X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Frts%2FRtsStartup.c;h=faf45967b062a8c28d02a86094f86a290a6e0d66;hb=eba7b660a36878cd8d926845807913d7ec5734c9;hp=6826f5ce574138f5d1600cb3546c86c1aa3f7578;hpb=b1c5d8c6dc8b08e6963897eadf70d8bcbfa8fa7b;p=ghc-hetmet.git diff --git a/ghc/rts/RtsStartup.c b/ghc/rts/RtsStartup.c index 6826f5c..faf4596 100644 --- a/ghc/rts/RtsStartup.c +++ b/ghc/rts/RtsStartup.c @@ -1,5 +1,4 @@ /* ----------------------------------------------------------------------------- - * $Id: RtsStartup.c,v 1.69 2003/01/29 09:54:33 simonmar Exp $ * * (c) The GHC Team, 1998-2002 * @@ -12,20 +11,22 @@ #include "RtsAPI.h" #include "RtsUtils.h" #include "RtsFlags.h" +#include "OSThreads.h" #include "Storage.h" /* initStorage, exitStorage */ -#include "StablePriv.h" /* initStablePtrTable */ #include "Schedule.h" /* initScheduler */ #include "Stats.h" /* initStats */ +#include "STM.h" /* initSTM */ #include "Signals.h" -#include "Itimer.h" +#include "RtsSignals.h" +#include "Timer.h" /* startTimer, stopTimer */ #include "Weak.h" #include "Ticky.h" #include "StgRun.h" -#include "StgStartup.h" #include "Prelude.h" /* fixupRTStoPreludeRefs */ #include "HsFFI.h" #include "Linker.h" #include "ThreadLabels.h" +#include "BlockAlloc.h" #if defined(RTS_GTK_FRONTPANEL) #include "FrontPanel.h" @@ -50,14 +51,70 @@ # include "LLC.h" #endif +#if defined(mingw32_HOST_OS) +#include "win32/AsyncIO.h" +#endif + #include -// Flag Structure -struct RTS_FLAGS RtsFlags; +#ifdef HAVE_TERMIOS_H +#include +#endif +#ifdef HAVE_SIGNAL_H +#include +#endif // Count of how many outstanding hs_init()s there have been. static int hs_init_count = 0; +// Here we save the terminal settings on the standard file +// descriptors, if we need to change them (eg. to support NoBuffering +// input). +static void *saved_termios[3] = {NULL,NULL,NULL}; + +void* +__hscore_get_saved_termios(int fd) +{ + return (0 <= fd && fd < (int)(sizeof(saved_termios) / sizeof(*saved_termios))) ? + saved_termios[fd] : NULL; +} + +void +__hscore_set_saved_termios(int fd, void* ts) +{ + if (0 <= fd && fd < (int)(sizeof(saved_termios) / sizeof(*saved_termios))) { + saved_termios[fd] = ts; + } +} + +/* ----------------------------------------------------------------------------- + Initialise floating point unit on x86 (currently disabled. why?) + (see comment in ghc/compiler/nativeGen/MachInstrs.lhs). + -------------------------------------------------------------------------- */ + +#define X86_INIT_FPU 0 + +#if X86_INIT_FPU +static void +x86_init_fpu ( void ) +{ + __volatile unsigned short int fpu_cw; + + // Grab the control word + __asm __volatile ("fnstcw %0" : "=m" (fpu_cw)); + +#if 0 + printf("fpu_cw: %x\n", fpu_cw); +#endif + + // Set bits 8-9 to 10 (64-bit precision). + fpu_cw = (fpu_cw & 0xfcff) | 0x0200; + + // Store the new control word back + __asm __volatile ("fldcw %0" : : "m" (fpu_cw)); +} +#endif + /* ----------------------------------------------------------------------------- Starting up the RTS -------------------------------------------------------------------------- */ @@ -101,17 +158,19 @@ hs_init(int *argc, char **argv[]) /* Parse the flags, separating the RTS flags from the programs args */ if (argc != NULL && argv != NULL) { setupRtsFlags(argc, *argv, &rts_argc, rts_argv); - prog_argc = *argc; - prog_argv = *argv; + setProgArgv(*argc,*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)); + debugBelch("==== Synchronising system (%d PEs)\n", nPEs)); synchroniseSystem(); // calls initParallelSystem etc #endif /* PAR */ + /* Perform initialisation of adjustor thunk layer. */ + initAdjustor(); + /* initialise scheduler data structures (needs to be done before * initStorage()). */ @@ -133,36 +192,42 @@ hs_init(int *argc, char **argv[]) /* initialise the stable pointer table */ initStablePtrTable(); +#if defined(DEBUG) /* initialise thread label table (tso->char*) */ initThreadLabelTable(); - -#if defined(PROFILING) || defined(DEBUG) - initProfiling1(); #endif #if defined(PROFILING) || defined(DEBUG) - initProfiling2(); + initProfiling1(); #endif /* start the virtual timer 'subsystem'. */ - startVirtTimer(TICK_MILLISECS); + startTimer(TICK_MILLISECS); /* Initialise the stats department */ initStats(); -#if !defined(mingw32_TARGET_OS) && !defined(PAR) +#if defined(RTS_USER_SIGNALS) /* Initialise the user signal handler set */ initUserSignals(); /* Set up handler to run on SIGINT, etc. */ initDefaultHandlers(); #endif +#if defined(mingw32_HOST_OS) + startupAsyncIO(); +#endif + #ifdef RTS_GTK_FRONTPANEL if (RtsFlags.GcFlags.frontpanel) { initFrontPanel(); } #endif +#if X86_INIT_FPU + x86_init_fpu(); +#endif + /* Record initialization times */ stat_endInit(); } @@ -172,36 +237,12 @@ void startupHaskell(int argc, char *argv[], void (*init_root)(void)) { hs_init(&argc, &argv); - hs_add_root(init_root); + if(init_root) + hs_add_root(init_root); } /* ----------------------------------------------------------------------------- - Getting/Setting the program's arguments. - - These are used by System.Environment. - -------------------------------------------------------------------------- */ - -void -getProgArgv(int *argc, char **argv[]) -{ - *argc = prog_argc; - *argv = prog_argv; -} - -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; -} - -/* ----------------------------------------------------------------------------- Per-module initialisation This process traverses all the compiled modules in the program @@ -235,29 +276,33 @@ void hs_add_root(void (*init_root)(void)) { bdescr *bd; -#ifdef SMP - Capability cap; -#else -#define cap MainCapability -#endif nat init_sp; + Capability *cap = &MainCapability; if (hs_init_count <= 0) { barf("hs_add_root() must be called after hs_init()"); } - init_sp = 0; - bd = allocGroup(INIT_STACK_BLOCKS); + /* The initialisation stack grows downward, with sp pointing + to the last occupied word */ + init_sp = INIT_STACK_BLOCKS*BLOCK_SIZE_W; + bd = allocGroup_lock(INIT_STACK_BLOCKS); init_stack = (F_ *)bd->start; - init_stack[init_sp++] = (F_)stg_init_ret; + init_stack[--init_sp] = (F_)stg_init_finish; if (init_root != NULL) { - init_stack[init_sp++] = (F_)init_root; + init_stack[--init_sp] = (F_)init_root; } - cap.r.rSp = (P_)(init_stack + init_sp); - StgRun((StgFunPtr)stg_init, &cap.r); + cap->r.rSp = (P_)(init_stack + init_sp); + StgRun((StgFunPtr)stg_init, &cap->r); + + freeGroup_lock(bd); - freeGroup(bd); +#if defined(PROFILING) || defined(DEBUG) + // This must be done after module initialisation. + // ToDo: make this work in the presence of multiple hs_add_root()s. + initProfiling2(); +#endif } /* ----------------------------------------------------------------------------- @@ -282,11 +327,6 @@ hs_exit(void) /* stop all running tasks */ exitScheduler(); -#if !defined(GRAN) - /* Finalize any remaining weak pointers */ - finalizeWeakPointersNow(); -#endif - #if defined(GRAN) /* end_gr_simulation prints global stats if requested -- HWL */ if (!RtsFlags.GranFlags.GranSimStats.Suppressed) @@ -294,13 +334,34 @@ hs_exit(void) #endif /* stop the ticker */ - stopVirtTimer(); + stopTimer(); /* reset the standard file descriptors to blocking mode */ resetNonBlockingFd(0); resetNonBlockingFd(1); resetNonBlockingFd(2); +#if HAVE_TERMIOS_H + // Reset the terminal settings on the standard file descriptors, + // if we changed them. See System.Posix.Internals.tcSetAttr for + // more details, including the reason we termporarily disable + // SIGTTOU here. + { + int fd; + sigset_t sigset, old_sigset; + sigemptyset(&sigset); + sigaddset(&sigset, SIGTTOU); + sigprocmask(SIG_BLOCK, &sigset, &old_sigset); + for (fd = 0; fd <= 2; fd++) { + struct termios* ts = (struct termios*)__hscore_get_saved_termios(fd); + if (ts != NULL) { + tcsetattr(fd,TCSANOW,ts); + } + } + sigprocmask(SIG_SETMASK, &old_sigset, NULL); + } +#endif + #if defined(PAR) /* controlled exit; good thread! */ shutdownParallelSystem(0); @@ -341,6 +402,10 @@ hs_exit(void) #if defined(TICKY_TICKY) if (RtsFlags.TickyFlags.showTickyStats) PrintTickyInfo(); #endif + +#if defined(mingw32_HOST_OS) + shutdownAsyncIO(); +#endif } // Compatibility interfaces @@ -382,9 +447,8 @@ stg_exit(int n) return; exit_started=rtsTrue; - IF_PAR_DEBUG(verbose, fprintf(stderr,"==-- stg_exit %d on [%x]...", n, mytid)); + IF_PAR_DEBUG(verbose, debugBelch("==-- stg_exit %d on [%x]...", n, mytid)); shutdownParallelSystem(n); #endif exit(n); } -