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2.x: prevent tasks to self interrupt on the standard schedulers
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80 changes: 80 additions & 0 deletions
80
src/main/java/io/reactivex/internal/schedulers/AbstractDirectTask.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| /** | ||
| * Copyright (c) 2016-present, RxJava Contributors. | ||
| * | ||
| * 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 io.reactivex.internal.schedulers; | ||
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| import java.util.concurrent.*; | ||
| import java.util.concurrent.atomic.AtomicReference; | ||
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| import io.reactivex.disposables.Disposable; | ||
| import io.reactivex.internal.functions.Functions; | ||
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| /** | ||
| * Base functionality for direct tasks that manage a runnable and cancellation/completion. | ||
| * @since 2.0.8 | ||
| */ | ||
| abstract class AbstractDirectTask | ||
| extends AtomicReference<Future<?>> | ||
| implements Disposable { | ||
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| private static final long serialVersionUID = 1811839108042568751L; | ||
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| protected final Runnable runnable; | ||
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| protected Thread runner; | ||
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| protected static final FutureTask<Void> FINISHED = new FutureTask<Void>(Functions.EMPTY_RUNNABLE, null); | ||
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| protected static final FutureTask<Void> DISPOSED = new FutureTask<Void>(Functions.EMPTY_RUNNABLE, null); | ||
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| public AbstractDirectTask(Runnable runnable) { | ||
| this.runnable = runnable; | ||
| } | ||
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| @Override | ||
| public final void dispose() { | ||
| Future<?> f = get(); | ||
| if (f != FINISHED && f != DISPOSED) { | ||
| if (compareAndSet(f, DISPOSED)) { | ||
| if (f != null) { | ||
| f.cancel(runner != Thread.currentThread()); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| @Override | ||
| public final boolean isDisposed() { | ||
| Future<?> f = get(); | ||
| return f == FINISHED || f == DISPOSED; | ||
| } | ||
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| public final void setFuture(Future<?> future) { | ||
| for (;;) { | ||
| Future<?> f = get(); | ||
| if (f == FINISHED) { | ||
| break; | ||
| } | ||
| if (f == DISPOSED) { | ||
| future.cancel(runner != Thread.currentThread()); | ||
| break; | ||
| } | ||
| if (compareAndSet(f, future)) { | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| } |
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48 changes: 48 additions & 0 deletions
48
src/main/java/io/reactivex/internal/schedulers/ScheduledDirectPeriodicTask.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| /** | ||
| * Copyright (c) 2016-present, RxJava Contributors. | ||
| * | ||
| * 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 io.reactivex.internal.schedulers; | ||
|
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| import io.reactivex.plugins.RxJavaPlugins; | ||
|
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| /** | ||
| * A Callable to be submitted to an ExecutorService that runs a Runnable | ||
| * action periodically and manages completion/cancellation. | ||
| * @since 2.0.8 | ||
| */ | ||
| public final class ScheduledDirectPeriodicTask extends AbstractDirectTask implements Runnable { | ||
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| private static final long serialVersionUID = 1811839108042568751L; | ||
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| public ScheduledDirectPeriodicTask(Runnable runnable) { | ||
| super(runnable); | ||
| } | ||
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| @Override | ||
| public void run() { | ||
| runner = Thread.currentThread(); | ||
| try { | ||
| try { | ||
| runnable.run(); | ||
| } catch (Throwable ex) { | ||
| lazySet(FINISHED); | ||
| RxJavaPlugins.onError(ex); | ||
| } | ||
| } finally { | ||
| runner = null; | ||
| } | ||
| } | ||
| } |
45 changes: 45 additions & 0 deletions
45
src/main/java/io/reactivex/internal/schedulers/ScheduledDirectTask.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| /** | ||
| * Copyright (c) 2016-present, RxJava Contributors. | ||
| * | ||
| * 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 io.reactivex.internal.schedulers; | ||
|
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| import java.util.concurrent.Callable; | ||
|
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| /** | ||
| * A Callable to be submitted to an ExecutorService that runs a Runnable | ||
| * action and manages completion/cancellation. | ||
| * @since 2.0.8 | ||
| */ | ||
| public final class ScheduledDirectTask extends AbstractDirectTask implements Callable<Void> { | ||
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| private static final long serialVersionUID = 1811839108042568751L; | ||
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| public ScheduledDirectTask(Runnable runnable) { | ||
| super(runnable); | ||
| } | ||
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| @Override | ||
| public Void call() throws Exception { | ||
| runner = Thread.currentThread(); | ||
| try { | ||
| runnable.run(); | ||
| } finally { | ||
| lazySet(FINISHED); | ||
| runner = null; | ||
| } | ||
| return null; | ||
| } | ||
| } |
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