RTS tidyup sweep, first phase

[ghc-hetmet.git] / includes / SMPClosureOps.h

diff --git a/includes/SMPClosureOps.h b/includes/SMPClosureOps.h
deleted file mode 100644 (file)
index f46dbde..0000000
--- a/includes/SMPClosureOps.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/* ----------------------------------------------------------------------------
- *
- * (c) The GHC Team, 2005
- *
- * Macros for THREADED_RTS support
- *
- * -------------------------------------------------------------------------- */
-
-#ifndef SMPCLOSUREOPS_H
-#define SMPCLOSUREOPS_H
-
-#ifdef CMINUSMINUS
-
-#define unlockClosure(ptr,info)                 \
-    prim %write_barrier() [];                   \
-    StgHeader_info(ptr) = info;    
-
-#else
-
-EXTERN_INLINE StgInfoTable *lockClosure(StgClosure *p);
-EXTERN_INLINE void unlockClosure(StgClosure *p, const StgInfoTable *info);
-
-#if defined(THREADED_RTS)
-
-/* -----------------------------------------------------------------------------
- * Locking/unlocking closures
- *
- * This is used primarily in the implementation of MVars.
- * -------------------------------------------------------------------------- */
-
-#define SPIN_COUNT 4000
-
-// We want a callable copy of lockClosure() so that we can refer to it
-// from .cmm files compiled using the native codegen.
-EXTERN_INLINE StgInfoTable *lockClosure(StgClosure *p)
-{
-    StgWord info;
-    do {
-       nat i = 0;
-       do {
-           info = xchg((P_)(void *)&p->header.info, (W_)&stg_WHITEHOLE_info);
-           if (info != (W_)&stg_WHITEHOLE_info) return (StgInfoTable *)info;
-       } while (++i < SPIN_COUNT);
-       yieldThread();
-    } while (1);
-}
-
-EXTERN_INLINE void unlockClosure(StgClosure *p, const StgInfoTable *info)
-{
-    // This is a strictly ordered write, so we need a write_barrier():
-    write_barrier();
-    p->header.info = info;
-}
-
-#else /* !THREADED_RTS */
-
-EXTERN_INLINE StgInfoTable *
-lockClosure(StgClosure *p)
-{ return (StgInfoTable *)p->header.info; }
-
-EXTERN_INLINE void
-unlockClosure(StgClosure *p STG_UNUSED, const StgInfoTable *info STG_UNUSED)
-{ /* nothing */ }
-
-#endif /* THREADED_RTS */
-
-// Handy specialised versions of lockClosure()/unlockClosure()
-EXTERN_INLINE void lockTSO(StgTSO *tso);
-EXTERN_INLINE void lockTSO(StgTSO *tso)
-{ lockClosure((StgClosure *)tso); }
-
-EXTERN_INLINE void unlockTSO(StgTSO *tso);
-EXTERN_INLINE void unlockTSO(StgTSO *tso)
-{ unlockClosure((StgClosure*)tso, (const StgInfoTable *)&stg_TSO_info); }
-
-#endif /* CMINUSMINUS */
-
-#endif /* SMPCLOSUREOPS_H */