/* ----------------------------------------------------------------------------- * * (c) The GHC Team, 1998-2009 * * RTS external APIs. This file declares everything that the GHC RTS * exposes externally. * * To understand the structure of the RTS headers, see the wiki: * http://ghc.haskell.org/trac/ghc/wiki/Commentary/SourceTree/Includes * * ---------------------------------------------------------------------------*/ #ifndef RTS_H #define RTS_H #ifdef __cplusplus extern "C" { #endif /* We include windows.h very early, as on Win64 the CONTEXT type has fields "R8", "R9" and "R10", which goes bad if we've already #define'd those names for our own purposes (in stg/Regs.h) */ #if defined(HAVE_WINDOWS_H) #include #endif #ifndef IN_STG_CODE #define IN_STG_CODE 0 #endif #include "Stg.h" #include "HsFFI.h" #include "RtsAPI.h" // Turn off inlining when debugging - it obfuscates things #ifdef DEBUG # undef STATIC_INLINE # define STATIC_INLINE static #endif #include "rts/Types.h" #if __GNUC__ >= 3 #define ATTRIBUTE_ALIGNED(n) __attribute__((aligned(n))) #else #define ATTRIBUTE_ALIGNED(n) /*nothing*/ #endif // Symbols that are extern, but private to the RTS, are declared // with visibility "hidden" to hide them outside the RTS shared // library. #if defined(HAS_VISIBILITY_HIDDEN) #define RTS_PRIVATE GNUC3_ATTRIBUTE(visibility("hidden")) #else #define RTS_PRIVATE /* disabled: RTS_PRIVATE */ #endif #if __GNUC__ >= 4 #define RTS_UNLIKELY(p) __builtin_expect((p),0) #else #define RTS_UNLIKELY(p) p #endif /* __builtin_unreachable is supported since GNU C 4.5 */ #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) #define RTS_UNREACHABLE __builtin_unreachable() #else #define RTS_UNREACHABLE abort() #endif /* Fix for mingw stat problem (done here so it's early enough) */ #ifdef mingw32_HOST_OS #define __MSVCRT__ 1 #endif /* Needed to get the macro version of errno on some OSs, and also to get prototypes for the _r versions of C library functions. */ #ifndef _REENTRANT #define _REENTRANT 1 #endif /* * We often want to know the size of something in units of an * StgWord... (rounded up, of course!) */ #define ROUNDUP_BYTES_TO_WDS(n) (((n) + sizeof(W_) - 1) / sizeof(W_)) #define sizeofW(t) ROUNDUP_BYTES_TO_WDS(sizeof(t)) /* ----------------------------------------------------------------------------- Assertions and Debuggery CHECK(p) evaluates p and terminates with an error if p is false ASSERT(p) like CHECK(p) if DEBUG is on, otherwise a no-op -------------------------------------------------------------------------- */ void _assertFail(const char *filename, unsigned int linenum) GNUC3_ATTRIBUTE(__noreturn__); #define CHECK(predicate) \ if (predicate) \ /*null*/; \ else \ _assertFail(__FILE__, __LINE__) #define CHECKM(predicate, msg, ...) \ if (predicate) \ /*null*/; \ else \ barf(msg, ##__VA_ARGS__) #ifndef DEBUG #define ASSERT(predicate) /* nothing */ #define ASSERTM(predicate,msg,...) /* nothing */ #else #define ASSERT(predicate) CHECK(predicate) #define ASSERTM(predicate,msg,...) CHECKM(predicate,msg,##__VA_ARGS__) #endif /* DEBUG */ /* * Use this on the RHS of macros which expand to nothing * to make sure that the macro can be used in a context which * demands a non-empty statement. */ #define doNothing() do { } while (0) #ifdef DEBUG #define USED_IF_DEBUG #define USED_IF_NOT_DEBUG STG_UNUSED #else #define USED_IF_DEBUG STG_UNUSED #define USED_IF_NOT_DEBUG #endif #ifdef THREADED_RTS #define USED_IF_THREADS #define USED_IF_NOT_THREADS STG_UNUSED #else #define USED_IF_THREADS STG_UNUSED #define USED_IF_NOT_THREADS #endif #define FMT_SizeT "zu" #define FMT_HexSizeT "zx" /* ----------------------------------------------------------------------------- Time values in the RTS -------------------------------------------------------------------------- */ // For most time values in the RTS we use a fixed resolution of nanoseconds, // normalising the time we get from platform-dependent APIs to this // resolution. #define TIME_RESOLUTION 1000000000 typedef StgInt64 Time; #define TIME_MAX HS_INT64_MAX #if TIME_RESOLUTION == 1000000000 // I'm being lazy, but it's awkward to define fully general versions of these #define TimeToUS(t) ((t) / 1000) #define TimeToNS(t) (t) #define USToTime(t) ((Time)(t) * 1000) #define NSToTime(t) ((Time)(t)) #else #error Fix TimeToNS(), TimeToUS() etc. #endif #define SecondsToTime(t) ((Time)(t) * TIME_RESOLUTION) #define TimeToSeconds(t) ((t) / TIME_RESOLUTION) // Use instead of SecondsToTime() when we have a floating-point // seconds value, to avoid truncating it. INLINE_HEADER Time fsecondsToTime (double t) { return (Time)(t * TIME_RESOLUTION); } /* ----------------------------------------------------------------------------- Include everything STG-ish -------------------------------------------------------------------------- */ /* System headers: stdlib.h is needed so that we can use NULL. It must * come after MachRegs.h, because stdlib.h might define some inline * functions which may only be defined after register variables have * been declared. */ #include #include "rts/Config.h" /* Global constraints */ #include "rts/Constants.h" /* Profiling information */ #include "rts/prof/CCS.h" #include "rts/prof/LDV.h" /* Parallel information */ #include "rts/OSThreads.h" #include "rts/SpinLock.h" #include "rts/Messages.h" #include "rts/Threads.h" /* Storage format definitions */ #include "rts/storage/FunTypes.h" #include "rts/storage/InfoTables.h" #include "rts/storage/Closures.h" #include "rts/storage/ClosureTypes.h" #include "rts/storage/TSO.h" #include "stg/MiscClosures.h" /* InfoTables, closures etc. defined in the RTS */ #include "rts/storage/Block.h" #include "rts/storage/ClosureMacros.h" #include "rts/storage/MBlock.h" #include "rts/storage/GC.h" /* Other RTS external APIs */ #include "rts/Parallel.h" #include "rts/Signals.h" #include "rts/BlockSignals.h" #include "rts/Hpc.h" #include "rts/Flags.h" #include "rts/Adjustor.h" #include "rts/FileLock.h" #include "rts/GetTime.h" #include "rts/Globals.h" #include "rts/IOManager.h" #include "rts/Linker.h" #include "rts/Ticky.h" #include "rts/Timer.h" #include "rts/Stable.h" #include "rts/TTY.h" #include "rts/Utils.h" #include "rts/PrimFloat.h" #include "rts/Main.h" #include "rts/StaticPtrTable.h" #include "rts/Libdw.h" #include "rts/LibdwPool.h" /* Misc stuff without a home */ DLL_IMPORT_RTS extern char **prog_argv; /* so we can get at these from Haskell */ DLL_IMPORT_RTS extern int prog_argc; DLL_IMPORT_RTS extern char *prog_name; #ifdef mingw32_HOST_OS // We need these two from Haskell too void getWin32ProgArgv(int *argc, wchar_t **argv[]); void setWin32ProgArgv(int argc, wchar_t *argv[]); #endif void stackOverflow(StgTSO* tso); void stg_exit(int n) GNU_ATTRIBUTE(__noreturn__); #ifndef mingw32_HOST_OS int stg_sig_install (int, int, void *); #endif /* ----------------------------------------------------------------------------- Ways -------------------------------------------------------------------------- */ // Returns non-zero if the RTS is a profiling version int rts_isProfiled(void); // Returns non-zero if the RTS is a dynamically-linked version int rts_isDynamic(void); /* ----------------------------------------------------------------------------- RTS Exit codes -------------------------------------------------------------------------- */ /* 255 is allegedly used by dynamic linkers to report linking failure */ #define EXIT_INTERNAL_ERROR 254 #define EXIT_DEADLOCK 253 #define EXIT_INTERRUPTED 252 #define EXIT_HEAPOVERFLOW 251 #define EXIT_KILLED 250 /* ----------------------------------------------------------------------------- Miscellaneous garbage -------------------------------------------------------------------------- */ #ifdef DEBUG #define TICK_VAR(arity) \ extern StgInt SLOW_CALLS_##arity; \ extern StgInt RIGHT_ARITY_##arity; \ extern StgInt TAGGED_PTR_##arity; extern StgInt TOTAL_CALLS; TICK_VAR(1) TICK_VAR(2) #endif /* ----------------------------------------------------------------------------- Assertions and Debuggery -------------------------------------------------------------------------- */ #define IF_RTSFLAGS(c,s) if (RtsFlags.c) { s; } #ifdef DEBUG #if IN_STG_CODE #define IF_DEBUG(c,s) if (RtsFlags[0].DebugFlags.c) { s; } #else #define IF_DEBUG(c,s) if (RtsFlags.DebugFlags.c) { s; } #endif #else #define IF_DEBUG(c,s) doNothing() #endif #ifdef DEBUG #define DEBUG_ONLY(s) s #else #define DEBUG_ONLY(s) doNothing() #endif #ifdef DEBUG #define DEBUG_IS_ON 1 #else #define DEBUG_IS_ON 0 #endif /* ----------------------------------------------------------------------------- Useful macros and inline functions -------------------------------------------------------------------------- */ #if defined(__GNUC__) #define SUPPORTS_TYPEOF #endif #if defined(SUPPORTS_TYPEOF) #define stg_min(a,b) ({typeof(a) _a = (a), _b = (b); _a <= _b ? _a : _b; }) #define stg_max(a,b) ({typeof(a) _a = (a), _b = (b); _a <= _b ? _b : _a; }) #else #define stg_min(a,b) ((a) <= (b) ? (a) : (b)) #define stg_max(a,b) ((a) <= (b) ? (b) : (a)) #endif /* -------------------------------------------------------------------------- */ #ifdef __cplusplus } #endif #endif /* RTS_H */