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This both says what we mean and silences a bunch of spurious CPP linting
warnings. This pragma is supported by all CPP implementations which we
support.
Reviewers: austin, erikd, simonmar, hvr
Reviewed By: simonmar
Subscribers: rwbarton, thomie
Differential Revision: https://phabricator.haskell.org/D3482
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Here we add support to GHCi for StaticPointers. This process begins by
adding remote GHCi messages for adding entries to the static pointer
table. We then collect binders needing SPT entries after linking and
send the interpreter a message adding entries with the appropriate
fingerprints.
Test Plan: `make test TEST=StaticPtr`
Reviewers: facundominguez, mboes, simonpj, simonmar, goldfire, austin,
hvr, erikd
Reviewed By: simonpj, simonmar
Subscribers: RyanGlScott, simonpj, thomie
Differential Revision: https://phabricator.haskell.org/D2504
GHC Trac Issues: #12356
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Summary:
The entries of the static pointers table are expected to exist as
object code. Thus we have ghci complain with an intelligible error
message if the static form is used in interpreted mode.
It also includes a fix to keysHashTable in Hash.c which could cause a
crash. The iteration of the hashtable internals was incorrect. This
patch has the function keysHashTable imitate the iteration in
freeHashTable.
Finally, we submit here some minor edits to comments and
GHC.StaticPtr.StaticPtrInfo field names.
Authored-by: Alexander Vershilov <alexander.vershilov@tweag.
Authored-by: Facundo Domínguez <facundo.dominguez@tweag.io>
Test Plan: ./validate
Reviewers: simonpj, hvr, austin
Reviewed By: austin
Subscribers: carter, thomie, qnikst, mboes
Differential Revision: https://phabricator.haskell.org/D586
GHC Trac Issues: #9878
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Summary:
A mutex is used to protect the SPT.
unsafeLookupStaticPtr and staticPtrKeys in GHC.StaticPtr are made
monadic.
SPT entries are removed in a destructor function of modules.
Authored-by: Facundo Domínguez <facundo.dominguez@tweag.io>
Authored-by: Alexander Vershilov <alexander.vershilov@tweag.io>
Test Plan: ./validate
Reviewers: austin, simonpj, hvr
Subscribers: carter, thomie, qnikst, mboes
Differential Revision: https://phabricator.haskell.org/D587
GHC Trac Issues: #9878
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Reviewed By: austin
Differential Revision: https://phabricator.haskell.org/D575
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Summary:
As proposed in [1], this extension introduces a new syntactic form
`static e`, where `e :: a` can be any closed expression. The static form
produces a value of type `StaticPtr a`, which works as a reference that
programs can "dereference" to get the value of `e` back. References are
like `Ptr`s, except that they are stable across invocations of a
program.
The relevant wiki pages are [2, 3], which describe the motivation/ideas
and implementation plan respectively.
[1] Jeff Epstein, Andrew P. Black, and Simon Peyton-Jones. Towards
Haskell in the cloud. SIGPLAN Not., 46(12):118–129, September 2011. ISSN
0362-1340.
[2] https://ghc.haskell.org/trac/ghc/wiki/StaticPointers
[3] https://ghc.haskell.org/trac/ghc/wiki/StaticPointers/ImplementationPlan
Authored-by: Facundo Domínguez <facundo.dominguez@tweag.io>
Authored-by: Mathieu Boespflug <m@tweag.io>
Authored-by: Alexander Vershilov <alexander.vershilov@tweag.io>
Test Plan: `./validate`
Reviewers: hvr, simonmar, simonpj, austin
Reviewed By: simonpj, austin
Subscribers: qnikst, bgamari, mboes, carter, thomie, goldfire
Differential Revision: https://phabricator.haskell.org/D550
GHC Trac Issues: #7015
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