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perl.c
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/* perl.c
*
* Copyright (c) 1987-2002 Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/*
* "A ship then new they built for him/of mithril and of elven glass" --Bilbo
*/
#include "EXTERN.h"
#define PERL_IN_PERL_C
#include "perl.h"
#include "patchlevel.h" /* for local_patches */
#ifdef NETWARE
#include "nwutil.h"
char *nw_get_sitelib(const char *pl);
#endif
/* XXX If this causes problems, set i_unistd=undef in the hint file. */
#ifdef I_UNISTD
#include <unistd.h>
#endif
#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
char *getenv (char *); /* Usually in <stdlib.h> */
#endif
static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
#ifdef IAMSUID
#ifndef DOSUID
#define DOSUID
#endif
#endif
#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
#ifdef DOSUID
#undef DOSUID
#endif
#endif
#if defined(USE_5005THREADS)
# define INIT_TLS_AND_INTERP \
STMT_START { \
if (!PL_curinterp) { \
PERL_SET_INTERP(my_perl); \
INIT_THREADS; \
ALLOC_THREAD_KEY; \
} \
} STMT_END
#else
# if defined(USE_ITHREADS)
# define INIT_TLS_AND_INTERP \
STMT_START { \
if (!PL_curinterp) { \
PERL_SET_INTERP(my_perl); \
INIT_THREADS; \
ALLOC_THREAD_KEY; \
PERL_SET_THX(my_perl); \
OP_REFCNT_INIT; \
} \
else { \
PERL_SET_THX(my_perl); \
} \
} STMT_END
# else
# define INIT_TLS_AND_INTERP \
STMT_START { \
if (!PL_curinterp) { \
PERL_SET_INTERP(my_perl); \
} \
PERL_SET_THX(my_perl); \
} STMT_END
# endif
#endif
#ifdef PERL_IMPLICIT_SYS
PerlInterpreter *
perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
struct IPerlMem* ipMP, struct IPerlEnv* ipE,
struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
struct IPerlDir* ipD, struct IPerlSock* ipS,
struct IPerlProc* ipP)
{
PerlInterpreter *my_perl;
/* New() needs interpreter, so call malloc() instead */
my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
INIT_TLS_AND_INTERP;
Zero(my_perl, 1, PerlInterpreter);
PL_Mem = ipM;
PL_MemShared = ipMS;
PL_MemParse = ipMP;
PL_Env = ipE;
PL_StdIO = ipStd;
PL_LIO = ipLIO;
PL_Dir = ipD;
PL_Sock = ipS;
PL_Proc = ipP;
return my_perl;
}
#else
/*
=head1 Embedding Functions
=for apidoc perl_alloc
Allocates a new Perl interpreter. See L<perlembed>.
=cut
*/
PerlInterpreter *
perl_alloc(void)
{
PerlInterpreter *my_perl;
#ifdef USE_5005THREADS
dTHX;
#endif
/* New() needs interpreter, so call malloc() instead */
my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
INIT_TLS_AND_INTERP;
Zero(my_perl, 1, PerlInterpreter);
return my_perl;
}
#endif /* PERL_IMPLICIT_SYS */
/*
=for apidoc perl_construct
Initializes a new Perl interpreter. See L<perlembed>.
=cut
*/
void
perl_construct(pTHXx)
{
#ifdef USE_5005THREADS
#ifndef FAKE_THREADS
struct perl_thread *thr = NULL;
#endif /* FAKE_THREADS */
#endif /* USE_5005THREADS */
#ifdef MULTIPLICITY
init_interp();
PL_perl_destruct_level = 1;
#else
if (PL_perl_destruct_level > 0)
init_interp();
#endif
/* Init the real globals (and main thread)? */
if (!PL_linestr) {
#ifdef USE_5005THREADS
MUTEX_INIT(&PL_sv_mutex);
/*
* Safe to use basic SV functions from now on (though
* not things like mortals or tainting yet).
*/
MUTEX_INIT(&PL_eval_mutex);
COND_INIT(&PL_eval_cond);
MUTEX_INIT(&PL_threads_mutex);
COND_INIT(&PL_nthreads_cond);
# ifdef EMULATE_ATOMIC_REFCOUNTS
MUTEX_INIT(&PL_svref_mutex);
# endif /* EMULATE_ATOMIC_REFCOUNTS */
MUTEX_INIT(&PL_cred_mutex);
MUTEX_INIT(&PL_sv_lock_mutex);
MUTEX_INIT(&PL_fdpid_mutex);
thr = init_main_thread();
#endif /* USE_5005THREADS */
#ifdef PERL_FLEXIBLE_EXCEPTIONS
PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
#endif
PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
PL_linestr = NEWSV(65,79);
sv_upgrade(PL_linestr,SVt_PVIV);
if (!SvREADONLY(&PL_sv_undef)) {
/* set read-only and try to insure than we wont see REFCNT==0
very often */
SvREADONLY_on(&PL_sv_undef);
SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
sv_setpv(&PL_sv_no,PL_No);
SvNV(&PL_sv_no);
SvREADONLY_on(&PL_sv_no);
SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
sv_setpv(&PL_sv_yes,PL_Yes);
SvNV(&PL_sv_yes);
SvREADONLY_on(&PL_sv_yes);
SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
}
PL_sighandlerp = Perl_sighandler;
PL_pidstatus = newHV();
}
PL_rs = newSVpvn("\n", 1);
init_stacks();
init_ids();
PL_lex_state = LEX_NOTPARSING;
JMPENV_BOOTSTRAP;
STATUS_ALL_SUCCESS;
init_i18nl10n(1);
SET_NUMERIC_STANDARD();
{
U8 *s;
PL_patchlevel = NEWSV(0,4);
(void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
s = (U8*)SvPVX(PL_patchlevel);
/* Build version strings using "native" characters */
s = uvchr_to_utf8(s, (UV)PERL_REVISION);
s = uvchr_to_utf8(s, (UV)PERL_VERSION);
s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
*s = '\0';
SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
SvPOK_on(PL_patchlevel);
SvNVX(PL_patchlevel) = (NV)PERL_REVISION
+ ((NV)PERL_VERSION / (NV)1000)
#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
+ ((NV)PERL_SUBVERSION / (NV)1000000)
#endif
;
SvNOK_on(PL_patchlevel); /* dual valued */
SvUTF8_on(PL_patchlevel);
SvREADONLY_on(PL_patchlevel);
}
#if defined(LOCAL_PATCH_COUNT)
PL_localpatches = local_patches; /* For possible -v */
#endif
#ifdef HAVE_INTERP_INTERN
sys_intern_init();
#endif
PerlIO_init(aTHX); /* Hook to IO system */
PL_fdpid = newAV(); /* for remembering popen pids by fd */
PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
PL_errors = newSVpvn("",0);
sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
#ifdef USE_ITHREADS
PL_regex_padav = newAV();
av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
PL_regex_pad = AvARRAY(PL_regex_padav);
#endif
#ifdef USE_REENTRANT_API
Perl_reentrant_init(aTHX);
#endif
/* Note that strtab is a rather special HV. Assumptions are made
about not iterating on it, and not adding tie magic to it.
It is properly deallocated in perl_destruct() */
PL_strtab = newHV();
#ifdef USE_5005THREADS
MUTEX_INIT(&PL_strtab_mutex);
#endif
HvSHAREKEYS_off(PL_strtab); /* mandatory */
hv_ksplit(PL_strtab, 512);
#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
_dyld_lookup_and_bind
("__environ", (unsigned long *) &environ_pointer, NULL);
#endif /* environ */
#ifdef USE_ENVIRON_ARRAY
PL_origenviron = environ;
#endif
ENTER;
}
/*
=for apidoc nothreadhook
Stub that provides thread hook for perl_destruct when there are
no threads.
=cut
*/
int
Perl_nothreadhook(pTHX)
{
return 0;
}
/*
=for apidoc perl_destruct
Shuts down a Perl interpreter. See L<perlembed>.
=cut
*/
int
perl_destruct(pTHXx)
{
volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
HV *hv;
#ifdef USE_5005THREADS
Thread t;
dTHX;
#endif /* USE_5005THREADS */
/* wait for all pseudo-forked children to finish */
PERL_WAIT_FOR_CHILDREN;
#ifdef USE_5005THREADS
#ifndef FAKE_THREADS
/* Pass 1 on any remaining threads: detach joinables, join zombies */
retry_cleanup:
MUTEX_LOCK(&PL_threads_mutex);
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: waiting for %d threads...\n",
PL_nthreads - 1));
for (t = thr->next; t != thr; t = t->next) {
MUTEX_LOCK(&t->mutex);
switch (ThrSTATE(t)) {
AV *av;
case THRf_ZOMBIE:
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: joining zombie %p\n", t));
ThrSETSTATE(t, THRf_DEAD);
MUTEX_UNLOCK(&t->mutex);
PL_nthreads--;
/*
* The SvREFCNT_dec below may take a long time (e.g. av
* may contain an object scalar whose destructor gets
* called) so we have to unlock threads_mutex and start
* all over again.
*/
MUTEX_UNLOCK(&PL_threads_mutex);
JOIN(t, &av);
SvREFCNT_dec((SV*)av);
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: joined zombie %p OK\n", t));
goto retry_cleanup;
case THRf_R_JOINABLE:
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: detaching thread %p\n", t));
ThrSETSTATE(t, THRf_R_DETACHED);
/*
* We unlock threads_mutex and t->mutex in the opposite order
* from which we locked them just so that DETACH won't
* deadlock if it panics. It's only a breach of good style
* not a bug since they are unlocks not locks.
*/
MUTEX_UNLOCK(&PL_threads_mutex);
DETACH(t);
MUTEX_UNLOCK(&t->mutex);
goto retry_cleanup;
default:
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: ignoring %p (state %u)\n",
t, ThrSTATE(t)));
MUTEX_UNLOCK(&t->mutex);
/* fall through and out */
}
}
/* We leave the above "Pass 1" loop with threads_mutex still locked */
/* Pass 2 on remaining threads: wait for the thread count to drop to one */
while (PL_nthreads > 1)
{
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: final wait for %d threads\n",
PL_nthreads - 1));
COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
}
/* At this point, we're the last thread */
MUTEX_UNLOCK(&PL_threads_mutex);
DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
MUTEX_DESTROY(&PL_threads_mutex);
COND_DESTROY(&PL_nthreads_cond);
PL_nthreads--;
#endif /* !defined(FAKE_THREADS) */
#endif /* USE_5005THREADS */
destruct_level = PL_perl_destruct_level;
#ifdef DEBUGGING
{
char *s;
if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
int i = atoi(s);
if (destruct_level < i)
destruct_level = i;
}
}
#endif
if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
dJMPENV;
int x = 0;
JMPENV_PUSH(x);
if (PL_endav && !PL_minus_c)
call_list(PL_scopestack_ix, PL_endav);
JMPENV_POP;
}
LEAVE;
FREETMPS;
/* Need to flush since END blocks can produce output */
my_fflush_all();
if (CALL_FPTR(PL_threadhook)(aTHX)) {
/* Threads hook has vetoed further cleanup */
return STATUS_NATIVE_EXPORT;
}
/* We must account for everything. */
/* Destroy the main CV and syntax tree */
if (PL_main_root) {
/* If running under -d may not have PL_comppad. */
PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL;
op_free(PL_main_root);
PL_main_root = Nullop;
}
PL_curcop = &PL_compiling;
PL_main_start = Nullop;
SvREFCNT_dec(PL_main_cv);
PL_main_cv = Nullcv;
PL_dirty = TRUE;
/* Tell PerlIO we are about to tear things apart in case
we have layers which are using resources that should
be cleaned up now.
*/
PerlIO_destruct(aTHX);
if (PL_sv_objcount) {
/*
* Try to destruct global references. We do this first so that the
* destructors and destructees still exist. Some sv's might remain.
* Non-referenced objects are on their own.
*/
sv_clean_objs();
}
/* unhook hooks which will soon be, or use, destroyed data */
SvREFCNT_dec(PL_warnhook);
PL_warnhook = Nullsv;
SvREFCNT_dec(PL_diehook);
PL_diehook = Nullsv;
/* call exit list functions */
while (PL_exitlistlen-- > 0)
PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
Safefree(PL_exitlist);
if (destruct_level == 0){
DEBUG_P(debprofdump());
#if defined(PERLIO_LAYERS)
/* No more IO - including error messages ! */
PerlIO_cleanup(aTHX);
#endif
/* The exit() function will do everything that needs doing. */
return STATUS_NATIVE_EXPORT;
}
/* jettison our possibly duplicated environment */
/* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
* so we certainly shouldn't free it here
*/
#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
if (environ != PL_origenviron
#ifdef USE_ITHREADS
/* only main thread can free environ[0] contents */
&& PL_curinterp == aTHX
#endif
)
{
I32 i;
for (i = 0; environ[i]; i++)
safesysfree(environ[i]);
/* Must use safesysfree() when working with environ. */
safesysfree(environ);
environ = PL_origenviron;
}
#endif
#ifdef USE_ITHREADS
/* the syntax tree is shared between clones
* so op_free(PL_main_root) only ReREFCNT_dec's
* REGEXPs in the parent interpreter
* we need to manually ReREFCNT_dec for the clones
*/
{
I32 i = AvFILLp(PL_regex_padav) + 1;
SV **ary = AvARRAY(PL_regex_padav);
while (i) {
SV *resv = ary[--i];
REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
if (SvFLAGS(resv) & SVf_BREAK) {
/* this is PL_reg_curpm, already freed
* flag is set in regexec.c:S_regtry
*/
SvFLAGS(resv) &= ~SVf_BREAK;
}
else if(SvREPADTMP(resv)) {
SvREPADTMP_off(resv);
}
else {
ReREFCNT_dec(re);
}
}
}
SvREFCNT_dec(PL_regex_padav);
PL_regex_padav = Nullav;
PL_regex_pad = NULL;
#endif
/* loosen bonds of global variables */
if(PL_rsfp) {
(void)PerlIO_close(PL_rsfp);
PL_rsfp = Nullfp;
}
/* Filters for program text */
SvREFCNT_dec(PL_rsfp_filters);
PL_rsfp_filters = Nullav;
/* switches */
PL_preprocess = FALSE;
PL_minus_n = FALSE;
PL_minus_p = FALSE;
PL_minus_l = FALSE;
PL_minus_a = FALSE;
PL_minus_F = FALSE;
PL_doswitches = FALSE;
PL_dowarn = G_WARN_OFF;
PL_doextract = FALSE;
PL_sawampersand = FALSE; /* must save all match strings */
PL_unsafe = FALSE;
Safefree(PL_inplace);
PL_inplace = Nullch;
SvREFCNT_dec(PL_patchlevel);
if (PL_e_script) {
SvREFCNT_dec(PL_e_script);
PL_e_script = Nullsv;
}
while (--PL_origargc >= 0) {
Safefree(PL_origargv[PL_origargc]);
}
Safefree(PL_origargv);
/* magical thingies */
SvREFCNT_dec(PL_ofs_sv); /* $, */
PL_ofs_sv = Nullsv;
SvREFCNT_dec(PL_ors_sv); /* $\ */
PL_ors_sv = Nullsv;
SvREFCNT_dec(PL_rs); /* $/ */
PL_rs = Nullsv;
PL_multiline = 0; /* $* */
Safefree(PL_osname); /* $^O */
PL_osname = Nullch;
SvREFCNT_dec(PL_statname);
PL_statname = Nullsv;
PL_statgv = Nullgv;
/* defgv, aka *_ should be taken care of elsewhere */
/* clean up after study() */
SvREFCNT_dec(PL_lastscream);
PL_lastscream = Nullsv;
Safefree(PL_screamfirst);
PL_screamfirst = 0;
Safefree(PL_screamnext);
PL_screamnext = 0;
/* float buffer */
Safefree(PL_efloatbuf);
PL_efloatbuf = Nullch;
PL_efloatsize = 0;
/* startup and shutdown function lists */
SvREFCNT_dec(PL_beginav);
SvREFCNT_dec(PL_beginav_save);
SvREFCNT_dec(PL_endav);
SvREFCNT_dec(PL_checkav);
SvREFCNT_dec(PL_initav);
PL_beginav = Nullav;
PL_beginav_save = Nullav;
PL_endav = Nullav;
PL_checkav = Nullav;
PL_initav = Nullav;
/* shortcuts just get cleared */
PL_envgv = Nullgv;
PL_incgv = Nullgv;
PL_hintgv = Nullgv;
PL_errgv = Nullgv;
PL_argvgv = Nullgv;
PL_argvoutgv = Nullgv;
PL_stdingv = Nullgv;
PL_stderrgv = Nullgv;
PL_last_in_gv = Nullgv;
PL_replgv = Nullgv;
PL_debstash = Nullhv;
/* reset so print() ends up where we expect */
setdefout(Nullgv);
SvREFCNT_dec(PL_argvout_stack);
PL_argvout_stack = Nullav;
SvREFCNT_dec(PL_modglobal);
PL_modglobal = Nullhv;
SvREFCNT_dec(PL_preambleav);
PL_preambleav = Nullav;
SvREFCNT_dec(PL_subname);
PL_subname = Nullsv;
SvREFCNT_dec(PL_linestr);
PL_linestr = Nullsv;
SvREFCNT_dec(PL_pidstatus);
PL_pidstatus = Nullhv;
SvREFCNT_dec(PL_toptarget);
PL_toptarget = Nullsv;
SvREFCNT_dec(PL_bodytarget);
PL_bodytarget = Nullsv;
PL_formtarget = Nullsv;
/* free locale stuff */
#ifdef USE_LOCALE_COLLATE
Safefree(PL_collation_name);
PL_collation_name = Nullch;
#endif
#ifdef USE_LOCALE_NUMERIC
Safefree(PL_numeric_name);
PL_numeric_name = Nullch;
SvREFCNT_dec(PL_numeric_radix_sv);
#endif
/* clear utf8 character classes */
SvREFCNT_dec(PL_utf8_alnum);
SvREFCNT_dec(PL_utf8_alnumc);
SvREFCNT_dec(PL_utf8_ascii);
SvREFCNT_dec(PL_utf8_alpha);
SvREFCNT_dec(PL_utf8_space);
SvREFCNT_dec(PL_utf8_cntrl);
SvREFCNT_dec(PL_utf8_graph);
SvREFCNT_dec(PL_utf8_digit);
SvREFCNT_dec(PL_utf8_upper);
SvREFCNT_dec(PL_utf8_lower);
SvREFCNT_dec(PL_utf8_print);
SvREFCNT_dec(PL_utf8_punct);
SvREFCNT_dec(PL_utf8_xdigit);
SvREFCNT_dec(PL_utf8_mark);
SvREFCNT_dec(PL_utf8_toupper);
SvREFCNT_dec(PL_utf8_totitle);
SvREFCNT_dec(PL_utf8_tolower);
SvREFCNT_dec(PL_utf8_tofold);
SvREFCNT_dec(PL_utf8_idstart);
SvREFCNT_dec(PL_utf8_idcont);
PL_utf8_alnum = Nullsv;
PL_utf8_alnumc = Nullsv;
PL_utf8_ascii = Nullsv;
PL_utf8_alpha = Nullsv;
PL_utf8_space = Nullsv;
PL_utf8_cntrl = Nullsv;
PL_utf8_graph = Nullsv;
PL_utf8_digit = Nullsv;
PL_utf8_upper = Nullsv;
PL_utf8_lower = Nullsv;
PL_utf8_print = Nullsv;
PL_utf8_punct = Nullsv;
PL_utf8_xdigit = Nullsv;
PL_utf8_mark = Nullsv;
PL_utf8_toupper = Nullsv;
PL_utf8_totitle = Nullsv;
PL_utf8_tolower = Nullsv;
PL_utf8_tofold = Nullsv;
PL_utf8_idstart = Nullsv;
PL_utf8_idcont = Nullsv;
if (!specialWARN(PL_compiling.cop_warnings))
SvREFCNT_dec(PL_compiling.cop_warnings);
PL_compiling.cop_warnings = Nullsv;
if (!specialCopIO(PL_compiling.cop_io))
SvREFCNT_dec(PL_compiling.cop_io);
PL_compiling.cop_io = Nullsv;
CopFILE_free(&PL_compiling);
CopSTASH_free(&PL_compiling);
/* Prepare to destruct main symbol table. */
hv = PL_defstash;
PL_defstash = 0;
SvREFCNT_dec(hv);
SvREFCNT_dec(PL_curstname);
PL_curstname = Nullsv;
/* clear queued errors */
SvREFCNT_dec(PL_errors);
PL_errors = Nullsv;
FREETMPS;
if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
if (PL_scopestack_ix != 0)
Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
"Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
(long)PL_scopestack_ix);
if (PL_savestack_ix != 0)
Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
"Unbalanced saves: %ld more saves than restores\n",
(long)PL_savestack_ix);
if (PL_tmps_floor != -1)
Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
(long)PL_tmps_floor + 1);
if (cxstack_ix != -1)
Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
(long)cxstack_ix + 1);
}
/* Now absolutely destruct everything, somehow or other, loops or no. */
SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
/* the 2 is for PL_fdpid and PL_strtab */
while (PL_sv_count > 2 && sv_clean_all())
;
SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
SvFLAGS(PL_fdpid) |= SVt_PVAV;
SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
SvFLAGS(PL_strtab) |= SVt_PVHV;
AvREAL_off(PL_fdpid); /* no surviving entries */
SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
PL_fdpid = Nullav;
#ifdef HAVE_INTERP_INTERN
sys_intern_clear();
#endif
/* Destruct the global string table. */
{
/* Yell and reset the HeVAL() slots that are still holding refcounts,
* so that sv_free() won't fail on them.
*/
I32 riter;
I32 max;
HE *hent;
HE **array;
riter = 0;
max = HvMAX(PL_strtab);
array = HvARRAY(PL_strtab);
hent = array[0];
for (;;) {
if (hent && ckWARN_d(WARN_INTERNAL)) {
Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
"Unbalanced string table refcount: (%d) for \"%s\"",
HeVAL(hent) - Nullsv, HeKEY(hent));
HeVAL(hent) = Nullsv;
hent = HeNEXT(hent);
}
if (!hent) {
if (++riter > max)
break;
hent = array[riter];
}
}
}
SvREFCNT_dec(PL_strtab);
#ifdef USE_ITHREADS
/* free the pointer table used for cloning */
ptr_table_free(PL_ptr_table);
#endif
/* free special SVs */
SvREFCNT(&PL_sv_yes) = 0;
sv_clear(&PL_sv_yes);
SvANY(&PL_sv_yes) = NULL;
SvFLAGS(&PL_sv_yes) = 0;
SvREFCNT(&PL_sv_no) = 0;
sv_clear(&PL_sv_no);
SvANY(&PL_sv_no) = NULL;
SvFLAGS(&PL_sv_no) = 0;
{
int i;
for (i=0; i<=2; i++) {
SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
sv_clear(PERL_DEBUG_PAD(i));
SvANY(PERL_DEBUG_PAD(i)) = NULL;
SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
}
}
if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
#if defined(PERLIO_LAYERS)
/* No more IO - including error messages ! */
PerlIO_cleanup(aTHX);
#endif
/* sv_undef needs to stay immortal until after PerlIO_cleanup
as currently layers use it rather than Nullsv as a marker
for no arg - and will try and SvREFCNT_dec it.
*/
SvREFCNT(&PL_sv_undef) = 0;
SvREADONLY_off(&PL_sv_undef);
Safefree(PL_origfilename);
Safefree(PL_reg_start_tmp);
if (PL_reg_curpm)
Safefree(PL_reg_curpm);
Safefree(PL_reg_poscache);
Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
Safefree(PL_op_mask);
Safefree(PL_psig_ptr);
Safefree(PL_psig_name);
Safefree(PL_bitcount);
Safefree(PL_psig_pend);
nuke_stacks();
PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
DEBUG_P(debprofdump());
#ifdef USE_5005THREADS
MUTEX_DESTROY(&PL_strtab_mutex);
MUTEX_DESTROY(&PL_sv_mutex);
MUTEX_DESTROY(&PL_eval_mutex);
MUTEX_DESTROY(&PL_cred_mutex);
MUTEX_DESTROY(&PL_fdpid_mutex);
COND_DESTROY(&PL_eval_cond);
#ifdef EMULATE_ATOMIC_REFCOUNTS
MUTEX_DESTROY(&PL_svref_mutex);
#endif /* EMULATE_ATOMIC_REFCOUNTS */
/* As the penultimate thing, free the non-arena SV for thrsv */
Safefree(SvPVX(PL_thrsv));
Safefree(SvANY(PL_thrsv));
Safefree(PL_thrsv);
PL_thrsv = Nullsv;
#endif /* USE_5005THREADS */
#ifdef USE_REENTRANT_API
Perl_reentrant_free(aTHX);
#endif
sv_free_arenas();
/* As the absolutely last thing, free the non-arena SV for mess() */
if (PL_mess_sv) {
/* it could have accumulated taint magic */
if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
MAGIC* mg;
MAGIC* moremagic;
for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
moremagic = mg->mg_moremagic;
if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
&& mg->mg_len >= 0)
Safefree(mg->mg_ptr);
Safefree(mg);
}
}
/* we know that type >= SVt_PV */
(void)SvOOK_off(PL_mess_sv);
Safefree(SvPVX(PL_mess_sv));
Safefree(SvANY(PL_mess_sv));
Safefree(PL_mess_sv);
PL_mess_sv = Nullsv;
}
return STATUS_NATIVE_EXPORT;
}
/*
=for apidoc perl_free
Releases a Perl interpreter. See L<perlembed>.
=cut
*/
void
perl_free(pTHXx)
{
#if defined(WIN32) || defined(NETWARE)
# if defined(PERL_IMPLICIT_SYS)
# ifdef NETWARE
void *host = nw_internal_host;
# else
void *host = w32_internal_host;
# endif
PerlMem_free(aTHXx);
# ifdef NETWARE
nw_delete_internal_host(host);
# else
win32_delete_internal_host(host);
# endif
# else
PerlMem_free(aTHXx);
# endif
#else
PerlMem_free(aTHXx);
#endif
}
void
Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
{
Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
PL_exitlist[PL_exitlistlen].fn = fn;
PL_exitlist[PL_exitlistlen].ptr = ptr;
++PL_exitlistlen;
}
/*
=for apidoc perl_parse
Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
=cut
*/
int
perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
{
I32 oldscope;
int ret;
dJMPENV;
#ifdef USE_5005THREADS
dTHX;
#endif
#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
#ifdef IAMSUID
#undef IAMSUID
Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
setuid perl scripts securely.\n");
#endif
#endif
PL_origargc = argc;
{
/* we copy rather than point to argv
* since perl_clone will copy and perl_destruct
* has no way of knowing if we've made a copy or
* just point to argv
*/
int i = PL_origargc;
New(0, PL_origargv, i+1, char*);
PL_origargv[i] = '\0';