Nabble - Network Simulator ns-2

Re: Assistance in compiling AODV

2009-11-12T14:25:19Z

> > ----- Original Message -----
> > From: Larry Morris <morrila@...>
> > Date: Wednesday, November 4, 2009 10:10 am
> > Subject: Re: Assistance in compiling AODV
> > To: ns-users@...
> > Cc: Larry Morris <morrila@...>
> >
> > > Has anyone came accross this problem before? Larry Morris
> > >
> > > ----- Original Message -----
> > > From: Larry Morris<morrila@...>
> > > Date: Tuesday, November 3, 2009 2:23 am
> > > Subject: Re: Assistance in compiling AODV
> > > To: ns-users@...
> > >
> > > > I have reviewed the archives
> > > >
> > > > ----- Original Message -----
> > > > From: Larry Morris<morrila@...>
> > > > Date: Tuesday, November 3, 2009 2:15 am
> > > > Subject: Assistance in compiling AODV
> > > > To: ns-users@...
> > > >
> > > > > I have checked the archives... i have tried make clean ->
> > make;
> > > > and
> > > > > make depend -> make... but all i get is a list of errors...
> > > > >
> > > > > I am using NS 2-34 on cygwin. I have modified energy-
> > model.h,
> > > > > energy-model.cc and aodv.cc to include the energy-model. I
> > > have
> > > > > been trying exhastedly to compile my changes.
> > > > >
> > > > > I have resorted to a third party application Visual C++
> 2008
> > > > > Express Edition to try and compile the aodv files and thier
> > > > > associated links. Currently I am down to 355 errors and 35
> > > > > warnings in the following 12 files: reent.h, rpcdce.h,
> > > > rpcdcep.h,
> > > > > shellapi.h, stdarg.h, stdio.h, tclDecls.h, wchar.h,
> > winbase.h,
> > > > > winnt.h, winsock2.h, and winuser.h.
> > > > >
> > > > > I have searched the internet and other documentation and
> the
> > > > files
> > > > > dont seem to have any errors.
> > > > >
> > > > > the 355 errors and 35 warnings are all repetitions of the
> > > > following
> > > > > 26 errors/warnings:
> > > > > warning C4103: 'c:\cygwin\usr\include\w32api\winnt.h' :
> > > alignment
> > > > > changed after including header, may be due to missing
> #pragma
> > > > > pack(pop)warning C4068: unknown pragma
> > > > > fatal error C1021: invalid preprocessor command 'warning'
> > > > > error C4430: missing type specifier - int assumed. Note:
> C++
> > > does
> > > > > not support default-int
> > > > > error C3646: 'I_RpcAllocate' : unknown override specifier
> > > > > error C2378: '__gnuc_va_list' : redefinition; symbol cannot
> > be
> > > > > overloaded with a typedef
> > > > > error C2371: 'size_t' : redefinition; different basic types
> > > > > error C2146: syntax error : missing ';' before identifier
> > > 'va_list'> > error C2146: syntax error : missing ';' before
> > > identifier
> > > > 'mbstate_t'> error C2146: syntax error : missing ';' before
> > > > identifier
> > > > > '_wctomb_state'error C2146: syntax error : missing ';'
> before
> > > > > identifier '_wcsrtombs_state'
> > > > > error C2146: syntax error : missing ';' before identifier
> > > > > '_wcrtomb_state'error C2146: syntax error : missing ';'
> > before
> > > > > identifier '_mbtowc_state'
> > > > > error C2146: syntax error : missing ';' before identifier
> > > > > '_mbsrtowcs_state'error C2146: syntax error : missing ';'
> > > before
> > > > > identifier '_mbrtowc_state'
> > > > > error C2146: syntax error : missing ';' before identifier
> > > > > '_mbrlen_state'error C2146: syntax error : missing ';'
> before
> > > > > identifier '__gnuc_va_list'
> > > > > error C2146: syntax error : missing ';' before identifier
> > > > '__getline'> error C2146: syntax error : missing ';' before
> > > > identifier '__getdelim'
> > > > > error C2144: syntax error : 'void' should be preceded by ';'
> > > > > error C2144: syntax error : 'unsigned __int64' should be
> > > preceded
> > > > > by ';'
> > > > > error C2091: function returns function
> > > > > error C2086: 'int ssize_t' : redefinition
> > > > > error C2086: 'int DECLSPEC_NORETURN' : redefinition
> > > > > error C2086: 'int
> > > > >
> > > >
> > >
> >
> _reent::$UnnamedClass$0xa559df9d$1$::$UnnamedClass$0xa559df9d$2$::_mbstate_t' : redefinition
> > > > > error C2061: syntax error : identifier 'va_list'
> > > > >
> > > > > any help and assistance would be greatly appreciated.
> > >

From forum: ns-users

Re: [patch] Use transactions in SQLite output

2009-11-12T14:12:13Z

> Hi all,
>
> I'm working on a routing protocol implementation in ns-3 (Cross-Entropy
> Ant
> System or CEAS for short). To be able to analyze how the protocol behaves,
> I've been using the SQLite data output interface. I'm logging relatively
> large
> amounts of data: currently about 5000 insert queries per simulation run
> and I
> expect that number to increase significantly.
>
> As storing the data started to take almost 50% of my simulation time, I
> took a
> look at the code in contrib/stats/sqlite-data-output.cc and found out that
> it
> doesn't use transactions. The attached patch is a crude but simple way to
> enable them. It shouldn't cause big delays in small batches of queries,
> but
> really helps with big numbers of inserts.
>
> A small benchmark gave the following results:
>
> - Simulation, don't store results: ca. 18s
> - Simulation + store without transactions: ca. 31s
> - Simulation + store with transactions: ca. 18s
>

Seems really interesting, plus the patch is really small. Did you check if
there is any impact on existing code/functionalities?
Tom, Craig, Gustavo, Others, what do you think?

> Effectively, the storage delay disappears completely - which is a welcome
> improvement. Would this be acceptable for inclusion in ns-3?
>
> Regards,
>
> Jonathan
>
> P.S.: I have some other code, such as an 'interval data collector' which
> samples a value multiple times during a simulation (to be able to graph
> how a
> value changes over time during a simulation) and the routing protocol
> implementation itself. I will try to post that when it's in a more
> publishable
> state - it's currently still in development and doesn't conform to the
> ns-3
> coding standards yet.

Cool, your contribution will be welcome ;)

>
> =============
>
> --- sqlite-data-output.cc 2009-11-12 15:09:05.000000000 +0100
> +++ sqlite-data-output-transaction.cc 2009-11-12 14:36:05.000000000
> +0100
> @@ -131,11 +131,13 @@
> blob.second + "')");
> }
>
> + Exec("BEGIN");
> SqliteOutputCallback callback(this, run);
> for (DataCalculatorList::iterator i = dc.DataCalculatorBegin();
> i != dc.DataCalculatorEnd(); i++) {
> (*i)->Output(callback);
> }
> + Exec("COMMIT");
>
> sqlite3_close(m_db);
>
>

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