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Change ProcSendSignal() to take pgprocno.

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Instead of referring to target backends by pid, use pgprocno.  This
means that we don't have to scan the ProcArray and we can drop some
special case code for dealing with the startup process.

Discussion: https://postgr.es/m/CA%2BhUKGLYRyDaneEwz5Uya_OgFLMx5BgJfkQSD%3Dq9HmwsfRRb-w%40mail.gmail.com
Reviewed-by: Soumyadeep Chakraborty <soumyadeep2007@gmail.com>
Reviewed-by: Ashwin Agrawal <ashwinstar@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
This commit is contained in:
Thomas Munro
2021-12-16 12:40:15 +13:00
parent bbc227e951
commit a13db0e164
8 changed files with 23 additions and 64 deletions
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src/include/storage/predicate_internals.h
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@@ -113,6 +113,7 @@ typedef struct SERIALIZABLEXACT
TransactionId xmin; /* the transaction's snapshot xmin */
uint32 flags; /* OR'd combination of values defined below */
int pid; /* pid of associated process */
int pgprocno; /* pgprocno of associated process */
} SERIALIZABLEXACT;
#define SXACT_FLAG_COMMITTED 0x00000001 /* already committed */