1 /* -----------------------------------------------------------------------------
2 * $Id: RtsExternal.h,v 1.4 2004/09/09 11:38:09 stolz 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 );
37 extern StgInt forkProcess(HsStablePtr *entry);
39 /* grimy low-level support functions defined in StgPrimFloat.c */
40 extern StgDouble __encodeDouble (I_ size, StgByteArray arr, I_ e);
41 extern StgDouble __int_encodeDouble (I_ j, I_ e);
42 extern StgFloat __encodeFloat (I_ size, StgByteArray arr, I_ e);
43 extern StgFloat __int_encodeFloat (I_ j, I_ e);
44 extern StgInt isDoubleNaN(StgDouble d);
45 extern StgInt isDoubleInfinite(StgDouble d);
46 extern StgInt isDoubleDenormalized(StgDouble d);
47 extern StgInt isDoubleNegativeZero(StgDouble d);
48 extern StgInt isFloatNaN(StgFloat f);
49 extern StgInt isFloatInfinite(StgFloat f);
50 extern StgInt isFloatDenormalized(StgFloat f);
51 extern StgInt isFloatNegativeZero(StgFloat f);
53 /* Suspending/resuming threads around foreign calls */
54 extern StgInt suspendThread ( StgRegTable * );
55 extern StgRegTable * resumeThread ( StgInt );
57 /* Creating and destroying an adjustor thunk */
58 extern void* createAdjustor(int cconv, StgStablePtr hptr, StgFunPtr wptr);
59 extern void freeHaskellFunctionPtr(void* ptr);
61 /* -----------------------------------------------------------------------------
62 Storage manager stuff exported
63 -------------------------------------------------------------------------- */
65 /* Prototype for an evacuate-like function */
66 typedef void (*evac_fn)(StgClosure **);
68 extern void performGC(void);
69 extern void performMajorGC(void);
70 extern void performGCWithRoots(void (*get_roots)(evac_fn));
72 #endif /* RTSEXTERNAL_H */