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Robert Haas 001a573a20 Allow on-detach callbacks for dynamic shared memory segments. ... Just as backends must clean up their shared memory state (releasing lwlocks, buffer pins, etc.) before exiting, they must also perform any similar cleanups related to dynamic shared memory segments they have mapped before unmapping those segments. So add a mechanism to ensure that. Existing on_shmem_exit hooks include both "user level" cleanup such as transaction abort and removal of leftover temporary relations and also "low level" cleanup that forcibly released leftover shared memory resources. On-detach callbacks should run after the first group but before the second group, so create a new before_shmem_exit function for registering the early callbacks and keep on_shmem_exit for the regular callbacks. (An earlier draft of this patch added an additional argument to on_shmem_exit, but that had a much larger footprint and probably a substantially higher risk of breaking third party code for no real gain.) Patch by me, reviewed by KaiGai Kohei and Andres Freund.		12 years ago
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backendid.h	Update copyrights for 2013	13 years ago
barrier.h	Fix a few problems in barrier.h.	13 years ago
block.h	Update copyrights for 2013	13 years ago
buf.h	Update copyrights for 2013	13 years ago
buf_internals.h	Update copyrights for 2013	13 years ago
buffile.h	Update copyrights for 2013	13 years ago
bufmgr.h	Add buffer_std flag to MarkBufferDirtyHint().	13 years ago
bufpage.h	pgindent run for release 9.3	13 years ago
checksum.h	Refactor checksumming code to make it easier to use externally.	13 years ago
checksum_impl.h	Fix cpluspluscheck in checksum code	13 years ago
copydir.h	Update copyrights for 2013	13 years ago
dsm.h	Allow on-detach callbacks for dynamic shared memory segments.	12 years ago
dsm_impl.h	Modify dynamic shared memory code to use Size rather than uint64.	12 years ago
fd.h	Expose fsync_fname as a public API.	12 years ago
freespace.h	Update copyrights for 2013	13 years ago
fsm_internals.h	Update copyrights for 2013	13 years ago
indexfsm.h	Update copyrights for 2013	13 years ago
ipc.h	Allow on-detach callbacks for dynamic shared memory segments.	12 years ago
item.h	Update copyrights for 2013	13 years ago
itemid.h	Update copyrights for 2013	13 years ago
itemptr.h	Update copyrights for 2013	13 years ago
large_object.h	pgindent run for release 9.3	13 years ago
latch.h	Update copyrights for 2013	13 years ago
lmgr.h	Add WaitForLockers in lmgr, refactoring index.c code	12 years ago
lock.h	Fix stale-pointer problem in fast-path locking logic.	12 years ago
lwlock.h	Add ALTER SYSTEM command to edit the server configuration file.	12 years ago
off.h	Update copyrights for 2013	13 years ago
pg_sema.h	Update copyrights for 2013	13 years ago
pg_shmem.h	Update copyrights for 2013	13 years ago
pmsignal.h	Allow background workers to be started dynamically.	13 years ago
pos.h	Update copyrights for 2013	13 years ago
predicate.h	Update copyrights for 2013	13 years ago
predicate_internals.h	Eliminate xmin from hash tag for predicate locks on heap tuples.	12 years ago
proc.h	Add lock_timeout configuration parameter.	13 years ago
procarray.h	Ensure no xid gaps during Hot Standby startup	13 years ago
procsignal.h	Allow discovery of whether a dynamic background worker is running.	13 years ago
reinit.h	Update copyrights for 2013	13 years ago
relfilenode.h	Update obsolete comment	12 years ago
s_lock.h	Remove IRIX port.	12 years ago
shmem.h	Update copyrights for 2013	13 years ago
sinval.h	Use an MVCC snapshot, rather than SnapshotNow, for catalog scans.	13 years ago
sinvaladt.h	Update copyrights for 2013	13 years ago
smgr.h	Accelerate end-of-transaction dropping of relations	13 years ago
spin.h	Update copyrights for 2013	13 years ago
standby.h	pgindent run for release 9.3	13 years ago