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Add comment to top of reentr.c and fix typos in other files
[perl5.git] / miniperlmain.c
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1/* miniperlmain.c
2 *
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3 * Copyright (C) 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002,
4 * by Larry Wall and others
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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
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11/*
12 * "The Road goes ever on and on, down from the door where it began."
13 */
14
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15/* This file contains the main() function for the perl interpreter.
16 * Note that miniperlmain.c contains main() for the 'miniperl' binary,
17 * while perlmain.c contains main() for the 'perl' binary.
18 *
19 * Miniperl is like perl except that does not support dynamic loading,
20 * and in fact is used to build the dynamic modules need for the 'real'
61296642 21 * perl executable.
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22 */
23
60e4866f 24#ifdef OEMVS
9133bbab 25#ifdef MYMALLOC
61296642 26/* sbrk is limited to first heap segment so make it big */
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27#pragma runopts(HEAP(8M,500K,ANYWHERE,KEEP,8K,4K) STACK(,,ANY,) ALL31(ON))
28#else
29#pragma runopts(HEAP(2M,500K,ANYWHERE,KEEP,8K,4K) STACK(,,ANY,) ALL31(ON))
30#endif
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31#endif
32
4633a7c4 33
ecfc5424 34#include "EXTERN.h"
864dbfa3 35#define PERL_IN_MINIPERLMAIN_C
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36#include "perl.h"
37
864dbfa3 38static void xs_init (pTHX);
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39static PerlInterpreter *my_perl;
40
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41#if defined (__MINT__) || defined (atarist)
42/* The Atari operating system doesn't have a dynamic stack. The
43 stack size is determined from this value. */
44long _stksize = 64 * 1024;
45#endif
46
c07a80fd 47int
91487cfc 48main(int argc, char **argv, char **env)
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49{
50 int exitstatus;
2304df62 51
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52#ifdef PERL_GLOBAL_STRUCT
53#define PERLVAR(var,type) /**/
51371543 54#define PERLVARA(var,type) /**/
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55#define PERLVARI(var,type,init) PL_Vars.var = init;
56#define PERLVARIC(var,type,init) PL_Vars.var = init;
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57#include "perlvars.h"
58#undef PERLVAR
51371543 59#undef PERLVARA
22239a37 60#undef PERLVARI
0f3f18a6 61#undef PERLVARIC
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62#endif
63
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64 /* if user wants control of gprof profiling off by default */
65 /* noop unless Configure is given -Accflags=-DPERL_GPROF_CONTROL */
66 PERL_GPROF_MONCONTROL(0);
67
91487cfc 68 PERL_SYS_INIT3(&argc,&argv,&env);
4633a7c4 69
3db8f154 70#if defined(USE_ITHREADS)
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71 /* XXX Ideally, this should really be happening in perl_alloc() or
72 * perl_construct() to keep libperl.a transparently fork()-safe.
73 * It is currently done here only because Apache/mod_perl have
74 * problems due to lack of a call to cancel pthread_atfork()
75 * handlers when shared objects that contain the handlers may
76 * be dlclose()d. This forces applications that embed perl to
77 * call PTHREAD_ATFORK() explicitly, but if and only if it hasn't
78 * been called at least once before in the current process.
79 * --GSAR 2001-07-20 */
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80 PTHREAD_ATFORK(Perl_atfork_lock,
81 Perl_atfork_unlock,
82 Perl_atfork_unlock);
83#endif
84
3280af22 85 if (!PL_do_undump) {
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86 my_perl = perl_alloc();
87 if (!my_perl)
88 exit(1);
642f9deb 89 perl_construct(my_perl);
3280af22 90 PL_perl_destruct_level = 0;
a0d0e21e 91 }
31d77e54 92 PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
642f9deb 93 exitstatus = perl_parse(my_perl, xs_init, argc, argv, (char **)NULL);
8815fa0e 94 if (!exitstatus)
31d77e54 95 perl_run(my_perl);
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96
97 exitstatus = perl_destruct(my_perl);
2304df62 98
642f9deb 99 perl_free(my_perl);
2304df62 100
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101 PERL_SYS_TERM();
102
642f9deb 103 exit(exitstatus);
4e35701f 104 return exitstatus;
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105}
106
107/* Register any extra external extensions */
108
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109/* Do not delete this line--writemain depends on it */
110
a0d0e21e 111static void
864dbfa3 112xs_init(pTHX)
2304df62 113{
642f9deb 114 dXSUB_SYS;
2304df62 115}