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If you really want to run some code uninterruptibly, you’d either use an uninterruptible version of the method (which is available for some methods in the JDK), or protect the code from interruption by submitting it as a task and controlling it with a future.
Here’s how you can implement a general `doUninterruptibly` in a similar way, only using StructuredTaskScope:
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<div class=""><font face="Courier New" class=""><T> T doUninterruptibly(Callable<T> task) throws ExecutionException {</font></div>
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<font face="Courier New" class=""> boolean interrupted = false;</font>
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<div class=""><font face="Courier New" class=""> try (var s = new StructuredTaskScope.ShutdownOnSuccess<T>()) {</font></div>
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<div class=""><font face="Courier New" class=""> s.fork(task);</font></div>
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<div class=""><font face="Courier New" class=""> while (true) {</font></div>
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<div class=""><font face="Courier New" class=""> try {</font></div>
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<div class=""><font face="Courier New" class=""> return s.join().result();</font></div>
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<div class=""><font face="Courier New" class=""> } catch (InterruptedException ex) {</font></div>
<div class=""><font face="Courier New" class=""> interrupted = true;</font></div>
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<div class=""><font face="Courier New" class=""> }</font></div>
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<div class=""><font face="Courier New" class=""> } finally {</font></div>
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<font face="Courier New" class=""> if (interrupted) Thread.currentThread().interrupt();</font>
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<div class=""><font face="Courier New" class="">}</font></div>
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<div class="">On 15 Mar 2023, at 14:37, Arnaud Masson <<a href="mailto:arnaud.masson@fr.ibm.com" class="">arnaud.masson@fr.ibm.com</a>> wrote:</div>
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<span lang="EN-US" class="">Yes, that avoids problems most of the time,<o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">but what if closeStuff() could throw<span class="Apple-converted-space"> </span></span><span lang="EN-US" class="">InterruptedException?<o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">(If the thread interruption request occurs during the finally block, not during the try block.)<o:p class=""></o:p></span></div>
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thanks<o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">Arnaud<o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""><o:p class=""> </o:p></span></div>
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On 15 Mar 2023, at 14:15, Arnaud Masson <<a href="mailto:arnaud.masson@fr.ibm.com" style="color: blue; text-decoration: underline;" class="">arnaud.masson@fr.ibm.com</a>> wrote:<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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<span lang="EN-US" class="">Yes, that would be nice for finally { } blocks.</span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">A bit like what’s suggested here:<span class="apple-converted-space"> </span><a href="https://urldefense.com/v3/__https://github.com/google/guava/issues/1409*issuecomment-389469315__;Iw!!ACWV5N9M2RV99hQ!LPqV7AcWfT6m_7dfb8zJEShCUVeBOeHaNQ3vvGyWTLw6-zr7MFlMDAB_Iwdm5l7rxkvmdUjY5Gzo8W__L_H-hfPHZg$" style="color: blue; text-decoration: underline;" class=""><span style="color: rgb(5, 99, 193);" class="">https://github.com/google/guava/issues/1409#issuecomment-389469315</span></a></span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""> </span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">try {</span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""> doSomeIO(); // can throw InterruptedException</span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""> …</span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">} finally {</span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""> Uninterruptibles.runUninterruptibly(() -></span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""> closeStuff() // cannot throw InterruptedException</span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""> ) // auto rethrow (delayed) InterruptedException if needed</span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">}</span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""> </span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">What about try-with-resource?</span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""> </span><span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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thanks<span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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Arnaud<span style="font-size: 10pt;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 10pt;" class=""><o:p class=""> </o:p></span></div>
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<o:p class=""> </o:p></div>
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Methods that throw InterruptedException clear the interrupt status precisely to allow calling interruptible methods in cleanup code.<o:p class=""></o:p></div>
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