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src/share/vm/classfile/resolutionErrors.cpp@c18cbe5936b8 (annotated)

src/share/vm/classfile/resolutionErrors.cpp

Thu, 27 May 2010 19:08:38 -0700

author

trims

date

Thu, 27 May 2010 19:08:38 -0700

changeset 1907

c18cbe5936b8

parent 1844

cff162798819

child 2314

f95d63e2154a

permissions

-rw-r--r--

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

duke@435	1	/*
trims@1907	2	* Copyright (c) 2005, 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
duke@435	25	# include "incls/_precompiled.incl"
duke@435	26	# include "incls/_resolutionErrors.cpp.incl"
duke@435	27
duke@435	28	// add new entry to the table
duke@435	29	void ResolutionErrorTable::add_entry(int index, unsigned int hash,
duke@435	30	constantPoolHandle pool, int cp_index, symbolHandle error)
duke@435	31	{
duke@435	32	assert_locked_or_safepoint(SystemDictionary_lock);
duke@435	33	assert(!pool.is_null() && !error.is_null(), "adding NULL obj");
duke@435	34
duke@435	35	ResolutionErrorEntry* entry = new_entry(hash, pool(), cp_index, error());
duke@435	36	add_entry(index, entry);
duke@435	37	}
duke@435	38
duke@435	39	// find entry in the table
duke@435	40	ResolutionErrorEntry* ResolutionErrorTable::find_entry(int index, unsigned int hash,
duke@435	41	constantPoolHandle pool, int cp_index)
duke@435	42	{
duke@435	43	assert_locked_or_safepoint(SystemDictionary_lock);
duke@435	44
duke@435	45	for (ResolutionErrorEntry *error_probe = bucket(index);
duke@435	46	error_probe != NULL;
duke@435	47	error_probe = error_probe->next()) {
duke@435	48	if (error_probe->hash() == hash && error_probe->pool() == pool()) {
duke@435	49	return error_probe;;
duke@435	50	}
duke@435	51	}
duke@435	52	return NULL;
duke@435	53	}
duke@435	54
duke@435	55	// create new error entry
duke@435	56	ResolutionErrorEntry* ResolutionErrorTable::new_entry(int hash, constantPoolOop pool,
duke@435	57	int cp_index, symbolOop error)
duke@435	58	{
duke@435	59	ResolutionErrorEntry* entry = (ResolutionErrorEntry*)Hashtable::new_entry(hash, pool);
duke@435	60	entry->set_cp_index(cp_index);
duke@435	61	entry->set_error(error);
duke@435	62
duke@435	63	return entry;
duke@435	64	}
duke@435	65
duke@435	66	// create resolution error table
duke@435	67	ResolutionErrorTable::ResolutionErrorTable(int table_size)
duke@435	68	: Hashtable(table_size, sizeof(ResolutionErrorEntry)) {
duke@435	69	}
duke@435	70
duke@435	71	// GC support
duke@435	72	void ResolutionErrorTable::oops_do(OopClosure* f) {
duke@435	73	for (int i = 0; i < table_size(); i++) {
duke@435	74	for (ResolutionErrorEntry* probe = bucket(i);
duke@435	75	probe != NULL;
duke@435	76	probe = probe->next()) {
duke@435	77	assert(probe->pool() != (constantPoolOop)NULL, "resolution error table is corrupt");
duke@435	78	assert(probe->error() != (symbolOop)NULL, "resolution error table is corrupt");
duke@435	79	probe->oops_do(f);
duke@435	80	}
duke@435	81	}
duke@435	82	}
duke@435	83
duke@435	84	// GC support
duke@435	85	void ResolutionErrorEntry::oops_do(OopClosure* blk) {
duke@435	86	blk->do_oop((oop*)pool_addr());
duke@435	87	blk->do_oop((oop*)error_addr());
duke@435	88	}
duke@435	89
duke@435	90	// We must keep the symbolOop used in the error alive. The constantPoolOop will
duke@435	91	// decide when the entry can be purged.
duke@435	92	void ResolutionErrorTable::always_strong_classes_do(OopClosure* blk) {
duke@435	93	for (int i = 0; i < table_size(); i++) {
duke@435	94	for (ResolutionErrorEntry* probe = bucket(i);
duke@435	95	probe != NULL;
duke@435	96	probe = probe->next()) {
duke@435	97	assert(probe->error() != (symbolOop)NULL, "resolution error table is corrupt");
duke@435	98	blk->do_oop((oop*)probe->error_addr());
duke@435	99	}
duke@435	100	}
duke@435	101	}
duke@435	102
duke@435	103	// Remove unloaded entries from the table
duke@435	104	void ResolutionErrorTable::purge_resolution_errors(BoolObjectClosure* is_alive) {
jcoomes@1844	105	assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
duke@435	106	for (int i = 0; i < table_size(); i++) {
duke@435	107	for (ResolutionErrorEntry** p = bucket_addr(i); *p != NULL; ) {
duke@435	108	ResolutionErrorEntry* entry = *p;
duke@435	109	assert(entry->pool() != (constantPoolOop)NULL, "resolution error table is corrupt");
duke@435	110	constantPoolOop pool = entry->pool();
duke@435	111	if (is_alive->do_object_b(pool)) {
duke@435	112	p = entry->next_addr();
duke@435	113	} else {
duke@435	114	*p = entry->next();
duke@435	115	free_entry(entry);
duke@435	116	}
duke@435	117	}
duke@435	118	}
duke@435	119	}