On Sun, 21 May 2023 13:52:06 GMT, Alan Bateman <al...@openjdk.org> wrote:

> This is a test only change to the unit test for the ExecutorService returned 
> by Executors.newThreadPerTaskExecutor. The tests for interrupting invokeAll 
> assume the threads started to execute the tasks do actually execute the task 
> code. The refresh in JEP 444 changed the implementation to use FutureTask, 
> and FutureTask checks the interrupt status before it executes the task code. 
> So some intermittent timeouts of the tests for interrupting invokeAll as 
> those tests were waiting for the task to complete.
> 
> The main change is that the tests for interrupting invokeAll are changed to 
> interrupt when the main thread blocks in invokeAll. They are also changed to 
> check if the task started or not. The tests for interrupting invokeAny 
> already did this, but these are changed to use the same infrastructure to 
> avoid having two styles of tests in the same source file.

Looks reasonable. Just some question about testing invokeAll/invokeAny when 
there is only one task.

test/jdk/java/util/concurrent/ThreadPerTaskExecutor/ThreadPerTaskExecutorTest.java
 line 578:

> 576:             try {
> 577:                 
> scheduleInterruptAt("java.util.concurrent.ThreadPerTaskExecutor.invokeAny");
> 578:                 executor.invokeAny(Set.of(task));

Seems strange to test invokeAny when there is only one task?

test/jdk/java/util/concurrent/ThreadPerTaskExecutor/ThreadPerTaskExecutorTest.java
 line 835:

> 833:             try {
> 834:                 
> scheduleInterruptAt("java.util.concurrent.ThreadPerTaskExecutor.invokeAll");
> 835:                 executor.invokeAll(Set.of(task));

same remark for invokeAll?

-------------

PR Review: https://git.openjdk.org/jdk/pull/14072#pullrequestreview-1436244152
PR Review Comment: https://git.openjdk.org/jdk/pull/14072#discussion_r1200271736
PR Review Comment: https://git.openjdk.org/jdk/pull/14072#discussion_r1200272685

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