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Commit 8c0d7bafad36434cb08ac2c78e69ae72c194ca20 introduced dshash with hash and compare functions like DynaHash's, and also variants that take a user data pointer instead of size. Simplify the interface by merging them into a single pair of function pointer types that take both size and a user data pointer. Since it is anticipated that memcmp and tag_hash behavior will be a common requirement, provide wrapper functions dshash_memcmp and dshash_memhash that conform to the new function types. Author: Thomas Munro Reviewed-By: Andres Freund Discussion: https://postgr.es/m/20170823054644.efuzftxjpfi6wwqs%40alap3.anarazel.de
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/.