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Use ProcNumbers instead of direct Latch pointers to address other procs
This is in preparation for replacing Latches with a new abstraction. That's still work in progress, but this seems a little tidier anyway, so let's get this refactoring out of the way already. Discussion: https://www.postgresql.org/message-id/391abe21-413e-4d91-a650-b663af49500c%40iki.fi
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@@ -2671,8 +2671,14 @@ XLogSetAsyncXactLSN(XLogRecPtr asyncXactLSN)
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wakeup = true;
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}
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if (wakeup && ProcGlobal->walwriterLatch)
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SetLatch(ProcGlobal->walwriterLatch);
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if (wakeup)
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{
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volatile PROC_HDR *procglobal = ProcGlobal;
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ProcNumber walwriterProc = procglobal->walwriterProc;
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if (walwriterProc != INVALID_PROC_NUMBER)
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SetLatch(&GetPGProcByNumber(walwriterProc)->procLatch);
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}
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}
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/*
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