Eric van Riet Paap wrote:
hello Samuele,
I have been reading your taskengine code with great interest.
I was wondering what your plans with regards to forking are.
Would it be possible to extend the option so we can specify after which task
to fork, instead of having some fixed points as we had before?
yes, this is doable, although given how we use fork it makes more sense
to have a fork-before
What would be of great help (to me at least) is if multiple goals could be
specified (lets say: generate pypy-c and pypy-llvm). The program could then
be smart enough to fork just before the tasklists differ. With the current
translate_pypy there is no way to do this.
a TranslationDriver is really meant to deal with one translation go, so
this could be doable but
I don't think is worth the complexity. OTOH factoring code in
translate_pypy.py to have more reusable
parts and creating a new script or adding a special option, you could
implement the following logic
keeping TranslationDriver relatively straightforward:
compile-for-all-backends:
drv = ...
drv.proceed('rtype')
for backend
fork ->
drv.proceed('compile_'+backend)
An additional nicety would be if we could have an option where we specify how
many of these task to run in parallel (like 'make -j X') . I do realize some
things at the moment will not run nicely in parallel (compiling the same file
with different compiler options for instance), but that is another problem.
cheers
Eric
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