X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=ghc%2Frts%2FRtsStartup.c;h=af3d86f46313f3b971ffb2860856dca6b0a27cc0;hb=ec17c12e714993a407c8dda235dfea6ac327626f;hp=c8cc08420cf264c3bbbdb7f63b2fc3a66120cf87;hpb=50a70f642ca958cbb2dec99b0b0ae67120c9ffa9;p=ghc-hetmet.git diff --git a/ghc/rts/RtsStartup.c b/ghc/rts/RtsStartup.c index c8cc084..af3d86f 100644 --- a/ghc/rts/RtsStartup.c +++ b/ghc/rts/RtsStartup.c @@ -1,7 +1,7 @@ /* ----------------------------------------------------------------------------- - * $Id: RtsStartup.c,v 1.11 1999/05/04 10:19:19 sof Exp $ + * $Id: RtsStartup.c,v 1.46 2000/12/19 14:30:58 simonmar Exp $ * - * (c) The GHC Team, 1998-1999 + * (c) The GHC Team, 1998-2000 * * Main function for a standalone Haskell program. * @@ -15,16 +15,34 @@ #include "StablePriv.h" /* initStablePtrTable */ #include "Schedule.h" /* initScheduler */ #include "Stats.h" /* initStats */ +#include "Signals.h" +#include "Itimer.h" #include "Weak.h" #include "Ticky.h" +#include "StgRun.h" +#include "StgStartup.h" +#include "Prelude.h" /* fixupRTStoPreludeRefs */ -#if defined(PROFILING) -# include "ProfRts.h" -#elif defined(DEBUG) -# include "DebugProf.h" +#ifdef GHCI +#include "HsFFI.h" +#include "Linker.h" #endif -#ifdef PAR +#if defined(RTS_GTK_FRONTPANEL) +#include "FrontPanel.h" +#endif + +#if defined(PROFILING) || defined(DEBUG) +# include "Profiling.h" +# include "ProfHeap.h" +#endif + +#if defined(GRAN) +#include "GranSimRts.h" +#include "ParallelRts.h" +#endif + +#if defined(PAR) #include "ParInit.h" #include "Parallel.h" #include "LLC.h" @@ -35,35 +53,59 @@ */ struct RTS_FLAGS RtsFlags; -extern void startupHaskell(int argc, char *argv[]) +static int rts_has_started_up = 0; +#if defined(PAR) +static ullong startTime = 0; +#endif + +EXTFUN(__init_Prelude); +static void initModules ( void * ); + +void +setProgArgv(int argc, char *argv[]) +{ + /* 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[]) { - static int rts_has_started_up = 0; - int i; + *argc = prog_argc; + *argv = prog_argv; +} + +void +startupHaskell(int argc, char *argv[], void *init_root) +{ /* 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. + * The parallel system needs to be initialised and synchronised before + * the program is run. */ + fprintf(stderr, "startupHaskell: argv[0]=%s\n", argv[0]); 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"); */ + // IF_PAR_DEBUG(verbose, + fprintf(stderr, "[%x] I am Main Thread\n", mytid); } /* * Grab the number of PEs out of the argument vector, and @@ -73,7 +115,6 @@ extern void startupHaskell(int argc, char *argv[]) argv[1] = argv[0]; argv++; argc--; initEachPEHook(); /* HWL: hook to be execed on each PE */ - SynchroniseSystem(); #endif /* Set the RTS flags to default values. */ @@ -88,110 +129,233 @@ extern void startupHaskell(int argc, char *argv[]) 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); - */ + /* NB: this really must be done after processing the RTS flags */ + 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(); + /* initialise the object linker, if necessary */ +#ifdef GHCI + initLinker(); +#endif + /* initialise the stable pointer table */ initStablePtrTable(); #if defined(PROFILING) || defined(DEBUG) - initProfiling(); + initProfiling1(); #endif - /* Initialise the scheduler */ - initScheduler(); + /* run the per-module initialisation code */ +#if !defined(INTERPRETER) + initModules(init_root); +#endif + +#if defined(PROFILING) || defined(DEBUG) + initProfiling2(); +#endif + + /* start the ticker */ + install_vtalrm_handler(); + initialize_virtual_timer(TICK_MILLISECS); + + /* start our haskell execution tasks */ +#ifdef SMP + startTasks(); +#endif /* Initialise the stats department */ initStats(); -#if 0 +#if !defined(mingw32_TARGET_OS) && !defined(PAR) + /* Initialise the user signal handler set */ initUserSignals(); + /* 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. - - Ditto for Bool closure tbl. +#if !defined(INTERPRETER) + /* Initialise pointers from the RTS to the prelude. + Only for compiled code -- the interpreter + will call this itself later, so don't do so now. */ -#ifdef ENABLE_WIN32_DLL_SUPPORT - for(i=0;i<=255;i++) - (CHARLIKE_closure[i]).header.info = (const StgInfoTable*)&Czh_static_info; + fixupRTStoPreludeRefs(NULL); +#endif - 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 "__init_" in each + module and calls the registration functions in each of the modules + it imports. So, if we call "__init_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; + +#ifndef INTERPRETER +static void +initModules ( void *init_root ) +{ +#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_)__init_Prelude; + if (init_root != NULL) { + init_stack[init_sp++] = (F_)init_root; + } + + cap.rSp = (P_)(init_stack + init_sp); + StgRun((StgFunPtr)stg_init, &cap); +} +#endif /* !INTERPRETER */ + +/* ----------------------------------------------------------------------------- + * 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(); + stg_exit(n); } void shutdownHaskell(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 */ + /* 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) + shutdownParallelSystem(0); +#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) 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 ... - - 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); -} + rts_has_started_up=0; +} /* - * called from STG-land to exit the program cleanly + * called from STG-land to exit the program */ void stg_exit(I_ n) { -#ifdef PAR +#if 0 /* def PAR */ par_exit(n); #else - OnExitHook(); exit(n); #endif } +