spinlock emulation: Fix bug when more than INT_MAX spinlocks are initialized.
authorAndres Freund <[email protected]>
Mon, 8 Jun 2020 22:25:49 +0000 (15:25 -0700)
committerAndres Freund <[email protected]>
Wed, 17 Jun 2020 19:51:24 +0000 (12:51 -0700)
commit660622053419fbb776c7218f2110500b3b034b35
tree2fa32850dbea9d9bffd86dbee7e6483975aa98dd
parent5771d8b690e0f1b49bf8fc7f5e5cb8880bcd5ca7
spinlock emulation: Fix bug when more than INT_MAX spinlocks are initialized.

Once the counter goes negative we ended up with spinlocks that errored
out on first use (due to check in tas_sema).

Author: Andres Freund
Reviewed-By: Robert Haas
Discussion: https://postgr.es/m/20200606023103[email protected]
Backpatch: 9.5-
src/backend/storage/lmgr/spin.c