19391366536

Committed 15 Nov 2025 02:44PM UTC coverage: 84.12%. Remained the same

Build # 19391366536

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push

github

Committed by

TAKETODAY

Commit Message

:white_check_mark:

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61484 of 78193 branches covered (78.63%)

Branch coverage included in aggregate %.

145228 of 167543 relevant lines covered (86.68%)

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85.0

today-context/src/main/java/infra/scheduling/concurrent/ExecutorLifecycleDelegate.java

/*
 * Copyright 2017 - 2025 the original author or authors.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see [https://www.gnu.org/licenses/]
 */

package infra.scheduling.concurrent;

import org.jspecify.annotations.Nullable;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;

import infra.context.SmartLifecycle;

/**
 * An internal delegate for common {@link ExecutorService} lifecycle management
 * with pause/resume support.
 *
 * @author Juergen Hoeller
 * @author <a href="https://github.com/TAKETODAY">Harry Yang</a>
 * @see ExecutorConfigurationSupport
 * @see SimpleAsyncTaskScheduler
 * @since 4.0
 */
final class ExecutorLifecycleDelegate implements SmartLifecycle {

  private final ExecutorService executor;

  private final ReentrantLock pauseLock = new ReentrantLock();

  private final Condition unpaused = this.pauseLock.newCondition();

  private volatile boolean paused;

  private volatile boolean shutdown;

  private int executingTaskCount = 0;

  @Nullable
  private Runnable stopCallback;

  public ExecutorLifecycleDelegate(ExecutorService executor) {
    this.executor = executor;
  }

  @Override
  public void start() {
    this.pauseLock.lock();
    try {
      this.paused = false;
      this.unpaused.signalAll();
    }
    finally {
      this.pauseLock.unlock();
    }
  }

  @Override
  public void stop() {
    this.pauseLock.lock();
    try {
      this.paused = true;
      this.stopCallback = null;
    }
    finally {
      this.pauseLock.unlock();
    }
  }

  @Override
  public void stop(Runnable callback) {
    this.pauseLock.lock();
    try {
      this.paused = true;
      if (this.executingTaskCount == 0) {
        this.stopCallback = null;
        callback.run();
      }
      else {
        this.stopCallback = callback;
      }
    }
    finally {
      this.pauseLock.unlock();
    }
  }

  @Override
  public boolean isRunning() {
    return (!this.paused && !this.executor.isTerminated());
  }

  void markShutdown() {
    this.shutdown = true;
  }

  void beforeExecute(Thread thread) {
    this.pauseLock.lock();
    try {
      while (this.paused && !this.shutdown && !this.executor.isShutdown()) {
        this.unpaused.await();
      }
    }
    catch (InterruptedException ex) {
      thread.interrupt();
    }
    finally {
      this.executingTaskCount++;
      this.pauseLock.unlock();
    }
  }

  void afterExecute() {
    this.pauseLock.lock();
    try {
      this.executingTaskCount--;
      if (this.executingTaskCount == 0) {
        Runnable callback = this.stopCallback;
        if (callback != null) {
          callback.run();
          this.stopCallback = null;
        }
      }
    }
    finally {
      this.pauseLock.unlock();
    }
  }

}

1	/*
2	* Copyright 2017 - 2025 the original author or authors.
3	*
4	* This program is free software: you can redistribute it and/or modify
5	* it under the terms of the GNU General Public License as published by
6	* the Free Software Foundation, either version 3 of the License, or
7	* (at your option) any later version.
8	*
9	* This program is distributed in the hope that it will be useful,
10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12	* GNU General Public License for more details.
13	*
14	* You should have received a copy of the GNU General Public License
15	* along with this program. If not, see [https://www.gnu.org/licenses/]
16	*/
17
18	package infra.scheduling.concurrent;
19
20	import org.jspecify.annotations.Nullable;
21
22	import java.util.concurrent.ExecutorService;
23	import java.util.concurrent.locks.Condition;
24	import java.util.concurrent.locks.ReentrantLock;
25
26	import infra.context.SmartLifecycle;
27
28	/**
29	* An internal delegate for common {@link ExecutorService} lifecycle management
30	* with pause/resume support.
31	*
32	* @author Juergen Hoeller
33	* @author <a href="https://github.com/TAKETODAY">Harry Yang</a>
34	* @see ExecutorConfigurationSupport
35	* @see SimpleAsyncTaskScheduler
36	* @since 4.0
37	*/
38	final class ExecutorLifecycleDelegate implements SmartLifecycle {
39
40	private final ExecutorService executor;
41
42	private final ReentrantLock pauseLock = new ReentrantLock();	5✔
43
44	private final Condition unpaused = this.pauseLock.newCondition();	5✔
45
46	private volatile boolean paused;
47
48	private volatile boolean shutdown;
49
50	private int executingTaskCount = 0;	3✔
51
52	@Nullable
53	private Runnable stopCallback;
54
55	public ExecutorLifecycleDelegate(ExecutorService executor) {	2✔
56	this.executor = executor;	3✔
57	}	1✔
58
59	@Override
60	public void start() {
61	this.pauseLock.lock();	3✔
62	try {
63	this.paused = false;	3✔
64	this.unpaused.signalAll();	3✔
65	}
66	finally {
67	this.pauseLock.unlock();	3✔
68	}
69	}	1✔
70
71	@Override
72	public void stop() {
73	this.pauseLock.lock();	3✔
74	try {
75	this.paused = true;	3✔
76	this.stopCallback = null;	3✔
77	}
78	finally {
79	this.pauseLock.unlock();	3✔
80	}
81	}	1✔
82
83	@Override
84	public void stop(Runnable callback) {
85	this.pauseLock.lock();	3✔
86	try {
87	this.paused = true;	3✔
88	if (this.executingTaskCount == 0) {	3!
89	this.stopCallback = null;	3✔
90	callback.run();	3✔
91	}
92	else {
93	this.stopCallback = callback;	×
94	}
95	}
96	finally {
97	this.pauseLock.unlock();	3✔
98	}
99	}	1✔
100
101	@Override
102	public boolean isRunning() {
103	return (!this.paused && !this.executor.isTerminated());	11✔
104	}
105
106	void markShutdown() {
107	this.shutdown = true;	3✔
108	}	1✔
109
110	void beforeExecute(Thread thread) {
111	this.pauseLock.lock();	3✔
112	try {
113	while (this.paused && !this.shutdown && !this.executor.isShutdown()) {	10!
114	this.unpaused.await();	4✔
115	}
116	}
117	catch (InterruptedException ex) {	×
118	thread.interrupt();	×
119	}
120	finally {
121	this.executingTaskCount++;	6✔
122	this.pauseLock.unlock();	3✔
123	}
124	}	1✔
125
126	void afterExecute() {
127	this.pauseLock.lock();	3✔
128	try {
129	this.executingTaskCount--;	6✔
130	if (this.executingTaskCount == 0) {	3✔
131	Runnable callback = this.stopCallback;	3✔
132	if (callback != null) {	2!
133	callback.run();	×
134	this.stopCallback = null;	×
135	}
136	}
137	}
138	finally {
139	this.pauseLock.unlock();	3✔
140	}
141	}	1✔
142
143	}

TAKETODAY / today-infrastructure / 19391366536

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