d2733258d0
Reference count every entry and exit from the condition variable functions: cv_wait(), cv_wait_timeout(), cv_signal(), cv_broadcast(). This allows us to safely block in cv_destroy() until all consumers have been scheduled and are no longer accessing the condition variable memory. In addition poison the magic value at the start of cv_destroy() to ensure there are never any new callers after cv_destroy() is called. The consumer is responsible for ensuring this never occurs. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> |
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