vxw_pt6.html

vxworks及tornado常见问题解答

Anothor solution is this program from cedilnik andrej
([e-mail]). It can be started using the command
Sync("IP-address"), for example Sync ("18.72.0.3"). Here is the program:
<a href="ntp.c">ntp.c</a>.

<p>
<hr WIDTH="60%">
<p><h3><a NAME="6.6"><center>6.6 Performance / Benchmarks</center></a></h3>
<a NAME="6.6-A"></a>

Q: What is the performance of VxWorks on my target?
<p>A: There are a number of benchmark results published by Wondriver. Ask your
FAE for more information about this. These documents include details on
context switching, interrupts etc.

<p>
<hr WIDTH="60%">

<p><h3><a NAME="6.7"><center>6.7 SNMP</center></a></h3>
<a NAME="6.7-A"></a>
Q: How do I generate the Envoy SNMP server?
<p>A: I've actually built the beast, including v3 support.
You will have to build it outside of Tornado 2.0, and
then refer to the library as an EXTRA_MODULE within Tornado.

<p>Part 1
<p>Ill assume that $SNMP is the installation directoy of the
epilogue stuff.  Some of what is listed below is identical
to section 5.2 of the getting started guide.
<ol>
<li>Copy the snark/vxworks/cfgs/wind.cfg to the $SNMP dir.</li>
<li>Edit it to make the two key changes:
<br>The first loadconfig statement in the file
<br><code>loadconfig 'vxppc' ;my system</code>
<br>The SRCDIR setting:
<br><code>equate SRCDIR 'yourdirectory to the SNMP dir' ;would be $SNMP</code></li>

<li>Now, make sure you have copied <em>$SNMP/snark/vxworks/h/snmpdLib.h</em>
to <em>$WIND_BASE/target/h</em>.  Also, replace all contents of
<em>$WIND_BASE/target/h/snmp</em> with <em>$SNMP/snark/vxworks/h/snmp</em>.</li>

<li>Run makmak in the $SNMP directory specifying this cfg file.</li>
<li>In the SNMP directory, type in "<code>make all</code>".</li>
</ol>
If you get compile errors, try defining the following environment
variables.  I set them for my NT box with Tornado under C:\Tornado:
<pre>
WIND_BASE               C:\Tornado
WIND_BASE_TYPE          x86-win32
WIND_HOST_TYPE          x86-win32
</pre>
Set these variables on an NT using the properties menu by right-mouse
clicking over your 'my computer'.  On this dialog use the environment
tab.
<br>Open up a new DOS shell and try the make all again.


<p>Part 2
<ol>
<li>Make sure you go to your BSP directory and edit config.h
as per section 5.2 to add the defines BEFORE the configAll include.</li>
<li>Fire up tornado</li>
<li>Start a new vxWorks bootable image project based on this BSP.</li>
<li>Open up the build properties and click on the MACROS tab and find
the EXTRA_MODULES.  In the value field, add the full path and name
of the snmp library.  For some reason, it has no extension.</li>
<li>Rebuild all.</li>
</ol>
That should do the trick.  Now, if you actually are able to add
a MIB to the agent let me know.  I can add a MIB, but for some
reason, none of my get/set routines ever get called.

<br>(From: Doug Dyer, [e-mail])

<p>
<hr WIDTH="50%">
<a NAME="6.7-C"></a>

<p>Q: How do I extend the Envoy SNMP agent?
<p>A: The steps to the extension of the MIB agent should be as follows:
<ol>
<li> Write your mib file say ex.mib</li>
<li> Compile it using the mibcompiler
<pre>$mibcomp -stub -start (name of the module identity in your mib file) \
 -o ex.c (list of mibs on which ex.mib depends) ex.mib</pre>

Before doing this make sure that you set your MIBCOMP environment
variable to point to the MIB search path where all your standard
MIBs are located (i.e set MIBCOMP = -l MIB-search-path)

<br>Once the <em>ex.c</em> file is created copy it to the directory
<em>...\snark\vxworks\agent</em> and modify it as per your needs.</li>

<li> Edit the file <em>makefile.cfg</em> under <em>..\snark\vxworks\agent</em>
<ul>
<li>add ex to SNMP_OBJS2 i.e
        $#equate(SNMP_OBJS2 $#objs(snmpsys mib snmptcp snmpudp saiolib ex))</li>
<li>add ex.mib to MIBSRC i.e</li>
</ul></li>
<li> Run <code>makmak</code> in the $SNMP directory specifying wind.cfg</li>
<li> Type <code>make all</code></li>

<li> You can see if you are able to get/set variables by using utilities
     like getif/snmputil.</li>
</ol>
(From: [e-mail])

<p>
<hr WIDTH="50%">
<a NAME="6.7-C"></a>

<p>Q: Where can I find some information about (free) SNMP managers?
<p>A: There are a couple.
<ul>
<li><a href="http://net-snmp.sourceforge.net/">http://net-snmp.sourceforge.net/</a>
(this was formerly ucd-snmp, a great package of tools)</li>
<li><a href="http://www.gxsnmp.org/">http://www.gxsnmp.org/</a>
This is a good general purpose manager.</li>
<li>FYI, a good place to begin:

<a href="http://www.snmpworld.com">http://www.snmpworld.com</a>
or
<a href="http://www.SNMPLink.org">http://www.SNMPLink.org</a></li>
</ul>

<br>(From: David Oberbeck, [e-mail])

<a NAME="6.7-C1"></a>
<p>Lawrence T.Hoff worked on a SNMP implementation on VxWorks. See his
remarks that he made to me:

<p>I still have the source code at this site :

<A HREF="http://pubweb.bnl.gov/people/hoff/snmp2.tar.Z">
http://pubweb.bnl.gov/people/hoff/snmp2.tar.Z</A>.

<br>It is based on public domain software from Carnegie Mellon University.
However, I have not done anything to support this code in 6 or 7
years. In the meanwhile, Wind River has released a fully supported
SNMP agent.
<br>(From: Andrew Cardoza, [e-mail])

<p>
<hr WIDTH="60%">
<p><h3><a NAME="6.8"><center>6.8 Lint</center></a></h3>
<a NAME="6.8-A"></a>

Q: I want to use PC-Lint, how do I configure it you be used with Tornado?
<p>A: We are using PC-lint 7.5 to check our VxWorks projects for two years
now, using a lint parameter file with the following contents:
<pre> -A                            /* ANSI-C checking                           */
+fdi                          /* begin include search at including file    */
+fcp                          /* use c++ not only for cpp and cxx ext.     */
+fcu                          /* character is unsigned                     */
+fva                          /* variable argument size                    */
+fwc                          /* wchar_t is built in type                  */
+ppw(option)                  /* add preprocessor word <option>            */
-si4                          /* Integers are 4 Byte long                  */
-sl4                          /* Longs are 4 Byte long                     */
-sp4                          /* Pointers are 4 Byte long                  */
-t2                           /* Tab size is 2                             */
-v                            /* turn off all verbosity messages           */

-width(0,3)                   /* Output format no breaking and indent 3    */
-hsb#3                        /* Error display format                      */
-"format=%f(%l): Error %n: %m"/* Error message format                      */



-elib(???)                    /* I can`t fix errors in library headers     */

-e537                         /* repeated include is controlled by #ifdev  */
-e716                         /* while(1) is ok!                           */
-e783                         /* file end without new line is ok           */
-e765                         /* external could be made static             */

/* NOT REFERENCED (see weak defines; check at end of project) */
-e714                         /* function not referenced                   */
-e749                         /* local enumeration constant not referenced */
-e750                         /* local macro not referenced                */
-e751                         /* local typedef not referenced              */
-e752                         /* local declarator not referenced           */
-e753                         /* local struct, union or enum tag not ref.  */
-e754                         /* local structure member not referenced     */
-e755                         /* global macro not referenced               */
-e756                         /* global typedef not referenced             */
-e757                         /* global declarator not referenced          */
-e758                         /* global struct, union or enum tag not ref. */
-e768                         /* global structure member not referenced    */
-e769                         /* global enumeration constant not ref.      */
-e1714                        /* member function not referenced            */
-e1715                        /* static member not referenced              */
-e1716                        /* virtual member function not referenced    */
-e1750                        /* local template not referenced             */
-e1755                        /* global template not referenced            */


-esym(1512, unary_function<*>)         /* from stl in file stl_function.h  */
-esym(1512, binary_function<*>)        /*            - "" -                */


-emacro(611,clearerr)         /* ignore errors in macro                    */
-emacro(666,clearerr)         /* ignore errors in macro                    */
-emacro(740,clearerr)         /* ignore errors in macro                    */

-emacro(534,putc)             /* ignore errors in macro                    */
-emacro(611,putc)             /* ignore errors in macro                    */
-emacro(666,putc)             /* ignore errors in macro                    */
-emacro(740,putc)             /* ignore errors in macro                    */

-emacro(534,putchar)          /* ignore errors in macro                    */
-emacro(611,putchar)          /* ignore errors in macro                    */
-emacro(666,putchar)          /* ignore errors in macro                    */
-emacro(734,putchar)          /* ignore errors in macro                    */
-emacro(740,putchar)          /* ignore errors in macro                    */

-emacro(534,getchar)          /* ignore errors in macro                    */
-emacro(611,getchar)          /* ignore errors in macro                    */
-emacro(666,getchar)          /* ignore errors in macro                    */
-emacro(740,getchar)          /* ignore errors in macro                    */

-emacro(611,feof)             /* ignore errors in macro                    */
-emacro(740,feof)             /* ignore errors in macro                    */

-emacro(611,ferror)           /* ignore errors in macro                    */
-emacro(740,ferror)           /* ignore errors in macro                    */

-emacro(611,fileno)           /* ignore errors in macro                    */
-emacro(613,fileno)           /* ignore errors in macro                    */
-emacro(666,fileno)           /* ignore errors in macro                    */
-emacro(740,fileno)           /* ignore errors in macro                    */

-emacro(611,__sfileno)        /* ignore errors in macro                    */
-emacro(613,__sfileno)        /* ignore errors in macro                    */
-emacro(666,__sfileno)        /* ignore errors in macro                    */
-emacro(740,__sfileno)        /* ignore errors in macro                    */

-emacro(  26,va_start)        /* ignore errors in macro                    */
-emacro( 522,va_start)        /* ignore errors in macro                    */
-emacro( 534,va_start)        /* ignore errors in macro                    */
-emacro( 746,va_start)        /* ignore errors in macro                    */
-emacro(1055,va_start)        /* ignore errors in macro                    */


/*
**  Ignore these constructs..
*/
-d__extension__()             /* for va_xxx macros                         */
-d__attribute__=;             /* from stl in file exception part one       */
-d((__noreturn__))=;          /*          - "" -            part two       */
-d_IH=
-d_SWI=
-d_TRAP()=
-d_SPL()=
-d_GPL()=

/*  The following functions exhibit variable return modes.
**  That is, they may equally-usefully be called for a value
**  as called just for their effects.  Accordingly we inhibit
**  Warning 534 for these functions.
**  Feel free to add to or subtract from this list.
*/
-esym(534,close,creat,fclose,fprintf,fputc)
-esym(534,fputs,fscanf,fseek,fwrite,lseek,memcpy,memmove,memset)
-esym(534,printf,puts,scanf,sprintf,sscanf,strcat,strcpy)
-esym(534,strncat,strncpy,unlink,write)
-esym(534,cprintf,CTerminalIO::cprintf,printErr,xfclose)
</pre>

The important line is