tree cf68445b4f64ec8221f66adf79a0b24189d197ff
parent ba2dacd276522d483a38f786cce66b16a349446b
author Jacques Pienaar <jpienaar@google.com> 1747126356 +0200
committer GitHub <noreply@github.com> 1747126356 -0700
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[lldb][plugin] Use counter directly for number of readers (#139252)

Here we were initializing & locking a shared_mutex in a thread, while
releasing it in the parent which may/often turned out to be a different
thread (shared_mutex::unlock_shared is undefined behavior if called from
a thread that doesn't hold the lock).

Switch to counter to more simply keep track of number of readers and
simply lock/unlock rather than utilizing reader mutex to verify last
freed (and so requiring this matching thread init/destroy behavior).