RFR 10: 8184808 (process) isAlive should use pid for validity, not /proc/pid
Roger.Riggs at Oracle.com
Tue Jul 18 18:46:38 UTC 2017
Please review a fix for an intermittent failure in the ProcessHandle
that fails frequently on Solaris.
ProcessHandle.isAlive is using /proc/pid/psinfo to determine if a
process is alive and it's start time.
However, it appears that the between the process exiting and the reaping
of its status, the
psinfo file indicates the process is alive but kill(pid, 0) reports that
is is not alive.
Depending on a race, the ProcessHandler.onExit may determine the process
but later isAlive may report it is alive.
To have a consistent view of the process being alive,
ProcessHandle.isAlive in its native implementation
should use kill(pid, 0) to determine if the process is definitively
determine if the process alive.
The original issue will be kept open until it is known that it is
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