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This code is intended as a demonstration of how the dynamic shared memory and dynamic background worker facilities can be used to establish a group of coooperating processes which can coordinate their activities using the shared memory message queue facility. By itself, the code does nothing particularly interesting: it simply allows messages to be passed through a loop of workers and back to the original process. But it's a useful unit test, in addition to its demonstration value.
19 lines
564 B
Plaintext
19 lines
564 B
Plaintext
CREATE EXTENSION test_shm_mq;
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--
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-- These tests don't produce any interesting output. We're checking that
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-- the operations complete without crashing or hanging and that none of their
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-- internal sanity tests fail.
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--
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SELECT test_shm_mq(32768, (select string_agg(chr(32+(random()*96)::int), '') from generate_series(1,400)), 10000, 1);
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test_shm_mq
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-------------
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(1 row)
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SELECT test_shm_mq_pipelined(16384, (select string_agg(chr(32+(random()*96)::int), '') from generate_series(1,270000)), 200, 3);
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test_shm_mq_pipelined
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-----------------------
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(1 row)
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