database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-02 09:02:37 +03:00
Code Activity

Add --with-threads configure option to control threaded libpq.

Browse Source
This commit is contained in:
Bruce Momjian
2003-06-13 23:10:08 +00:00
parent 26188e8c17
commit 02d847fe9f
5 changed files with 112 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
doc/src/sgml/installation.sgml
View File

@ -1,4 +1,4 @@
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/installation.sgml,v 1.133 2003/06/11 06:56:06 momjian Exp $ -->
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/installation.sgml,v 1.134 2003/06/13 23:10:07 momjian Exp $ -->
<chapter id="installation">
<title><![%standalone-include[<productname>PostgreSQL</>]]>
@ -914,6 +914,15 @@ JAVACMD=$JAVA_HOME/bin/java
</listitem>
</varlistentry>
<varlistentry>
<term><option>--with-threads</option></term>
<listitem>
<para>
Allow separate libpq threads to safely control their private connection handles.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--without-zlib</option></term>
<listitem>

29
doc/src/sgml/libpq.sgml
View File

@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/libpq.sgml,v 1.123 2003/05/14 03:25:58 tgl Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/libpq.sgml,v 1.124 2003/06/13 23:10:07 momjian Exp $
-->
<chapter id="libpq">
@ -509,11 +509,6 @@ typedef struct
is leaked for each call to <function>PQconndefaults</function>.
</para>
<para>
In <productname>PostgreSQL</productname> versions before 7.0, <function>PQconndefaults</function> returned a pointer
to a static array, rather than a dynamically allocated array. That
was not thread-safe, so the behavior has been changed.
</para>
</listitem>
</varlistentry>
@ -2549,17 +2544,23 @@ If the permissions are less strict than this, the file will be ignored.
</indexterm>
<para>
<application>libpq</application> is thread-safe as of
<productname>PostgreSQL</productname> 7.0, so long as no two threads
attempt to manipulate the same <structname>PGconn</> object at the same
time. In particular, you cannot issue concurrent commands from different
threads through the same connection object. (If you need to run
concurrent commands, start up multiple connections.)
<application>libpq</application> is thread-safe if the library is
compiled using the <literal>--with-threads</>
<filename>configure</filename> command-line option. (You might need to
use other threading command-line options to compile your client code.)
</para>
<para>
<structname>PGresult</> objects are read-only after creation, and so can be passed around
freely between threads.
One restriction is that no two threads attempt to manipulate the same
<structname>PGconn</> object at the same time. In particular, you cannot
issue concurrent commands from different threads through the same
connection object. (If you need to run concurrent commands, start up
multiple connections.)
</para>
<para>
<structname>PGresult</> objects are read-only after creation, and so can be
passed around freely between threads.
</para>
<para>