Hello,
I`m trying to understand how the white box is working. I see this code
where I suppose I have to find the answer:
struct WhiteBoxImpl : WhiteBox {
API::symtable_interface_t * theSymTable;
std::vector< PhysicalMemoryAddress > theThreadTs;
std::vector< PhysicalMemoryAddress > theIdleThreadTs;
WhiteBoxImpl() {
#if FLEXUS_TARGET_IS(v9)
API::SIM_load_module("symtable");
API::conf_class_t * symtable_class = API::SIM_get_class("symtable");
API::conf_object_t * symtable_obj = API::SIM_new_object(symtable_class,
"flexus_symtable");
theSymTable = reinterpret_cast<API::symtable_interface_t
*>(API::SIM_get_class_interface(symtable_class, "symtable"));
for (int32_t i = 0; i < API::SIM_number_processors(); ++i) {
API::conf_object_t * ctx =
API::SIM_get_attribute(Simics::APIFwd::SIM_get_processor(i),
"current_context").u.object;
API::attr_value_t val;
val.kind = API::Sim_Val_Object;
val.u.object = symtable_obj;
API::SIM_set_attribute(ctx, "symtable", &val);
}
API::attr_value_t arch = API::SIM_get_attribute(
Simics::APIFwd::SIM_get_processor(0), "architecture");
API::SIM_set_attribute( symtable_obj, "arch", &arch);
DBG_(Dev, ( << "symtable loaded" ) );
#endif
}
The problem is that I don't know which thread is being executed because I
suspect Solaris10 is doing the thread migration meanwhile and I can't rely
on the values until I see per thread. Does the ctx hold the information
about the current thread that the timing simulation is executing per core ?
Thanks
Mihai
On Wed, Jul 28, 2010 at 4:22 AM, Volos Stavros <[email protected]>wrote:
> Actually, the component WhiteBox is responsible to give the thread id of
> the thread
> that is being executed in a particular CPU. However, this component is
> hardcoded
> for Solaris 8. I worked on this component to support Solaris 10, but I
> didn't have time
> to check whether it works properly or not.
>
> Assuming that you know which thread is being executed, it should be easy to
> get
> measured values per software thread.
>
> Regards,
> -Stavros
>
> ------------------------------
> *From:* mihai pricopi [[email protected]]
> *Sent:* Tuesday, July 27, 2010 6:07 PM
> *To:* Volos Stavros
> *Subject:* Re: Get values per thread
>
> Per software thread. I discovered that Solaris modifies a register when
> it does the context switch but I`m not sure where exactly in flexus i can
> read that register and if flexus already gives me this information ?
>
> Thanks
>
> On Tue, Jul 27, 2010 at 11:55 PM, Volos Stavros <[email protected]>wrote:
>
>> Hi Mihai,
>>
>> What do you mean by the term "thread"? Do you mean software thread or
>> hardware thread (multithreaded
>> processor) ?
>>
>> Regards,
>> -Stavros
>>
>> ------------------------------
>> *From:* mihai pricopi [[email protected]]
>> *Sent:* Tuesday, July 27, 2010 12:57 PM
>> *To:* [email protected]
>> *Subject:* Get values per thread
>>
>> Hi,
>>
>> Is it possible that Flexus can give measured values per thread not per
>> core ?
>>
>> Thanks
>>
>
>
