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/* -----------------------------------------------------------------------------
* $Id: RtsStartup.c,v 1.6 1999/02/05 16:02:50 simonm Exp $
*
* (c) The GHC Team, 1998-1999
*
* Main function for a standalone Haskell program.
*
* ---------------------------------------------------------------------------*/
#include "Rts.h"
#include "RtsAPI.h"
#include "RtsUtils.h"
#include "RtsFlags.h"
#include "Storage.h" /* initStorage, exitStorage */
#include "StablePriv.h" /* initStablePtrTable */
#include "Schedule.h" /* initScheduler */
#include "Stats.h" /* initStats */
#include "Weak.h"
#include "Ticky.h"
#if defined(PROFILING)
# include "ProfRts.h"
#elif defined(DEBUG)
# include "DebugProf.h"
#endif
#ifdef PAR
#include "ParInit.h"
#include "Parallel.h"
#include "LLC.h"
#endif
/*
* Flag Structure
*/
struct RTS_FLAGS RtsFlags;
extern void startupHaskell(int argc, char *argv[])
{
#if defined(PAR)
int nPEs = 0; /* Number of PEs */
#endif
/* The very first thing we do is grab the start time...just in case we're
* collecting timing statistics.
*/
start_time();
#ifdef PAR
/*
*The parallel system needs to be initialised and synchronised before
*the program is run.
*/
if (*argv[0] == '-') { /* Look to see whether we're the Main Thread */
IAmMainThread = rtsTrue;
argv++; argc--; /* Strip off flag argument */
/* fprintf(stderr, "I am Main Thread\n"); */
}
/*
* Grab the number of PEs out of the argument vector, and
* eliminate it from further argument processing.
*/
nPEs = atoi(argv[1]);
argv[1] = argv[0];
argv++; argc--;
initEachPEHook(); /* HWL: hook to be execed on each PE */
SynchroniseSystem();
#endif
/* Set the RTS flags to default values. */
initRtsFlagsDefaults();
/* Call the user hook to reset defaults, if present */
defaultsHook();
/* Parse the flags, separating the RTS flags from the programs args */
setupRtsFlags(&argc, argv, &rts_argc, rts_argv);
prog_argc = argc;
prog_argv = argv;
#if defined(PAR)
/* Initialise the parallel system -- before initHeap! */
initParallelSystem();
/* And start GranSim profiling if required: omitted for now
*if (Rtsflags.ParFlags.granSimStats)
*init_gr_profiling(rts_argc, rts_argv, prog_argc, prog_argv);
*/
#endif /* PAR */
/* initialize the storage manager */
initStorage();
/* initialise the stable pointer table */
initStablePtrTable();
#if defined(PROFILING) || defined(DEBUG)
initProfiling();
#endif
/* Initialise the scheduler */
initScheduler();
/* Initialise the stats department */
initStats();
#if 0
initUserSignals();
#endif
/* Record initialization times */
end_init();
}
void
shutdownHaskell(void)
{
/* Finalise any remaining weak pointers */
finaliseWeakPointersNow();
#if defined(GRAN)
#error FixMe.
if (!RTSflags.GranFlags.granSimStats_suppressed)
end_gr_simulation();
#endif
/* clean up things from the storage manager's point of view */
exitStorage();
#if defined(PROFILING) || defined(DEBUG)
endProfiling();
#endif
#if defined(PROFILING)
report_ccs_profiling( );
#endif
#if defined(TICKY_TICKY)
if (RtsFlags.TickyFlags.showTickyStats) PrintTickyInfo();
#endif
/*
This fflush is important, because: if "main" just returns,
then we will end up in pre-supplied exit code that will close
streams and flush buffers. In particular we have seen: it
will close fd 0 (stdin), then flush fd 1 (stdout), then <who
cares>...
But if you're playing with sockets, that "close fd 0" might
suggest to the daemon that all is over, only to be presented
with more stuff on "fd 1" at the flush.
The fflush avoids this sad possibility.
*/
fflush(stdout);
}
/*
* called from STG-land to exit the program cleanly
*/
void
stg_exit(I_ n)
{
#ifdef PAR
par_exit(n);
#else
OnExitHook();
exit(n);
#endif
}
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