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Tom Lane 2487d872e0 Create a multiplexing structure for signals to Postgres child processes. 
This patch gets us out from under the Unix limitation of two user-defined
signal types.  We already had done something similar for signals directed to
the postmaster process; this adds multiplexing for signals directed to
backends and auxiliary processes (so long as they're connected to shared
memory).

As proof of concept, replace the former usage of SIGUSR1 and SIGUSR2
for backends with use of the multiplexing mechanism.  There are still some
hard-wired definitions of SIGUSR1 and SIGUSR2 for other process types,
but getting rid of those doesn't seem interesting at the moment.

Fujii Masao
2009-07-31 20:26:23 +00:00
..
backendid.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
block.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
buf.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
buf_internals.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
buffile.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
bufmgr.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
bufpage.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
fd.h Implement prefetching via posix_fadvise() for bitmap index scans. A new 2009-01-12 05:10:45 +00:00
freespace.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
fsm_internals.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
indexfsm.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
ipc.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
item.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
itemid.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
itemptr.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
large_object.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
lmgr.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
lock.h A session that does not have any live snapshots does not have to be waited for 2009-04-04 17:40:36 +00:00
lwlock.h Remove the placeholder LWLockId in place of the removed FreeSpaceLock. 2009-03-03 08:11:24 +00:00
off.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
pg_sema.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
pg_shmem.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
pmsignal.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
pos.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00
proc.h Change the signaling of end-of-recovery. Startup process now indicates end 2009-02-23 09:28:50 +00:00
procarray.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
procsignal.h Create a multiplexing structure for signals to Postgres child processes. 2009-07-31 20:26:23 +00:00
relfilenode.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
s_lock.h Add s_lock support for SuperH architecture. 2009-07-27 05:31:05 +00:00
shmem.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
sinval.h Create a multiplexing structure for signals to Postgres child processes. 2009-07-31 20:26:23 +00:00
sinvaladt.h 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
smgr.h Fix some serious bugs in archive recovery, now that bgwriter is active 2009-06-25 21:36:00 +00:00
spin.h Update copyright for 2009. 2009-01-01 17:24:05 +00:00