c712b0d49b
ShmemRequestInternal() rejected SHMEM_ATTACH_UNKNOWN_SIZE whenever IsUnderPostmaster was false. That also rejected an after-startup attachment in a standalone backend, even if the area exists. To fix, check whether the shared memory has been initialized (ShmemIndex == NULL) rather than IsUnderPostmaster. Refactor the tests, and add more test cases for after-startup attachment, with SHMEM_ATTACH_UNKNOWN_SIZE and a mismatching size, and for this single-user case. Author: Ayush Tiwari <ayushtiwari.slg01@gmail.com> Reviewed-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com> Discusssion: https://www.postgresql.org/message-id/CAJTYsWXREGXCnWdZJsXt8pT2UY_Y2GSx+HOUu2X3s8YDCLj0_A@mail.gmail.com Backpatch-through: 19
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/.