/*
 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * 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.
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package org.graalvm.compiler.nodes;

import org.graalvm.compiler.core.common.CancellationBailoutException;

/**
 * An interface for supporting co-operative cancellation of tasks. An external entity gives a
 * Cancellable to a task and the task polls the Cancellable at regular intervals. If
 * {@link #isCancelled} returns true, then the task will promptly terminate by means of throwing a
 * {@link CancellationBailoutException}.
 */
public interface Cancellable {
    /**
     * Determines if this task has been cancelled.
     */
    boolean isCancelled();
}