/* -----------------------------------------------------------------------------
- * $Id: RtsStartup.c,v 1.21 1999/09/22 11:53:33 sof Exp $
+ * $Id: RtsStartup.c,v 1.53 2001/09/04 18:29:21 ken Exp $
*
- * (c) The GHC Team, 1998-1999
+ * (c) The GHC Team, 1998-2000
*
* Main function for a standalone Haskell program.
*
* ---------------------------------------------------------------------------*/
+#include "PosixSource.h"
#include "Rts.h"
#include "RtsAPI.h"
#include "RtsUtils.h"
#include "Itimer.h"
#include "Weak.h"
#include "Ticky.h"
+#include "StgRun.h"
+#include "StgStartup.h"
+#include "Prelude.h" /* fixupRTStoPreludeRefs */
+#include "HsFFI.h"
+#include "Linker.h"
+
+#if defined(RTS_GTK_FRONTPANEL)
+#include "FrontPanel.h"
+#endif
-#if defined(PROFILING)
-# include "ProfRts.h"
+#if defined(PROFILING) || defined(DEBUG)
+# include "Profiling.h"
# include "ProfHeap.h"
#endif
-#ifdef PAR
-#include "ParInit.h"
-#include "Parallel.h"
-#include "LLC.h"
+#if defined(GRAN)
+# include "GranSimRts.h"
+#endif
+
+#if defined(GRAN) || defined(PAR)
+# include "ParallelRts.h"
+#endif
+
+#if defined(PAR)
+# include "Parallel.h"
+# include "LLC.h"
#endif
/*
struct RTS_FLAGS RtsFlags;
static int rts_has_started_up = 0;
+#if defined(PAR)
+ullong startTime = 0;
+#endif
+
+EXTFUN(__stginit_Prelude);
+static void initModules ( void (*)(void) );
void
-startupHaskell(int argc, char *argv[])
+setProgArgv(int argc, char *argv[])
{
-#ifdef ENABLE_WIN32_DLL_SUPPORT
- int i;
-#endif
+ /* Usually this is done by startupHaskell, so we don't need to call this.
+ However, sometimes Hugs wants to change the arguments which Haskell
+ getArgs >>= ... will be fed. So you can do that by calling here
+ _after_ calling startupHaskell.
+ */
+ prog_argc = argc;
+ prog_argv = argv;
+}
+
+void
+getProgArgv(int *argc, char **argv[])
+{
+ *argc = prog_argc;
+ *argv = prog_argv;
+}
+
+void
+startupHaskell(int argc, char *argv[], void (*init_root)(void))
+{
/* To avoid repeated initialisations of the RTS */
if (rts_has_started_up)
return;
else
rts_has_started_up=1;
-#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();
+ stat_startInit();
#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"); */
+ /*
+ * The parallel system needs to be initialised and synchronised before
+ * the program is run.
+ */
+ startupParallelSystem(argv);
+
+ if (*argv[0] == '-') { /* Strip off mainPE flag argument */
+ argv++;
+ argc--;
}
- /*
- * 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[1] = argv[0]; /* ignore the nPEs argument */
argv++; argc--;
- initEachPEHook(); /* HWL: hook to be execed on each PE */
- SynchroniseSystem();
#endif
/* Set the RTS flags to default values. */
prog_argc = argc;
prog_argv = argv;
-#ifdef 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);
- */
+#if defined(PAR)
+ /* NB: this really must be done after processing the RTS flags */
+ IF_PAR_DEBUG(verbose,
+ fprintf(stderr, "==== Synchronising system (%d PEs)\n", nPEs));
+ synchroniseSystem(); // calls initParallelSystem etc
#endif /* PAR */
+ /* initialise scheduler data structures (needs to be done before
+ * initStorage()).
+ */
+ initScheduler();
+
+#if defined(GRAN)
+ /* And start GranSim profiling if required: */
+ if (RtsFlags.GranFlags.GranSimStats.Full)
+ init_gr_simulation(rts_argc, rts_argv, prog_argc, prog_argv);
+#elif defined(PAR)
+ /* And start GUM profiling if required: */
+ if (RtsFlags.ParFlags.ParStats.Full)
+ init_gr_simulation(rts_argc, rts_argv, prog_argc, prog_argv);
+#endif /* PAR || GRAN */
+
/* initialize the storage manager */
initStorage();
initStablePtrTable();
#if defined(PROFILING) || defined(DEBUG)
- initProfiling();
+ initProfiling1();
+#endif
+
+ /* run the per-module initialisation code */
+ initModules(init_root);
+
+#if defined(PROFILING) || defined(DEBUG)
+ initProfiling2();
#endif
/* start the ticker */
install_vtalrm_handler();
initialize_virtual_timer(TICK_MILLISECS);
- /* Initialise the scheduler */
- initScheduler();
+ /* start our haskell execution tasks */
+#ifdef SMP
+ startTasks();
+#endif
/* Initialise the stats department */
initStats();
#if !defined(mingw32_TARGET_OS) && !defined(PAR)
/* Initialise the user signal handler set */
initUserSignals();
- /* Set up handler to run on SIGINT */
- init_shutdown_handler();
+ /* Set up handler to run on SIGINT, etc. */
+ init_default_handlers();
#endif
- /* When the RTS and Prelude live in separate DLLs,
- we need to patch up the char- and int-like tables
- that the RTS keep after both DLLs have been loaded,
- filling in the tables with references to where the
- static info tables have been loaded inside the running
- process.
- */
-#ifdef ENABLE_WIN32_DLL_SUPPORT
- for(i=0;i<=255;i++)
- (CHARLIKE_closure[i]).header.info = (const StgInfoTable*)&Czh_static_info;
-
- for(i=0;i<=32;i++)
- (INTLIKE_closure[i]).header.info = (const StgInfoTable*)&Izh_static_info;
-
+#ifdef RTS_GTK_FRONTPANEL
+ if (RtsFlags.GcFlags.frontpanel) {
+ initFrontPanel();
+ }
#endif
+
/* Record initialization times */
- end_init();
+ stat_endInit();
}
-/*
+/* -----------------------------------------------------------------------------
+ Per-module initialisation
+
+ This process traverses all the compiled modules in the program
+ starting with "Main", and performing per-module initialisation for
+ each one.
+
+ So far, two things happen at initialisation time:
+
+ - we register stable names for each foreign-exported function
+ in that module. This prevents foreign-exported entities, and
+ things they depend on, from being garbage collected.
+
+ - we supply a unique integer to each statically declared cost
+ centre and cost centre stack in the program.
+
+ The code generator inserts a small function "__stginit_<module>" in each
+ module and calls the registration functions in each of the modules it
+ imports. So, if we call "__stginit_PrelMain", each reachable module in the
+ program will be registered (because PrelMain.mainIO calls Main.main).
+
+ The init* functions are compiled in the same way as STG code,
+ i.e. without normal C call/return conventions. Hence we must use
+ StgRun to call this stuff.
+ -------------------------------------------------------------------------- */
+
+/* The init functions use an explicit stack...
+ */
+#define INIT_STACK_SIZE (BLOCK_SIZE * 4)
+F_ *init_stack = NULL;
+nat init_sp = 0;
+
+static void
+initModules ( void (*init_root)(void) )
+{
+#ifdef SMP
+ Capability cap;
+#else
+#define cap MainRegTable
+#endif
+
+ init_sp = 0;
+ init_stack = (F_ *)allocate(INIT_STACK_SIZE / sizeof(W_));
+ init_stack[init_sp++] = (F_)stg_init_ret;
+ init_stack[init_sp++] = (F_)__stginit_Prelude;
+ if (init_root != NULL) {
+ init_stack[init_sp++] = (F_)init_root;
+ }
+
+ cap.rSp = (P_)(init_stack + init_sp);
+ StgRun((StgFunPtr)stg_init, &cap);
+}
+
+/* -----------------------------------------------------------------------------
* Shutting down the RTS - two ways of doing this, one which
* calls exit(), one that doesn't.
*
* (shutdownHaskellAndExit() is called by System.exitWith).
+ * -----------------------------------------------------------------------------
*/
void
shutdownHaskellAndExit(int n)
{
OnExitHook();
shutdownHaskell();
+#if defined(PAR)
+ /* really exit (stg_exit() would call shutdownParallelSystem() again) */
+ exit(n);
+#else
stg_exit(n);
+#endif
}
void
if (!rts_has_started_up)
return;
+ /* start timing the shutdown */
+ stat_startExit();
+
+#if !defined(GRAN)
/* Finalize any remaining weak pointers */
finalizeWeakPointersNow();
+#endif
#if defined(GRAN)
- #error FixMe.
- if (!RTSflags.GranFlags.granSimStats_suppressed)
+ /* end_gr_simulation prints global stats if requested -- HWL */
+ if (!RtsFlags.GranFlags.GranSimStats.Suppressed)
end_gr_simulation();
#endif
- /* clean up things from the storage manager's point of view */
- exitStorage();
+ /* stop all running tasks */
+ exitScheduler();
/* stop the ticker */
initialize_virtual_timer(0);
+ /* reset the standard file descriptors to blocking mode */
+ resetNonBlockingFd(0);
+ resetNonBlockingFd(1);
+ resetNonBlockingFd(2);
+
+#if defined(PAR)
+ /* controlled exit; good thread! */
+ shutdownParallelSystem(0);
+
+ /* global statistics in parallel system */
+ PAR_TICKY_PAR_END();
+#endif
+
+ /* stop timing the shutdown, we're about to print stats */
+ stat_endExit();
+
+ /* clean up things from the storage manager's point of view.
+ * also outputs the stats (+RTS -s) info.
+ */
+ exitStorage();
+
+#ifdef RTS_GTK_FRONTPANEL
+ if (RtsFlags.GcFlags.frontpanel) {
+ stopFrontPanel();
+ }
+#endif
+
#if defined(PROFILING) || defined(DEBUG)
endProfiling();
#endif
#if defined(PROFILING)
- report_ccs_profiling( );
+ report_ccs_profiling();
#endif
#if defined(TICKY_TICKY)
rts_has_started_up=0;
}
-
/*
* called from STG-land to exit the program
*/
+#ifdef PAR
+static int exit_started=rtsFalse;
+#endif
+
void
stg_exit(I_ n)
-{
+{
#ifdef PAR
- par_exit(n);
-#else
- exit(n);
+ /* HACK: avoid a loop when exiting due to a stupid error */
+ if (exit_started)
+ return;
+ exit_started=rtsTrue;
+
+ IF_PAR_DEBUG(verbose, fprintf(stderr,"==-- stg_exit %d on [%x]...", n, mytid));
+ shutdownParallelSystem(n);
#endif
+ exit(n);
}
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