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Use latch instead of select() in walreceiver

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Replace use of poll()/select() by WaitLatchOrSocket(), which is more
portable and flexible.

Also change walreceiver to use its procLatch instead of a custom latch.

From: Petr Jelinek <petr@2ndquadrant.com>
This commit is contained in:
Peter Eisentraut
2016-11-30 12:00:00 -05:00
parent b999c247a5
commit 597a87ccc9
6 changed files with 43 additions and 89 deletions
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6
src/backend/replication/walreceiverfuncs.c
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@ -64,7 +64,7 @@ WalRcvShmemInit(void)
MemSet(WalRcv, 0, WalRcvShmemSize());
WalRcv->walRcvState = WALRCV_STOPPED;
SpinLockInit(&WalRcv->mutex);
InitSharedLatch(&WalRcv->latch);
WalRcv->latch = NULL;
}
}
@ -279,8 +279,8 @@ RequestXLogStreaming(TimeLineID tli, XLogRecPtr recptr, const char *conninfo,
if (launch)
SendPostmasterSignal(PMSIGNAL_START_WALRECEIVER);
else
SetLatch(&walrcv->latch);
else if (walrcv->latch)
SetLatch(walrcv->latch);
}
/*