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[RESTEASY-3314] Use a global executor service to avoid creating too m…
…any executors. https://issues.redhat.com/browse/RESTEASY-3314 Signed-off-by: James R. Perkins <jperkins@redhat.com>
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53 changes: 53 additions & 0 deletions
53
resteasy-core-spi/src/main/java/org/jboss/resteasy/concurrent/ContextualThreadFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /* | ||
| * JBoss, Home of Professional Open Source. | ||
| * | ||
| * Copyright 2023 Red Hat, Inc., and individual contributors | ||
| * as indicated by the @author tags. | ||
| * | ||
| * 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.jboss.resteasy.concurrent; | ||
|
|
||
| import java.security.AccessController; | ||
| import java.security.PrivilegedAction; | ||
| import java.util.concurrent.ThreadFactory; | ||
| import java.util.concurrent.atomic.AtomicInteger; | ||
|
|
||
| /** | ||
| * @author <a href="mailto:jperkins@redhat.com">James R. Perkins</a> | ||
| */ | ||
| class ContextualThreadFactory implements ThreadFactory { | ||
| private static final AtomicInteger POOL_COUNTER = new AtomicInteger(0); | ||
| private final AtomicInteger threadCounter = new AtomicInteger(0); | ||
| private final String prefix; | ||
|
|
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| ContextualThreadFactory(final String prefix) { | ||
| this.prefix = String.format("%s-%d-thread", prefix, POOL_COUNTER.incrementAndGet()); | ||
| } | ||
|
|
||
| @Override | ||
| public Thread newThread(final Runnable r) { | ||
| final Thread thread = new Thread(r, String.format("%s-%d", prefix, threadCounter.incrementAndGet())); | ||
| if (System.getSecurityManager() == null) { | ||
| thread.setDaemon(true); | ||
| thread.setPriority(Thread.NORM_PRIORITY); | ||
| return thread; | ||
| } | ||
| return AccessController.doPrivileged((PrivilegedAction<Thread>) () -> { | ||
| thread.setDaemon(true); | ||
| thread.setPriority(Thread.NORM_PRIORITY); | ||
| return thread; | ||
| }); | ||
| } | ||
| } |
96 changes: 96 additions & 0 deletions
96
...core-spi/src/main/java/org/jboss/resteasy/concurrent/GlobalContextualExecutorService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| /* | ||
| * JBoss, Home of Professional Open Source. | ||
| * | ||
| * Copyright 2023 Red Hat, Inc., and individual contributors | ||
| * as indicated by the @author tags. | ||
| * | ||
| * 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.jboss.resteasy.concurrent; | ||
|
|
||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.concurrent.ExecutorService; | ||
| import java.util.concurrent.Executors; | ||
|
|
||
| /** | ||
| * @author <a href="mailto:jperkins@redhat.com">James R. Perkins</a> | ||
| */ | ||
| class GlobalContextualExecutorService extends ContextualExecutorService implements AutoCloseable { | ||
| static final GlobalContextualExecutorService INSTANCE = new GlobalContextualExecutorService(); | ||
| private final Thread shutdownHook; | ||
|
|
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| private volatile ExecutorService delegate; | ||
|
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| private GlobalContextualExecutorService() { | ||
| super(null, true); | ||
| shutdownHook = new Thread("resteasy-shutdown") { | ||
| @Override | ||
| public void run() { | ||
| synchronized (GlobalContextualExecutorService.this) { | ||
| if (delegate != null) { | ||
| delegate.shutdown(); | ||
| delegate = null; | ||
| } | ||
| } | ||
| } | ||
| }; | ||
| } | ||
|
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||
| @Override | ||
| public void shutdown() { | ||
| // Do nothing as we will shut it down later | ||
| } | ||
|
|
||
| @Override | ||
| public List<Runnable> shutdownNow() { | ||
| return Collections.emptyList(); | ||
| } | ||
|
|
||
| @Override | ||
| public boolean isShutdown() { | ||
| return false; | ||
| } | ||
|
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||
| @Override | ||
| public boolean isTerminated() { | ||
| return false; | ||
| } | ||
|
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| @Override | ||
| ExecutorService getDelegate() { | ||
| if (delegate == null) { | ||
| synchronized (this) { | ||
| if (delegate == null) { | ||
| final int poolSize = SecurityActions.getCoreThreads("dev.resteasy.concurrent.core.pool.size"); | ||
| delegate = Executors | ||
| .newFixedThreadPool(poolSize, new ContextualThreadFactory("contextual-pool")); | ||
| SecurityActions.registerShutdownHook(shutdownHook); | ||
| } | ||
| } | ||
| } | ||
| return delegate; | ||
| } | ||
|
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| @Override | ||
| public void close() { | ||
| synchronized (this) { | ||
| SecurityActions.removeShutdownHook(shutdownHook); | ||
| if (delegate != null) { | ||
| delegate.shutdown(); | ||
| delegate = null; | ||
| } | ||
| } | ||
| } | ||
| } |
95 changes: 95 additions & 0 deletions
95
...src/main/java/org/jboss/resteasy/concurrent/GlobalContextualScheduledExecutorService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| /* | ||
| * JBoss, Home of Professional Open Source. | ||
| * | ||
| * Copyright 2023 Red Hat, Inc., and individual contributors | ||
| * as indicated by the @author tags. | ||
| * | ||
| * 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.jboss.resteasy.concurrent; | ||
|
|
||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.concurrent.ScheduledExecutorService; | ||
|
|
||
| /** | ||
| * @author <a href="mailto:jperkins@redhat.com">James R. Perkins</a> | ||
| */ | ||
| class GlobalContextualScheduledExecutorService extends ContextualScheduledExecutorService implements AutoCloseable { | ||
| static final GlobalContextualScheduledExecutorService INSTANCE = new GlobalContextualScheduledExecutorService(); | ||
| private final Thread shutdownHook; | ||
| private volatile ScheduledExecutorService delegate; | ||
|
|
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| private GlobalContextualScheduledExecutorService() { | ||
| super(null, true); | ||
| shutdownHook = new Thread("resteasy-shutdown") { | ||
| @Override | ||
| public void run() { | ||
| synchronized (GlobalContextualScheduledExecutorService.this) { | ||
| if (delegate != null) { | ||
| delegate.shutdown(); | ||
| delegate = null; | ||
| } | ||
| } | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| @Override | ||
| public void shutdown() { | ||
| // Do nothing as we will shut it down later | ||
| } | ||
|
|
||
| @Override | ||
| public List<Runnable> shutdownNow() { | ||
| return Collections.emptyList(); | ||
| } | ||
|
|
||
| @Override | ||
| public boolean isShutdown() { | ||
| return false; | ||
| } | ||
|
|
||
| @Override | ||
| public boolean isTerminated() { | ||
| return false; | ||
| } | ||
|
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| @Override | ||
| ScheduledExecutorService getDelegate() { | ||
| if (delegate == null) { | ||
| synchronized (this) { | ||
| if (delegate == null) { | ||
| final int poolSize = SecurityActions.getCoreThreads("resteasy.async.timeout.scheduler.min.pool.size"); | ||
| delegate = Executors.newScheduledThreadPool(poolSize, | ||
| new ContextualThreadFactory("contextual-scheduled-pool")); | ||
| SecurityActions.registerShutdownHook(shutdownHook); | ||
| } | ||
| } | ||
| } | ||
| return delegate; | ||
| } | ||
|
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| @Override | ||
| public void close() { | ||
| synchronized (this) { | ||
| SecurityActions.removeShutdownHook(shutdownHook); | ||
| if (delegate != null) { | ||
| delegate.shutdown(); | ||
| delegate = null; | ||
| } | ||
| } | ||
| } | ||
| } |
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