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Replaces OSSpinLock with pthread_mutex_t #1953

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@akkrat akkrat commented Aug 24, 2022

Fixing #1785
pthread_mutex_t was chosen because

  1. it's already using on some platforms
  2. os_unfair_lock must be allocated on the heap so it couldn't be used as c++ class member (Concurrent Programming With GCD in Swift 3 or SO)

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dinhvh commented Aug 25, 2022

pthread_mutex_t is too slow.
We need to use something faster on iOS / macOS.

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akkrat commented Sep 5, 2022

libetpan uses pthread_mutex_t too
The other alternatives (such as dispatch semaphore or os_unfair_lock) are not much faster than pthread_mutex_t

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dinhvh commented Sep 5, 2022 via email

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