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Avoid PQisBusy/PQconsumeInput busy loop in case of PQisBusy returning

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false. per Tom Lane's suggestion. See:

Subject: Suggested change to pgbench
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Tatsuo Ishii <t-ishii@sra.co.jp>
Cc: pgsql-patches@postgreSQL.org
Date: Sun, 06 Oct 2002 12:37:27 -0400

for more details.
This commit is contained in:
Tatsuo Ishii 2002-10-07 05:10:02 +00:00
parent e4c2967edb
commit 9a2e9c6804
1 changed files with 19 additions and 21 deletions
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40
contrib/pgbench/pgbench.c
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@ -1,5 +1,5 @@
/*
* $Header: /cvsroot/pgsql/contrib/pgbench/pgbench.c,v 1.19 2002/09/04 20:31:08 momjian Exp $
* $Header: /cvsroot/pgsql/contrib/pgbench/pgbench.c,v 1.20 2002/10/07 05:10:02 ishii Exp $
*
* pgbench: a simple TPC-B like benchmark program for PostgreSQL
* written by Tatsuo Ishii
@ -184,17 +184,16 @@ doOne(CState * state, int n, int debug, int ttype)
{ /* are we receiver? */
if (debug)
fprintf(stderr, "client %d receiving\n", n);
while (PQisBusy(st->con) == TRUE)
{
if (!PQconsumeInput(st->con))
{ /* there's something wrong */
fprintf(stderr, "Client %d aborted in state %d. Probably the backend died while processing.\n", n, st->state);
remains--; /* I've aborted */
PQfinish(st->con);
st->con = NULL;
return;
}
if (!PQconsumeInput(st->con))
{ /* there's something wrong */
fprintf(stderr, "Client %d aborted in state %d. Probably the backend died while processing.\n", n, st->state);
remains--; /* I've aborted */
PQfinish(st->con);
st->con = NULL;
return;
}
if (PQisBusy(st->con))
return; /* don't have the whole result yet */
switch (st->state)
{
@ -367,17 +366,16 @@ doSelectOnly(CState * state, int n, int debug)
{ /* are we receiver? */
if (debug)
fprintf(stderr, "client %d receiving\n", n);
while (PQisBusy(st->con) == TRUE)
{
if (!PQconsumeInput(st->con))
{ /* there's something wrong */
fprintf(stderr, "Client %d aborted in state %d. Probably the backend died while processing.\n", n, st->state);
remains--; /* I've aborted */
PQfinish(st->con);
st->con = NULL;
return;
}
if (!PQconsumeInput(st->con))
{ /* there's something wrong */
fprintf(stderr, "Client %d aborted in state %d. Probably the backend died while processing.\n", n, st->state);
remains--; /* I've aborted */
PQfinish(st->con);
st->con = NULL;
return;
}
if (PQisBusy(st->con))
return; /* don't have the whole result yet */
switch (st->state)
{