| /* |
| * Copyright 2005 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| # include "incls/_precompiled.incl" |
| # include "incls/_resolutionErrors.cpp.incl" |
| |
| // add new entry to the table |
| void ResolutionErrorTable::add_entry(int index, unsigned int hash, |
| constantPoolHandle pool, int cp_index, symbolHandle error) |
| { |
| assert_locked_or_safepoint(SystemDictionary_lock); |
| assert(!pool.is_null() && !error.is_null(), "adding NULL obj"); |
| |
| ResolutionErrorEntry* entry = new_entry(hash, pool(), cp_index, error()); |
| add_entry(index, entry); |
| } |
| |
| // find entry in the table |
| ResolutionErrorEntry* ResolutionErrorTable::find_entry(int index, unsigned int hash, |
| constantPoolHandle pool, int cp_index) |
| { |
| assert_locked_or_safepoint(SystemDictionary_lock); |
| |
| for (ResolutionErrorEntry *error_probe = bucket(index); |
| error_probe != NULL; |
| error_probe = error_probe->next()) { |
| if (error_probe->hash() == hash && error_probe->pool() == pool()) { |
| return error_probe;; |
| } |
| } |
| return NULL; |
| } |
| |
| // create new error entry |
| ResolutionErrorEntry* ResolutionErrorTable::new_entry(int hash, constantPoolOop pool, |
| int cp_index, symbolOop error) |
| { |
| ResolutionErrorEntry* entry = (ResolutionErrorEntry*)Hashtable::new_entry(hash, pool); |
| entry->set_cp_index(cp_index); |
| entry->set_error(error); |
| |
| return entry; |
| } |
| |
| // create resolution error table |
| ResolutionErrorTable::ResolutionErrorTable(int table_size) |
| : Hashtable(table_size, sizeof(ResolutionErrorEntry)) { |
| } |
| |
| // GC support |
| void ResolutionErrorTable::oops_do(OopClosure* f) { |
| for (int i = 0; i < table_size(); i++) { |
| for (ResolutionErrorEntry* probe = bucket(i); |
| probe != NULL; |
| probe = probe->next()) { |
| assert(probe->pool() != (constantPoolOop)NULL, "resolution error table is corrupt"); |
| assert(probe->error() != (symbolOop)NULL, "resolution error table is corrupt"); |
| probe->oops_do(f); |
| } |
| } |
| } |
| |
| // GC support |
| void ResolutionErrorEntry::oops_do(OopClosure* blk) { |
| blk->do_oop((oop*)pool_addr()); |
| blk->do_oop((oop*)error_addr()); |
| } |
| |
| // We must keep the symbolOop used in the error alive. The constantPoolOop will |
| // decide when the entry can be purged. |
| void ResolutionErrorTable::always_strong_classes_do(OopClosure* blk) { |
| for (int i = 0; i < table_size(); i++) { |
| for (ResolutionErrorEntry* probe = bucket(i); |
| probe != NULL; |
| probe = probe->next()) { |
| assert(probe->error() != (symbolOop)NULL, "resolution error table is corrupt"); |
| blk->do_oop((oop*)probe->error_addr()); |
| } |
| } |
| } |
| |
| // Remove unloaded entries from the table |
| void ResolutionErrorTable::purge_resolution_errors(BoolObjectClosure* is_alive) { |
| assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint") |
| for (int i = 0; i < table_size(); i++) { |
| for (ResolutionErrorEntry** p = bucket_addr(i); *p != NULL; ) { |
| ResolutionErrorEntry* entry = *p; |
| assert(entry->pool() != (constantPoolOop)NULL, "resolution error table is corrupt"); |
| constantPoolOop pool = entry->pool(); |
| if (is_alive->do_object_b(pool)) { |
| p = entry->next_addr(); |
| } else { |
| *p = entry->next(); |
| free_entry(entry); |
| } |
| } |
| } |
| } |