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006b69fd91
This commit introduces a basic facility to test SLRUs, in terms of initialization, page reads, writes, flushes, truncation and deletions, using SQL wrappers around the APIs of slru.c. This should be easily extensible at will, and it can be used as a starting point for someone willing to implement an external module that makes use of SLRUs (LWLock tranche registering and SLRU initialization particularly). As this requires a loaded library, the tests use a custom configuration file and are disabled under installcheck. Author: Aleksander Alekseev, Michael Paquier Reviewed-by: Pavel Borisov, Daniel Gustafsson, Noah Misch, Maxim Orlov Discussion: https://postgr.es/m/CAJ7c6TOFoWcHOW4BVe3BG_uikCrO9B91ayx9d6rh5JZr_tPESg@mail.gmail.com
38 lines
1.1 KiB
SQL
38 lines
1.1 KiB
SQL
CREATE EXTENSION test_slru;
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SELECT test_slru_page_exists(12345);
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SELECT test_slru_page_write(12345, 'Test SLRU');
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SELECT test_slru_page_read(12345);
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SELECT test_slru_page_exists(12345);
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-- 48 extra pages
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SELECT count(test_slru_page_write(a, 'Test SLRU'))
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FROM generate_series(12346, 12393, 1) as a;
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-- Reading page in buffer for read and write
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SELECT test_slru_page_read(12377, true);
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-- Reading page in buffer for read-only
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SELECT test_slru_page_readonly(12377);
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-- Reading page not in buffer with read-only
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SELECT test_slru_page_readonly(12346);
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-- Write all the pages in buffers
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SELECT test_slru_page_writeall();
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-- Flush the last page written out.
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SELECT test_slru_page_sync(12393);
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SELECT test_slru_page_exists(12393);
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-- Segment deletion
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SELECT test_slru_page_delete(12393);
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SELECT test_slru_page_exists(12393);
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-- Page truncation
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SELECT test_slru_page_exists(12377);
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SELECT test_slru_page_truncate(12377);
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SELECT test_slru_page_exists(12377);
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-- Full deletion
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SELECT test_slru_delete_all();
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SELECT test_slru_page_exists(12345);
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SELECT test_slru_page_exists(12377);
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SELECT test_slru_page_exists(12393);
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DROP EXTENSION test_slru;
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