[pgpool-committers: 2818] pgpool: Revert "Change implementation of serialize_accept to flock()."

[Tatsuo Ishii]

Revert "Change implementation of serialize_accept to flock()."

This reverts commit cdf459f75d234426290e8ed0affc7b1bdc81839e.

The flock() implementation works great. But the performance is not so
great. I guess this is because semaphore implementation wakes up one
waiter when the lock holder releases the lock, while flock()
implementation wakes up all process waiting for the lock.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=e1460376db13989f41e311150418d813bbcf5e2b

Modified Files
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src/include/pool.h   |    3 ++-
src/protocol/child.c |   58 ++------------------------------------------------
2 files changed, 4 insertions(+), 57 deletions(-)