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2021-09-26Fix potential hang when joining threads.Samuel Williams
If the thread termination invokes user code after `th->status` becomes `THREAD_KILLED`, and the user unblock function causes that `th->status` to become something else (e.g. `THREAD_RUNNING`), threads waiting in `thread_join_sleep` will hang forever. We move the unblock function call to before the thread status is updated, and allow threads to join as soon as `th->value` becomes defined. This reverts commit 6505c77501f1924571b2fe620c5c7b31ede0cd22.
2021-09-26Suppress exception report in inner threadNobuyoshi Nakada
2021-09-26Close leaked file descriptorsNobuyoshi Nakada
2021-09-26Wake up join list within thread EC context. (#4471)Samuel Williams
* Wake up join list within thread EC context. * Consume items from join list so that they are not re-executed. If `rb_fiber_scheduler_unblock` raises an exception, it can result in a segfault if `rb_threadptr_join_list_wakeup` is not within a valid EC. This change moves `rb_threadptr_join_list_wakeup` into the thread's top level EC which initially caused an infinite loop because on exception will retry. We explicitly remove items from the thread's join list to avoid this situation. * Verify the required scheduler interface. * Test several scheduler hooks methods with broken `unblock` implementation.
2021-07-25partially merge revision(s) 5f69a7f60467fa58c2f998daffab43e118bff36c: ↵nagachika
[Backport #17666] Co-authored-by: Samuel Williams <@ioquatix> https://github.com/nagachika/ruby/pull/1/commits/2cee515f024f3295945f312cb6b052f972f9c93d