static void init_perllib _((void));
static void init_postdump_symbols _((int, char **, char **));
static void init_predump_symbols _((void));
-static void init_stacks _((void));
static void my_exit_jump _((void)) __attribute__((noreturn));
static void nuke_stacks _((void));
static void open_script _((char *, bool, SV *));
static int fdscript = -1;
+#if defined(DEBUGGING) && defined(USE_THREADS) && defined(__linux__)
+#include <asm/sigcontext.h>
+static void
+catch_sigsegv(int signo, struct sigcontext_struct sc)
+{
+ signal(SIGSEGV, SIG_DFL);
+ fprintf(stderr, "Segmentation fault dereferencing 0x%lx\n"
+ "return_address = 0x%lx, eip = 0x%lx\n",
+ sc.cr2, __builtin_return_address(0), sc.eip);
+ fprintf(stderr, "thread = 0x%lx\n", (unsigned long)THR);
+}
+#endif
+
PerlInterpreter *
perl_alloc()
{
perl_construct( sv_interp )
register PerlInterpreter *sv_interp;
{
+#if defined(USE_THREADS) && !defined(FAKE_THREADS)
+ struct thread *thr;
+#endif
+
if (!(curinterp = sv_interp))
return;
Zero(sv_interp, 1, PerlInterpreter);
#endif
- /* Init the real globals? */
+ /* Init the real globals (and main thread)? */
if (!linestr) {
+#ifdef USE_THREADS
+ XPV *xpv;
+
+ INIT_THREADS;
+ Newz(53, thr, 1, struct thread);
+ MUTEX_INIT(&malloc_mutex);
+ MUTEX_INIT(&sv_mutex);
+ /* Safe to use SVs from now on */
+ MUTEX_INIT(&eval_mutex);
+ COND_INIT(&eval_cond);
+ MUTEX_INIT(&threads_mutex);
+ COND_INIT(&nthreads_cond);
+ nthreads = 1;
+ cvcache = newHV();
+ curcop = &compiling;
+ thr->flags = THRf_R_JOINABLE;
+ MUTEX_INIT(&thr->mutex);
+ thr->next = thr;
+ thr->prev = thr;
+ thr->tid = 0;
+
+ /* Handcraft thrsv similarly to mess_sv */
+ New(53, thrsv, 1, SV);
+ Newz(53, xpv, 1, XPV);
+ SvFLAGS(thrsv) = SVt_PV;
+ SvANY(thrsv) = (void*)xpv;
+ SvREFCNT(thrsv) = 1 << 30; /* practically infinite */
+ SvPVX(thrsv) = (char*)thr;
+ SvCUR_set(thrsv, sizeof(thr));
+ SvLEN_set(thrsv, sizeof(thr));
+ *SvEND(thrsv) = '\0'; /* in the trailing_nul field */
+ oursv = thrsv;
+#ifdef HAVE_THREAD_INTERN
+ init_thread_intern(thr);
+#else
+ self = pthread_self();
+ if (pthread_key_create(&thr_key, 0))
+ croak("panic: pthread_key_create");
+#endif /* HAVE_THREAD_INTERN */
+ SET_THR(thr);
+#endif /* USE_THREADS */
+
linestr = NEWSV(65,80);
sv_upgrade(linestr,SVt_PVIV);
nrs = newSVpv("\n", 1);
rs = SvREFCNT_inc(nrs);
+ sighandlerp = sighandler;
pidstatus = newHV();
#ifdef MSDOS
#endif
init_ids();
+ lex_state = LEX_NOTPARSING;
start_env.je_prev = NULL;
start_env.je_ret = -1;
fdpid = newAV(); /* for remembering popen pids by fd */
- init_stacks();
+ init_stacks(ARGS);
+ DEBUG( {
+ New(51,debname,128,char);
+ New(52,debdelim,128,char);
+ } )
+
ENTER;
}
perl_destruct(sv_interp)
register PerlInterpreter *sv_interp;
{
+ dTHR;
int destruct_level; /* 0=none, 1=full, 2=full with checks */
I32 last_sv_count;
HV *hv;
+#ifdef USE_THREADS
+ Thread t;
+#endif /* USE_THREADS */
if (!(curinterp = sv_interp))
return;
+#ifdef USE_THREADS
+#ifndef FAKE_THREADS
+ /* Pass 1 on any remaining threads: detach joinables, join zombies */
+ retry_cleanup:
+ MUTEX_LOCK(&threads_mutex);
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "perl_destruct: waiting for %d threads...\n",
+ nthreads - 1));
+ for (t = thr->next; t != thr; t = t->next) {
+ MUTEX_LOCK(&t->mutex);
+ switch (ThrSTATE(t)) {
+ AV *av;
+ case THRf_ZOMBIE:
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "perl_destruct: joining zombie %p\n", t));
+ ThrSETSTATE(t, THRf_DEAD);
+ MUTEX_UNLOCK(&t->mutex);
+ 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(&threads_mutex);
+ JOIN(t, &av);
+ SvREFCNT_dec((SV*)av);
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "perl_destruct: joined zombie %p OK\n", t));
+ goto retry_cleanup;
+ case THRf_R_JOINABLE:
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "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(&threads_mutex);
+ DETACH(t);
+ MUTEX_UNLOCK(&t->mutex);
+ goto retry_cleanup;
+ default:
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "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 (nthreads > 1)
+ {
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "perl_destruct: final wait for %d threads\n",
+ nthreads - 1));
+ COND_WAIT(&nthreads_cond, &threads_mutex);
+ }
+ /* At this point, we're the last thread */
+ MUTEX_UNLOCK(&threads_mutex);
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
+ MUTEX_DESTROY(&threads_mutex);
+ COND_DESTROY(&nthreads_cond);
+#endif /* !defined(FAKE_THREADS) */
+#endif /* USE_THREADS */
+
destruct_level = perl_destruct_level;
#ifdef DEBUGGING
{
/* startup and shutdown function lists */
SvREFCNT_dec(beginav);
SvREFCNT_dec(endav);
+ SvREFCNT_dec(initav);
beginav = Nullav;
endav = Nullav;
+ initav = Nullav;
/* temp stack during pp_sort() */
SvREFCNT_dec(sortstack);
hints = 0; /* Reset hints. Should hints be per-interpreter ? */
DEBUG_P(debprofdump());
-
+#ifdef USE_THREADS
+ MUTEX_DESTROY(&sv_mutex);
+ MUTEX_DESTROY(&malloc_mutex);
+ MUTEX_DESTROY(&eval_mutex);
+ COND_DESTROY(&eval_cond);
+
+ /* As the penultimate thing, free the non-arena SV for thrsv */
+ Safefree(SvPVX(thrsv));
+ Safefree(SvANY(thrsv));
+ Safefree(thrsv);
+ thrsv = Nullsv;
+#endif /* USE_THREADS */
+
/* As the absolutely last thing, free the non-arena SV for mess() */
if (mess_sv) {
char **argv;
char **env;
{
+ dTHR;
register SV *sv;
register char *s;
char *scriptname = NULL;
croak("No code specified for -e");
(void)PerlIO_putc(e_fp,'\n');
break;
- case 'I':
+ case 'I': /* -I handled both here and in moreswitches() */
forbid_setid("-I");
- sv_catpv(sv,"-");
- sv_catpv(sv,s);
- sv_catpv(sv," ");
- if (*++s) {
- incpush(s, TRUE);
- }
- else if (argv[1]) {
- incpush(argv[1], TRUE);
- sv_catpv(sv,argv[1]);
+ if (!*++s && (s=argv[1]) != Nullch) {
argc--,argv++;
- sv_catpv(sv," ");
}
+ while (s && isSPACE(*s))
+ ++s;
+ if (s && *s) {
+ char *e, *p;
+ for (e = s; *e && !isSPACE(*e); e++) ;
+ p = savepvn(s, e-s);
+ incpush(p, TRUE);
+ sv_catpv(sv,"-I");
+ sv_catpv(sv,p);
+ sv_catpv(sv," ");
+ Safefree(p);
+ } /* XXX else croak? */
break;
case 'P':
forbid_setid("-P");
if (*s)
cddir = savepv(s);
break;
- case '-':
- argc--,argv++;
- goto switch_end;
case 0:
break;
+ case '-':
+ if (!*++s || isSPACE(*s)) {
+ argc--,argv++;
+ goto switch_end;
+ }
+ /* catch use of gnu style long options */
+ if (strEQ(s, "version")) {
+ s = "v";
+ goto reswitch;
+ }
+ if (strEQ(s, "help")) {
+ s = "h";
+ goto reswitch;
+ }
+ s--;
+ /* FALL THROUGH */
default:
- croak("Unrecognized switch: -%s",s);
+ croak("Unrecognized switch: -%s (-h will show valid options)",s);
}
}
switch_end:
if (!tainting && (s = getenv("PERL5OPT"))) {
- for (;;) {
+ while (s && *s) {
while (isSPACE(*s))
s++;
if (*s == '-') {
comppad_name_fill = 0;
min_intro_pending = 0;
padix = 0;
+#ifdef USE_THREADS
+ av_store(comppad_name, 0, newSVpv("@_", 2));
+ curpad[0] = (SV*)newAV();
+ SvPADMY_on(curpad[0]); /* XXX Needed? */
+ CvOWNER(compcv) = 0;
+ New(666, CvMUTEXP(compcv), 1, perl_mutex);
+ MUTEX_INIT(CvMUTEXP(compcv));
+#endif /* USE_THREADS */
comppadlist = newAV();
AvREAL_off(comppadlist);
init_os_extras();
#endif
+#if defined(DEBUGGING) && defined(USE_THREADS) && defined(__linux__)
+ DEBUG_L(signal(SIGSEGV, (void(*)(int))catch_sigsegv););
+#endif
+
init_predump_symbols();
if (!do_undump)
init_postdump_symbols(argc,argv,env);
perl_run(sv_interp)
PerlInterpreter *sv_interp;
{
+ dTHR;
I32 oldscope;
dJMPENV;
int ret;
break;
}
- DEBUG_r(PerlIO_printf(PerlIO_stderr(), "%s $` $& $' support.\n",
+ DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
sawampersand ? "Enabling" : "Omitting"));
if (!restartop) {
DEBUG_x(dump_all());
DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
+#ifdef USE_THREADS
+ DEBUG_L(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
+ (unsigned long) thr));
+#endif /* USE_THREADS */
if (minus_c) {
PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", origfilename);
}
if (PERLDB_SINGLE && DBsingle)
sv_setiv(DBsingle, 1);
+ if (initav)
+ call_list(oldscope, initav);
}
/* do it */
I32 flags; /* See G_* flags in cop.h */
register char **argv; /* null terminated arg list */
{
+ dTHR;
dSP;
PUSHMARK(sp);
char *methname; /* name of the subroutine */
I32 flags; /* See G_* flags in cop.h */
{
+ dTHR;
dSP;
OP myop;
if (!op)
op = &myop;
XPUSHs(sv_2mortal(newSVpv(methname,0)));
PUTBACK;
- pp_method();
+ pp_method(ARGS);
return perl_call_sv(*stack_sp--, flags);
}
SV* sv;
I32 flags; /* See G_* flags in cop.h */
{
+ dTHR;
LOGOP myop; /* fake syntax tree node */
SV** sp = stack_sp;
I32 oldmark;
myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
(flags & G_ARRAY) ? OPf_WANT_LIST :
OPf_WANT_SCALAR);
- SAVESPTR(op);
+ SAVEOP();
op = (OP*)&myop;
EXTEND(stack_sp, 1);
CATCH_SET(TRUE);
if (op == (OP*)&myop)
- op = pp_entersub();
+ op = pp_entersub(ARGS);
if (op)
runops();
retval = stack_sp - (stack_base + oldmark);
SV* sv;
I32 flags; /* See G_* flags in cop.h */
{
+ dTHR;
UNOP myop; /* fake syntax tree node */
SV** sp = stack_sp;
I32 oldmark = sp - stack_base;
SAVETMPS;
}
- SAVESPTR(op);
+ SAVEOP();
op = (OP*)&myop;
Zero(op, 1, UNOP);
EXTEND(stack_sp, 1);
}
if (op == (OP*)&myop)
- op = pp_entereval();
+ op = pp_entereval(ARGS);
if (op)
runops();
retval = stack_sp - (stack_base + oldmark);
char* p;
I32 croak_on_error;
{
+ dTHR;
dSP;
SV* sv = newSVpv(p, 0);
{
/* This message really ought to be max 23 lines.
* Removed -h because the user already knows that opton. Others? */
+
+ static char *usage[] = {
+"-0[octal] specify record separator (\\0, if no argument)",
+"-a autosplit mode with -n or -p (splits $_ into @F)",
+"-c check syntax only (runs BEGIN and END blocks)",
+"-d[:debugger] run scripts under debugger",
+"-D[number/list] set debugging flags (argument is a bit mask or flags)",
+"-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
+"-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
+"-i[extension] edit <> files in place (make backup if extension supplied)",
+"-Idirectory specify @INC/#include directory (may be used more than once)",
+"-l[octal] enable line ending processing, specifies line terminator",
+"-[mM][-]module.. executes `use/no module...' before executing your script.",
+"-n assume 'while (<>) { ... }' loop around your script",
+"-p assume loop like -n but print line also like sed",
+"-P run script through C preprocessor before compilation",
+"-s enable some switch parsing for switches after script name",
+"-S look for the script using PATH environment variable",
+"-T turn on tainting checks",
+"-u dump core after parsing script",
+"-U allow unsafe operations",
+"-v print version number and patchlevel of perl",
+"-V[:variable] print perl configuration information",
+"-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
+"-x[directory] strip off text before #!perl line and perhaps cd to directory",
+"\n",
+NULL
+};
+ char **p = usage;
+
printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
- printf("\n -0[octal] specify record separator (\\0, if no argument)");
- printf("\n -a autosplit mode with -n or -p (splits $_ into @F)");
- printf("\n -c check syntax only (runs BEGIN and END blocks)");
- printf("\n -d[:debugger] run scripts under debugger");
- printf("\n -D[number/list] set debugging flags (argument is a bit mask or flags)");
- printf("\n -e 'command' one line of script. Several -e's allowed. Omit [programfile].");
- printf("\n -F/pattern/ split() pattern for autosplit (-a). The //'s are optional.");
- printf("\n -i[extension] edit <> files in place (make backup if extension supplied)");
- printf("\n -Idirectory specify @INC/#include directory (may be used more than once)");
- printf("\n -l[octal] enable line ending processing, specifies line terminator");
- printf("\n -[mM][-]module.. executes `use/no module...' before executing your script.");
- printf("\n -n assume 'while (<>) { ... }' loop around your script");
- printf("\n -p assume loop like -n but print line also like sed");
- printf("\n -P run script through C preprocessor before compilation");
- printf("\n -s enable some switch parsing for switches after script name");
- printf("\n -S look for the script using PATH environment variable");
- printf("\n -T turn on tainting checks");
- printf("\n -u dump core after parsing script");
- printf("\n -U allow unsafe operations");
- printf("\n -v print version number and patchlevel of perl");
- printf("\n -V[:variable] print perl configuration information");
- printf("\n -w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT.");
- printf("\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n");
+ while (*p)
+ printf("\n %s", *p++);
}
/* This routine handles any switches that can be given during run */
inplace = savepv(s+1);
/*SUPPRESS 530*/
for (s = inplace; *s && !isSPACE(*s); s++) ;
- *s = '\0';
- break;
- case 'I':
+ if (*s)
+ *s++ = '\0';
+ return s;
+ case 'I': /* -I handled both here and in parse_perl() */
forbid_setid("-I");
- if (*++s) {
+ ++s;
+ while (*s && isSPACE(*s))
+ ++s;
+ if (*s) {
char *e, *p;
for (e = s; *e && !isSPACE(*e); e++) ;
p = savepvn(s, e-s);
incpush(p, TRUE);
Safefree(p);
- if (*e)
- return e;
+ s = e;
}
else
croak("No space allowed after -I");
- break;
+ return s;
case 'l':
minus_l = TRUE;
s++;
forbid_setid("-m"); /* XXX ? */
if (*++s) {
char *start;
+ SV *sv;
char *use = "use ";
/* -M-foo == 'no foo' */
if (*s == '-') { use = "no "; ++s; }
- Sv = newSVpv(use,0);
+ sv = newSVpv(use,0);
start = s;
/* We allow -M'Module qw(Foo Bar)' */
while(isALNUM(*s) || *s==':') ++s;
if (*s != '=') {
- sv_catpv(Sv, start);
+ sv_catpv(sv, start);
if (*(start-1) == 'm') {
if (*s != '\0')
croak("Can't use '%c' after -mname", *s);
- sv_catpv( Sv, " ()");
+ sv_catpv( sv, " ()");
}
} else {
- sv_catpvn(Sv, start, s-start);
- sv_catpv(Sv, " split(/,/,q{");
- sv_catpv(Sv, ++s);
- sv_catpv(Sv, "})");
+ sv_catpvn(sv, start, s-start);
+ sv_catpv(sv, " split(/,/,q{");
+ sv_catpv(sv, ++s);
+ sv_catpv(sv, "})");
}
s += strlen(s);
if (preambleav == NULL)
preambleav = newAV();
- av_push(preambleav, Sv);
+ av_push(preambleav, sv);
}
else
croak("No space allowed after -%c", *(s-1));
return s;
case 'v':
#if defined(SUBVERSION) && SUBVERSION > 0
- printf("\nThis is perl, version 5.%03d_%02d", PATCHLEVEL, SUBVERSION);
+ printf("\nThis is perl, version 5.%03d_%02d built for %s",
+ PATCHLEVEL, SUBVERSION, ARCHNAME);
#else
- printf("\nThis is perl, version %s",patchlevel);
+ printf("\nThis is perl, version %s built for %s",
+ patchlevel, ARCHNAME);
+#endif
+#if defined(LOCAL_PATCH_COUNT)
+ if (LOCAL_PATCH_COUNT > 0)
+ printf("\n(with %d registered patch%s, see perl -V for more detail)",
+ LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
#endif
printf("\n\nCopyright 1987-1997, Larry Wall\n");
#ifdef MSDOS
- printf("\n\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
+ printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
#endif
#ifdef DJGPP
printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
static void
init_main_stash()
{
+ dTHR;
GV *gv;
/* Note that strtab is a rather special HV. Assumptions are made
SV *sv;
#endif
{
+ dTHR;
char *xfound = Nullch;
char *xfailed = Nullch;
register char *s;
*/
#ifdef DOSUID
+ dTHR;
char *s, *s2;
if (Fstat(PerlIO_fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */
#else /* !DOSUID */
if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */
#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
+ dTHR;
Fstat(PerlIO_fileno(rsfp),&statbuf); /* may be either wrapped or real suid */
if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
||
static void
init_debugger()
{
+ dTHR;
curstash = debstash;
dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
AvREAL_off(dbargs);
curstash = defstash;
}
-static void
-init_stacks()
+void
+init_stacks(ARGS)
+dARGS
{
curstack = newAV();
mainstack = curstack; /* remember in case we switch stacks */
cxstack_ix = -1;
New(50,tmps_stack,128,SV*);
+ tmps_floor = -1;
tmps_ix = -1;
tmps_max = 128;
- DEBUG( {
- New(51,debname,128,char);
- New(52,debdelim,128,char);
- } )
-
/*
* The following stacks almost certainly should be per-interpreter,
* but for now they're not. XXX
static void
nuke_stacks()
{
+ dTHR;
Safefree(cxstack);
Safefree(tmps_stack);
DEBUG( {
init_lexer()
{
tmpfp = rsfp;
+ rsfp = Nullfp;
lex_start(linestr);
rsfp = tmpfp;
subname = newSVpv("main",4);
static void
init_predump_symbols()
{
+ dTHR;
GV *tmpgv;
GV *othergv;
I32 oldscope;
AV* list;
{
+ dTHR;
line_t oldline = curcop->cop_line;
STRLEN len;
dJMPENV;
my_exit(status)
U32 status;
{
+ dTHR;
+
+#ifdef USE_THREADS
+ DEBUG_L(PerlIO_printf(Perl_debug_log, "my_exit: thread 0x%lx, status %lu\n",
+ (unsigned long) thr, (unsigned long) status));
+#endif /* USE_THREADS */
switch (status) {
case 0:
STATUS_ALL_SUCCESS;
static void
my_exit_jump()
{
+ dTHR;
register CONTEXT *cx;
I32 gimme;
SV **newsp;
https://perl5.git.perl.org / perl5.git / blobdiff