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 #ifdef TARGET_OS_FAMILY_bsd
  40 # include "thread_bsd.inline.hpp"
  41 #endif
  42 
  43 bool always_do_update_barrier = false;
  44 
  45 BarrierSet* oopDesc::_bs = NULL;
  46 
  47 void oopDesc::print_on(outputStream* st) const {
  48   if (this == NULL) {
  49     st->print_cr("NULL");
  50   } else {
  51     blueprint()->oop_print_on(oop(this), st);
  52   }
  53 }
  54 
  55 void oopDesc::print_address_on(outputStream* st) const {
  56   if (PrintOopAddress) {
  57     st->print("{"INTPTR_FORMAT"}", this);
  58   }
  59 }
  60 
  61 void oopDesc::print()         { print_on(tty);         }
  62 
  63 void oopDesc::print_address() { print_address_on(tty); }
  64 
  65 char* oopDesc::print_string() {
  66   stringStream st;
  67   print_on(&st);
  68   return st.as_string();
  69 }
  70 
  71 void oopDesc::print_value() {
  72   print_value_on(tty);
  73 }
  74 
  75 char* oopDesc::print_value_string() {
  76   char buf[100];
  77   stringStream st(buf, sizeof(buf));
  78   print_value_on(&st);
  79   return st.as_string();
  80 }
  81 
  82 void oopDesc::print_value_on(outputStream* st) const {
  83   oop obj = oop(this);
  84   if (this == NULL) {
  85     st->print("NULL");
  86   } else if (java_lang_String::is_instance(obj)) {
  87     java_lang_String::print(obj, st);
  88     if (PrintOopAddress) print_address_on(st);
  89 #ifdef ASSERT
  90   } else if (!Universe::heap()->is_in(obj) || !Universe::heap()->is_in(klass())) {
  91     st->print("### BAD OOP %p ###", (address)obj);
  92 #endif //ASSERT
  93   } else {
  94     blueprint()->oop_print_value_on(obj, st);
  95   }
  96 }
  97 
  98 
  99 void oopDesc::verify_on(outputStream* st) {
 100   if (this != NULL) {
 101     blueprint()->oop_verify_on(this, st);
 102   }
 103 }
 104 
 105 
 106 void oopDesc::verify() {
 107   verify_on(tty);
 108 }
 109 
 110 
 111 // XXX verify_old_oop doesn't do anything (should we remove?)
 112 void oopDesc::verify_old_oop(oop* p, bool allow_dirty) {
 113   blueprint()->oop_verify_old_oop(this, p, allow_dirty);
 114 }
 115 
 116 void oopDesc::verify_old_oop(narrowOop* p, bool allow_dirty) {
 117   blueprint()->oop_verify_old_oop(this, p, allow_dirty);
 118 }
 119 
 120 bool oopDesc::partially_loaded() {
 121   return blueprint()->oop_partially_loaded(this);
 122 }
 123 
 124 
 125 void oopDesc::set_partially_loaded() {
 126   blueprint()->oop_set_partially_loaded(this);
 127 }
 128 
 129 
 130 intptr_t oopDesc::slow_identity_hash() {
 131   // slow case; we have to acquire the micro lock in order to locate the header
 132   ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY
 133   HandleMark hm;
 134   Handle object((oop)this);
 135   assert(!is_shared_readonly(), "using identity hash on readonly object?");
 136   return ObjectSynchronizer::identity_hash_value_for(object);
 137 }
 138 
 139 VerifyOopClosure VerifyOopClosure::verify_oop;
 140 
 141 void VerifyOopClosure::do_oop(oop* p)       { VerifyOopClosure::do_oop_work(p); }
 142 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }