+++ /dev/null
-/* -----------------------------------------------------------------------------
- *
- * (c) The GHC Team, 1998-2002
- *
- * Main function for a standalone Haskell program.
- *
- * ---------------------------------------------------------------------------*/
-
-#include "PosixSource.h"
-#include "Rts.h"
-#include "RtsAPI.h"
-#include "RtsUtils.h"
-#include "RtsFlags.h"
-#include "OSThreads.h"
-#include "Storage.h" /* initStorage, exitStorage */
-#include "Schedule.h" /* initScheduler */
-#include "Stats.h" /* initStats */
-#include "STM.h" /* initSTM */
-#include "Signals.h"
-#include "RtsSignals.h"
-#include "Timer.h" /* startTimer, stopTimer */
-#include "Weak.h"
-#include "Ticky.h"
-#include "StgRun.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"
-#endif
-
-#if defined(PROFILING) || defined(DEBUG)
-# include "Profiling.h"
-# include "ProfHeap.h"
-# include "RetainerProfile.h"
-#endif
-
-#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
-
-#if defined(mingw32_HOST_OS)
-#include "win32/AsyncIO.h"
-#endif
-
-#include <stdlib.h>
-
-#ifdef HAVE_TERMIOS_H
-#include <termios.h>
-#endif
-#ifdef HAVE_SIGNAL_H
-#include <signal.h>
-#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
- -------------------------------------------------------------------------- */
-
-void
-hs_init(int *argc, char **argv[])
-{
- hs_init_count++;
- if (hs_init_count > 1) {
- // second and subsequent inits are ignored
- return;
- }
-
- /* The very first thing we do is grab the start time...just in case we're
- * collecting timing statistics.
- */
- stat_startInit();
-
-#ifdef PAR
- /*
- * 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--;
- }
-
- argv[1] = argv[0]; /* ignore the nPEs argument */
- argv++; argc--;
-#endif
-
- /* Set the RTS flags to default values. */
- initRtsFlagsDefaults();
-
- /* Call the user hook to reset defaults, if present */
- defaultsHook();
-
- /* Parse the flags, separating the RTS flags from the programs args */
- if (argc != NULL && argv != NULL) {
- setupRtsFlags(argc, *argv, &rts_argc, rts_argv);
- setProgArgv(*argc,*argv);
- }
-
-#if defined(PAR)
- /* NB: this really must be done after processing the RTS flags */
- IF_PAR_DEBUG(verbose,
- 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()).
- */
- 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 stable pointer table */
- initStablePtrTable();
-
-#if defined(DEBUG)
- /* initialise thread label table (tso->char*) */
- initThreadLabelTable();
-#endif
-
-#if defined(PROFILING) || defined(DEBUG)
- initProfiling1();
-#endif
-
- /* start the virtual timer 'subsystem'. */
- startTimer(TICK_MILLISECS);
-
- /* Initialise the stats department */
- initStats();
-
-#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();
-}
-
-// Compatibility interface
-void
-startupHaskell(int argc, char *argv[], void (*init_root)(void))
-{
- hs_init(&argc, &argv);
- if(init_root)
- hs_add_root(init_root);
-}
-
-
-/* -----------------------------------------------------------------------------
- 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.
-
- 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
-static F_ *init_stack = NULL;
-
-void
-hs_add_root(void (*init_root)(void))
-{
- bdescr *bd;
- nat init_sp;
- Capability *cap = &MainCapability;
-
- if (hs_init_count <= 0) {
- barf("hs_add_root() must be called after hs_init()");
- }
-
- /* 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_finish;
- 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_lock(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
-}
-
-/* -----------------------------------------------------------------------------
- Shutting down the RTS
- -------------------------------------------------------------------------- */
-
-void
-hs_exit(void)
-{
- if (hs_init_count <= 0) {
- errorBelch("warning: too many hs_exit()s");
- return;
- }
- hs_init_count--;
- if (hs_init_count > 0) {
- // ignore until it's the last one
- return;
- }
-
- /* start timing the shutdown */
- stat_startExit();
-
- /* stop all running tasks */
- exitScheduler();
-
-#if defined(GRAN)
- /* end_gr_simulation prints global stats if requested -- HWL */
- if (!RtsFlags.GranFlags.GranSimStats.Suppressed)
- end_gr_simulation();
-#endif
-
- /* stop the ticker */
- 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);
-
- /* 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)
- reportCCSProfiling();
-#endif
-
-#if defined(PROFILING) || defined(DEBUG)
- endProfiling();
-#endif
-
-#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
-
-#if defined(mingw32_HOST_OS)
- shutdownAsyncIO();
-#endif
-
- // Finally, free all our storage.
- freeStorage();
-}
-
-// Compatibility interfaces
-void
-shutdownHaskell(void)
-{
- hs_exit();
-}
-
-void
-shutdownHaskellAndExit(int n)
-{
- if (hs_init_count == 1) {
- OnExitHook();
- hs_exit();
-#if defined(PAR)
- /* really exit (stg_exit() would call shutdownParallelSystem() again) */
- exit(n);
-#else
- stg_exit(n);
-#endif
- }
-}
-
-/*
- * called from STG-land to exit the program
- */
-
-#ifdef PAR
-static int exit_started=rtsFalse;
-#endif
-
-void
-stg_exit(int 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, debugBelch("==-- stg_exit %d on [%x]...", n, mytid));
- shutdownParallelSystem(n);
-#endif
- exit(n);
-}
projects / ghc-hetmet.git / blobdiff