[Pgpool-general] function save_pending_data

[Tatsuo Ishii]

> What for function save_pending_data in pool_stream.c ?.

pgpool always reads READBUFSZ bytes from socket for performance
reason. If caller of pool_read wants less than READBUFSZ and pool_read
reads more bytes than caller expetcs, data should be saved for later
use. That's the job for save_pending_data.
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Tatsuo Ishii
SRA OSS, Inc. Japan
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