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<HTML>
<HEAD>
<META NAME="GENERATOR" CONTENT="Adobe PageMill 2.0 Mac">
<TITLE>Options for TAO Components</TITLE>
</HEAD>
<BODY text = "#000000"
link="#000fff"
vlink="#ff0f0f"
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<HR><P>
<H3 ALIGN=CENTER>Options for TAO Components</H3>
<H3>Overview</H3>
<blockquote>
<P>Certain components in TAO such as the ORB Core or Object Adapter
can be tuned by users by providing value for options or environment
variables to them. These options are commonly specified as (1)
environment variables or (2) strings passed on the command-line. They
are generally passed to component initialization methods for
consumption.</P>
<P><EM>Programmer's Note:</EM> the internal structure for options is
the traditional <CODE>argc</CODE>/<CODE>argv</CODE> vector of strings
style popularized by C and Unix. By convention, an initialization
method will consume, <EM>i.e.</EM>, remove from the vector, any
options that it recognizes.</P> </blockquote>
<HR><P>
<H3>Environment Variables</H3>
The following environment variables are supported by TAO:
<BLOCKQUOTE>
<P><TABLE BORDER="2" CELLSPACING="2" CELLPADDING="0" >
<TR>
<TH>Environment Variable</TH>
<TH>Description</TH></TR>
<TR>
<TD><CODE>NameServiceIOR</CODE> <EM>which</EM></TD>
<TD>
Specifies which IOR the Naming Service is listening on.
</TD></TR>
<TR>
<TD><CODE>NameServicePort</CODE> <EM>which</EM></TD>
<TD>
Specifies which port the Naming Service is listening on.
</TD></TR>
<TR>
<TD><CODE>TradingServiceIOR</CODE> <EM>which</EM></TD>
<TD>
Specifies which IOR the Trading Service is listening on.
</TD></TR>
<TR>
<TD><CODE>TradingServicePort</CODE> <EM>which</EM></TD>
<TD>
Specifies which port the Trading Service is listening on.
</TD></TR>
<TR>
<TD><CODE>TAO_ORB_DEBUG</CODE> <EM>which</EM></TD>
<TD>
Enables TAO debugging mode.
</TD></TR>
</TABLE>
</P>
</BLOCKQUOTE>
<HR><P>
<H3>Types of Options</H3>
<blockquote>
<P>The following components can be tuned via options:</P>
<UL>
<LI><A HREF="#ORB"><CODE>CORBA::ORB</CODE></A>
<LI><A HREF="#POA"><CODE>CORBA::POA</CODE></A>
<LI><A HREF="#ResourceFactory"><CODE>TAO_Resource_Factory</CODE></A>
<LI><A HREF="#DefaultServer"><CODE>TAO_Default_Server_Strategy_Factory</CODE></A>
<LI><A HREF="#DefaultClient" TARGET="_top"><CODE>TAO_Default_Client_Strategy_Factory</CODE></A>
</UL>
</blockquote>
<blockquote>
<H3><CODE>CORBA::ORB</CODE><A NAME="ORB"></A></H3>
<blockquote>
<P><TABLE BORDER="2" CELLSPACING="2" CELLPADDING=
"0">
<TR>
<TH>Option</TH>
<TH>Description</TH></TR>
<!-- <TR NAME="ORBsvcconf"> -->
<TD><CODE>-ORBsvcconf</CODE> <EM>config file name</EM></TD>
<TD>Specifies the name of the file from which it will read dynamic service configuration
directives <EM>ala</EM> ACE's Service Configurator.</TD></TR>
<TD><CODE>-ORBsvcconfdirective</CODE> <EM>directivestring</EM></TD>
<TD>Specifies a service configuration
directive, which is passed to ACE's Service Configurator.</TD></TR>
<TR>
<TD><CODE>-ORBdaemon</CODE></TD>
<TD>Specifies that the ORB should <I>daemonize</I> itself.</TD></TR>
<TR>
<TD><CODE>-ORBdebug</CODE></TD>
<TD>Turns on the output of debugging messages within ACE's Service Configurator
componentry.</TD></TR>
<TR>
<TD><CODE>-ORBhost</CODE> <EM>hostname</EM></TD>
<TD><a name="-ORBhost"></a>Tells the Object Adapter to listen for requests on the interface associated
with the host named <I><EM>hostname</EM></I>.</TD></TR>
<TR>
<TD><CODE>-ORBport</CODE> <EM>portspec</EM></TD>
<TD>Tells the Object Adapter to listen for requests on the port specified by
<I><EM>portspec</EM></I>, which can be a name as found in <TT>/etc/services</TT>
or a number. The default is <TT>10013</TT>.</TD></TR>
<TR>
<TD><CODE>-ORBobjrefstyle</CODE> <EM>which</EM></TD>
<TD>Specifies the user-visible style of object references. The range of values
is <CODE>IOR</CODE>, which is the traditional nonsensical object reference,
or <CODE>URL</CODE>, which looks more like a URL.</TD></TR>
<TR>
<TD><CODE>-ORBobjdemux</CODE> <EM>demux_method</EM></TD>
<TD>Specifies the method used to demultiplex to an object. The range of values
is <CODE>dynamic</CODE>, <CODE>linear</CODE>, <CODE>active</CODE>, or <CODE>user</CODE>.</TD></TR>
<TR>
<TD><CODE>-ORBtablesize</CODE> <EM>object table size</EM></TD>
<TD>Specifies the size of the object table as a positive, non-zero integer.
If not specified, the default is <TT>64</TT>.</TD></TR>
<TR>
<TD><CODE>-ORBrcvsock</CODE> <EM>receive buffer size</EM></TD>
<TD><A NAME="-ORBrcvsock"></a>Specify the size of the socket receive buffer as a positive, non-zero integer.
If not specified, the system-dependent default is used.</TD></TR>
<TR>
<TD><CODE>-ORBsndsock</CODE> <EM>send buffer size</EM></TD>
<TD><A NAME="-ORBsndsock"></a>Specify the size of the socket send buffer as a positive, non-zero integer.
If not specified, the system-dependent default is used.</TD></TR>
<TR>
<TD><CODE>-ORBnameserviceport</CODE> <EM>portspec</EM></TD>
<TD>Specifies which port the Naming Service is listening on.</TD></TR>
<TR>
<TD><CODE>-ORBnameserviceior</CODE> <EM>ior</EM></TD>
<TD>Specifies the IOR for the Naming Service.</TD></TR>
<TR>
<TD><CODE>-ORBcollocation</CODE> <EM>yes/no</EM></TD>
<TD>Specifies the use of collocation object optimization. Default is yes.</TD></TR>
<TR>
<TD><CODE>-ORBpreconnect</CODE> <EM>host</EM><STRONG>:</STRONG><EM>port</em>[<STRONG>,</STRONG><EM>host</EM><STRONG>:</STRONG><EM>port</em>...]</TD>
<TD><A name="-ORBpreconnect"></a>Pre-establishes a blocking connection to each listed
<em>host</em>:<em>port</em> combination. If a connection cannot
be established, a warning is announced and it continues with the
next listed. Listing the same combination multiple times will
properly establish multiple connections to that endpoint.</TD></TR>
<TR>
<TD><CODE>-ORBCDRtradeoff</CODE> <EM>maxsize</EM></TD>
<TD><A name="-ORBCDRtradeoff"></a>Control the strategy to tradeoff
between copy vs no copy marshalling of octet sequences.
If an octet sequence is smaller than <EM>maxsize</EM> and the current
message block contains enough space for it the octet sequence is
copied instead of appended to the CDR stream.</TD></TR>
<TR>
<TD><CODE>-ORBiioplite</CODE></TD>
<TD><A name="-ORBiioplite"></a>Enable a lightweight version of the
IIOP protocol. This protocol removes some of the fields in
the GIOP and the Request header. It only works on
homogenous environments..</TD></TR>
<TR>
<TD><CODE>-ORBdotteddecimaladdresses</CODE> <EM>boolean (0 / 1)</EM></TD>
<TD><A name="-ORBdotteddecimaladdresses"></a> Use the dotted decimal
notation for addresses.</TD></TR>
</TABLE>
</P>
</blockquote>
<H3><CODE>CORBA::POA</CODE><A NAME="POA"></A></H3>
<blockquote>
<P><TABLE BORDER="2" CELLSPACING="2" CELLPADDING="0">
<TR>
<TH>Option</TH>
<TH>Description</TH></TR>
<TR>
<TD><CODE>-OAid</CODE> <EM>OA Identifier</EM></TD>
<TD>Associates <I><EM>OA Identifier</EM></I> with the Object Adapter.</TD></TR>
</TABLE>
</P>
</blockquote>
<H3><CODE>TAO_Resource_Factory</CODE><A NAME="ResourceFactory"></A></H3>
<blockquote>
<P><TABLE BORDER="2" CELLSPACING="2" CELLPADDING="0">
<TR>
<TH>Option</TH>
<TH>Description</TH></TR>
<TR>
<TD><CODE>-ORBresources</CODE> <EM>which</EM></TD>
<TD>Specify whether each thread uses a global
(<em>which</em> = <code>global</code>) or a thread-specific
(<em>which</em> = <code>tss</code>) instance for the resources it returns.</TD></TR>
<TR>
<TD><CODE>-ORBpoa</CODE> <EM>which</EM></TD>
<TD><a name="-ORBpoa"></a>Specify whether each thread uses a global
(<em>which</em> = <code>global</code>) or a thread-specific
(<em>which</em> = <code>tss</code>) instance for the Root POA.</TD></TR>
<TR>
<TD><CODE>-ORBreactorlock</CODE> <EM>which</EM></TD>
<TD><a name="-ORBcoltable"></a>Specify whether the ORB reactor is thread-safe
(<em>which</em> = <code>token</code>) or not
(<em>which</em> = <code>null</code>). Default is <code>token</code></TD></TR>
<TR>
<TD><CODE>-ORBcoltable</CODE> <EM>which</EM></TD>
<TD><a name="-ORBcoltable"></a>Specify whether each ORB uses a global
(<em>which</em> = <code>global</code>) or a per-ORB
(<em>which</em> = <code>orb</code>) collocation table.</TD></TR>
<TR>
<TD><CODE>-ORBinputcdrallocator</CODE> <EM>which</EM></TD>
<TD><a name="-ORBinputcdrallocator"></a>
Specify whether the ORB uses a global
(<em>which</em> = <code>global</code>)
or a per-thread (<em>which</em> = <code>tss</code>)
allocator for the incoming CDR buffers.
The default is <CODE>tss</CODE> and should give the
optimal performance;
unless the user takes advantage of the features in TAO
to keep the CDR stream buffer after the upcall.
</TD></TR>
</TABLE>
</P>
</blockquote>
<H3><CODE>TAO_Default_Server_Strategy_Factory</CODE><A NAME="DefaultServer"></A></H3>
<blockquote>
<P><TABLE BORDER="2" CELLSPACING="2" CELLPADDING="0" >
<TR>
<TH>Option</TH>
<TH>Description</TH></TR>
<TR>
<TD><CODE>-ORBconcurrency</CODE> <EM>which</EM></TD>
<TD>Specify which concurrency strategy to use. Range of values is <code>reactive</code>
for a purely Reactor-driven concurrency strategy or
<code>thread-per-connection</code> for creating a new thread to service each connection.</TD></TR>
<TR>
<TD><CODE>-ORBtablesize</CODE> <EM>object table size</EM></TD>
<TD>Specify the size of the object table. If not specified, the default value
is 64.</TD></TR>
<TR>
<TD><CODE>-ORBdemuxstrategy</CODE> <EM>demultiplexing strategy</EM></TD>
<TD>Specify the demultiplexing lookup strategy. The <EM>demultiplexing strategy</EM>
can be one of <CODE>dynamic</CODE>, <CODE>linear</CODE>, <CODE>active</CODE>,
or <CODE>user</CODE>.</TD></TR>
<TR>
<TD><CODE>-ORBthreadflags</CODE> <EM>thread flags</EM></TD>
<TD>Specify the flags used for thread creation. Flags can be any logical-OR
combination of <CODE>THR_DETACHED</CODE>, <CODE>THR_BOUND</CODE>, <CODE>THR_NEW_LWP</CODE>,
<CODE>THE_SUSPENDED</CODE>.</TD></TR>
<TR>
<TD><CODE>-ORBpoalock</CODE> <EM>lock type</EM></TD>
<TD><a name="-ORBpoalock"></a>Specify the type of lock to be used for
POA accesses. Possible values for <em>lock type</em> are
<code>thread</code>, which specifies that an inter-thread mutex is
used to guarantee exclusive acccess, and <code>null</code>, which
specifies that no locking be performed. The default is
<code>thread</code>.</TD></TR>
<TR>
<TD><CODE>-ORBcoltbllock</CODE> <EM>lock type</EM></TD>
<TD><a name="-ORBcoltbllock"></a>Specify the type of lock to be used for
the global collocation table. Possible values for <em>lock type</em> are
<code>thread</code>, which specifies that an inter-thread mutex is
used to guarantee exclusive acccess, and <code>null</code>, which
specifies that no locking be performed. The default is
<code>thread</code>.</TD></TR>
<TR>
<TD><CODE>-ORBconnectorlock</CODE> <EM>lock type</EM></TD> <TD><a
name="-ORBconnectorlock"></a>Specify the type of lock to be used by
the connector. Possible values for <em>lock type</em> are
<code>thread</code>, which specifies that an inter-thread mutex is
used to guarantee exclusive acccess, and <code>null</code>, which
specifies that no locking be performed. The default is
<code>thread</code>.</TD></TR>
<TR>
<TD><CODE>-ORBpoamgrlock</CODE> <EM>lock type</EM></TD>
<TD><a name="-ORBpoamgrlock"></a>Specify the type of lock to be used for
POA Manager accesses. Possible values for <em>lock type</em> are
<code>thread</code>, which specifies that an inter-thread mutex is
used to guarantee exclusive acccess, and <code>null</code>, which
specifies that no locking be performed. The default is
<code>null</code>.</TD></TR>
</TABLE>
</P>
</blockquote>
<H3><CODE>TAO_Default_Client_Strategy_Factory</CODE><A NAME="DefaultClient"></A></H3>
<BLOCKQUOTE>
<P><TABLE BORDER="2" CELLSPACING="2" CELLPADDING="0" >
<TR>
<TH>Option</TH>
<TH>Description</TH></TR>
<TR>
<TD><CODE>-ORBiiopprofilelock</CODE> <EM>which</EM></TD>
<TD>
Specify, whether to use a lock for accessing the IIOP Profile or not.
Default is <code>thread</code>, which means that a lock is used. The
second option is <code>null</code>, which means a null lock is used.
This makes sense in case of optiziations and is allowed when
no forwarding is used or only a single threaded client.
</TD></TR>
<TR>
<TD><CODE>-ORBclientconnectionhandler</CODE> <EM>MT / ST</EM></TD>
<TD><A name="-ORBclientconnectionhandler"></a> ST means use the
single-threaded client connection handler and MT means use the
multi-threaded client connection handler .</TD></TR>
</TABLE>
</P>
</BLOCKQUOTE>
</blockquote>
<P><HR><P>
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