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4fd1479494
This makes the curent file position and pathname visible in a generic way, so we no longer need current_walfile_name global variable or the get_current_pos() method. Since that purported to be able to fail but never actually did, this also lets us get rid of some unnecessary error-handling code. One risk of this change is that the get_current_pos() method previously cleared the error indicator, and that will no longer happen with the new approach. I looked for a way that this could cause problems and did not find one. The previous code was confused about whether "Walfile" was the implementation-dependent structure representing a WAL file or whether it was a pointer to that stucture. Some of the code used it one way, and some in the other. The compiler tolerated that because void * is interchangeable with void **, but now that Walfile is a struct, it's necessary to be consistent. Hence, some references to "Walfile" have been converted to "Walfile *". Discussion: http://postgr.es/m/CA+TgmoZS0Kw98fOoAcGz8B9iDhdqB4Be4e=vDZaJZ5A-xMYBqA@mail.gmail.com |
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| README.git | ||
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/.