1 /*
   2  * Copyright (c) 2005, 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 "gc_interface/collectedHeap.hpp"
  27 #include "gc_interface/collectedHeap.inline.hpp"
  28 #include "oops/oopsHierarchy.hpp"
  29 #include "runtime/thread.hpp"
  30 #include "utilities/globalDefinitions.hpp"
  31 #ifdef TARGET_OS_FAMILY_linux
  32 # include "thread_linux.inline.hpp"
  33 #endif
  34 #ifdef TARGET_OS_FAMILY_solaris
  35 # include "thread_solaris.inline.hpp"
  36 #endif
  37 #ifdef TARGET_OS_FAMILY_windows
  38 # include "thread_windows.inline.hpp"
  39 #endif
  40 
  41 #ifdef CHECK_UNHANDLED_OOPS
  42 
  43 void oop::register_oop() {
  44   assert (CheckUnhandledOops, "should only call when CheckUnhandledOops");
  45   if (!Universe::is_fully_initialized()) return;
  46   // This gets expensive, which is why checking unhandled oops is on a switch.
  47   Thread* t = ThreadLocalStorage::thread();
  48   if (t != NULL && t->is_Java_thread()) {
  49      frame fr = os::current_frame();
  50      // This points to the oop creator, I guess current frame points to caller
  51      assert (fr.pc(), "should point to a vm frame");
  52      t->unhandled_oops()->register_unhandled_oop(this, fr.pc());
  53   }
  54 }
  55 
  56 void oop::unregister_oop() {
  57   assert (CheckUnhandledOops, "should only call when CheckUnhandledOops");
  58   if (!Universe::is_fully_initialized()) return;
  59   // This gets expensive, which is why checking unhandled oops is on a switch.
  60   Thread* t = ThreadLocalStorage::thread();
  61   if (t != NULL && t->is_Java_thread()) {
  62     t->unhandled_oops()->unregister_unhandled_oop(this);
  63   }
  64 }
  65 #endif // CHECK_UNHANDLED_OOPS