1 /* -----------------------------------------------------------------------------
2 * $Id: RtsExternal.h,v 1.3 2004/08/21 12:47:17 panne Exp $
4 * (c) The GHC Team, 1998-2004
6 * Things visible externally to the RTS
8 * -------------------------------------------------------------------------- */
13 /* The RTS public interface. */
16 /* The standard FFI interface */
19 /* -----------------------------------------------------------------------------
20 Functions exported by the RTS for use in Stg code
21 -------------------------------------------------------------------------- */
24 extern void newCAF(void*);
26 extern void newCAF(StgClosure*);
30 extern I_ genSymZh(void);
31 extern I_ resetGenSymZh(void);
33 /* Concurrency/Exception PrimOps. */
34 extern int cmp_thread(StgPtr tso1, StgPtr tso2);
35 extern int rts_getThreadId(StgPtr tso);
36 extern int forkOS_createThread ( HsStablePtr entry );
38 /* grimy low-level support functions defined in StgPrimFloat.c */
39 extern StgDouble __encodeDouble (I_ size, StgByteArray arr, I_ e);
40 extern StgDouble __int_encodeDouble (I_ j, I_ e);
41 extern StgFloat __encodeFloat (I_ size, StgByteArray arr, I_ e);
42 extern StgFloat __int_encodeFloat (I_ j, I_ e);
43 extern StgInt isDoubleNaN(StgDouble d);
44 extern StgInt isDoubleInfinite(StgDouble d);
45 extern StgInt isDoubleDenormalized(StgDouble d);
46 extern StgInt isDoubleNegativeZero(StgDouble d);
47 extern StgInt isFloatNaN(StgFloat f);
48 extern StgInt isFloatInfinite(StgFloat f);
49 extern StgInt isFloatDenormalized(StgFloat f);
50 extern StgInt isFloatNegativeZero(StgFloat f);
52 /* Suspending/resuming threads around foreign calls */
53 extern StgInt suspendThread ( StgRegTable * );
54 extern StgRegTable * resumeThread ( StgInt );
56 /* Creating and destroying an adjustor thunk */
57 extern void* createAdjustor(int cconv, StgStablePtr hptr, StgFunPtr wptr);
58 extern void freeHaskellFunctionPtr(void* ptr);
60 /* -----------------------------------------------------------------------------
61 Storage manager stuff exported
62 -------------------------------------------------------------------------- */
64 /* Prototype for an evacuate-like function */
65 typedef void (*evac_fn)(StgClosure **);
67 extern void performGC(void);
68 extern void performMajorGC(void);
69 extern void performGCWithRoots(void (*get_roots)(evac_fn));
71 #endif /* RTSEXTERNAL_H */