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src/share/vm/runtime/handles.inline.hpp@248ff38d2950 (annotated)

src/share/vm/runtime/handles.inline.hpp

Fri, 28 Mar 2014 10:13:37 -0700

author

vlivanov

date

Fri, 28 Mar 2014 10:13:37 -0700

changeset 6528

248ff38d2950

parent 6198

55fb97c4c58d

child 6876

710a3c8b516e

permissions

-rw-r--r--

8035828: Turn on @Stable support in VM
Reviewed-by: jrose, twisti

duke@435	1	/*
mikael@6198	2	* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
stefank@2314	26	#define SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
stefank@2314	27
stefank@2314	28	#include "runtime/handles.hpp"
stefank@4299	29	#include "runtime/thread.inline.hpp"
stefank@2314	30
duke@435	31	// these inline functions are in a separate file to break an include cycle
duke@435	32	// between Thread and Handle
duke@435	33
duke@435	34	inline Handle::Handle(oop obj) {
duke@435	35	if (obj == NULL) {
duke@435	36	_handle = NULL;
duke@435	37	} else {
duke@435	38	_handle = Thread::current()->handle_area()->allocate_handle(obj);
duke@435	39	}
duke@435	40	}
duke@435	41
duke@435	42
duke@435	43	#ifndef ASSERT
duke@435	44	inline Handle::Handle(Thread* thread, oop obj) {
duke@435	45	assert(thread == Thread::current(), "sanity check");
duke@435	46	if (obj == NULL) {
duke@435	47	_handle = NULL;
duke@435	48	} else {
duke@435	49	_handle = thread->handle_area()->allocate_handle(obj);
duke@435	50	}
duke@435	51	}
duke@435	52	#endif // ASSERT
duke@435	53
coleenp@4037	54	// Constructors for metadata handles
coleenp@4037	55	#define DEF_METADATA_HANDLE_FN(name, type) \
coleenp@4037	56	inline name##Handle::name##Handle(type* obj) : _value(obj), _thread(NULL) { \
coleenp@4037	57	if (obj != NULL) { \
coleenp@4037	58	assert(((Metadata*)obj)->is_valid(), "obj is valid"); \
coleenp@4037	59	_thread = Thread::current(); \
coleenp@4037	60	assert (_thread->is_in_stack((address)this), "not on stack?"); \
coleenp@4037	61	_thread->metadata_handles()->push((Metadata*)obj); \
coleenp@4037	62	} \
coleenp@4037	63	} \
coleenp@4037	64	inline name##Handle::name##Handle(Thread* thread, type* obj) : _value(obj), _thread(thread) { \
coleenp@4037	65	if (obj != NULL) { \
coleenp@4037	66	assert(((Metadata*)obj)->is_valid(), "obj is valid"); \
coleenp@4037	67	assert(_thread == Thread::current(), "thread must be current"); \
coleenp@4037	68	assert (_thread->is_in_stack((address)this), "not on stack?"); \
coleenp@4037	69	_thread->metadata_handles()->push((Metadata*)obj); \
coleenp@4037	70	} \
coleenp@4037	71	} \
coleenp@4037	72	inline name##Handle::name##Handle(const name##Handle &h) { \
coleenp@4037	73	_value = h._value; \
coleenp@4037	74	if (_value != NULL) { \
coleenp@4037	75	assert(_value->is_valid(), "obj is valid"); \
coleenp@4037	76	if (h._thread != NULL) { \
coleenp@4037	77	assert(h._thread == Thread::current(), "thread must be current");\
coleenp@4037	78	_thread = h._thread; \
coleenp@4037	79	} else { \
coleenp@4037	80	_thread = Thread::current(); \
coleenp@4037	81	} \
coleenp@5749	82	assert (_thread->is_in_stack((address)this), "not on stack?"); \
coleenp@4037	83	_thread->metadata_handles()->push((Metadata*)_value); \
coleenp@4395	84	} else { \
coleenp@4395	85	_thread = NULL; \
coleenp@4037	86	} \
coleenp@4037	87	} \
coleenp@4037	88	inline name##Handle& name##Handle::operator=(const name##Handle &s) { \
coleenp@4037	89	remove(); \
coleenp@4037	90	_value = s._value; \
coleenp@4037	91	if (_value != NULL) { \
coleenp@4037	92	assert(_value->is_valid(), "obj is valid"); \
coleenp@4037	93	if (s._thread != NULL) { \
coleenp@4037	94	assert(s._thread == Thread::current(), "thread must be current");\
coleenp@4037	95	_thread = s._thread; \
coleenp@4037	96	} else { \
coleenp@4037	97	_thread = Thread::current(); \
coleenp@4037	98	} \
coleenp@5749	99	assert (_thread->is_in_stack((address)this), "not on stack?"); \
coleenp@4037	100	_thread->metadata_handles()->push((Metadata*)_value); \
coleenp@4395	101	} else { \
coleenp@4395	102	_thread = NULL; \
coleenp@4037	103	} \
coleenp@4037	104	return *this; \
coleenp@4037	105	} \
coleenp@4037	106	inline void name##Handle::remove() { \
coleenp@4037	107	if (_value != NULL) { \
coleenp@4037	108	int i = _thread->metadata_handles()->find_from_end((Metadata*)_value); \
coleenp@4037	109	assert(i!=-1, "not in metadata_handles list"); \
coleenp@4037	110	_thread->metadata_handles()->remove_at(i); \
coleenp@4037	111	} \
coleenp@4037	112	} \
coleenp@4037	113	inline name##Handle::~name##Handle () { remove(); } \
coleenp@4037	114
coleenp@4037	115	DEF_METADATA_HANDLE_FN(method, Method)
coleenp@4037	116	DEF_METADATA_HANDLE_FN(constantPool, ConstantPool)
duke@435	117
duke@435	118	inline HandleMark::HandleMark() {
duke@435	119	initialize(Thread::current());
duke@435	120	}
duke@435	121
duke@435	122
duke@435	123	inline void HandleMark::push() {
duke@435	124	// This is intentionally a NOP. pop_and_restore will reset
duke@435	125	// values to the HandleMark further down the stack, typically
duke@435	126	// in JavaCalls::call_helper.
duke@435	127	debug_only(_area->_handle_mark_nesting++);
duke@435	128	}
duke@435	129
duke@435	130	inline void HandleMark::pop_and_restore() {
duke@435	131	HandleArea* area = _area; // help compilers with poor alias analysis
duke@435	132	// Delete later chunks
duke@435	133	if( _chunk->next() ) {
zgu@4193	134	// reset arena size before delete chunks. Otherwise, the total
zgu@4193	135	// arena size could exceed total chunk size
zgu@4193	136	assert(area->size_in_bytes() > size_in_bytes(), "Sanity check");
zgu@4193	137	area->set_size_in_bytes(size_in_bytes());
duke@435	138	_chunk->next_chop();
zgu@4193	139	} else {
zgu@4193	140	assert(area->size_in_bytes() == size_in_bytes(), "Sanity check");
duke@435	141	}
duke@435	142	// Roll back arena to saved top markers
duke@435	143	area->_chunk = _chunk;
duke@435	144	area->_hwm = _hwm;
duke@435	145	area->_max = _max;
duke@435	146	debug_only(area->_handle_mark_nesting--);
duke@435	147	}
stefank@2314	148
stefank@2314	149	#endif // SHARE_VM_RUNTIME_HANDLES_INLINE_HPP