mirrors/postgres
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Minor repairs of markup.

Browse Source
This commit is contained in:
Thomas G. Lockhart 1999-10-09 02:26:52 +00:00
parent b8c3226da2
commit fc32c709b4
1 changed files with 15 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
doc/src/sgml/dfunc.sgml
View File

@ -1,6 +1,8 @@
<chapter id="dfunc">
<title id="dfunc-title">Linking Dynamically-Loaded Functions</title>
<para>
<!--
.SH "Compiling Dynamically-Loaded C Functions"
.PP
@ -100,19 +102,23 @@ You should look at the Postgres User's Manual for an explanation of this
procedure.
-->
<para>
After you have created and registered a user-defined
function, your work is essentially done. <productname>Postgres</productname>,
however, must load the object code (e.g., a <filename>.o</filename> file, or
function, your work is essentially done.
<productname>Postgres</productname>,
however, must load the object code
(e.g., a <literal>.o</literal> file, or
a shared library) that implements your function. As
previously mentioned, <productname>Postgres</productname> loads your code at
previously mentioned, <productname>Postgres</productname>
loads your code at
runtime, as required. In order to allow your code to be
dynamically loaded, you may have to compile and
link-edit it in a special way. This section briefly
describes how to perform the compilation and
link-editing required before you can load your user-defined
functions into a running <productname>Postgres</productname> server. Note that
functions into a running <productname>Postgres</productname> server.
Note that
this process has changed as of Version 4.2.
</para>
<!--
<tip>
@ -123,7 +129,8 @@ procedure.
and alignment of executable instructions within memory, etc.
on the part of the person writing the dynamic loader. Such
loaders tended to be slow and buggy. As of Version 4.2, the
<productname>Postgres</productname> dynamic loading mechanism has been rewritten to use
<productname>Postgres</productname> dynamic loading mechanism
has been rewritten to use
the dynamic loading mechanism provided by the operating
system. This approach is generally faster, more reliable and
more portable than our previous dynamic loading mechanism.
@ -131,7 +138,8 @@ procedure.
Unix use a dynamic loading mechanism to implement shared
libraries and must therefore provide a fast and reliable
mechanism. On the other hand, the object file must be
postprocessed a bit before it can be loaded into <productname>Postgres</productname>. We
postprocessed a bit before it can be loaded into
<productname>Postgres</productname>. We
hope that the large increase in speed and reliability will
make up for the slight decrease in convenience.
</para>