1/* 2 * Copyright (c) 1998, 2015, 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#ifndef SHARE_VM_RUNTIME_HANDLES_INLINE_HPP 26#define SHARE_VM_RUNTIME_HANDLES_INLINE_HPP 27 28#include "runtime/handles.hpp" 29#include "runtime/thread.inline.hpp" 30 31// these inline functions are in a separate file to break an include cycle 32// between Thread and Handle 33 34inline Handle::Handle(oop obj) { 35 if (obj == NULL) { 36 _handle = NULL; 37 } else { 38 _handle = Thread::current()->handle_area()->allocate_handle(obj); 39 } 40} 41 42 43#ifndef ASSERT 44inline Handle::Handle(Thread* thread, oop obj) { 45 assert(thread == Thread::current(), "sanity check"); 46 if (obj == NULL) { 47 _handle = NULL; 48 } else { 49 _handle = thread->handle_area()->allocate_handle(obj); 50 } 51} 52#endif // ASSERT 53 54// Constructors for metadata handles 55#define DEF_METADATA_HANDLE_FN(name, type) \ 56inline name##Handle::name##Handle(type* obj) : _value(obj), _thread(NULL) { \ 57 if (obj != NULL) { \ 58 assert(((Metadata*)obj)->is_valid(), "obj is valid"); \ 59 _thread = Thread::current(); \ 60 assert (_thread->is_in_stack((address)this), "not on stack?"); \ 61 _thread->metadata_handles()->push((Metadata*)obj); \ 62 } \ 63} \ 64inline name##Handle::name##Handle(Thread* thread, type* obj) : _value(obj), _thread(thread) { \ 65 if (obj != NULL) { \ 66 assert(((Metadata*)obj)->is_valid(), "obj is valid"); \ 67 assert(_thread == Thread::current(), "thread must be current"); \ 68 assert (_thread->is_in_stack((address)this), "not on stack?"); \ 69 _thread->metadata_handles()->push((Metadata*)obj); \ 70 } \ 71} \ 72 73DEF_METADATA_HANDLE_FN(method, Method) 74DEF_METADATA_HANDLE_FN(constantPool, ConstantPool) 75 76inline HandleMark::HandleMark() { 77 initialize(Thread::current()); 78} 79 80 81inline void HandleMark::push() { 82 // This is intentionally a NOP. pop_and_restore will reset 83 // values to the HandleMark further down the stack, typically 84 // in JavaCalls::call_helper. 85 debug_only(_area->_handle_mark_nesting++); 86} 87 88inline void HandleMark::pop_and_restore() { 89 HandleArea* area = _area; // help compilers with poor alias analysis 90 // Delete later chunks 91 if( _chunk->next() ) { 92 // reset arena size before delete chunks. Otherwise, the total 93 // arena size could exceed total chunk size 94 assert(area->size_in_bytes() > size_in_bytes(), "Sanity check"); 95 area->set_size_in_bytes(size_in_bytes()); 96 _chunk->next_chop(); 97 } else { 98 assert(area->size_in_bytes() == size_in_bytes(), "Sanity check"); 99 } 100 // Roll back arena to saved top markers 101 area->_chunk = _chunk; 102 area->_hwm = _hwm; 103 area->_max = _max; 104 debug_only(area->_handle_mark_nesting--); 105} 106 107#endif // SHARE_VM_RUNTIME_HANDLES_INLINE_HPP 108