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The idea here is to get Windows' userspace infrastructure to allocate whatever space it needs for MapViewOfFileEx() before we release the locked-down space that we want to map the shared memory block into. This is a fairly brute-force attempt, and would likely (for example) fail with large shared memory on 32-bit Windows. We could perhaps ameliorate that by mapping only part of the shared memory block in this way, but for the moment I just want to see if this approach will fix dory's problem. Discussion: https://postgr.es/m/25495.1524517820@sss.pgh.pa.us
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/.