[gem5-users] Build error while adding statistics

[Arth Shah via gem5-users]

Hi everyone,

I'm attempting to add statistics to the Classic cache's mshr_queue.
There was no stats struct already so I tried to follow the steps in
Bootcamp to add one.
I see the following error though. Could you help?

 src/mem/cache/mshr_queue.cc:59:48: *error: no matching function for call
to* ‘gem5::MSHRQueue::MshrStats::MshrStats(gem5::MSHRQueue*)’
       stats(this), demandReserve(demand_reserve)


Here are the main set of changes.

*mshr_queue.hh*

class MSHRQueue : public Queue<MSHR> {

...

    struct MshrStats : public statistics::Group
    {
        MshrStats(statistics::Group *parent);

        /** Number of times an entry was inserted in MSHR. */
        statistics::Scalar mshrInserts;

    } stats;
...

}

*mshr_queue.cc*

...
MSHRQueue::MSHRQueue(const std::string &_label,
                     int num_entries, int reserve,
                     int demand_reserve, std::string cache_name = "")
    : Queue<MSHR>(_label, num_entries, reserve, cache_name + ".mshr_queue"),
      stats(this), demandReserve(demand_reserve)
{}

...
MSHRQueue::MshrStats::MshrStats(statistics::Group *parent)
    : statistics::Group(parent),
    ADD_STAT(mshrInserts, statistics::units::Count::get(),
             "Number of times an entry was inserted in MSHR")
{}

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