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As s_lock_test, the already existing test for spinlocks, isn't run in an automated fashion (and doesn't test a normal backend environment), adding tests that are run as part of a normal regression run is a good idea. Particularly in light of several recent and upcoming spinlock related fixes. Currently the new tests are run as part of the pre-existing test_atomic_ops() test. That perhaps can be quibbled about, but for now seems ok. The only operations that s_lock_test tests but the new tests don't are the detection of a stuck spinlock and S_LOCK_FREE (which is otherwise unused, not implemented on all platforms, and will be removed). This currently contains a test for more than INT_MAX spinlocks (only run with --disable-spinlocks), to ensure the recent commit fixing a bug with more than INT_MAX spinlock initializations is correct. That test is somewhat slow, so we might want to disable it after a few days. It might be worth retiring s_lock_test after this. The added coverage of a stuck spinlock probably isn't worth the added complexity? Author: Andres Freund Discussion: https://postgr.es/m/20200606023103.avzrctgv7476xj7i@alap3.anarazel.de |
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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/.