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f0efa5aec introduced the concept of "read-only" StringInfos which makes use of an existing, possibly not NUL terminated, buffer. Here we adjust two places that make use of StringInfos to receive data to avoid using appendBinaryStringInfo() in cases where a NUL termination character is not required. This saves a possible palloc() and saves having to needlessly memcpy() from one buffer to another. Here we adjust two places which were using appendBinaryStringInfo(). Neither of these cases seem particularly performance-critical. In the case of XLogWalRcvProcessMsg(), the appendBinaryStringInfo() was only appending 24 bytes. The change made here does mean that we can get rid of the incoming_message global variable and make that local instead. The apply_spooled_messages() case applies in logical decoding when applying (possibly large) changes which have been serialized to a file. Reviewed-by: Amit Kapila Discussion: https://postgr.es/m/CAApHDvoxYUDHwqPf-ShvchsERf1RzmkGoLwg63JNvHCkDCuyKQ@mail.gmail.com
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.