/*

 * Copyright (c) 2014, 2019, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "precompiled.hpp"

#include "gc/shared/stringdedup/stringDedup.hpp"

#include "gc/shared/stringdedup/stringDedupQueue.hpp"

#include "gc/shared/stringdedup/stringDedupTable.hpp"

#include "gc/shared/stringdedup/stringDedupThread.hpp"

bool StringDedup::_enabled = false;

void StringDedup::gc_prologue(bool resize_and_rehash_table) {

  assert(is_enabled(), "String deduplication not enabled");

  StringDedupQueue::gc_prologue();

  StringDedupTable::gc_prologue(resize_and_rehash_table);

}

void StringDedup::gc_epilogue() {

  assert(is_enabled(), "String deduplication not enabled");

  StringDedupQueue::gc_epilogue();

  StringDedupTable::gc_epilogue();

}

void StringDedup::stop() {

  assert(is_enabled(), "String deduplication not enabled");

  StringDedupThread::thread()->stop();

}

void StringDedup::deduplicate(oop java_string) {

  assert(is_enabled(), "String deduplication not enabled");

  StringDedupStat dummy; // Statistics from this path is never used

  StringDedupTable::deduplicate(java_string, &dummy);

}

void StringDedup::parallel_unlink(StringDedupUnlinkOrOopsDoClosure* unlink, uint worker_id) {

  assert(is_enabled(), "String deduplication not enabled");

  StringDedupQueue::unlink_or_oops_do(unlink);

  StringDedupTable::unlink_or_oops_do(unlink, worker_id);

}

void StringDedup::threads_do(ThreadClosure* tc) {

  assert(is_enabled(), "String deduplication not enabled");

  tc->do_thread(StringDedupThread::thread());

}

void StringDedup::print_worker_threads_on(outputStream* st) {

  assert(is_enabled(), "String deduplication not enabled");

  StringDedupThread::thread()->print_on(st);

  st->cr();

}

void StringDedup::verify() {

  assert(is_enabled(), "String deduplication not enabled");

  StringDedupQueue::verify();

  StringDedupTable::verify();

}

StringDedupUnlinkOrOopsDoClosure::StringDedupUnlinkOrOopsDoClosure(BoolObjectClosure* is_alive,

                                                                   OopClosure* keep_alive) :

  _always_true(),

  _do_nothing(),

  _is_alive(is_alive != NULL ? is_alive : &_always_true),

  _keep_alive(keep_alive != NULL ? keep_alive : &_do_nothing) {

}