jdk8-mips64-public/hotspot: src/share/vm/oops/oop.cpp@825e6cb66923

8020309: Eliminate InstanceKlass::_cached_class_file_len.
Summary: Use JvmtiCachedClassFileData.
Reviewed-by: iklam, sspitsyn, dcubed

     1 /*

     2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "classfile/altHashing.hpp"

    27 #include "classfile/javaClasses.hpp"

    28 #include "oops/oop.inline.hpp"

    29 #include "runtime/handles.inline.hpp"

    30 #include "runtime/thread.inline.hpp"

    31 #include "utilities/copy.hpp"

    33 bool always_do_update_barrier = false;

    35 BarrierSet* oopDesc::_bs = NULL;

    37 void oopDesc::print_on(outputStream* st) const {

    38   if (this == NULL) {

    39     st->print_cr("NULL");

    40   } else {

    41     klass()->oop_print_on(oop(this), st);

    42   }

    43 }

    45 void oopDesc::print_address_on(outputStream* st) const {

    46   if (PrintOopAddress) {

    47     st->print("{"INTPTR_FORMAT"}", this);

    48   }

    49 }

    51 void oopDesc::print()         { print_on(tty);         }

    53 void oopDesc::print_address() { print_address_on(tty); }

    55 char* oopDesc::print_string() {

    56   stringStream st;

    57   print_on(&st);

    58   return st.as_string();

    59 }

    61 void oopDesc::print_value() {

    62   print_value_on(tty);

    63 }

    65 char* oopDesc::print_value_string() {

    66   char buf[100];

    67   stringStream st(buf, sizeof(buf));

    68   print_value_on(&st);

    69   return st.as_string();

    70 }

    72 void oopDesc::print_value_on(outputStream* st) const {

    73   oop obj = oop(this);

    74   if (this == NULL) {

    75     st->print("NULL");

    76   } else if (java_lang_String::is_instance(obj)) {

    77     java_lang_String::print(obj, st);

    78     if (PrintOopAddress) print_address_on(st);

    79   } else {

    80     klass()->oop_print_value_on(obj, st);

    81   }

    82 }

    85 void oopDesc::verify_on(outputStream* st) {

    86   if (this != NULL) {

    87     klass()->oop_verify_on(this, st);

    88   }

    89 }

    92 void oopDesc::verify() {

    93   verify_on(tty);

    94 }

    96 intptr_t oopDesc::slow_identity_hash() {

    97   // slow case; we have to acquire the micro lock in order to locate the header

    98   ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY

    99   HandleMark hm;

   100   Handle object(this);

   101   return ObjectSynchronizer::identity_hash_value_for(object);

   102 }

   104 // When String table needs to rehash

   105 unsigned int oopDesc::new_hash(jint seed) {

   106   EXCEPTION_MARK;

   107   ResourceMark rm;

   108   int length;

   109   jchar* chars = java_lang_String::as_unicode_string(this, length, THREAD);

   110   if (chars != NULL) {

   111     // Use alternate hashing algorithm on the string

   112     return AltHashing::murmur3_32(seed, chars, length);

   113   } else {

   114     vm_exit_out_of_memory(length, OOM_MALLOC_ERROR, "unable to create Unicode strings for String table rehash");

   115     return 0;

   116   }

   117 }

   119 VerifyOopClosure VerifyOopClosure::verify_oop;

   121 void VerifyOopClosure::do_oop(oop* p)       { VerifyOopClosure::do_oop_work(p); }

   122 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }

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