On Fri, Mar 13, 2015 at 8:53 PM, 이원준 <rrii...@gmail.com> wrote:
> hello ~ :)
>
> i want to find function that call inline cache miss ( at most first )
>
> so, i find inline cache miss function
> RUNTIME_FUNCTION(StoreIC_Miss) {
> TimerEventScope<TimerEventIcMiss> timer(isolate);
>
> HandleScope scope(isolate);
> DCHECK(args.length() == 3);
> StoreIC ic(IC::NO_EXTRA_FRAME, isolate);
> Handle<Object> receiver = args.at<Object>(0);
> Handle<Name> key = args.at<Name>(1);
> ic.UpdateState(receiver, key);
> Handle<Object> result;
> ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
> isolate, result, ic.Store(receiver, key, args.at<Object>(2)));
> return *result;
> }
>
> And i am debugging above mentioned function in GDB and look stack (
> backtrace )
>
> However, stack is in ??()
>
> #0 v8::internal::StoreIC::Store (this=0x7fffffffc4d8, object=..., name=...,
> value=...,
> store_mode=v8::internal::Object::CERTAINLY_NOT_STORE_FROM_KEYED) at
> ../src/ic/ic.cc:1583
> #1 0x0000000000c9e95b in v8::internal::__RT_impl_StoreIC_Miss (args=...,
> isolate=0x2133910) at ../src/ic/ic.cc:2504
> #2 0x0000000000c9e792 in v8::internal::StoreIC_Miss (args_length=3,
> args_object=0x7fffffffc620, isolate=0x2133910)
> at ../src/ic/ic.cc:2493
> #3 0x0000118e1bd060bb in ?? ()
> #4 0x0000118e1bd06001 in ?? ()
> ...
> #52 0x0000118e1bd836fb in ?? ()
>
> i want to find invoke or call part that call #2 StoreIC_Miss function.
>
> help me...
If you build V8 with gdbjit=on and if your gdb is new enough, you
should see JS function names in the stack trace.
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