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Commita7800cf

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injection_points: Add basic isolation test
This test can act as a template when implementing an isolation test withinjection points, and tracks in a much simpler way some of the behaviorsimplied in the existing isolation test "inplace" that has been added inc35f419. Particularly, a detach does not affect a backend wait; await needs to be interrupted by a wakeup.Reviewed-by: Bertrand DrouvotDiscussion:https://postgr.es/m/ZxGTONm_ctQz--io@paquier.xyz
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4 files changed

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4 files changed

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‎src/test/modules/injection_points/Makefile

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@@ -13,7 +13,7 @@ PGFILEDESC = "injection_points - facility for injection points"
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REGRESS = injection_points reindex_conc
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REGRESS_OPTS = --dlpath=$(top_builddir)/src/test/regress
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ISOLATION = inplace
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ISOLATION =basicinplace
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TAP_TESTS = 1
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Parsed test spec with 2 sessions
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starting permutation: wait1 wakeup2 detach2
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injection_points_attach
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-----------------------
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(1 row)
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step wait1: SELECT injection_points_run('injection-points-wait'); <waiting ...>
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step wakeup2: SELECT injection_points_wakeup('injection-points-wait');
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injection_points_wakeup
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-----------------------
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(1 row)
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step wait1: <... completed>
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injection_points_run
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--------------------
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(1 row)
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step detach2: SELECT injection_points_detach('injection-points-wait');
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injection_points_detach
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-----------------------
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(1 row)
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starting permutation: wait1 detach2 wakeup2
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injection_points_attach
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-----------------------
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(1 row)
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step wait1: SELECT injection_points_run('injection-points-wait'); <waiting ...>
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step detach2: SELECT injection_points_detach('injection-points-wait');
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injection_points_detach
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-----------------------
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(1 row)
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step wakeup2: SELECT injection_points_wakeup('injection-points-wait');
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injection_points_wakeup
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-----------------------
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(1 row)
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step wait1: <... completed>
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injection_points_run
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--------------------
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(1 row)
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starting permutation: detach2 wait1 wakeup2
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injection_points_attach
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-----------------------
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(1 row)
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step detach2: SELECT injection_points_detach('injection-points-wait');
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injection_points_detach
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-----------------------
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(1 row)
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step wait1: SELECT injection_points_run('injection-points-wait');
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injection_points_run
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--------------------
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(1 row)
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step wakeup2: SELECT injection_points_wakeup('injection-points-wait');
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ERROR: could not find injection point injection-points-wait to wake up

‎src/test/modules/injection_points/meson.build

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@@ -42,6 +42,7 @@ tests += {
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},
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'isolation': {
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'specs': [
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'basic',
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'inplace',
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],
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},
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# Basic isolation test for injection points.
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#
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# This checks the interactions between wakeup, wait and detach.
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# Feel free to use it as a template when implementing an isolation
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# test with injection points.
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setup
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{
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CREATEEXTENSIONinjection_points;
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}
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teardown
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{
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DROPEXTENSIONinjection_points;
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}
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# Wait happens in the first session, wakeup in the second session.
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sessions1
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setup{
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SELECTinjection_points_set_local();
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SELECTinjection_points_attach('injection-points-wait','wait');
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}
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stepwait1{SELECTinjection_points_run('injection-points-wait');}
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sessions2
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stepwakeup2{SELECTinjection_points_wakeup('injection-points-wait');}
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stepdetach2{SELECTinjection_points_detach('injection-points-wait');}
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# Detach after wait and wakeup.
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permutationwait1wakeup2detach2
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# Detach before wakeup. s1 waits until wakeup, ignores the detach.
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permutationwait1detach2wakeup2
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# Detach before wait does not cause a wait, wakeup produces an error.
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permutationdetach2wait1wakeup2

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