0fad355bec
The typical size of an LWLock is now 16 bytes even on 64-bit platforms, and the size of slock_t is now irrelevant. But pg_atomic_uint32 can (perhaps surprisingly) still be larger than 4 bytes, so there's still some marginal point to allowing LWLOCK_MINIMAL_SIZE == 64. Commit 008608b9d51061b1f598c197477b3dc7be9c4a64 made the changes that led to the need for these updates.
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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.