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[BackendXidGetPid] only access allProcs when xid matches - Mailing list pgsql-hackers

From Junwang Zhao
Subject [BackendXidGetPid] only access allProcs when xid matches
Date
Msg-id CAEG8a3+i9gtqF65B+g_puVaCQuf0rZC-EMqMyEjGFJYOqUUWfA@mail.gmail.com
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Responses Re: [BackendXidGetPid] only access allProcs when xid matches
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In function `BackendXidGetPid`, when looping every proc's
    TransactionId, there is no need to access its PGPROC since there
    is shared memory access: `arrayP->pgprocnos[index]`.

    Though the compiler can optimize this kind of inefficiency, I
    believe we should ship with better code.


-- 
Regards
Junwang Zhao
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