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);
46 extern void stopTimer(void);
48 /* grimy low-level support functions defined in StgPrimFloat.c */
49 extern StgDouble __encodeDouble (I_ size, StgByteArray arr, I_ e);
50 extern StgDouble __int_encodeDouble (I_ j, I_ e);
51 extern StgFloat __encodeFloat (I_ size, StgByteArray arr, I_ e);
52 extern StgFloat __int_encodeFloat (I_ j, I_ e);
53 extern StgInt isDoubleNaN(StgDouble d);
54 extern StgInt isDoubleInfinite(StgDouble d);
55 extern StgInt isDoubleDenormalized(StgDouble d);
56 extern StgInt isDoubleNegativeZero(StgDouble d);
57 extern StgInt isFloatNaN(StgFloat f);
58 extern StgInt isFloatInfinite(StgFloat f);
59 extern StgInt isFloatDenormalized(StgFloat f);
60 extern StgInt isFloatNegativeZero(StgFloat f);
62 /* Suspending/resuming threads around foreign calls */
63 extern void * suspendThread ( StgRegTable * );
64 extern StgRegTable * resumeThread ( void * );
67 extern void stg_scheduleThread (StgRegTable *reg, struct StgTSO_ *tso);
69 /* Creating and destroying an adjustor thunk */
70 extern void* createAdjustor(int cconv, StgStablePtr hptr, StgFunPtr wptr,
72 extern void freeHaskellFunctionPtr(void* ptr);
75 extern int hs_hpc_module(char *modName,int modCount,int modHashNo,StgWord64 *tixArr);
76 // Simple linked list of modules
77 typedef struct _HpcModuleInfo {
78 char *modName; // name of module
79 int tickCount; // number of ticks
80 int tickOffset; // offset into a single large .tix Array
81 int hashNo; // Hash number for this module's mix info
82 StgWord64 *tixArr; // tix Array; local for this module
83 struct _HpcModuleInfo *next;
86 extern HpcModuleInfo *hs_hpc_rootModule(void);
89 #if defined(mingw32_HOST_OS)
90 extern int rts_InstallConsoleEvent ( int action, StgStablePtr *handler );
91 extern void rts_ConsoleHandlerDone ( int ev );
93 extern int stg_sig_install (int, int, StgStablePtr *, void *);
96 #if defined(mingw32_HOST_OS)
97 extern StgInt console_handler;
99 extern StgInt *signal_handlers;
102 #if defined(mingw32_HOST_OS)
103 void *getIOManagerEvent (void);
104 HsWord32 readIOManagerEvent (void);
105 void sendIOManagerEvent (HsWord32 event);
107 extern void setIOManagerPipe (int fd);
110 extern void* allocateExec(unsigned int len);
113 extern int rts_stop_next_breakpoint;
114 extern int rts_stop_on_exception;
115 extern HsStablePtr rts_breakpoint_io_action;
117 /* -----------------------------------------------------------------------------
118 Storage manager stuff exported
119 -------------------------------------------------------------------------- */
121 extern void performGC(void);
122 extern void performMajorGC(void);
123 extern HsInt64 getAllocations( void );
124 extern void revertCAFs( void );
125 extern void dirty_MUT_VAR(StgRegTable *reg, StgClosure *p);
127 #endif /* RTSEXTERNAL_H */