3baae90013
We're planning to merge buffer content locks into BufferDesc.state. To reduce the size of that patch, centralize calls to BufferDescriptorGetContentLock(). The biggest part of the change is in assertions, by introducing BufferIsLockedByMe[InMode]() (and removing BufferIsExclusiveLocked()). This seems like an improvement even without aforementioned plans. Additionally replace some direct calls to LWLockAcquire() with calls to LockBuffer(). Reviewed-by: Matthias van de Meent <boekewurm+postgres@gmail.com> Discussion: https://postgr.es/m/fvfmkr5kk4nyex56ejgxj3uzi63isfxovp2biecb4bspbjrze7@az2pljabhnff
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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.