1 /* ----------------------------------------------------------------------------
3 * (c) The GHC Team, 1998-2004
5 * API for invoking Haskell functions via the RTS
7 * --------------------------------------------------------------------------*/
19 * Running the scheduler
22 NoStatus, /* not finished yet */
23 Success, /* completed successfully */
24 Killed, /* uncaught exception */
25 Interrupted, /* stopped in response to a call to interruptStgRts */
26 HeapExhausted /* out of memory */
29 typedef StgClosure *HaskellObj;
32 * An abstract type representing the token returned by rts_lock() and
33 * used when allocating objects and threads in the RTS.
35 typedef struct Capability_ Capability;
37 /* ----------------------------------------------------------------------------
38 Starting up and shutting down the Haskell RTS.
39 ------------------------------------------------------------------------- */
40 extern void startupHaskell ( int argc, char *argv[],
41 void (*init_root)(void) );
42 extern void shutdownHaskell ( void );
43 extern void shutdownHaskellAndExit ( int exitCode );
44 extern void getProgArgv ( int *argc, char **argv[] );
45 extern void setProgArgv ( int argc, char *argv[] );
46 extern void getFullProgArgv ( int *argc, char **argv[] );
47 extern void setFullProgArgv ( int argc, char *argv[] );
49 #ifndef mingw32_HOST_OS
50 extern void shutdownHaskellAndSignal (int sig);
54 extern void (*exitFn)(int);
56 /* ----------------------------------------------------------------------------
59 You have to surround all access to the RtsAPI with these calls.
60 ------------------------------------------------------------------------- */
62 // acquires a token which may be used to create new objects and
64 Capability *rts_lock (void);
66 // releases the token acquired with rts_lock().
67 void rts_unlock (Capability *token);
69 /* ----------------------------------------------------------------------------
70 Building Haskell objects from C datatypes.
71 ------------------------------------------------------------------------- */
72 HaskellObj rts_mkChar ( Capability *, HsChar c );
73 HaskellObj rts_mkInt ( Capability *, HsInt i );
74 HaskellObj rts_mkInt8 ( Capability *, HsInt8 i );
75 HaskellObj rts_mkInt16 ( Capability *, HsInt16 i );
76 HaskellObj rts_mkInt32 ( Capability *, HsInt32 i );
77 HaskellObj rts_mkInt64 ( Capability *, HsInt64 i );
78 HaskellObj rts_mkWord ( Capability *, HsWord w );
79 HaskellObj rts_mkWord8 ( Capability *, HsWord8 w );
80 HaskellObj rts_mkWord16 ( Capability *, HsWord16 w );
81 HaskellObj rts_mkWord32 ( Capability *, HsWord32 w );
82 HaskellObj rts_mkWord64 ( Capability *, HsWord64 w );
83 HaskellObj rts_mkPtr ( Capability *, HsPtr a );
84 HaskellObj rts_mkFunPtr ( Capability *, HsFunPtr a );
85 HaskellObj rts_mkFloat ( Capability *, HsFloat f );
86 HaskellObj rts_mkDouble ( Capability *, HsDouble f );
87 HaskellObj rts_mkStablePtr ( Capability *, HsStablePtr s );
88 HaskellObj rts_mkBool ( Capability *, HsBool b );
89 HaskellObj rts_mkString ( Capability *, char *s );
91 HaskellObj rts_apply ( Capability *, HaskellObj, HaskellObj );
93 /* ----------------------------------------------------------------------------
94 Deconstructing Haskell objects
95 ------------------------------------------------------------------------- */
96 HsChar rts_getChar ( HaskellObj );
97 HsInt rts_getInt ( HaskellObj );
98 HsInt8 rts_getInt8 ( HaskellObj );
99 HsInt16 rts_getInt16 ( HaskellObj );
100 HsInt32 rts_getInt32 ( HaskellObj );
101 HsInt64 rts_getInt64 ( HaskellObj );
102 HsWord rts_getWord ( HaskellObj );
103 HsWord8 rts_getWord8 ( HaskellObj );
104 HsWord16 rts_getWord16 ( HaskellObj );
105 HsWord32 rts_getWord32 ( HaskellObj );
106 HsWord64 rts_getWord64 ( HaskellObj );
107 HsPtr rts_getPtr ( HaskellObj );
108 HsFunPtr rts_getFunPtr ( HaskellObj );
109 HsFloat rts_getFloat ( HaskellObj );
110 HsDouble rts_getDouble ( HaskellObj );
111 HsStablePtr rts_getStablePtr ( HaskellObj );
112 HsBool rts_getBool ( HaskellObj );
114 /* ----------------------------------------------------------------------------
115 Evaluating Haskell expressions
117 The versions ending in '_' allow you to specify an initial stack size.
118 Note that these calls may cause Garbage Collection, so all HaskellObj
119 references are rendered invalid by these calls.
120 ------------------------------------------------------------------------- */
122 rts_eval (Capability *, HaskellObj p, /*out*/HaskellObj *ret);
125 rts_eval_ (Capability *, HaskellObj p, unsigned int stack_size,
126 /*out*/HaskellObj *ret);
129 rts_evalIO (Capability *, HaskellObj p, /*out*/HaskellObj *ret);
132 rts_evalStableIO (Capability *, HsStablePtr s, /*out*/HsStablePtr *ret);
135 rts_evalLazyIO (Capability *, HaskellObj p, /*out*/HaskellObj *ret);
138 rts_evalLazyIO_ (Capability *, HaskellObj p, unsigned int stack_size,
139 /*out*/HaskellObj *ret);
142 rts_checkSchedStatus (char* site, Capability *);
145 rts_getSchedStatus (Capability *cap);
147 /* --------------------------------------------------------------------------
150 These are used by foreign export and foreign import "wrapper" stubs.
151 ----------------------------------------------------------------------- */
153 extern StgWord base_GHCziTopHandler_runIO_closure[];
154 extern StgWord base_GHCziTopHandler_runNonIO_closure[];
155 #define runIO_closure base_GHCziTopHandler_runIO_closure
156 #define runNonIO_closure base_GHCziTopHandler_runNonIO_closure
158 /* ------------------------------------------------------------------------ */
164 #endif /* RTSAPI_H */