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Replace synchronized with ReentrantLock (#984)
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driver-core/src/main/com/mongodb/internal/CheckedSupplier.java
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/* | ||
* Copyright 2008-present MongoDB, Inc. | ||
* | ||
* 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. | ||
*/ | ||
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package com.mongodb.internal; | ||
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/** | ||
* This class is not part of the public API and may be removed or changed at any time. | ||
*/ | ||
@FunctionalInterface | ||
public interface CheckedSupplier<T, E extends Exception> { | ||
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/** | ||
* Gets a result. | ||
* | ||
* @return a result | ||
* @throws E the checked exception to throw | ||
*/ | ||
T get() throws E; | ||
} |
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/* | ||
* Copyright 2008-present MongoDB, Inc. | ||
* | ||
* 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. | ||
*/ | ||
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package com.mongodb.internal; | ||
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import com.mongodb.MongoInterruptedException; | ||
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import java.util.concurrent.locks.Lock; | ||
import java.util.function.Supplier; | ||
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/** | ||
* This class is not part of the public API and may be removed or changed at any time. | ||
*/ | ||
public final class Locks { | ||
public static void withLock(final Lock lock, final Runnable action) { | ||
withLock(lock, () -> { | ||
action.run(); | ||
return null; | ||
}); | ||
} | ||
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public static <V> V withLock(final Lock lock, final Supplier<V> supplier) { | ||
return checkedWithLock(lock, supplier::get); | ||
} | ||
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public static <V, E extends Exception> V checkedWithLock(final Lock lock, final CheckedSupplier<V, E> supplier) throws E { | ||
try { | ||
lock.lockInterruptibly(); | ||
try { | ||
return supplier.get(); | ||
} finally { | ||
lock.unlock(); | ||
} | ||
} catch (InterruptedException e) { | ||
Thread.currentThread().interrupt(); | ||
throw new MongoInterruptedException("Interrupted waiting for lock", e); | ||
} | ||
} | ||
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private Locks() { | ||
} | ||
} |
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