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Boost-Build : |
Subject: Re: [Boost-build] Dependencies dropped during concurrent builds
From: Nogradi, Chris (Chris.Nogradi_at_[hidden])
Date: 2013-10-31 13:31:52
On Thursday, October 31, 2013 10:51 AM, Steven Watanabe wrote:
> >
> > rule gen_files ( targets * : sources * : properties * ) {
> > ...
> > JAM_SEMAPHORE on $(targets) = <s>verify-gen-semaphore ;
> > local temp = $(targets[1]:G)verify_temp ;
> > NOCARE $(temp) ;
> > LOCATE on $(temp) = [ on $(targets[1]) return $(LOCATE) ] ;
> > TEMP on $(targets) = $(temp) ;
> > DEPENDS $(temp) : $(sources) ;
> > DEPENDS $(targets) : $(temp) ;
> > common.RmTemps $(temp) : $(temp) ;
> > }
> >
>
> Can $(targets) ever have more than one target here?
> If so, then the problem is definitely the JAM_SEMAPHORE. (gen_files now
> waits until all its targets are ready to update. JAM_SEMAPHORE prevents
> more than one target from being ready at the same time.). Ugh. I'm going
> to have to rewrite the semaphore code, too.
>
Yes it always does have 4 targets. However, I am going to remove this hack once your fix works. The above was only need to reduce the targets from 30 x 4 to 4 to reduce the likelihood of seeing the problem.
> >
> > However if I now try to build one of the dlls, it actually builds it (-
> d+12 attached in out file). Then if I invoke the entire build, it
> actually finishes and produces all the dlls and the final exe (out2
> attached).
> >
> > Thanks for your help diagnosing this.
> >
>
> It looks like the problem is sys_resource.dll.
> Is there anything unusual about this dll?
>
I am looking into it more. The dll is actually referenced by other dlls. The dll also depends on other custom generated files. I'll try to strip it down some more but I am not sure what I am looking for.
Chris
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