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Dependencies: Bump rayon from 1.5.3 to 1.6.1

dependabot requested to merge dependabot-cargo-rayon-1.6.1 into master

Bumps rayon from 1.5.3 to 1.6.1.

Changelog

Sourced from rayon's changelog.

Release rayon 1.6.1 (2022-12-09)

  • Simplified par_bridge to only pull one item at a time from the iterator, without batching. Threads that are waiting for iterator items will now block appropriately rather than spinning CPU. (Thanks @​njaard!)
  • Added protection against recursion in par_bridge, so iterators that also invoke rayon will not cause mutex recursion deadlocks.

Release rayon-core 1.10.1 (2022-11-18)

  • Fixed a race condition with threads going to sleep while a broadcast starts.

Release rayon 1.6.0 / rayon-core 1.10.0 (2022-11-18)

  • The minimum supported rustc is now 1.56.
  • The new IndexedParallelIterator::fold_chunks and fold_chunks_with methods work like ParallelIterator::fold and fold_with with fixed-size chunks of items. This may be useful for predictable batching performance, without the allocation overhead of IndexedParallelIterator::chunks.
  • New "broadcast" methods run a given function on all threads in the pool. These run at a sort of reduced priority after each thread has exhausted their local work queue, but before they attempt work-stealing from other threads.
    • The global broadcast function and ThreadPool::broadcast method will block until completion, returning a Vec of all return values.
    • The global spawn_broadcast function and methods on ThreadPool, Scope, and ScopeFifo will run detached, without blocking the current thread.
  • Panicking methods now use #[track_caller] to report the caller's location.
  • Fixed a truncated length in vec::Drain when given an empty range.

Contributors

Thanks to all of the contributors for this release!

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