unlock in diags code before writing out to syslog
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Key: TS-108
URL: https://issues.apache.org/jira/browse/TS-108
Project: Traffic Server
Issue Type: Bug
Components: Logging
Reporter: Sean Cosgrave
Priority: Minor
Original bug description from Anirban:
Currently, diags calls attain a lock on line 266 of libinktomi++/Diags.cc which
is then released on line 358 to prevent
various threads from dumping logs at the same time, thus leading to interleaved
and unreadable logs.
That makes sense in the context of stdout, stderr and Diags own fp based
logging. However, it doesnt apply to syslog
messages, since those are written out to Unix named pipes, which guarantee
integrity of the message (and order). Even
if we were using Unix Domain Sockets to write out the syslogs, that would also
ensure the integrity of the message in a
packet.
Thus we should unlock before we write out to syslog (around line# 308).
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