/*

 * Copyright (c) 2018, 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 "code/codeBehaviours.hpp"

#include "runtime/mutexLocker.hpp"

#include "runtime/safepoint.hpp"

CompiledICProtectionBehaviour* CompiledICProtectionBehaviour::_current = NULL;

bool DefaultICProtectionBehaviour::lock(CompiledMethod* method) {

  if (is_safe(method)) {

    return false;

  }

  CompiledIC_lock->lock_without_safepoint_check();

  return true;

}

void DefaultICProtectionBehaviour::unlock(CompiledMethod* method) {

  CompiledIC_lock->unlock();

}

bool DefaultICProtectionBehaviour::is_safe(CompiledMethod* method) {

  return SafepointSynchronize::is_at_safepoint() || CompiledIC_lock->owned_by_self();

}