X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Frts%2FRtsStartup.c;h=27ee47ca09f8eeecb307cad6fe6970150833851f;hb=56e57eb56cb12c5d85dcddd3118069896e2e2471;hp=305c6eb66d7097641e05f90b90cfd526051e42fb;hpb=4d12e4529a0f4ec66de1fe217195acdab66f31f1;p=ghc-hetmet.git diff --git a/ghc/rts/RtsStartup.c b/ghc/rts/RtsStartup.c index 305c6eb..27ee47c 100644 --- a/ghc/rts/RtsStartup.c +++ b/ghc/rts/RtsStartup.c @@ -1,12 +1,13 @@ /* ----------------------------------------------------------------------------- - * $Id: RtsStartup.c,v 1.28 2000/02/07 20:57:58 simonmar Exp $ + * $Id: RtsStartup.c,v 1.63 2002/05/11 00:16:12 sof 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" @@ -19,21 +20,33 @@ #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) || defined(DEBUG) -# include "ProfRts.h" +# include "Profiling.h" # include "ProfHeap.h" +# include "RetainerProfile.h" #endif #if defined(GRAN) -#include "GranSimRts.h" -#include "ParallelRts.h" +# include "GranSimRts.h" +#endif + +#if defined(GRAN) || defined(PAR) +# include "ParallelRts.h" #endif #if defined(PAR) -#include "ParInit.h" -#include "Parallel.h" -#include "LLC.h" +# include "Parallel.h" +# include "LLC.h" #endif /* @@ -43,47 +56,65 @@ struct RTS_FLAGS RtsFlags; static int rts_has_started_up = 0; #if defined(PAR) -static ullong startTime = 0; +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; +} - /* To avoid repeated initialisations of the RTS */ - if (rts_has_started_up) - return; - else - rts_has_started_up=1; +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) { + /* RTS is up and running, so only run the per-module initialisation code */ + if (init_root) { + initModules(init_root); + } + return; + } else { + rts_has_started_up=1; + } /* 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. - */ - 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 */ - // IF_PAR_DEBUG(verbose, - fprintf(stderr, "[%x] I am Main Thread\n", mytid); + /* + * 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 */ #endif /* Set the RTS flags to default values. */ @@ -99,8 +130,9 @@ startupHaskell(int argc, char *argv[]) #if defined(PAR) /* NB: this really must be done after processing the RTS flags */ - fprintf(stderr, "Synchronising system (%d PEs)\n", nPEs); - SynchroniseSystem(); // calls initParallelSystem etc + 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 @@ -125,59 +157,114 @@ startupHaskell(int argc, char *argv[]) initStablePtrTable(); #if defined(PROFILING) || defined(DEBUG) - initProfiling(); + initProfiling1(); #endif - /* start the ticker */ - install_vtalrm_handler(); - initialize_virtual_timer(TICK_MILLISECS); + /* run the per-module initialisation code */ + initModules(init_root); - /* start our haskell execution tasks */ -#ifdef SMP - startTasks(); +#if defined(PROFILING) || defined(DEBUG) + initProfiling2(); #endif + /* start the virtual timer 'subsystem'. */ + startVirtTimer(TICK_MILLISECS); + /* 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. */ + initDefaultHandlers(); #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_" 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_BLOCKS 4 +F_ *init_stack = NULL; +nat init_sp = 0; + +static void +initModules ( void (*init_root)(void) ) +{ + bdescr *bd; +#ifdef SMP + Capability cap; +#else +#define cap MainCapability +#endif + + init_sp = 0; + bd = allocGroup(INIT_STACK_BLOCKS); + init_stack = (F_ *)bd->start; + 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.r.rSp = (P_)(init_stack + init_sp); + StgRun((StgFunPtr)stg_init, &cap.r); + + freeGroup(bd); +} + +/* ----------------------------------------------------------------------------- * 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 @@ -185,10 +272,14 @@ shutdownHaskell(void) { if (!rts_has_started_up) return; - + rts_has_started_up=0; + /* start timing the shutdown */ stat_startExit(); + /* stop all running tasks */ + exitScheduler(); + #if !defined(GRAN) /* Finalize any remaining weak pointers */ finalizeWeakPointersNow(); @@ -200,17 +291,22 @@ shutdownHaskell(void) end_gr_simulation(); #endif - /* stop all running tasks */ - exitScheduler(); - /* stop the ticker */ - initialize_virtual_timer(0); + stopVirtTimer(); /* 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(); @@ -219,37 +315,52 @@ shutdownHaskell(void) */ exitStorage(); -#if defined(PROFILING) || defined(DEBUG) - endProfiling(); +#ifdef RTS_GTK_FRONTPANEL + if (RtsFlags.GcFlags.frontpanel) { + stopFrontPanel(); + } #endif #if defined(PROFILING) - report_ccs_profiling( ); + reportCCSProfiling(); #endif -#if defined(TICKY_TICKY) - if (RtsFlags.TickyFlags.showTickyStats) PrintTickyInfo(); +#if defined(PROFILING) || defined(DEBUG) + endProfiling(); #endif - rts_has_started_up=0; - -#if defined(PAR) - shutdownParallelSystem(0); +#ifdef PROFILING + // Originally, this was in report_ccs_profiling(). Now, retainer + // profiling might tack some extra stuff on to the end of this file + // during endProfiling(). + fclose(prof_file); #endif +#if defined(TICKY_TICKY) + if (RtsFlags.TickyFlags.showTickyStats) PrintTickyInfo(); +#endif } /* * called from STG-land to exit the program */ +#ifdef PAR +static int exit_started=rtsFalse; +#endif + void stg_exit(I_ n) -{ -#if 0 /* def PAR */ - par_exit(n); -#else - exit(n); +{ +#ifdef PAR + /* 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); }