[ndnSIM] Evicting a specific item from the content store (nfd::cs::Cs)

John Baugh jpbaugh at umich.edu
Sat Nov 19 09:05:39 PST 2016

So, if insert is called on the Cs, the only thing inserted is the data Name
into the table.  The actual entry isn't inserted anywhere because handling
the actual entries is up to.the policy?

Technically, we need to implement 'doAfterInsert' to do the actual entry
insertion into our own data structures?



On Nov 19, 2016 6:06 AM, "Igor Carvalho" <igfuca at gmail.com> wrote:

Hi, John.
About your last queation, I believe that this has not been implemented
because Cs  removals are performed by the replacement  policies (Lru/Fifo),
which makes it unnecessary the implementation of a specific piece of
content. If you go through  both implementations, they have the method that
is in charge this.


LruPolicy::doAfterInsert(iterator i)


  this->insertToQueue(i, true);



Hope that helps.


Em 19 de nov de 2016 05:05, "John Baugh" <jpbaugh at umich.edu> escreveu:

> Hello all:
> Okay, please correct me if I'm wrong:
> If I understand this correctly, when you create a custom Policy
> subclass/derived class, *the developer *is responsible for creating the
> three queues specified in the NFD Developer guide?  (unsolicited, stale,
> and fifo)?  So we directly control what stays in the "queues" (std::list)
> according the the policy that we can determine.  So the *Policy *maintains
> the actual Entries, while the Cs maintains the Table of names?  I noticed
> the three queues don't actually live in the cs.cpp or cs.hpp files.
> I'm *still * a little confused about the Cs::erase method:  why isn't it
> implemented?  How do we "trigger" a removal of an item from the Content
> Store (Policy?)
> Thanks,
> John
> On Fri, Nov 18, 2016 at 12:10 PM, John Baugh <jpbaugh at umich.edu> wrote:
>> Sorry to be bothersome - I've continued working on this and haven't made
>> a solution yet.  Any ideas?
>> Thanks,
>> John
>> On Fri, Nov 18, 2016 at 3:56 AM, John Baugh <jpbaugh at umich.edu> wrote:
>>> Greetings all,
>>> 1.)  When I tried to use the erase( ) function to remove an item, I
>>> found out that the method is not implemented.  I checked the code from the
>>> documentation and found out that this is indeed the case.
>>> So how am I supposed to evict a specific item from the Content Store?
>>> 2.)  I've noticed when I use ./waf --run=some-test that the system often
>>> re-compiles tons of completely (as far as I know) unrelated files (the grid
>>> samples, tracers, etc.).  This adds significantly to the time it takes to
>>> run the test.  Any ideas why this might be happening?  I'm not using any of
>>> the sample files, tracers, etc. - nor have I modified them for my current
>>> tests.
>>> Thanks,
>>> John
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