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/* -----------------------------------------------------------------------------
*
* (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://hackage.haskell.org/trac/ghc/wiki/Commentary/SourceTree/Includes
*
* ---------------------------------------------------------------------------*/
#ifndef RTS_H
#define RTS_H
#ifdef __cplusplus
extern "C" {
#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
/* Assume that a flexible array member at the end of a struct
* can be defined thus: T arr[]; */
#define FLEXIBLE_ARRAY
#else
/* Assume that it must be defined thus: T arr[0]; */
#define FLEXIBLE_ARRAY 0
#endif
#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(mingw32_HOST_OS)
#define RTS_PRIVATE GNUC3_ATTRIBUTE(visibility("hidden"))
#else
#define RTS_PRIVATE /* disabled: RTS_PRIVATE */
#endif
#if __GNUC__ > 4
#define BEGIN_RTS_PRIVATE #pragma GCC visibility push(hidden)
#define END_RTS_PRIVATE #pragma GCC visibility pop
#else
#define BEGIN_RTS_PRIVATE /* disabled: BEGIN_RTS_PRIVATE */
#define END_RTS_PRIVATE /* disabled: END_RTS_PRIVATE */
#endif
#if __GNUC__ > 4
#define RTS_UNLIKELY(p) __builtin_expect((p),0)
#else
#define RTS_UNLIKELY(p) p
#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__)
#ifndef DEBUG
#define ASSERT(predicate) /* nothing */
#else
#define ASSERT(predicate) CHECK(predicate)
#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
/*
* Getting printf formats right for platform-dependent typedefs
*/
#if SIZEOF_LONG == 8
#define FMT_Word64 "lu"
#define FMT_Int64 "ld"
#else
#define FMT_Word64 "llu"
#define FMT_Int64 "lld"
#endif
/* -----------------------------------------------------------------------------
Include everything STG-ish
-------------------------------------------------------------------------- */
/* System headers: stdlib.h is eeded 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 <stdlib.h>
#include "rts/Config.h"
/* Global constaints */
#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"
/* Storage format definitions */
#include "rts/storage/FunTypes.h"
#include "rts/storage/InfoTables.h"
#include "rts/storage/Closures.h"
#include "rts/storage/Liveness.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/SMPClosureOps.h"
#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/Hooks.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/Globals.h"
#include "rts/IOManager.h"
#include "rts/Linker.h"
#include "rts/Threads.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"
/* 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;
void stackOverflow(void);
void stg_exit(int n) GNU_ATTRIBUTE(__noreturn__);
#ifndef mingw32_HOST_OS
int stg_sig_install (int, int, void *);
#endif
/* -----------------------------------------------------------------------------
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
-------------------------------------------------------------------------- */
/* declarations for runtime flags/values */
#define MAX_RTS_ARGS 32
#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
/* -----------------------------------------------------------------------------
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 */
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