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Keep track of the used size of the array. That avoids looping through the whole array in a few places. It doesn't matter from a performance point of view since the array is small anyway, but this feels less surprising and is a little less code. Now that we have an explicit NumListenSockets variable that is statically initialized to 0, we don't need the loop to initialize the array. Allocate the array in PostmasterContext. The array isn't needed in child processes, so this allows reusing that memory. We could easily make the array resizable now, but we haven't heard any complaints about the current 64 sockets limit. Discussion: https://www.postgresql.org/message-id/7bb7ad65-a018-2419-742f-fa5fd877d338@iki.fi
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/.