_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2296
        if (method == NULL || emcp_method_count == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2297
          // This method entry has been GC'ed or the current
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2298
          // RedefineClasses() call has made all methods obsolete
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2299
          // so remove it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2300
          JNIHandles::destroy_weak_global(method_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2301
          method_refs->remove_at(j);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2302
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2303
          // RC_TRACE macro has an embedded ResourceMark
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2304
          RC_TRACE(0x00000400,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2305
            ("add: %s(%s): previous method @%d in version @%d is alive",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2306
            method->name()->as_C_string(), method->signature()->as_C_string(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2307
            j, i));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2308
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2309
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2310
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2311
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2312
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2313
  int obsolete_method_count = old_methods->length() - emcp_method_count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2314
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2315
  if (emcp_method_count != 0 && obsolete_method_count != 0 &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2316
      _previous_versions->length() > 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2317
    // We have a mix of obsolete and EMCP methods. If there is more
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2318
    // than the previous version that we just added, then we have to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2319
    // clear out any matching EMCP method entries the hard way.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2320
    int local_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2321
    for (int i = 0; i < old_methods->length(); i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2322
      if (!emcp_methods->at(i)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2323
        // only obsolete methods are interesting
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2324
        methodOop old_method = (methodOop) old_methods->obj_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2325
        symbolOop m_name = old_method->name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2326
        symbolOop m_signature = old_method->signature();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2327
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2328
        // skip the last entry since we just added it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2329
        for (int j = _previous_versions->length() - 2; j >= 0; j--) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2330
          // check the previous versions array for a GC'ed weak refs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2331
          pv_node = _previous_versions->at(j);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2332
          cp_ref = pv_node->prev_constant_pool();
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2333
          assert(cp_ref != NULL, "cp ref was unexpectedly cleared");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2334
          if (cp_ref == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2335
            delete pv_node;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2336
            _previous_versions->remove_at(j);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2337
            // Since we are traversing the array backwards, we don't have to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2338
            // do anything special with the index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2339
            continue;  // robustness
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2340
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2341
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2342
          constantPoolOop cp = (constantPoolOop)JNIHandles::resolve(cp_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2343
          if (cp == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2344
            // this entry has been GC'ed so remove it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2345
            delete pv_node;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2346
            _previous_versions->remove_at(j);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2347
            // Since we are traversing the array backwards, we don't have to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2348
            // do anything special with the index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2349
            continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2350
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2351
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2352
          GrowableArray<jweak>* method_refs = pv_node->prev_EMCP_methods();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2353
          if (method_refs == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2354
            // We have run into a PreviousVersion generation where
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2355
            // all methods were made obsolete during that generation's
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2356
            // RedefineClasses() operation. At the time of that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2357
            // operation, all EMCP methods were flushed so we don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2358
            // have to go back any further.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2359
            //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2360
            // A NULL method_refs is different than an empty method_refs.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2361
            // We cannot infer any optimizations about older generations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2362
            // from an empty method_refs for the current generation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2363
            break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2364
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2365
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2366
          for (int k = method_refs->length() - 1; k >= 0; k--) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2367
            jweak method_ref = method_refs->at(k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2368
            assert(method_ref != NULL,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2369
              "weak method ref was unexpectedly cleared");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2370
            if (method_ref == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2371
              method_refs->remove_at(k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2372
              // Since we are traversing the array backwards, we don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2373
              // have to do anything special with the index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2374
              continue;  // robustness
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2375
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2376
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2377
            methodOop method = (methodOop)JNIHandles::resolve(method_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2378
            if (method == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2379
              // this method entry has been GC'ed so skip it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2380
              JNIHandles::destroy_weak_global(method_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2381
              method_refs->remove_at(k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2382
              continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2383
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2384
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2385
            if (method->name() == m_name &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2386
                method->signature() == m_signature) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2387
              // The current RedefineClasses() call has made all EMCP
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2388
              // versions of this method obsolete so mark it as obsolete
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2389
              // and remove the weak ref.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2390
              RC_TRACE(0x00000400,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2391
                ("add: %s(%s): flush obsolete method @%d in version @%d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2392
                m_name->as_C_string(), m_signature->as_C_string(), k, j));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2393
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2394
              method->set_is_obsolete();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2395
              JNIHandles::destroy_weak_global(method_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2396
              method_refs->remove_at(k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2397
              break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2398
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2399
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2400
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2401
          // The previous loop may not find a matching EMCP method, but
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2402
          // that doesn't mean that we can optimize and not go any
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2403
          // further back in the PreviousVersion generations. The EMCP
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2404
          // method for this generation could have already been GC'ed,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2405
          // but there still may be an older EMCP method that has not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2406
          // been GC'ed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2407
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2408
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2409
        if (++local_count >= obsolete_method_count) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2410
          // no more obsolete methods so bail out now
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2411
          break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2412
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2413
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2414
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2415
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2416
} // end add_previous_version()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2417
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2418
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2419
// Determine if instanceKlass has a previous version.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2420
bool instanceKlass::has_previous_version() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2421
  if (_previous_versions == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2422
    // no previous versions array so answer is easy
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2423
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2424
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2425
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2426
  for (int i = _previous_versions->length() - 1; i >= 0; i--) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2427
    // Check the previous versions array for an info node that hasn't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2428
    // been GC'ed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2429
    PreviousVersionNode * pv_node = _previous_versions->at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2430
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2431
    jobject cp_ref = pv_node->prev_constant_pool();
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2432
    assert(cp_ref != NULL, "cp reference was unexpectedly cleared");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2433
    if (cp_ref == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2434
      continue;  // robustness
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2435
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2436
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2437
    constantPoolOop cp = (constantPoolOop)JNIHandles::resolve(cp_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2438
    if (cp != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2439
      // we have at least one previous version
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2440
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2441
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2442
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2443
    // We don't have to check the method refs. If the constant pool has
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2444
    // been GC'ed then so have the methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2445
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2446
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2447
  // all of the underlying nodes' info has been GC'ed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2448
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2449
} // end has_previous_version()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2450
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2451
methodOop instanceKlass::method_with_idnum(int idnum) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2452
  methodOop m = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2453
  if (idnum < methods()->length()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2454
    m = (methodOop) methods()->obj_at(idnum);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2455
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2456
  if (m == NULL || m->method_idnum() != idnum) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2457
    for (int index = 0; index < methods()->length(); ++index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2458
      m = (methodOop) methods()->obj_at(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2459
      if (m->method_idnum() == idnum) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2460
        return m;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2461
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2462
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2463
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2464
  return m;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2465
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2466
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2467
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2468
// Set the annotation at 'idnum' to 'anno'.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2469
// We don't want to create or extend the array if 'anno' is NULL, since that is the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2470
// default value.  However, if the array exists and is long enough, we must set NULL values.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2471
void instanceKlass::set_methods_annotations_of(int idnum, typeArrayOop anno, objArrayOop* md_p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2472
  objArrayOop md = *md_p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2473
  if (md != NULL && md->length() > idnum) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2474
    md->obj_at_put(idnum, anno);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2475
  } else if (anno != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2476
    // create the array
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2477
    int length = MAX2(idnum+1, (int)_idnum_allocated_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2478
    md = oopFactory::new_system_objArray(length, Thread::current());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2479
    if (*md_p != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2480
      // copy the existing entries
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2481
      for (int index = 0; index < (*md_p)->length(); index++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2482
        md->obj_at_put(index, (*md_p)->obj_at(index));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2483
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2484
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2485
    set_annotations(md, md_p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2486
    md->obj_at_put(idnum, anno);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2487
  } // if no array and idnum isn't included there is nothing to do
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2488
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2489
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2490
// Construct a PreviousVersionNode entry for the array hung off
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2491
// the instanceKlass.
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2492
PreviousVersionNode::PreviousVersionNode(jobject prev_constant_pool,
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2493
  bool prev_cp_is_weak, GrowableArray<jweak>* prev_EMCP_methods) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2494
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2495
  _prev_constant_pool = prev_constant_pool;
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2496
  _prev_cp_is_weak = prev_cp_is_weak;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2497
  _prev_EMCP_methods = prev_EMCP_methods;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2498
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2499
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2500
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2501
// Destroy a PreviousVersionNode
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2502
PreviousVersionNode::~PreviousVersionNode() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2503
  if (_prev_constant_pool != NULL) {
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2504
    if (_prev_cp_is_weak) {
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2505
      JNIHandles::destroy_weak_global(_prev_constant_pool);
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2506
    } else {
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2507
      JNIHandles::destroy_global(_prev_constant_pool);
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2508
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2509
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2510
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2511
  if (_prev_EMCP_methods != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2512
    for (int i = _prev_EMCP_methods->length() - 1; i >= 0; i--) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2513
      jweak method_ref = _prev_EMCP_methods->at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2514
      if (method_ref != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2515
        JNIHandles::destroy_weak_global(method_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2516
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2517
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2518
    delete _prev_EMCP_methods;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2519
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2520
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2521
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2522
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2523
// Construct a PreviousVersionInfo entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2524
PreviousVersionInfo::PreviousVersionInfo(PreviousVersionNode *pv_node) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2525
  _prev_constant_pool_handle = constantPoolHandle();  // NULL handle
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2526
  _prev_EMCP_method_handles = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2527
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2528
  jobject cp_ref = pv_node->prev_constant_pool();
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
  2529
  assert(cp_ref != NULL, "constant pool ref was unexpectedly cleared");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2530
  if (cp_ref == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2531
    return;  // robustness
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2532
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2533
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2534
  constantPoolOop cp = (constantPoolOop)JNIHandles::resolve(cp_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2535
  if (cp == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2536
    // Weak reference has been GC'ed. Since the constant pool has been
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2537
    // GC'ed, the methods have also been GC'ed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2538
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2539
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2540
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2541
  // make the constantPoolOop safe to return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2542
  _prev_constant_pool_handle = constantPoolHandle(cp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2543
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2544
  GrowableArray<jweak>* method_refs = pv_node->prev_EMCP_methods();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2545
  if (method_refs == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2546
    // the instanceKlass did not have any EMCP methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2547
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2548
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2549
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2550
  _prev_EMCP_method_handles = new GrowableArray<methodHandle>(10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2551
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2552
  int n_methods = method_refs->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2553
  for (int i = 0; i < n_methods; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2554
    jweak method_ref = method_refs->at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2555
    assert(method_ref != NULL, "weak method ref was unexpectedly cleared");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2556
    if (method_ref == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2557
      continue;  // robustness
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2558
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2559
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2560
    methodOop method = (methodOop)JNIHandles::resolve(method_ref);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2561
    if (method == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2562
      // this entry has been GC'ed so skip it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2563
      continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2564
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2565
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2566
    // make the methodOop safe to return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2567
    _prev_EMCP_method_handles->append(methodHandle(method));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2568
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2569
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2570
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2571
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2572
// Destroy a PreviousVersionInfo
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2573
PreviousVersionInfo::~PreviousVersionInfo() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2574
  // Since _prev_EMCP_method_handles is not C-heap allocated, we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2575
  // don't have to delete it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2576
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2577
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2578
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2579
// Construct a helper for walking the previous versions array
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2580
PreviousVersionWalker::PreviousVersionWalker(instanceKlass *ik) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2581
  _previous_versions = ik->previous_versions();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2582
  _current_index = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2583
  // _hm needs no initialization
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2584
  _current_p = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2585
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2586
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2587
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2588
// Destroy a PreviousVersionWalker
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2589
PreviousVersionWalker::~PreviousVersionWalker() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2590
  // Delete the current info just in case the caller didn't walk to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2591
  // the end of the previous versions list. No harm if _current_p is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2592
  // already NULL.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2593
  delete _current_p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2594
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2595
  // When _hm is destroyed, all the Handles returned in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2596
  // PreviousVersionInfo objects will be destroyed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2597
  // Also, after this destructor is finished it will be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2598
  // safe to delete the GrowableArray allocated in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2599
  // PreviousVersionInfo objects.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2600
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2601
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2602
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2603
// Return the interesting information for the next previous version
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2604
// of the klass. Returns NULL if there are no more previous versions.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2605
PreviousVersionInfo* PreviousVersionWalker::next_previous_version() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2606
  if (_previous_versions == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2607
    // no previous versions so nothing to return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2608
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2609
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2610
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2611
  delete _current_p;  // cleanup the previous info for the caller
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2612
  _current_p = NULL;  // reset to NULL so we don't delete same object twice
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2613
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2614
  int length = _previous_versions->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2615
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2616
  while (_current_index < length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2617
    PreviousVersionNode * pv_node = _previous_versions->at(_current_index++);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2618
    PreviousVersionInfo * pv_info = new (ResourceObj::C_HEAP)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2619
                                          PreviousVersionInfo(pv_node);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2620
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2621
    constantPoolHandle cp_h = pv_info->prev_constant_pool_handle();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2622
    if (cp_h.is_null()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2623
      delete pv_info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2624
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2625
      // The underlying node's info has been GC'ed so try the next one.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2626
      // We don't have to check the methods. If the constant pool has
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2627
      // GC'ed then so have the methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2628
      continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2629
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2630
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2631
    // Found a node with non GC'ed info so return it. The caller will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2632
    // need to delete pv_info when they are done with it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2633
    _current_p = pv_info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2634
    return pv_info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2635
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2636
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2637
  // all of the underlying nodes' info has been GC'ed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2638
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2639
} // end next_previous_version()