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src/share/vm/classfile/resolutionErrors.cpp@828eafbd85cc (annotated)

src/share/vm/classfile/resolutionErrors.cpp

Wed, 01 Dec 2010 18:26:32 -0500

author

ikrylov

date

Wed, 01 Dec 2010 18:26:32 -0500

changeset 2322

828eafbd85cc

parent 2314

f95d63e2154a

child 2497

3582bf76420e

permissions

-rw-r--r--

6348631: remove the use of the HPI library from Hotspot
Summary: move functions from hpi library to hotspot, communicate with licensees and open source community, check jdk for dependency, file CCC request
Reviewed-by: coleenp, acorn, dsamersoff

duke@435	1	/*
stefank@2314	2	* Copyright (c) 2005, 2010, 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	#include "precompiled.hpp"
stefank@2314	26	#include "classfile/resolutionErrors.hpp"
stefank@2314	27	#include "memory/resourceArea.hpp"
stefank@2314	28	#include "oops/oop.inline.hpp"
stefank@2314	29	#include "runtime/handles.inline.hpp"
stefank@2314	30	#include "runtime/safepoint.hpp"
stefank@2314	31	#include "utilities/hashtable.inline.hpp"
duke@435	32
duke@435	33	// add new entry to the table
duke@435	34	void ResolutionErrorTable::add_entry(int index, unsigned int hash,
duke@435	35	constantPoolHandle pool, int cp_index, symbolHandle error)
duke@435	36	{
duke@435	37	assert_locked_or_safepoint(SystemDictionary_lock);
duke@435	38	assert(!pool.is_null() && !error.is_null(), "adding NULL obj");
duke@435	39
duke@435	40	ResolutionErrorEntry* entry = new_entry(hash, pool(), cp_index, error());
duke@435	41	add_entry(index, entry);
duke@435	42	}
duke@435	43
duke@435	44	// find entry in the table
duke@435	45	ResolutionErrorEntry* ResolutionErrorTable::find_entry(int index, unsigned int hash,
duke@435	46	constantPoolHandle pool, int cp_index)
duke@435	47	{
duke@435	48	assert_locked_or_safepoint(SystemDictionary_lock);
duke@435	49
duke@435	50	for (ResolutionErrorEntry *error_probe = bucket(index);
duke@435	51	error_probe != NULL;
duke@435	52	error_probe = error_probe->next()) {
duke@435	53	if (error_probe->hash() == hash && error_probe->pool() == pool()) {
duke@435	54	return error_probe;;
duke@435	55	}
duke@435	56	}
duke@435	57	return NULL;
duke@435	58	}
duke@435	59
duke@435	60	// create new error entry
duke@435	61	ResolutionErrorEntry* ResolutionErrorTable::new_entry(int hash, constantPoolOop pool,
duke@435	62	int cp_index, symbolOop error)
duke@435	63	{
duke@435	64	ResolutionErrorEntry* entry = (ResolutionErrorEntry*)Hashtable::new_entry(hash, pool);
duke@435	65	entry->set_cp_index(cp_index);
duke@435	66	entry->set_error(error);
duke@435	67
duke@435	68	return entry;
duke@435	69	}
duke@435	70
duke@435	71	// create resolution error table
duke@435	72	ResolutionErrorTable::ResolutionErrorTable(int table_size)
duke@435	73	: Hashtable(table_size, sizeof(ResolutionErrorEntry)) {
duke@435	74	}
duke@435	75
duke@435	76	// GC support
duke@435	77	void ResolutionErrorTable::oops_do(OopClosure* f) {
duke@435	78	for (int i = 0; i < table_size(); i++) {
duke@435	79	for (ResolutionErrorEntry* probe = bucket(i);
duke@435	80	probe != NULL;
duke@435	81	probe = probe->next()) {
duke@435	82	assert(probe->pool() != (constantPoolOop)NULL, "resolution error table is corrupt");
duke@435	83	assert(probe->error() != (symbolOop)NULL, "resolution error table is corrupt");
duke@435	84	probe->oops_do(f);
duke@435	85	}
duke@435	86	}
duke@435	87	}
duke@435	88
duke@435	89	// GC support
duke@435	90	void ResolutionErrorEntry::oops_do(OopClosure* blk) {
duke@435	91	blk->do_oop((oop*)pool_addr());
duke@435	92	blk->do_oop((oop*)error_addr());
duke@435	93	}
duke@435	94
duke@435	95	// We must keep the symbolOop used in the error alive. The constantPoolOop will
duke@435	96	// decide when the entry can be purged.
duke@435	97	void ResolutionErrorTable::always_strong_classes_do(OopClosure* blk) {
duke@435	98	for (int i = 0; i < table_size(); i++) {
duke@435	99	for (ResolutionErrorEntry* probe = bucket(i);
duke@435	100	probe != NULL;
duke@435	101	probe = probe->next()) {
duke@435	102	assert(probe->error() != (symbolOop)NULL, "resolution error table is corrupt");
duke@435	103	blk->do_oop((oop*)probe->error_addr());
duke@435	104	}
duke@435	105	}
duke@435	106	}
duke@435	107
duke@435	108	// Remove unloaded entries from the table
duke@435	109	void ResolutionErrorTable::purge_resolution_errors(BoolObjectClosure* is_alive) {
jcoomes@1844	110	assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
duke@435	111	for (int i = 0; i < table_size(); i++) {
duke@435	112	for (ResolutionErrorEntry** p = bucket_addr(i); *p != NULL; ) {
duke@435	113	ResolutionErrorEntry* entry = *p;
duke@435	114	assert(entry->pool() != (constantPoolOop)NULL, "resolution error table is corrupt");
duke@435	115	constantPoolOop pool = entry->pool();
duke@435	116	if (is_alive->do_object_b(pool)) {
duke@435	117	p = entry->next_addr();
duke@435	118	} else {
duke@435	119	*p = entry->next();
duke@435	120	free_entry(entry);
duke@435	121	}
duke@435	122	}
duke@435	123	}
duke@435	124	}