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Glasgow Haskell Compiler / GHC
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Summary: The use of globals is quite painful when multiple rts are loaded, e.g. when plugins are loaded, which bring in a second rts. The sharedCAF appraoch was employed for the FastStringTable; I've taken the libery to extend this to the other globals I could find. This is a reboot of D2575, that should hopefully not exhibit the same windows build issues. Reviewers: Phyx, simonmar, goldfire, bgamari, austin, hvr, erikd Reviewed By: Phyx, simonmar, bgamari Subscribers: mpickering, thomie Differential Revision: https://phabricator.haskell.org/D2773
Summary: The use of globals is quite painful when multiple rts are loaded, e.g. when plugins are loaded, which bring in a second rts. The sharedCAF appraoch was employed for the FastStringTable; I've taken the libery to extend this to the other globals I could find. This is a reboot of D2575, that should hopefully not exhibit the same windows build issues. Reviewers: Phyx, simonmar, goldfire, bgamari, austin, hvr, erikd Reviewed By: Phyx, simonmar, bgamari Subscribers: mpickering, thomie Differential Revision: https://phabricator.haskell.org/D2773
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HsVersions.h 2.60 KiB
#ifndef HSVERSIONS_H
#define HSVERSIONS_H
#if 0
IMPORTANT! If you put extra tabs/spaces in these macro definitions,
you will screw up the layout where they are used in case expressions!
(This is cpp-dependent, of course)
#endif
/* Useful in the headers that we share with the RTS */
#define COMPILING_GHC 1
/* Pull in all the platform defines for this build (foo_TARGET_ARCH etc.) */
#include "ghc_boot_platform.h"
/* Pull in the autoconf defines (HAVE_FOO), but don't include
* ghcconfig.h, because that will include ghcplatform.h which has the
* wrong platform settings for the compiler (it has the platform
* settings for the target plat instead). */
#include "ghcautoconf.h"
#define GLOBAL_VAR(name,value,ty) \
{-# NOINLINE name #-}; \
name :: IORef (ty); \
name = Util.global (value);
#define GLOBAL_VAR_M(name,value,ty) \
{-# NOINLINE name #-}; \
name :: IORef (ty); \
name = Util.globalM (value);
#define SHARED_GLOBAL_VAR(name,accessor,saccessor,value,ty) \
{-# NOINLINE name #-}; \
name :: IORef (ty); \
name = Util.sharedGlobal (value) (accessor); \
foreign import ccall unsafe saccessor \
accessor :: Ptr (IORef a) -> IO (Ptr (IORef a));
#define SHARED_GLOBAL_VAR_M(name,accessor,saccessor,value,ty) \
{-# NOINLINE name #-}; \
name :: IORef (ty); \
name = Util.sharedGlobalM (value) (accessor); \
foreign import ccall unsafe saccessor \
accessor :: Ptr (IORef a) -> IO (Ptr (IORef a));
#define ASSERT(e) if debugIsOn && not (e) then (assertPanic __FILE__ __LINE__) else
#define ASSERT2(e,msg) if debugIsOn && not (e) then (assertPprPanic __FILE__ __LINE__ (msg)) else
#define WARN( e, msg ) (warnPprTrace (e) __FILE__ __LINE__ (msg)) $
-- Examples: Assuming flagSet :: String -> m Bool
--
-- do { c <- getChar; MASSERT( isUpper c ); ... }
-- do { c <- getChar; MASSERT2( isUpper c, text "Bad" ); ... }
-- do { str <- getStr; ASSERTM( flagSet str ); .. }
-- do { str <- getStr; ASSERTM2( flagSet str, text "Bad" ); .. }
-- do { str <- getStr; WARNM2( flagSet str, text "Flag is set" ); .. }
#define MASSERT(e) ASSERT(e) return ()
#define MASSERT2(e,msg) ASSERT2(e,msg) return ()
#define ASSERTM(e) do { bool <- e; MASSERT(bool) }
#define ASSERTM2(e,msg) do { bool <- e; MASSERT2(bool,msg) }
#define WARNM2(e,msg) do { bool <- e; WARN(bool, msg) return () }
#endif /* HsVersions.h */