| 1 | /* miniperlmain.c |
| 2 | * |
| 3 | * Copyright (C) 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, |
| 4 | * 2004, 2005, 2006, 2007, by Larry Wall and others |
| 5 | * |
| 6 | * You may distribute under the terms of either the GNU General Public |
| 7 | * License or the Artistic License, as specified in the README file. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | /* |
| 12 | * The Road goes ever on and on |
| 13 | * Down from the door where it began. |
| 14 | * |
| 15 | * [Bilbo on p.35 of _The Lord of the Rings_, I/i: "A Long-Expected Party"] |
| 16 | * [Frodo on p.73 of _The Lord of the Rings_, I/iii: "Three Is Company"] |
| 17 | */ |
| 18 | |
| 19 | /* This file contains the main() function for the perl interpreter. |
| 20 | * Note that miniperlmain.c contains main() for the 'miniperl' binary, |
| 21 | * while perlmain.c contains main() for the 'perl' binary. |
| 22 | * |
| 23 | * Miniperl is like perl except that it does not support dynamic loading, |
| 24 | * and in fact is used to build the dynamic modules needed for the 'real' |
| 25 | * perl executable. |
| 26 | */ |
| 27 | |
| 28 | #ifdef OEMVS |
| 29 | #ifdef MYMALLOC |
| 30 | /* sbrk is limited to first heap segment so make it big */ |
| 31 | #pragma runopts(HEAP(8M,500K,ANYWHERE,KEEP,8K,4K) STACK(,,ANY,) ALL31(ON)) |
| 32 | #else |
| 33 | #pragma runopts(HEAP(2M,500K,ANYWHERE,KEEP,8K,4K) STACK(,,ANY,) ALL31(ON)) |
| 34 | #endif |
| 35 | #endif |
| 36 | |
| 37 | |
| 38 | #include "EXTERN.h" |
| 39 | #define PERL_IN_MINIPERLMAIN_C |
| 40 | #include "perl.h" |
| 41 | |
| 42 | static void xs_init (pTHX); |
| 43 | static PerlInterpreter *my_perl; |
| 44 | |
| 45 | #if defined(PERL_GLOBAL_STRUCT_PRIVATE) |
| 46 | /* The static struct perl_vars* may seem counterproductive since the |
| 47 | * whole idea PERL_GLOBAL_STRUCT_PRIVATE was to avoid statics, but note |
| 48 | * that this static is not in the shared perl library, the globals PL_Vars |
| 49 | * and PL_VarsPtr will stay away. */ |
| 50 | static struct perl_vars* my_plvarsp; |
| 51 | struct perl_vars* Perl_GetVarsPrivate(void) { return my_plvarsp; } |
| 52 | #endif |
| 53 | |
| 54 | #ifdef NO_ENV_ARRAY_IN_MAIN |
| 55 | extern char **environ; |
| 56 | int |
| 57 | main(int argc, char **argv) |
| 58 | #else |
| 59 | int |
| 60 | main(int argc, char **argv, char **env) |
| 61 | #endif |
| 62 | { |
| 63 | dVAR; |
| 64 | int exitstatus, i; |
| 65 | #ifdef PERL_GLOBAL_STRUCT |
| 66 | struct perl_vars *plvarsp = init_global_struct(); |
| 67 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE |
| 68 | my_vars = my_plvarsp = plvarsp; |
| 69 | # endif |
| 70 | #endif /* PERL_GLOBAL_STRUCT */ |
| 71 | #ifndef NO_ENV_ARRAY_IN_MAIN |
| 72 | PERL_UNUSED_ARG(env); |
| 73 | #endif |
| 74 | #ifndef PERL_USE_SAFE_PUTENV |
| 75 | PL_use_safe_putenv = FALSE; |
| 76 | #endif /* PERL_USE_SAFE_PUTENV */ |
| 77 | |
| 78 | /* if user wants control of gprof profiling off by default */ |
| 79 | /* noop unless Configure is given -Accflags=-DPERL_GPROF_CONTROL */ |
| 80 | PERL_GPROF_MONCONTROL(0); |
| 81 | |
| 82 | #ifdef NO_ENV_ARRAY_IN_MAIN |
| 83 | PERL_SYS_INIT3(&argc,&argv,&environ); |
| 84 | #else |
| 85 | PERL_SYS_INIT3(&argc,&argv,&env); |
| 86 | #endif |
| 87 | |
| 88 | #if defined(USE_ITHREADS) |
| 89 | /* XXX Ideally, this should really be happening in perl_alloc() or |
| 90 | * perl_construct() to keep libperl.a transparently fork()-safe. |
| 91 | * It is currently done here only because Apache/mod_perl have |
| 92 | * problems due to lack of a call to cancel pthread_atfork() |
| 93 | * handlers when shared objects that contain the handlers may |
| 94 | * be dlclose()d. This forces applications that embed perl to |
| 95 | * call PTHREAD_ATFORK() explicitly, but if and only if it hasn't |
| 96 | * been called at least once before in the current process. |
| 97 | * --GSAR 2001-07-20 */ |
| 98 | PTHREAD_ATFORK(Perl_atfork_lock, |
| 99 | Perl_atfork_unlock, |
| 100 | Perl_atfork_unlock); |
| 101 | #endif |
| 102 | |
| 103 | if (!PL_do_undump) { |
| 104 | my_perl = perl_alloc(); |
| 105 | if (!my_perl) |
| 106 | exit(1); |
| 107 | perl_construct(my_perl); |
| 108 | PL_perl_destruct_level = 0; |
| 109 | } |
| 110 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
| 111 | exitstatus = perl_parse(my_perl, xs_init, argc, argv, (char **)NULL); |
| 112 | if (!exitstatus) |
| 113 | perl_run(my_perl); |
| 114 | |
| 115 | #ifndef PERL_MICRO |
| 116 | /* Unregister our signal handler before destroying my_perl */ |
| 117 | for (i = 1; PL_sig_name[i]; i++) { |
| 118 | if (rsignal_state(PL_sig_num[i]) == (Sighandler_t) PL_csighandlerp) { |
| 119 | rsignal(PL_sig_num[i], (Sighandler_t) SIG_DFL); |
| 120 | } |
| 121 | } |
| 122 | #endif |
| 123 | |
| 124 | exitstatus = perl_destruct(my_perl); |
| 125 | |
| 126 | perl_free(my_perl); |
| 127 | |
| 128 | #if defined(USE_ENVIRON_ARRAY) && defined(PERL_TRACK_MEMPOOL) && !defined(NO_ENV_ARRAY_IN_MAIN) |
| 129 | /* |
| 130 | * The old environment may have been freed by perl_free() |
| 131 | * when PERL_TRACK_MEMPOOL is defined, but without having |
| 132 | * been restored by perl_destruct() before (this is only |
| 133 | * done if destruct_level > 0). |
| 134 | * |
| 135 | * It is important to have a valid environment for atexit() |
| 136 | * routines that are eventually called. |
| 137 | */ |
| 138 | environ = env; |
| 139 | #endif |
| 140 | |
| 141 | PERL_SYS_TERM(); |
| 142 | |
| 143 | #ifdef PERL_GLOBAL_STRUCT |
| 144 | free_global_struct(plvarsp); |
| 145 | #endif /* PERL_GLOBAL_STRUCT */ |
| 146 | |
| 147 | exit(exitstatus); |
| 148 | return exitstatus; |
| 149 | } |
| 150 | |
| 151 | /* Register any extra external extensions */ |
| 152 | |
| 153 | /* Do not delete this line--writemain depends on it */ |
| 154 | |
| 155 | static void |
| 156 | xs_init(pTHX) |
| 157 | { |
| 158 | PERL_UNUSED_CONTEXT; |
| 159 | dXSUB_SYS; |
| 160 | } |
| 161 | |
| 162 | /* |
| 163 | * Local variables: |
| 164 | * c-indentation-style: bsd |
| 165 | * c-basic-offset: 4 |
| 166 | * indent-tabs-mode: nil |
| 167 | * End: |
| 168 | * |
| 169 | * ex: set ts=8 sts=4 sw=4 et: |
| 170 | */ |