Avoid thread pinning in SseEmitter, ResponseBodyEmitter#35423
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acktsap
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Sep 4, 2025
| private static final MediaType TEXT_PLAIN = new MediaType("text", "plain", StandardCharsets.UTF_8); | ||
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| /** Guards access to write operations on the response. */ | ||
| private final Lock writeLock = new ReentrantLock(); |
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I just moved this field to the upper level & changed it to protected
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@acktsap please run the build locally before submitting a PR: |
Closes spring-projectsgh-35422 Signed-off-by: Taeik Lim <sibera21@gmail.com>
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Completed |
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Fixed via c788554 |
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Thanks for raising this @acktsap , this is now merged. |
kilink
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Sep 11, 2025
| */ | ||
| public synchronized void send(Object object, @Nullable MediaType mediaType) throws IOException { | ||
| public void send(Object object, @Nullable MediaType mediaType) throws IOException { | ||
| Assert.state(!this.complete, () -> "ResponseBodyEmitter has already completed" + |
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This is reading plain fields now with no synchronization
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To clarify, I think it has introduced a bug, since the complete and failure fields aren't read while holding the lock.
bclozel
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Sep 12, 2025
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Closes gh-35422