1 /* -----------------------------------------------------------------------------
2 * $Id: RtsStartup.c,v 1.19 1999/09/13 11:02:08 sof Exp $
4 * (c) The GHC Team, 1998-1999
6 * Main function for a standalone Haskell program.
8 * ---------------------------------------------------------------------------*/
14 #include "Storage.h" /* initStorage, exitStorage */
15 #include "StablePriv.h" /* initStablePtrTable */
16 #include "Schedule.h" /* initScheduler */
17 #include "Stats.h" /* initStats */
23 #if defined(PROFILING)
26 # include "DebugProf.h"
38 struct RTS_FLAGS RtsFlags;
40 static int rts_has_started_up = 0;
43 startupHaskell(int argc, char *argv[])
45 #ifdef ENABLE_WIN32_DLL_SUPPORT
49 /* To avoid repeated initialisations of the RTS */
50 if (rts_has_started_up)
56 int nPEs = 0; /* Number of PEs */
59 /* The very first thing we do is grab the start time...just in case we're
60 * collecting timing statistics.
66 *The parallel system needs to be initialised and synchronised before
69 if (*argv[0] == '-') { /* Look to see whether we're the Main Thread */
70 IAmMainThread = rtsTrue;
71 argv++; argc--; /* Strip off flag argument */
72 /* fprintf(stderr, "I am Main Thread\n"); */
75 * Grab the number of PEs out of the argument vector, and
76 * eliminate it from further argument processing.
81 initEachPEHook(); /* HWL: hook to be execed on each PE */
85 /* Set the RTS flags to default values. */
86 initRtsFlagsDefaults();
88 /* Call the user hook to reset defaults, if present */
91 /* Parse the flags, separating the RTS flags from the programs args */
92 setupRtsFlags(&argc, argv, &rts_argc, rts_argv);
97 /* Initialise the parallel system -- before initHeap! */
99 /* And start GranSim profiling if required: omitted for now
100 *if (Rtsflags.ParFlags.granSimStats)
101 *init_gr_profiling(rts_argc, rts_argv, prog_argc, prog_argv);
105 /* initialize the storage manager */
108 /* initialise the stable pointer table */
109 initStablePtrTable();
111 #if defined(PROFILING) || defined(DEBUG)
115 /* start the ticker */
116 install_vtalrm_handler();
117 initialize_virtual_timer(TICK_MILLISECS);
119 /* Initialise the scheduler */
122 /* Initialise the stats department */
125 /* Initialise the user signal handler set */
126 #if !defined(mingw32_TARGET_OS) && !defined(PAR)
130 /* When the RTS and Prelude live in separate DLLs,
131 we need to patch up the char- and int-like tables
132 that the RTS keep after both DLLs have been loaded,
133 filling in the tables with references to where the
134 static info tables have been loaded inside the running
137 #ifdef ENABLE_WIN32_DLL_SUPPORT
139 (CHARLIKE_closure[i]).header.info = (const StgInfoTable*)&Czh_static_info;
142 (INTLIKE_closure[i]).header.info = (const StgInfoTable*)&Izh_static_info;
145 /* Record initialization times */
150 * Shutting down the RTS - two ways of doing this, one which
151 * calls exit(), one that doesn't.
153 * (shutdownHaskellAndExit() is called by System.exitWith).
156 shutdownHaskellAndExit(int n)
164 shutdownHaskell(void)
166 if (!rts_has_started_up)
169 /* Finalize any remaining weak pointers */
170 finalizeWeakPointersNow();
174 if (!RTSflags.GranFlags.granSimStats_suppressed)
178 /* clean up things from the storage manager's point of view */
181 /* stop the ticker */
182 initialize_virtual_timer(0);
184 #if defined(PROFILING) || defined(DEBUG)
188 #if defined(PROFILING)
189 report_ccs_profiling( );
192 #if defined(TICKY_TICKY)
193 if (RtsFlags.TickyFlags.showTickyStats) PrintTickyInfo();
196 rts_has_started_up=0;
201 * called from STG-land to exit the program