X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/326b05e39df78c03a667485573aed70a9080cab0..34bf74105ec19d0a6e650fa4cf3684f6ff94ac2d:/miniperlmain.c diff --git a/miniperlmain.c b/miniperlmain.c index 27ad541..260369e 100644 --- a/miniperlmain.c +++ b/miniperlmain.c @@ -1,53 +1,156 @@ +/* miniperlmain.c + * + * Copyright (C) 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, + * 2004, 2005, 2006, 2007, by Larry Wall and others + * + * You may distribute under the terms of either the GNU General Public + * License or the Artistic License, as specified in the README file. + * + */ + /* - * "The Road goes ever on and on, down from the door where it began." + * The Road goes ever on and on + * Down from the door where it began. + * + * [Bilbo on p.35 of _The Lord of the Rings_, I/i: "A Long-Expected Party"] + * [Frodo on p.73 of _The Lord of the Rings_, I/iii: "Three Is Company"] + */ + +/* This file contains the main() function for the perl interpreter. + * Note that miniperlmain.c contains main() for the 'miniperl' binary, + * while perlmain.c contains main() for the 'perl' binary. + * + * Miniperl is like perl except that it does not support dynamic loading, + * and in fact is used to build the dynamic modules needed for the 'real' + * perl executable. */ #ifdef OEMVS -#pragma runopts(HEAP(1M,32K,ANYWHERE,KEEP,8K,4K)) +#ifdef MYMALLOC +/* sbrk is limited to first heap segment so make it big */ +#pragma runopts(HEAP(8M,500K,ANYWHERE,KEEP,8K,4K) STACK(,,ANY,) ALL31(ON)) +#else +#pragma runopts(HEAP(2M,500K,ANYWHERE,KEEP,8K,4K) STACK(,,ANY,) ALL31(ON)) +#endif #endif #include "EXTERN.h" +#define PERL_IN_MINIPERLMAIN_C #include "perl.h" -static void xs_init _((void)); +static void xs_init (pTHX); static PerlInterpreter *my_perl; +#if defined (atarist) +/* The Atari operating system doesn't have a dynamic stack. The + stack size is determined from this value. */ +long _stksize = 64 * 1024; +#endif + +#if defined(PERL_GLOBAL_STRUCT_PRIVATE) +/* The static struct perl_vars* may seem counterproductive since the + * whole idea PERL_GLOBAL_STRUCT_PRIVATE was to avoid statics, but note + * that this static is not in the shared perl library, the globals PL_Vars + * and PL_VarsPtr will stay away. */ +static struct perl_vars* my_plvarsp; +struct perl_vars* Perl_GetVarsPrivate(void) { return my_plvarsp; } +#endif + +#ifdef NO_ENV_ARRAY_IN_MAIN +extern char **environ; int -#ifdef CAN_PROTOTYPE -main(int argc, char **argv, char **env) +main(int argc, char **argv) #else -main(argc, argv, env) -int argc; -char **argv; -char **env; +int +main(int argc, char **argv, char **env) #endif { - int exitstatus; + dVAR; + int exitstatus, i; +#ifdef PERL_GLOBAL_STRUCT + struct perl_vars *plvarsp = init_global_struct(); +# ifdef PERL_GLOBAL_STRUCT_PRIVATE + my_vars = my_plvarsp = plvarsp; +# endif +#endif /* PERL_GLOBAL_STRUCT */ +#ifndef NO_ENV_ARRAY_IN_MAIN + PERL_UNUSED_ARG(env); +#endif +#ifndef PERL_USE_SAFE_PUTENV + PL_use_safe_putenv = FALSE; +#endif /* PERL_USE_SAFE_PUTENV */ - PERL_SYS_INIT(&argc,&argv); + /* if user wants control of gprof profiling off by default */ + /* noop unless Configure is given -Accflags=-DPERL_GPROF_CONTROL */ + PERL_GPROF_MONCONTROL(0); - perl_init_i18nl10n(1); +#ifdef NO_ENV_ARRAY_IN_MAIN + PERL_SYS_INIT3(&argc,&argv,&environ); +#else + PERL_SYS_INIT3(&argc,&argv,&env); +#endif - if (!do_undump) { +#if defined(USE_ITHREADS) + /* XXX Ideally, this should really be happening in perl_alloc() or + * perl_construct() to keep libperl.a transparently fork()-safe. + * It is currently done here only because Apache/mod_perl have + * problems due to lack of a call to cancel pthread_atfork() + * handlers when shared objects that contain the handlers may + * be dlclose()d. This forces applications that embed perl to + * call PTHREAD_ATFORK() explicitly, but if and only if it hasn't + * been called at least once before in the current process. + * --GSAR 2001-07-20 */ + PTHREAD_ATFORK(Perl_atfork_lock, + Perl_atfork_unlock, + Perl_atfork_unlock); +#endif + + if (!PL_do_undump) { my_perl = perl_alloc(); if (!my_perl) exit(1); - perl_construct( my_perl ); - perl_destruct_level = 0; + perl_construct(my_perl); + PL_perl_destruct_level = 0; } + PL_exit_flags |= PERL_EXIT_DESTRUCT_END; + exitstatus = perl_parse(my_perl, xs_init, argc, argv, (char **)NULL); + if (!exitstatus) + perl_run(my_perl); - exitstatus = perl_parse( my_perl, xs_init, argc, argv, (char **) NULL ); - if (!exitstatus) { - exitstatus = perl_run( my_perl ); +#ifndef PERL_MICRO + /* Unregister our signal handler before destroying my_perl */ + for (i = 0; PL_sig_name[i]; i++) { + if (rsignal_state(PL_sig_num[i]) == (Sighandler_t) PL_csighandlerp) { + rsignal(PL_sig_num[i], (Sighandler_t) SIG_DFL); + } } +#endif + + exitstatus = perl_destruct(my_perl); - perl_destruct( my_perl ); - perl_free( my_perl ); + perl_free(my_perl); + +#if defined(USE_ENVIRON_ARRAY) && defined(PERL_TRACK_MEMPOOL) && !defined(NO_ENV_ARRAY_IN_MAIN) + /* + * The old environment may have been freed by perl_free() + * when PERL_TRACK_MEMPOOL is defined, but without having + * been restored by perl_destruct() before (this is only + * done if destruct_level > 0). + * + * It is important to have a valid environment for atexit() + * routines that are eventually called. + */ + environ = env; +#endif + +#ifdef PERL_GLOBAL_STRUCT + free_global_struct(plvarsp); +#endif /* PERL_GLOBAL_STRUCT */ PERL_SYS_TERM(); - exit( exitstatus ); + exit(exitstatus); return exitstatus; } @@ -56,7 +159,18 @@ char **env; /* Do not delete this line--writemain depends on it */ static void -xs_init(void) +xs_init(pTHX) { - dXSUB_SYS; + PERL_UNUSED_CONTEXT; + dXSUB_SYS; } + +/* + * Local variables: + * c-indentation-style: bsd + * c-basic-offset: 4 + * indent-tabs-mode: t + * End: + * + * ex: set ts=8 sts=4 sw=4 noet: + */