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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.
"git@gitlab.db.in.tum.de:JakobHuber/postgres-lambda-diff.git" did not exist on "de4389712206d2686e09ad8d6dd112dc4b6c6d42"
Peter Eisentraut
authored
The code was originally written with assumption that launcher is the only process starting the worker. However that hasn't been true since commit 7c4f5240 which failed to modify the worker management code adequately. This patch adds an in_use field to the LogicalRepWorker struct to indicate whether the worker slot is being used and uses proper locking everywhere this flag is set or read. However if the parent process dies while the new worker is starting and the new worker fails to attach to shared memory, this flag would never get cleared. We solve this rare corner case by adding a sort of garbage collector for in_use slots. This uses another field in the LogicalRepWorker struct named launch_time that contains the time when the worker was started. If any request to start a new worker does not find free slot, we'll check for workers that were supposed to start but took too long to actually do so, and reuse their slot. In passing also fix possible race conditions when stopping a worker that hasn't finished starting yet. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Reported-by:Fujii Masao <masao.fujii@gmail.com>
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| .gitignore | ||
| COPYRIGHT | ||
| GNUmakefile.in | ||
| HISTORY | ||
| Makefile | ||
| README | ||
| README.git | ||
| aclocal.m4 | ||
| configure | ||
| configure.in |