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src/share/vm/runtime/handles.inline.hpp@2a33b32dd03c (annotated)

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

Thu, 24 May 2018 19:24:53 +0800

author

aoqi

date

Thu, 24 May 2018 19:24:53 +0800

changeset 8861

2a33b32dd03c

parent 6876

710a3c8b516e

permissions

-rw-r--r--

#7046 Disable the compilation when branch offset is beyond short branch
Contributed-by: fujie, aoqi

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
aoqi@0	26	#define SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
aoqi@0	27
aoqi@0	28	#include "runtime/handles.hpp"
aoqi@0	29	#include "runtime/thread.inline.hpp"
aoqi@0	30
aoqi@0	31	// these inline functions are in a separate file to break an include cycle
aoqi@0	32	// between Thread and Handle
aoqi@0	33
aoqi@0	34	inline Handle::Handle(oop obj) {
aoqi@0	35	if (obj == NULL) {
aoqi@0	36	_handle = NULL;
aoqi@0	37	} else {
aoqi@0	38	_handle = Thread::current()->handle_area()->allocate_handle(obj);
aoqi@0	39	}
aoqi@0	40	}
aoqi@0	41
aoqi@0	42
aoqi@0	43	#ifndef ASSERT
aoqi@0	44	inline Handle::Handle(Thread* thread, oop obj) {
aoqi@0	45	assert(thread == Thread::current(), "sanity check");
aoqi@0	46	if (obj == NULL) {
aoqi@0	47	_handle = NULL;
aoqi@0	48	} else {
aoqi@0	49	_handle = thread->handle_area()->allocate_handle(obj);
aoqi@0	50	}
aoqi@0	51	}
aoqi@0	52	#endif // ASSERT
aoqi@0	53
aoqi@0	54	// Constructors for metadata handles
aoqi@0	55	#define DEF_METADATA_HANDLE_FN(name, type) \
aoqi@0	56	inline name##Handle::name##Handle(type* obj) : _value(obj), _thread(NULL) { \
aoqi@0	57	if (obj != NULL) { \
aoqi@0	58	assert(((Metadata*)obj)->is_valid(), "obj is valid"); \
aoqi@0	59	_thread = Thread::current(); \
aoqi@0	60	assert (_thread->is_in_stack((address)this), "not on stack?"); \
aoqi@0	61	_thread->metadata_handles()->push((Metadata*)obj); \
aoqi@0	62	} \
aoqi@0	63	} \
aoqi@0	64	inline name##Handle::name##Handle(Thread* thread, type* obj) : _value(obj), _thread(thread) { \
aoqi@0	65	if (obj != NULL) { \
aoqi@0	66	assert(((Metadata*)obj)->is_valid(), "obj is valid"); \
aoqi@0	67	assert(_thread == Thread::current(), "thread must be current"); \
aoqi@0	68	assert (_thread->is_in_stack((address)this), "not on stack?"); \
aoqi@0	69	_thread->metadata_handles()->push((Metadata*)obj); \
aoqi@0	70	} \
aoqi@0	71	} \
aoqi@0	72	inline name##Handle::name##Handle(const name##Handle &h) { \
aoqi@0	73	_value = h._value; \
aoqi@0	74	if (_value != NULL) { \
aoqi@0	75	assert(_value->is_valid(), "obj is valid"); \
aoqi@0	76	if (h._thread != NULL) { \
aoqi@0	77	assert(h._thread == Thread::current(), "thread must be current");\
aoqi@0	78	_thread = h._thread; \
aoqi@0	79	} else { \
aoqi@0	80	_thread = Thread::current(); \
aoqi@0	81	} \
aoqi@0	82	assert (_thread->is_in_stack((address)this), "not on stack?"); \
aoqi@0	83	_thread->metadata_handles()->push((Metadata*)_value); \
aoqi@0	84	} else { \
aoqi@0	85	_thread = NULL; \
aoqi@0	86	} \
aoqi@0	87	} \
aoqi@0	88	inline name##Handle& name##Handle::operator=(const name##Handle &s) { \
aoqi@0	89	remove(); \
aoqi@0	90	_value = s._value; \
aoqi@0	91	if (_value != NULL) { \
aoqi@0	92	assert(_value->is_valid(), "obj is valid"); \
aoqi@0	93	if (s._thread != NULL) { \
aoqi@0	94	assert(s._thread == Thread::current(), "thread must be current");\
aoqi@0	95	_thread = s._thread; \
aoqi@0	96	} else { \
aoqi@0	97	_thread = Thread::current(); \
aoqi@0	98	} \
aoqi@0	99	assert (_thread->is_in_stack((address)this), "not on stack?"); \
aoqi@0	100	_thread->metadata_handles()->push((Metadata*)_value); \
aoqi@0	101	} else { \
aoqi@0	102	_thread = NULL; \
aoqi@0	103	} \
aoqi@0	104	return *this; \
aoqi@0	105	} \
aoqi@0	106	inline void name##Handle::remove() { \
aoqi@0	107	if (_value != NULL) { \
aoqi@0	108	int i = _thread->metadata_handles()->find_from_end((Metadata*)_value); \
aoqi@0	109	assert(i!=-1, "not in metadata_handles list"); \
aoqi@0	110	_thread->metadata_handles()->remove_at(i); \
aoqi@0	111	} \
aoqi@0	112	} \
aoqi@0	113	inline name##Handle::~name##Handle () { remove(); } \
aoqi@0	114
aoqi@0	115	DEF_METADATA_HANDLE_FN(method, Method)
aoqi@0	116	DEF_METADATA_HANDLE_FN(constantPool, ConstantPool)
aoqi@0	117
aoqi@0	118	inline HandleMark::HandleMark() {
aoqi@0	119	initialize(Thread::current());
aoqi@0	120	}
aoqi@0	121
aoqi@0	122
aoqi@0	123	inline void HandleMark::push() {
aoqi@0	124	// This is intentionally a NOP. pop_and_restore will reset
aoqi@0	125	// values to the HandleMark further down the stack, typically
aoqi@0	126	// in JavaCalls::call_helper.
aoqi@0	127	debug_only(_area->_handle_mark_nesting++);
aoqi@0	128	}
aoqi@0	129
aoqi@0	130	inline void HandleMark::pop_and_restore() {
aoqi@0	131	HandleArea* area = _area; // help compilers with poor alias analysis
aoqi@0	132	// Delete later chunks
aoqi@0	133	if( _chunk->next() ) {
aoqi@0	134	// reset arena size before delete chunks. Otherwise, the total
aoqi@0	135	// arena size could exceed total chunk size
aoqi@0	136	assert(area->size_in_bytes() > size_in_bytes(), "Sanity check");
aoqi@0	137	area->set_size_in_bytes(size_in_bytes());
aoqi@0	138	_chunk->next_chop();
aoqi@0	139	} else {
aoqi@0	140	assert(area->size_in_bytes() == size_in_bytes(), "Sanity check");
aoqi@0	141	}
aoqi@0	142	// Roll back arena to saved top markers
aoqi@0	143	area->_chunk = _chunk;
aoqi@0	144	area->_hwm = _hwm;
aoqi@0	145	area->_max = _max;
aoqi@0	146	debug_only(area->_handle_mark_nesting--);
aoqi@0	147	}
aoqi@0	148
aoqi@0	149	#endif // SHARE_VM_RUNTIME_HANDLES_INLINE_HPP