duke@435: /*
mikael@6198:  * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #ifndef SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
stefank@2314: #define SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
stefank@2314: 
stefank@2314: #include "runtime/handles.hpp"
stefank@4299: #include "runtime/thread.inline.hpp"
stefank@2314: 
duke@435: // these inline functions are in a separate file to break an include cycle
duke@435: // between Thread and Handle
duke@435: 
duke@435: inline Handle::Handle(oop obj) {
duke@435:   if (obj == NULL) {
duke@435:     _handle = NULL;
duke@435:   } else {
duke@435:     _handle = Thread::current()->handle_area()->allocate_handle(obj);
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: #ifndef ASSERT
duke@435: inline Handle::Handle(Thread* thread, oop obj) {
duke@435:   assert(thread == Thread::current(), "sanity check");
duke@435:   if (obj == NULL) {
duke@435:     _handle = NULL;
duke@435:   } else {
duke@435:     _handle = thread->handle_area()->allocate_handle(obj);
duke@435:   }
duke@435: }
duke@435: #endif // ASSERT
duke@435: 
coleenp@4037: // Constructors for metadata handles
coleenp@4037: #define DEF_METADATA_HANDLE_FN(name, type) \
coleenp@4037: inline name##Handle::name##Handle(type* obj) : _value(obj), _thread(NULL) {       \
coleenp@4037:   if (obj != NULL) {                                                   \
coleenp@4037:     assert(((Metadata*)obj)->is_valid(), "obj is valid");              \
coleenp@4037:     _thread = Thread::current();                                       \
coleenp@4037:     assert (_thread->is_in_stack((address)this), "not on stack?");     \
coleenp@4037:     _thread->metadata_handles()->push((Metadata*)obj);                 \
coleenp@4037:   }                                                                    \
coleenp@4037: }                                                                      \
coleenp@4037: inline name##Handle::name##Handle(Thread* thread, type* obj) : _value(obj), _thread(thread) { \
coleenp@4037:   if (obj != NULL) {                                                   \
coleenp@4037:     assert(((Metadata*)obj)->is_valid(), "obj is valid");              \
coleenp@4037:     assert(_thread == Thread::current(), "thread must be current");    \
coleenp@4037:     assert (_thread->is_in_stack((address)this), "not on stack?");     \
coleenp@4037:     _thread->metadata_handles()->push((Metadata*)obj);                 \
coleenp@4037:   }                                                                    \
coleenp@4037: }                                                                      \
coleenp@4037: inline name##Handle::name##Handle(const name##Handle &h) {             \
coleenp@4037:   _value = h._value;                                                   \
coleenp@4037:   if (_value != NULL) {                                                \
coleenp@4037:     assert(_value->is_valid(), "obj is valid");                        \
coleenp@4037:     if (h._thread != NULL) {                                           \
coleenp@4037:       assert(h._thread == Thread::current(), "thread must be current");\
coleenp@4037:       _thread = h._thread;                                             \
coleenp@4037:     } else {                                                           \
coleenp@4037:       _thread = Thread::current();                                     \
coleenp@4037:     }                                                                  \
coleenp@5749:     assert (_thread->is_in_stack((address)this), "not on stack?");     \
coleenp@4037:     _thread->metadata_handles()->push((Metadata*)_value);              \
coleenp@4395:   } else {                                                             \
coleenp@4395:     _thread = NULL;                                                    \
coleenp@4037:   }                                                                    \
coleenp@4037: }                                                                      \
coleenp@4037: inline name##Handle& name##Handle::operator=(const name##Handle &s) {  \
coleenp@4037:   remove();                                                            \
coleenp@4037:   _value = s._value;                                                   \
coleenp@4037:   if (_value != NULL) {                                                \
coleenp@4037:     assert(_value->is_valid(), "obj is valid");                        \
coleenp@4037:     if (s._thread != NULL) {                                           \
coleenp@4037:       assert(s._thread == Thread::current(), "thread must be current");\
coleenp@4037:       _thread = s._thread;                                             \
coleenp@4037:     } else {                                                           \
coleenp@4037:       _thread = Thread::current();                                     \
coleenp@4037:     }                                                                  \
coleenp@5749:     assert (_thread->is_in_stack((address)this), "not on stack?");     \
coleenp@4037:     _thread->metadata_handles()->push((Metadata*)_value);              \
coleenp@4395:   } else {                                                             \
coleenp@4395:     _thread = NULL;                                                    \
coleenp@4037:   }                                                                    \
coleenp@4037:   return *this;                                                        \
coleenp@4037: }                                                                      \
coleenp@4037: inline void name##Handle::remove() {                                   \
coleenp@4037:   if (_value != NULL) {                                                \
coleenp@4037:     int i = _thread->metadata_handles()->find_from_end((Metadata*)_value); \
coleenp@4037:     assert(i!=-1, "not in metadata_handles list");                     \
coleenp@4037:     _thread->metadata_handles()->remove_at(i);                         \
coleenp@4037:   }                                                                    \
coleenp@4037: }                                                                      \
coleenp@4037: inline name##Handle::~name##Handle () { remove(); }                    \
coleenp@4037: 
coleenp@4037: DEF_METADATA_HANDLE_FN(method, Method)
coleenp@4037: DEF_METADATA_HANDLE_FN(constantPool, ConstantPool)
duke@435: 
duke@435: inline HandleMark::HandleMark() {
duke@435:   initialize(Thread::current());
duke@435: }
duke@435: 
duke@435: 
duke@435: inline void HandleMark::push() {
duke@435:   // This is intentionally a NOP. pop_and_restore will reset
duke@435:   // values to the HandleMark further down the stack, typically
duke@435:   // in JavaCalls::call_helper.
duke@435:   debug_only(_area->_handle_mark_nesting++);
duke@435: }
duke@435: 
duke@435: inline void HandleMark::pop_and_restore() {
duke@435:   HandleArea* area = _area;   // help compilers with poor alias analysis
duke@435:   // Delete later chunks
duke@435:   if( _chunk->next() ) {
zgu@4193:     // reset arena size before delete chunks. Otherwise, the total
zgu@4193:     // arena size could exceed total chunk size
zgu@4193:     assert(area->size_in_bytes() > size_in_bytes(), "Sanity check");
zgu@4193:     area->set_size_in_bytes(size_in_bytes());
duke@435:     _chunk->next_chop();
zgu@4193:   } else {
zgu@4193:     assert(area->size_in_bytes() == size_in_bytes(), "Sanity check");
duke@435:   }
duke@435:   // Roll back arena to saved top markers
duke@435:   area->_chunk = _chunk;
duke@435:   area->_hwm = _hwm;
duke@435:   area->_max = _max;
duke@435:   debug_only(area->_handle_mark_nesting--);
duke@435: }
stefank@2314: 
stefank@2314: #endif // SHARE_VM_RUNTIME_HANDLES_INLINE_HPP