diff options
author | CNlucius <lukai1@huawei.com> | 2016-09-13 11:40:12 +0800 |
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committer | CNlucius <lukai1@huawei.com> | 2016-09-13 11:41:53 +0800 |
commit | b731e2f1dd0972409b136aebc7b463dd72c9cfad (patch) | |
tree | 5107d7d80c19ad8076c2c97c2b5ef8d1cf3ab903 /framework/src/onos/utils/misc/src/main/java/org/onlab/util/BlockingBoolean.java | |
parent | ee93993458266114c29271a481ef9ce7ce621b2a (diff) |
ONOSFW-171
O/S-SFC-ONOS scenario documentation
Change-Id: I51ae1cf736ea24ab6680f8edca1b2bf5dd598365
Signed-off-by: CNlucius <lukai1@huawei.com>
Diffstat (limited to 'framework/src/onos/utils/misc/src/main/java/org/onlab/util/BlockingBoolean.java')
-rw-r--r-- | framework/src/onos/utils/misc/src/main/java/org/onlab/util/BlockingBoolean.java | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/framework/src/onos/utils/misc/src/main/java/org/onlab/util/BlockingBoolean.java b/framework/src/onos/utils/misc/src/main/java/org/onlab/util/BlockingBoolean.java deleted file mode 100644 index f3049c31..00000000 --- a/framework/src/onos/utils/misc/src/main/java/org/onlab/util/BlockingBoolean.java +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Copyright 2015 Open Networking Laboratory - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -package org.onlab.util; - -import java.util.concurrent.TimeUnit; -import java.util.concurrent.locks.AbstractQueuedSynchronizer; - -/** - * Mutable boolean that allows threads to wait for a specified value. - */ -public class BlockingBoolean extends AbstractQueuedSynchronizer { - - private static final int TRUE = 1; - private static final int FALSE = 0; - - /** - * Creates a new blocking boolean with the specified value. - * - * @param value the starting value - */ - public BlockingBoolean(boolean value) { - setState(value ? TRUE : FALSE); - } - - /** - * Causes the current thread to wait until the boolean equals the specified - * value unless the thread is {@linkplain Thread#interrupt interrupted}. - * - * @param value specified value - * @throws InterruptedException if interrupted while waiting - */ - public void await(boolean value) throws InterruptedException { - acquireSharedInterruptibly(value ? TRUE : FALSE); - } - - /** - * Causes the current thread to wait until the boolean equals the specified - * value unless the thread is {@linkplain Thread#interrupt interrupted}, - * or the specified waiting time elapses. - * - * @param value specified value - * @param timeout the maximum time to wait - * @param unit the time unit of the {@code timeout} argument - * @return {@code true} if the count reached zero and {@code false} - * if the waiting time elapsed before the count reached zero - * @throws InterruptedException if interrupted while waiting - */ - public boolean await(boolean value, long timeout, TimeUnit unit) - throws InterruptedException { - return tryAcquireSharedNanos(value ? TRUE : FALSE, unit.toNanos(timeout)); - } - - protected int tryAcquireShared(int acquires) { - return (getState() == acquires) ? 1 : -1; - } - - /** - * Sets the value of the blocking boolean. - * - * @param value new value - */ - public void set(boolean value) { - releaseShared(value ? TRUE : FALSE); - } - - /** - * Gets the value of the blocking boolean. - * - * @return current value - */ - public boolean get() { - return getState() == TRUE; - } - - protected boolean tryReleaseShared(int releases) { - // Signal on state change only - int state = getState(); - if (state == releases) { - return false; - } - return compareAndSetState(state, releases); - } - -} |