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Fix Encoding/Formatting
The encoding on these files is not liked by Git and it is forcing them to be updated.
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‎rxjava-core/src/main/java/rx/schedulers/ExecutorScheduler.java

Lines changed: 186 additions & 186 deletions
Original file line numberDiff line numberDiff line change
@@ -1,186 +1,186 @@
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/**
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* Copyright 2014 Netflix, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package rx.schedulers;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.concurrent.Executor;
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import java.util.concurrent.Future;
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import java.util.concurrent.RejectedExecutionException;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
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import rx.Scheduler;
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import rx.Subscription;
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import rx.functions.Action0;
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import rx.plugins.RxJavaPlugins;
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import rx.subscriptions.CompositeSubscription;
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import rx.subscriptions.MultipleAssignmentSubscription;
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import rx.subscriptions.Subscriptions;
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/**
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* Scheduler that wraps an Executor instance and establishes the Scheduler contract upon it.
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* <p>
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* Note that thread-hopping is unavoidable with this kind of Scheduler as we don't know
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* about the underlying threading behavior of the executor.
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*/
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/* public */final class ExecutorScheduler extends Scheduler {
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final Executor executor;
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public ExecutorScheduler(Executor executor) {
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this.executor = executor;
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}
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@Override
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public Worker createWorker() {
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return new ExecutorSchedulerWorker(executor);
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}
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/** Worker that schedules tasks on the executor indirectly through a trampoline mechanism. */
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static final class ExecutorSchedulerWorker extends Scheduler.Worker implements Runnable {
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final Executor executor;
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// TODO: use a better performing structure for task tracking
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final CompositeSubscription tasks;
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// TODO: use MpscLinkedQueue once available
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final ConcurrentLinkedQueue<ExecutorAction> queue;
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final AtomicInteger wip;
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public ExecutorSchedulerWorker(Executor executor) {
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this.executor = executor;
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this.queue = new ConcurrentLinkedQueue<ExecutorAction>();
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this.wip = new AtomicInteger();
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this.tasks = new CompositeSubscription();
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}
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@Override
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public Subscription schedule(Action0 action) {
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if (isUnsubscribed()) {
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return Subscriptions.empty();
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}
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ExecutorAction ea = new ExecutorAction(action, tasks);
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tasks.add(ea);
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queue.offer(ea);
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if (wip.getAndIncrement() == 0) {
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try {
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executor.execute(this);
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} catch (RejectedExecutionException t) {
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// cleanup if rejected
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tasks.remove(ea);
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wip.decrementAndGet();
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// report the error to the plugin
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RxJavaPlugins.getInstance().getErrorHandler().handleError(t);
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// throw it to the caller
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throw t;
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}
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}
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return ea;
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}
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@Override
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public void run() {
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do {
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queue.poll().run();
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} while (wip.decrementAndGet() > 0);
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}
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@Override
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public Subscription schedule(final Action0 action, long delayTime, TimeUnit unit) {
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if (delayTime <= 0) {
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return schedule(action);
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}
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if (isUnsubscribed()) {
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return Subscriptions.empty();
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}
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ScheduledExecutorService service;
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if (executor instanceof ScheduledExecutorService) {
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service = (ScheduledExecutorService)executor;
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} else {
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service = GenericScheduledExecutorService.getInstance();
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}
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final MultipleAssignmentSubscription mas = new MultipleAssignmentSubscription();
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// tasks.add(mas); // Needs a removal without unsubscription
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try {
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Future<?> f = service.schedule(new Runnable() {
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@Override
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public void run() {
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if (mas.isUnsubscribed()) {
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return;
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}
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mas.set(schedule(action));
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// tasks.delete(mas); // Needs a removal without unsubscription
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}
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}, delayTime, unit);
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mas.set(Subscriptions.from(f));
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} catch (RejectedExecutionException t) {
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// report the rejection to plugins
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RxJavaPlugins.getInstance().getErrorHandler().handleError(t);
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throw t;
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}
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return mas;
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}
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@Override
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public boolean isUnsubscribed() {
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return tasks.isUnsubscribed();
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}
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@Override
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public void unsubscribe() {
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tasks.unsubscribe();
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}
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}
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/** Runs the actual action and maintains an unsubscription state. */
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static final class ExecutorAction implements Runnable, Subscription {
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final Action0 actual;
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final CompositeSubscription parent;
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volatile int unsubscribed;
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static final AtomicIntegerFieldUpdater<ExecutorAction> UNSUBSCRIBED_UPDATER
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= AtomicIntegerFieldUpdater.newUpdater(ExecutorAction.class, "unsubscribed");
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public ExecutorAction(Action0 actual, CompositeSubscription parent) {
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this.actual = actual;
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this.parent = parent;
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}
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@Override
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public void run() {
162-
if (isUnsubscribed()) {
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return;
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}
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try {
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actual.call();
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} catch (Throwable t) {
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RxJavaPlugins.getInstance().getErrorHandler().handleError(t);
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} finally {
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unsubscribe();
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}
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}
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@Override
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public boolean isUnsubscribed() {
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return unsubscribed != 0;
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}
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@Override
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public void unsubscribe() {
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if (UNSUBSCRIBED_UPDATER.compareAndSet(this, 0, 1)) {
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parent.remove(this);
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}
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}
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}
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}
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/**
2+
* Copyright 2014 Netflix, Inc.
3+
*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
6+
* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12+
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13+
* License for the specific language governing permissions and limitations under
14+
* the License.
15+
*/
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package rx.schedulers;
17+
18+
import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.concurrent.Executor;
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import java.util.concurrent.Future;
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import java.util.concurrent.RejectedExecutionException;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
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import rx.Scheduler;
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import rx.Subscription;
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import rx.functions.Action0;
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import rx.plugins.RxJavaPlugins;
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import rx.subscriptions.CompositeSubscription;
31+
import rx.subscriptions.MultipleAssignmentSubscription;
32+
import rx.subscriptions.Subscriptions;
33+
34+
/**
35+
* Scheduler that wraps an Executor instance and establishes the Scheduler contract upon it.
36+
* <p>
37+
* Note that thread-hopping is unavoidable with this kind of Scheduler as we don't know
38+
* about the underlying threading behavior of the executor.
39+
*/
40+
/* public */final class ExecutorScheduler extends Scheduler {
41+
final Executor executor;
42+
public ExecutorScheduler(Executor executor) {
43+
this.executor = executor;
44+
}
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@Override
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public Worker createWorker() {
47+
return new ExecutorSchedulerWorker(executor);
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}
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/** Worker that schedules tasks on the executor indirectly through a trampoline mechanism. */
50+
static final class ExecutorSchedulerWorker extends Scheduler.Worker implements Runnable {
51+
final Executor executor;
52+
// TODO: use a better performing structure for task tracking
53+
final CompositeSubscription tasks;
54+
// TODO: use MpscLinkedQueue once available
55+
final ConcurrentLinkedQueue<ExecutorAction> queue;
56+
final AtomicInteger wip;
57+
58+
public ExecutorSchedulerWorker(Executor executor) {
59+
this.executor = executor;
60+
this.queue = new ConcurrentLinkedQueue<ExecutorAction>();
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this.wip = new AtomicInteger();
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this.tasks = new CompositeSubscription();
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}
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@Override
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public Subscription schedule(Action0 action) {
67+
if (isUnsubscribed()) {
68+
return Subscriptions.empty();
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}
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ExecutorAction ea = new ExecutorAction(action, tasks);
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tasks.add(ea);
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queue.offer(ea);
73+
if (wip.getAndIncrement() == 0) {
74+
try {
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executor.execute(this);
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} catch (RejectedExecutionException t) {
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// cleanup if rejected
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tasks.remove(ea);
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wip.decrementAndGet();
80+
// report the error to the plugin
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RxJavaPlugins.getInstance().getErrorHandler().handleError(t);
82+
// throw it to the caller
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throw t;
84+
}
85+
}
86+
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return ea;
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}
89+
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@Override
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public void run() {
92+
do {
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queue.poll().run();
94+
} while (wip.decrementAndGet() > 0);
95+
}
96+
97+
@Override
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public Subscription schedule(final Action0 action, long delayTime, TimeUnit unit) {
99+
if (delayTime <= 0) {
100+
return schedule(action);
101+
}
102+
if (isUnsubscribed()) {
103+
return Subscriptions.empty();
104+
}
105+
ScheduledExecutorService service;
106+
if (executor instanceof ScheduledExecutorService) {
107+
service = (ScheduledExecutorService)executor;
108+
} else {
109+
service = GenericScheduledExecutorService.getInstance();
110+
}
111+
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final MultipleAssignmentSubscription mas = new MultipleAssignmentSubscription();
113+
// tasks.add(mas); // Needs a removal without unsubscription
114+
115+
try {
116+
Future<?> f = service.schedule(new Runnable() {
117+
@Override
118+
public void run() {
119+
if (mas.isUnsubscribed()) {
120+
return;
121+
}
122+
mas.set(schedule(action));
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// tasks.delete(mas); // Needs a removal without unsubscription
124+
}
125+
}, delayTime, unit);
126+
mas.set(Subscriptions.from(f));
127+
} catch (RejectedExecutionException t) {
128+
// report the rejection to plugins
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RxJavaPlugins.getInstance().getErrorHandler().handleError(t);
130+
throw t;
131+
}
132+
133+
return mas;
134+
}
135+
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@Override
137+
public boolean isUnsubscribed() {
138+
return tasks.isUnsubscribed();
139+
}
140+
141+
@Override
142+
public void unsubscribe() {
143+
tasks.unsubscribe();
144+
}
145+
146+
}
147+
/** Runs the actual action and maintains an unsubscription state. */
148+
static final class ExecutorAction implements Runnable, Subscription {
149+
final Action0 actual;
150+
final CompositeSubscription parent;
151+
volatile int unsubscribed;
152+
static final AtomicIntegerFieldUpdater<ExecutorAction> UNSUBSCRIBED_UPDATER
153+
= AtomicIntegerFieldUpdater.newUpdater(ExecutorAction.class, "unsubscribed");
154+
155+
public ExecutorAction(Action0 actual, CompositeSubscription parent) {
156+
this.actual = actual;
157+
this.parent = parent;
158+
}
159+
160+
@Override
161+
public void run() {
162+
if (isUnsubscribed()) {
163+
return;
164+
}
165+
try {
166+
actual.call();
167+
} catch (Throwable t) {
168+
RxJavaPlugins.getInstance().getErrorHandler().handleError(t);
169+
} finally {
170+
unsubscribe();
171+
}
172+
}
173+
@Override
174+
public boolean isUnsubscribed() {
175+
return unsubscribed != 0;
176+
}
177+
178+
@Override
179+
public void unsubscribe() {
180+
if (UNSUBSCRIBED_UPDATER.compareAndSet(this, 0, 1)) {
181+
parent.remove(this);
182+
}
183+
}
184+
185+
}
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}

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