1 /*
   2  * Copyright (c) 1997, 2010, 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  */
  24 
  25 #include "precompiled.hpp"
  26 #include "classfile/javaClasses.hpp"
  27 #include "oops/oop.inline.hpp"
  28 #include "runtime/handles.inline.hpp"
  29 #include "utilities/copy.hpp"
  30 #ifdef TARGET_OS_FAMILY_linux
  31 # include "thread_linux.inline.hpp"
  32 #endif
  33 #ifdef TARGET_OS_FAMILY_solaris
  34 # include "thread_solaris.inline.hpp"
  35 #endif
  36 #ifdef TARGET_OS_FAMILY_windows
  37 # include "thread_windows.inline.hpp"
  38 #endif
  39 
  40 bool always_do_update_barrier = false;
  41 
  42 BarrierSet* oopDesc::_bs = NULL;
  43 
  44 void oopDesc::print_on(outputStream* st) const {
  45   if (this == NULL) {
  46     st->print_cr("NULL");
  47   } else {
  48     blueprint()->oop_print_on(oop(this), st);
  49   }
  50 }
  51 
  52 void oopDesc::print_address_on(outputStream* st) const {
  53   if (PrintOopAddress) {
  54     st->print("{"INTPTR_FORMAT"}", this);
  55   }
  56 }
  57 
  58 void oopDesc::print()         { print_on(tty);         }
  59 
  60 void oopDesc::print_address() { print_address_on(tty); }
  61 
  62 char* oopDesc::print_string() {
  63   stringStream st;
  64   print_on(&st);
  65   return st.as_string();
  66 }
  67 
  68 void oopDesc::print_value() {
  69   print_value_on(tty);
  70 }
  71 
  72 char* oopDesc::print_value_string() {
  73   char buf[100];
  74   stringStream st(buf, sizeof(buf));
  75   print_value_on(&st);
  76   return st.as_string();
  77 }
  78 
  79 void oopDesc::print_value_on(outputStream* st) const {
  80   oop obj = oop(this);
  81   if (this == NULL) {
  82     st->print("NULL");
  83   } else if (java_lang_String::is_instance(obj)) {
  84     java_lang_String::print(obj, st);
  85     if (PrintOopAddress) print_address_on(st);
  86 #ifdef ASSERT
  87   } else if (!Universe::heap()->is_in(obj) || !Universe::heap()->is_in(klass())) {
  88     st->print("### BAD OOP %p ###", (address)obj);
  89 #endif //ASSERT
  90   } else {
  91     blueprint()->oop_print_value_on(obj, st);
  92   }
  93 }
  94 
  95 
  96 void oopDesc::verify_on(outputStream* st) {
  97   if (this != NULL) {
  98     blueprint()->oop_verify_on(this, st);
  99   }
 100 }
 101 
 102 
 103 void oopDesc::verify() {
 104   verify_on(tty);
 105 }
 106 
 107 
 108 // XXX verify_old_oop doesn't do anything (should we remove?)
 109 void oopDesc::verify_old_oop(oop* p, bool allow_dirty) {
 110   blueprint()->oop_verify_old_oop(this, p, allow_dirty);
 111 }
 112 
 113 void oopDesc::verify_old_oop(narrowOop* p, bool allow_dirty) {
 114   blueprint()->oop_verify_old_oop(this, p, allow_dirty);
 115 }
 116 
 117 bool oopDesc::partially_loaded() {
 118   return blueprint()->oop_partially_loaded(this);
 119 }
 120 
 121 
 122 void oopDesc::set_partially_loaded() {
 123   blueprint()->oop_set_partially_loaded(this);
 124 }
 125 
 126 
 127 intptr_t oopDesc::slow_identity_hash() {
 128   // slow case; we have to acquire the micro lock in order to locate the header
 129   ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY
 130   HandleMark hm;
 131   Handle object((oop)this);
 132   assert(!is_shared_readonly(), "using identity hash on readonly object?");
 133   return ObjectSynchronizer::identity_hash_value_for(object);
 134 }
 135 
 136 VerifyOopClosure VerifyOopClosure::verify_oop;
 137 
 138 void VerifyOopClosure::do_oop(oop* p)       { VerifyOopClosure::do_oop_work(p); }
 139 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }