/*

 * Copyright (c) 2001, 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/concurrentGCThread.hpp"

#include "runtime/init.hpp"

#include "runtime/mutexLocker.hpp"

#include "runtime/orderAccess.hpp"

#include "runtime/os.hpp"

ConcurrentGCThread::ConcurrentGCThread() :

    _should_terminate(false),

    _has_terminated(false) {}

void ConcurrentGCThread::create_and_start(ThreadPriority prio) {

  if (os::create_thread(this, os::cgc_thread)) {

    os::set_priority(this, prio);

    os::start_thread(this);

  }

}

void ConcurrentGCThread::run() {

  // Setup handle area

  set_active_handles(JNIHandleBlock::allocate_block());

  // Wait for initialization to complete

  wait_init_completed();

  run_service();

  // Signal thread has terminated

  MonitorLocker ml(Terminator_lock);

  ml.notify_all();

}

void ConcurrentGCThread::stop() {

  assert(!should_terminate(), "Invalid state");

  assert(!has_terminated(), "Invalid state");

  // Signal thread to terminate

  stop_service();

  // Wait for thread to terminate

  MonitorLocker ml(Terminator_lock);

  while (!_has_terminated) {

    ml.wait();

  }

}

bool ConcurrentGCThread::should_terminate() const {

}

bool ConcurrentGCThread::has_terminated() const {

}