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[Bug 1001116] Instruct lwIP to use special section for buffers andheap.
- From: bugzilla-daemon at bugs dot ecos dot sourceware dot org
- To: ecos-bugs at ecos dot sourceware dot org
- Date: Sun, 30 Jan 2011 18:43:33 +0000
- Subject: [Bug 1001116] Instruct lwIP to use special section for buffers andheap.
- Auto-submitted: auto-generated
- References: <bug-1001116-13@http.bugs.ecos.sourceware.org/>
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--- Comment #25 from Sergei Gavrikov <sergei.gavrikov@gmail.com> 2011-01-30 18:43:30 GMT ---
(In reply to comment #24)
> (In reply to comment #22)
> > Maybe this will be obsolete comment, but
> >
> > (In reply to comment #18)
> > > (In reply to comment #17)
> > > Therefore i would prefer something that will not depend on ECM. One way
> > > is:
> > >
> > > cdl_option CYGOPT_LWIP_MEM_SECTION {
> > > ...
> > > default_value 1
> > > ...
> > > }
> >
> > I disagreed with above, as for the most targets we will see *grayed* and
> > *checked* box in CT:
> >
> > [x] Use additional memory section
> >
> > To reduse mouse traffic you can use such a trick:
> >
> > cdl_option CYGOPT_LWIP_MEM_SECTION {
> > ...
> > default_value { is_substr(CYGDAT_LWIP_MEM_SECTION_NAME, ".") }
> > active_if CYGDAT_LWIP_MEM_SECTION_NAME
> >
> > The box will be unchecked until booldata in your HAL (CYGDAT_.*_NAME) is
> > not proper section name. However, this was quickly tested only.
>
> I have noticed it, but I allowed to occur it since I have seen similar
> behavior in some other CDLs.
Ilija, I have managed this with:
cdl_component CYGOPT_LWIP_MEM_PLF_SPEC {
display "Platform specific memory setting"
flavor none
no_define
cdl_option CYGOPT_LWIP_MEM_SECTION {
display "Use additional memory section"
flavor bool
calculated { CYGDAT_LWIP_MEM_SECTION_NAME && \
is_substr(CYGDAT_LWIP_MEM_SECTION_NAME, ".") }
active_if CYGDAT_LWIP_MEM_SECTION_NAME
...
But the difficulty to read/understand came back :-) However, it checks
that NAME is string and at the least it looks like section name.
> Actually I tried something similar
>
> cdl_option CYGOPT_LWIP_MEM_SECTION {
> ...
> default_value is_active(CYGDAT_LWIP_MEM_SECTION_NAME)
> active_if CYGDAT_LWIP_MEM_SECTION_NAME
I will try it in CT.
> But I'm not sure if it depends on the order the packages are processed/
> applied. FYI it worked for my test case (select default template then add
> lwip).
Ilija, I tested builds/configure for the below
lwip_net.cdl:
----
cdl_component CYGOPT_LWIP_MEM_PLF_SPEC {
display "Platform specific memory setting"
flavor none
no_define
cdl_option CYGOPT_LWIP_MEM_SECTION {
display "Use additional memory section"
flavor bool
calculated { CYGDAT_LWIP_MEM_SECTION_NAME && \
is_substr(CYGDAT_LWIP_MEM_SECTION_NAME, ".") }
active_if CYGDAT_LWIP_MEM_SECTION_NAME
### ... ###
}
}
hal_..._foo.cdl
----
### For test purposes ###
cdl_option CYGHWR_HAL_MEM_SECTION_NAME {
flavor data
# FIXME:
default_value { "\".2ram.foo\"" }
legal_values { "\".2ram.foo\"" "\".2ram.bar\"" }
### ... ###
}
### For test purposes ###
cdl_option CYGDAT_LWIP_MEM_SECTION_NAME {
display "Memory section attribute name"
parent CYGOPT_LWIP_MEM_PLF_SPEC
active_if CYGPKG_NET_LWIP
flavor booldata
default_value { CYGHWR_HAL_MEM_SECTION_NAME }
### ... ###
}
But I myself have argued for simplicity. Can you try it on your target?
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