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Heikki Linnakangas eeeb782e60 Fix a rare race condition when commit_siblings > 0 and a transaction commits ... at the same instant as a new backend is spawned. Since CountActiveBackends() doesn't hold ProcArrayLock, it needs to be prepared for the case that a pointer at the end of the proc array is still NULL even though numProcs says it should be valid, since it doesn't hold ProcArrayLock. Backpatch to 8.1. 8.0 and earlier had this right, but it was broken in the split of PGPROC and sinval shared memory arrays. Per report and proposal by Marko Kreen.		17 years ago
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buffer	More fixes for 8.4 DTrace probes. Remove useless BUFFER_HIT/BUFFER_MISS	17 years ago
file	Don't actively violate the system limit of maximum open files (RLIMIT_NOFILE).	17 years ago
freespace	Add a new option to RestoreBkpBlocks() to indicate if a cleanup lock should	17 years ago
ipc	Fix a rare race condition when commit_siblings > 0 and a transaction commits	17 years ago
large_object	Update copyright for 2009.	17 years ago
lmgr	More fixes for 8.4 DTrace probes. Remove useless BUFFER_HIT/BUFFER_MISS	17 years ago
page	Update copyright for 2009.	17 years ago
smgr	Code review for dtrace probes added (so far) to 8.4. Adjust placement of	17 years ago
Makefile	Refactor backend makefiles to remove lots of duplicate code	18 years ago