rhtooks: multiprocessing: use class-wide lock to prevent race conditions #7411
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Use class-wide lock in the
FrozenSupportMixIn
constructor inmultiprocessing
run-time hook to prevent race conditions betweenos.putenv
andos.unsetenv
calls when processes are spawned concurrently from multiple threads. This essentially serializes process spawning and its associated environment modifications (which are done in main process and inherited by child ones).Fixes #7410.
Also get rid of redunant check for
sys.frozen
.