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Upgrade documentation connected with shared_preload_libraries et al.

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Noplace in the documentation actually defined what these variables
contain.  Define them as lists of arguments for LOAD, and improve
that command's documentation a bit.

Discussion: https://postgr.es/m/CAB-oJtxHVDc3H+Km3CjB9mY1VDzuyaVH_ZYSz7iXcRqCtb93Ew@mail.gmail.com
This commit is contained in:
Tom Lane 2017-06-20 13:39:57 -04:00
parent b710248dd3
commit ba63dbd9ed
3 changed files with 26 additions and 17 deletions
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27
doc/src/sgml/config.sgml
View File

@ -7003,12 +7003,6 @@ SET XML OPTION { DOCUMENT | CONTENT };
<literal>tcl</>, or <literal>python</>.
</para>
<para>
For each parameter, if more than one library is to be loaded, separate
their names with commas. All library names are converted to lower case
unless double-quoted.
</para>
<para>
Only shared libraries specifically intended to be used with PostgreSQL
can be loaded this way. Every PostgreSQL-supported library has
@ -7037,6 +7031,10 @@ SET XML OPTION { DOCUMENT | CONTENT };
<para>
This variable specifies one or more shared libraries that are to be
preloaded at connection start.
It contains a comma-separated list of library names, where each name
is interpreted as for the <xref linkend="SQL-LOAD"> command.
Whitespace between entries is ignored; surround a library name with
double quotes if you need to include whitespace or commas in the name.
The parameter value only takes effect at the start of the connection.
Subsequent changes have no effect. If a specified library is not
found, the connection attempt will fail.
@ -7083,10 +7081,15 @@ SET XML OPTION { DOCUMENT | CONTENT };
<listitem>
<para>
This variable specifies one or more shared libraries that are to be
preloaded at connection start. Only superusers can change this setting.
preloaded at connection start.
It contains a comma-separated list of library names, where each name
is interpreted as for the <xref linkend="SQL-LOAD"> command.
Whitespace between entries is ignored; surround a library name with
double quotes if you need to include whitespace or commas in the name.
The parameter value only takes effect at the start of the connection.
Subsequent changes have no effect. If a specified library is not
found, the connection attempt will fail.
Only superusers can change this setting.
</para>
<para>
@ -7120,9 +7123,13 @@ SET XML OPTION { DOCUMENT | CONTENT };
<listitem>
<para>
This variable specifies one or more shared libraries to be preloaded at
server start. This parameter can only be set at server
start. If a specified library is not found, the server will fail to
start.
server start.
It contains a comma-separated list of library names, where each name
is interpreted as for the <xref linkend="SQL-LOAD"> command.
Whitespace between entries is ignored; surround a library name with
double quotes if you need to include whitespace or commas in the name.
This parameter can only be set at server start. If a specified
library is not found, the server will fail to start.
</para>
<para>

5
doc/src/sgml/ref/create_function.sgml
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@ -541,8 +541,9 @@ CREATE [ OR REPLACE ] FUNCTION
dynamically loadable C language functions when the function name
in the C language source code is not the same as the name of
the SQL function. The string <replaceable
class="parameter">obj_file</replaceable> is the name of the
file containing the dynamically loadable object, and
class="parameter">obj_file</replaceable> is the name of the shared
library file containing the compiled C function, and is interpreted
as for the <xref linkend="SQL-LOAD"> command. The string
<replaceable class="parameter">link_symbol</replaceable> is the
function's link symbol, that is, the name of the function in the C
language source code. If the link symbol is omitted, it is assumed

11
doc/src/sgml/ref/load.sgml
View File

@ -38,11 +38,12 @@ LOAD '<replaceable class="PARAMETER">filename</replaceable>'
</para>
<para>
The file name is specified in the same way as for shared library
names in <xref linkend="sql-createfunction">; in particular, one
can rely on a search path and automatic addition of the system's standard
shared library file name extension. See <xref linkend="xfunc-c"> for
more information on this topic.
The library file name is typically given as just a bare file name,
which is sought in the server's library search path (set
by <xref linkend="guc-dynamic-library-path">). Alternatively it can be
given as a full path name. In either case the platform's standard shared
library file name extension may be omitted.
See <xref linkend="xfunc-c-dynload"> for more information on this topic.
</para>
<indexterm>