8c0d7bafad
Add general purpose chaining hash tables for DSA memory. Unlike DynaHash in shared memory mode, these hash tables can grow as required, and cope with being mapped into different addresses in different backends. There is a wide range of potential users for such a hash table, though it's very likely the interface will need to evolve as we come to understand the needs of different kinds of users. E.g support for iterators and incremental resizing is planned for later commits and the details of the callback signatures are likely to change. Author: Thomas Munro Reviewed-By: John Gorman, Andres Freund, Dilip Kumar, Robert Haas Discussion: https://postgr.es/m/CAEepm=3d8o8XdVwYT6O=bHKsKAM2pu2D6sV1S_=4d+jStVCE7w@mail.gmail.com https://postgr.es/m/CAEepm=0ZtQ-SpsgCyzzYpsXS6e=kZWqk3g5Ygn3MDV7A8dabUA@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/.