Comments (1)
cuviper
commented on August 27, 2024
I'm going to close this as a duplicate of #592.
However, just yielding is not sufficient. If the task that is holding the lock is earlier on the same thread stack as the task that is now trying to obtain the lock, then no amount of yielding can resolve that. It's essentially an attempt at recursive locking, even thought that may be unintentionally induced by rayon's work-stealing.
There's a proposal for "blocking install" that I still need to get around to. This would give a way to better isolate work across threadpools, without work-stealing while you wait, so for example you could safely hold a lock in the caller.
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Related Issues (20)
- a broadcast that only gets executed on idle threads
- `in_place_scope` documentation is confusing/unclear HOT 14
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- A way to hook before/after job execution (and/or a way to see a number of tasks in the processing queue)
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- Add synchronization guarantees for `ParallelIterator::for_each*` HOT 1
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- [Discussion] Is it possible to impl `IntoIterator` for `ParallelIterator`? HOT 3
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