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Fix a typo in recent xfunc addition, do some routine SGML police work.

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This commit is contained in:
Neil Conway 2006-11-23 05:28:18 +00:00
parent 546d6848ca
commit 4ed6f6d479
1 changed files with 7 additions and 8 deletions
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15
doc/src/sgml/xfunc.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/xfunc.sgml,v 1.118 2006/11/23 03:52:05 momjian Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/xfunc.sgml,v 1.119 2006/11/23 05:28:18 neilc Exp $ -->
<sect1 id="xfunc">
<title>User-Defined Functions</title>
@ -1234,12 +1234,12 @@ PG_MODULE_MAGIC;
<para>
Optionally, a dynamically loaded file can contain initialization and
finalization functions. If the file includes a function named
<literal>_PG_init</>, that function will be called immediately after
<function>_PG_init</>, that function will be called immediately after
loading the file. The function receives no parameters and should
return void. If the file includes a function named
<literal>_PG_fini</>, that function will be called immediately before
<function>_PG_fini</>, that function will be called immediately before
unloading the file. Likewise, the function receives no parameters and
should return void. Note that <literal>_PG_fini</> will only be called
should return void. Note that <function>_PG_fini</> will only be called
during an unload of the file, not during process termination.
(Presently, an unload only happens in the context of re-loading
the file due to an explicit <command>LOAD</> command.)
@ -2921,20 +2921,19 @@ CREATE FUNCTION make_array(anyelement) RETURNS anyarray
<programlisting>
void RequestAddinShmemSpace(int size)
</programlisting>
from your <literal>_PG_init</> function.
from your <function>_PG_init</> function.
</para>
<para>
LWLocks are reserved by calling:
<programlisting>
void RequestAddinLWLocks(int n)
</programlisting>
from <literal>_PG_init</>.
from <function>_PG_init</>.
</para>
<para>
To avoid possible race-conditions, each backend should use the LWLock
<literal>AddinShmemInitLock</> when connecting to and intializing
<function>AddinShmemInitLock</> when connecting to and initializing
its allocation of shared memory, as shown here:
<programlisting>
static mystruct *ptr = NULL;