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Update FAQ_DEV: elog => ereport.

This commit is contained in:
Bruce Momjian
2003-10-30 02:40:29 +00:00
parent d46f9cd3bd
commit 60b198a768
2 changed files with 21 additions and 20 deletions

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@ -12,7 +12,7 @@
<H1>Developer's Frequently Asked Questions (FAQ) for
PostgreSQL</H1>
<P>Last updated: Mon Jun 2 00:34:39 EDT 2003</P>
<P>Last updated: Wed Oct 29 21:40:18 EST 2003</P>
<P>Current maintainer: Bruce Momjian (<A href=
"mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR>
@ -61,7 +61,7 @@
should I do?<BR>
<A href="#2.5">2.5</A>) Why do we use <I>palloc</I>() and
<I>pfree</I>() to allocate memory?<BR>
<A href="#2.6">2.6</A>) What is elog()?<BR>
<A href="#2.6">2.6</A>) What is ereport()?<BR>
<A href="#2.7">2.7</A>) What is CommandCounterIncrement()?<BR>
<BR>
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memory can be allocated in. These affect when the allocated memory
is freed by the backend.</P>
<H3><A name="2.6">2.6</A>) What is elog()?</H3>
<H3><A name="2.6">2.6</A>) What is ereport()?</H3>
<P><I>elog()</I> is used to send messages to the front-end, and
<P><I>ereport()</I> is used to send messages to the front-end, and
optionally terminate the current query being processed. The first
parameter is an elog level of <I>DEBUG</I> (levels 1-5), <I>LOG,</I>
parameter is an ereport level of <I>DEBUG</I> (levels 1-5), <I>LOG,</I>
<I>INFO,</I> <I>NOTICE,</I> <I>ERROR,</I> <I>FATAL,</I> or
<I>PANIC.</I> <I>NOTICE</I> prints on the user's terminal and the
postmaster logs. <I>INFO</I> prints only to the user's terminal and
@ -845,10 +845,10 @@
from <I>postgresql.conf.</I>) <I>ERROR</I> prints in both places,
and terminates the current query, never returning from the call.
<I>FATAL</I> terminates the backend process. The remaining
parameters of <I>elog</I> are a <I>printf</I>-style set of
parameters of <I>ereport</I> are a <I>printf</I>-style set of
parameters to print.</P>
<P><I>elog(ERROR)</I> frees most memory and open file descriptors so
<P><I>ereport(ERROR)</I> frees most memory and open file descriptors so
you don't need to clean these up before the call.</P>
<H3><A name="2.7">2.7</A>) What is CommandCounterIncrement()?</H3>