Remove the call to isAlive() which is broken #1
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The update of glibc from 2.31 to 2.35 in Ubuntu changed the semantics of pthread_kill. It used to return an error when a dead thread exited, and now it returns 0. This new behavior is POSIX-compatible as the result of pthread_kill on a thread that died produces undefined behavior, so techincally 0 is valid result. This isAlive() will return that a dead thread is alive in the newer glibc versions. This patch removes the use of isAlive and instead uses tryjoin, which should behave correctly for dead threads.
do not spin forever if some thread is invalid or it's a EDEADLK
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The update of glibc from 2.31 to 2.35 in Ubuntu changed the semantics of pthread_kill. It used to return an error when a dead thread exited, and now it returns 0.
This new behavior is POSIX-compatible as the result of pthread_kill on a thread that died produces undefined behavior, so techincally 0 is valid result.
This isAlive() will return that a dead thread is alive in the newer glibc versions.
This patch removes the use of isAlive and instead uses tryjoin, which should behave correctly for dead threads.
bluespace-ai#17