Use WaitLatch to detect Postmaster death and exit. #6
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hlinnaka
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Apr 22, 2025
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| unsafe { | ||
| let mask = pg_sys::WL_EXIT_ON_PM_DEATH | pg_sys::WL_LATCH_SET; | ||
| let my_latch = &mut (*pg_sys::MyProc).procLatch as *mut pg_sys::Latch; | ||
| let events = pg_sys::WaitLatch( | ||
| my_latch, | ||
| mask as i32, | ||
| 0, | ||
| pg_sys::PG_WAIT_EXTENSION, | ||
| ); | ||
| pg_sys::ResetLatch(my_latch); | ||
|
|
||
| if (events & pg_sys::WL_EXIT_ON_PM_DEATH as i32) != 0 { | ||
| // postmaster died | ||
| pg_sys::proc_exit(1); | ||
| } | ||
| } |
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I think you can use pgrx's wait_latch function for this
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