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Michael Paquier 7d708093b7 Refactor creation of backup_label and backup history files 
This change simplifies some of the logic related to the generation and
creation of the backup_label and backup history files, which has become
unnecessarily complicated since the removal of the exclusive backup mode
in commit 39969e2.  The code was previously generating the contents of
these files as a string (start phase for the backup_label and stop phase
for the backup history file), one problem being that the contents of the
backup_label string were scanned to grab some of its internal contents
at the stop phase.

This commit changes the logic so as we store the data required to build
these files in an intermediate structure named BackupState.  The
backup_label file and backup history file strings are generated when
they are ready to be sent back to the client.  Both files are now
generated with the same code path.  While on it, this commit renames
some variables for clarity.

Two new files named xlogbackup.{c,h} are introduced in this commit, to
remove from xlog.c some of the logic around base backups.  Note that
more could be moved to this new set of files.

Author: Bharath Rupireddy, Michael Paquier
Reviewed-by: Fujii Masao
Discussion: https://postgr.es/m/CALj2ACXWwTDgJqCjdaPyfR7djwm6SrybGcrZyrvojzcsmt4FFw@mail.gmail.com
 		2022-09-26 11:15:47 +09:00
config meson: Add initial version of meson based build system 2022-09-21 22:37:17 -07:00
contrib Harmonize parameter names in contrib code. 2022-09-22 13:59:20 -07:00
doc Improve terminology 2022-09-23 21:18:17 -04:00
src Refactor creation of backup_label and backup history files 2022-09-26 11:15:47 +09:00
.cirrus.yml Remove uses of register due to incompatibility with C++17 and up 2022-09-24 12:08:37 -07:00
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README 

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/.