1 /* -----------------------------------------------------------------------------
3 * (c) The GHC Team, 1998-2004
5 * Things visible externally to the RTS
7 * -------------------------------------------------------------------------- */
12 /* The RTS public interface. */
15 /* The standard FFI interface */
18 #ifdef HAVE_SYS_TYPES_H
19 #include <sys/types.h>
22 /* -----------------------------------------------------------------------------
23 Functions exported by the RTS for use in Stg code
24 -------------------------------------------------------------------------- */
27 extern void newCAF(void*);
29 extern void newCAF(StgClosure*);
33 extern HsInt genSymZh(void);
34 extern HsInt resetGenSymZh(void);
36 /* Alternate to raise(3) for threaded rts, for OpenBSD */
37 extern int genericRaise(int sig);
39 /* Concurrency/Exception PrimOps. */
40 extern int cmp_thread(StgPtr tso1, StgPtr tso2);
41 extern int rts_getThreadId(StgPtr tso);
42 extern int forkOS_createThread ( HsStablePtr entry );
43 extern pid_t forkProcess(HsStablePtr *entry);
44 extern HsBool rtsSupportsBoundThreads(void);
45 extern StgInt newSpark (StgRegTable *reg, StgClosure *p);
47 /* grimy low-level support functions defined in StgPrimFloat.c */
48 extern StgDouble __encodeDouble (I_ size, StgByteArray arr, I_ e);
49 extern StgDouble __int_encodeDouble (I_ j, I_ e);
50 extern StgFloat __encodeFloat (I_ size, StgByteArray arr, I_ e);
51 extern StgFloat __int_encodeFloat (I_ j, I_ e);
52 extern StgInt isDoubleNaN(StgDouble d);
53 extern StgInt isDoubleInfinite(StgDouble d);
54 extern StgInt isDoubleDenormalized(StgDouble d);
55 extern StgInt isDoubleNegativeZero(StgDouble d);
56 extern StgInt isFloatNaN(StgFloat f);
57 extern StgInt isFloatInfinite(StgFloat f);
58 extern StgInt isFloatDenormalized(StgFloat f);
59 extern StgInt isFloatNegativeZero(StgFloat f);
61 /* Suspending/resuming threads around foreign calls */
62 extern void * suspendThread ( StgRegTable * );
63 extern StgRegTable * resumeThread ( void * );
66 extern void stg_scheduleThread (StgRegTable *reg, struct StgTSO_ *tso);
68 /* Creating and destroying an adjustor thunk */
69 extern void* createAdjustor(int cconv, StgStablePtr hptr, StgFunPtr wptr,
71 extern void freeHaskellFunctionPtr(void* ptr);
74 extern int hs_hpc_module(char *modName,int modCount,int modHashNo,StgWord64 *tixArr);
75 extern void hs_hpc_tick(int globIx,struct StgTSO_ *current_tso);
76 extern void hs_hpc_raise_event(struct StgTSO_ *current_tso);
77 extern void hs_hpc_thread_finished_event(struct StgTSO_ *current_tso);
79 #if defined(mingw32_HOST_OS)
80 extern int rts_InstallConsoleEvent ( int action, StgStablePtr *handler );
81 extern void rts_ConsoleHandlerDone ( int ev );
83 extern int stg_sig_install (int, int, StgStablePtr *, void *);
86 #if defined(mingw32_HOST_OS)
87 extern StgInt console_handler;
89 extern StgInt *signal_handlers;
92 #if defined(mingw32_HOST_OS)
93 void *getIOManagerEvent (void);
94 HsWord32 readIOManagerEvent (void);
95 void sendIOManagerEvent (HsWord32 event);
97 extern void setIOManagerPipe (int fd);
100 extern void* allocateExec(unsigned int len);
102 /* -----------------------------------------------------------------------------
103 Storage manager stuff exported
104 -------------------------------------------------------------------------- */
106 extern void performGC(void);
107 extern void performMajorGC(void);
108 extern HsInt64 getAllocations( void );
109 extern void revertCAFs( void );
110 extern void dirty_MUT_VAR(StgRegTable *reg, StgClosure *p);
112 #endif /* RTSEXTERNAL_H */