| /* |
| * Copyright (c) 1998, 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_RUNTIME_HANDLES_INLINE_HPP |
| #define SHARE_VM_RUNTIME_HANDLES_INLINE_HPP |
| |
| #include "runtime/handles.hpp" |
| #include "runtime/thread.inline.hpp" |
| |
| // 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 |
| |
| // Constructors for metadata handles |
| #define DEF_METADATA_HANDLE_FN(name, type) \ |
| inline name##Handle::name##Handle(type* obj) : _value(obj), _thread(NULL) { \ |
| if (obj != NULL) { \ |
| assert(((Metadata*)obj)->is_valid(), "obj is valid"); \ |
| _thread = Thread::current(); \ |
| assert (_thread->is_in_stack((address)this), "not on stack?"); \ |
| _thread->metadata_handles()->push((Metadata*)obj); \ |
| } \ |
| } \ |
| inline name##Handle::name##Handle(Thread* thread, type* obj) : _value(obj), _thread(thread) { \ |
| if (obj != NULL) { \ |
| assert(((Metadata*)obj)->is_valid(), "obj is valid"); \ |
| assert(_thread == Thread::current(), "thread must be current"); \ |
| assert (_thread->is_in_stack((address)this), "not on stack?"); \ |
| _thread->metadata_handles()->push((Metadata*)obj); \ |
| } \ |
| } \ |
| inline name##Handle::name##Handle(const name##Handle &h) { \ |
| _value = h._value; \ |
| if (_value != NULL) { \ |
| assert(_value->is_valid(), "obj is valid"); \ |
| if (h._thread != NULL) { \ |
| assert(h._thread == Thread::current(), "thread must be current");\ |
| _thread = h._thread; \ |
| } else { \ |
| _thread = Thread::current(); \ |
| } \ |
| assert (_thread->is_in_stack((address)this), "not on stack?"); \ |
| _thread->metadata_handles()->push((Metadata*)_value); \ |
| } else { \ |
| _thread = NULL; \ |
| } \ |
| } \ |
| inline name##Handle& name##Handle::operator=(const name##Handle &s) { \ |
| remove(); \ |
| _value = s._value; \ |
| if (_value != NULL) { \ |
| assert(_value->is_valid(), "obj is valid"); \ |
| if (s._thread != NULL) { \ |
| assert(s._thread == Thread::current(), "thread must be current");\ |
| _thread = s._thread; \ |
| } else { \ |
| _thread = Thread::current(); \ |
| } \ |
| assert (_thread->is_in_stack((address)this), "not on stack?"); \ |
| _thread->metadata_handles()->push((Metadata*)_value); \ |
| } else { \ |
| _thread = NULL; \ |
| } \ |
| return *this; \ |
| } \ |
| inline void name##Handle::remove() { \ |
| if (_value != NULL) { \ |
| int i = _thread->metadata_handles()->find_from_end((Metadata*)_value); \ |
| assert(i!=-1, "not in metadata_handles list"); \ |
| _thread->metadata_handles()->remove_at(i); \ |
| } \ |
| } \ |
| inline name##Handle::~name##Handle () { remove(); } \ |
| |
| DEF_METADATA_HANDLE_FN(method, Method) |
| DEF_METADATA_HANDLE_FN(constantPool, ConstantPool) |
| |
| 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() ) { |
| // reset arena size before delete chunks. Otherwise, the total |
| // arena size could exceed total chunk size |
| assert(area->size_in_bytes() > size_in_bytes(), "Sanity check"); |
| area->set_size_in_bytes(size_in_bytes()); |
| _chunk->next_chop(); |
| } else { |
| assert(area->size_in_bytes() == size_in_bytes(), "Sanity check"); |
| } |
| // Roll back arena to saved top markers |
| area->_chunk = _chunk; |
| area->_hwm = _hwm; |
| area->_max = _max; |
| debug_only(area->_handle_mark_nesting--); |
| } |
| |
| #endif // SHARE_VM_RUNTIME_HANDLES_INLINE_HPP |