| /* |
| * Copyright 1998-2003 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| // these inline functions are in a separate file to break an include cycle |
| // between Thread and Handle |
| |
| inline Handle::Handle(oop obj) { |
| if (obj == NULL) { |
| _handle = NULL; |
| } else { |
| _handle = Thread::current()->handle_area()->allocate_handle(obj); |
| } |
| } |
| |
| |
| #ifndef ASSERT |
| inline Handle::Handle(Thread* thread, oop obj) { |
| assert(thread == Thread::current(), "sanity check"); |
| if (obj == NULL) { |
| _handle = NULL; |
| } else { |
| _handle = thread->handle_area()->allocate_handle(obj); |
| } |
| } |
| #endif // ASSERT |
| |
| |
| inline HandleMark::HandleMark() { |
| initialize(Thread::current()); |
| } |
| |
| |
| inline void HandleMark::push() { |
| // This is intentionally a NOP. pop_and_restore will reset |
| // values to the HandleMark further down the stack, typically |
| // in JavaCalls::call_helper. |
| debug_only(_area->_handle_mark_nesting++); |
| } |
| |
| inline void HandleMark::pop_and_restore() { |
| HandleArea* area = _area; // help compilers with poor alias analysis |
| // Delete later chunks |
| if( _chunk->next() ) { |
| _chunk->next_chop(); |
| } |
| // Roll back arena to saved top markers |
| area->_chunk = _chunk; |
| area->_hwm = _hwm; |
| area->_max = _max; |
| NOT_PRODUCT(area->set_size_in_bytes(_size_in_bytes);) |
| debug_only(area->_handle_mark_nesting--); |
| } |