/* util.c
*
* Copyright (c) 1991-1997, 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.
*
*/
/*
* "Very useful, no doubt, that was to Saruman; yet it seems that he was
* not content." --Gandalf
*/
#include "EXTERN.h"
#include "perl.h"
#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
#include <signal.h>
#endif
#ifndef SIG_ERR
# define SIG_ERR ((Sighandler_t) -1)
#endif
/* XXX If this causes problems, set i_unistd=undef in the hint file. */
#ifdef I_UNISTD
# include <unistd.h>
#endif
#ifdef I_VFORK
# include <vfork.h>
#endif
/* Put this after #includes because fork and vfork prototypes may
conflict.
*/
#ifndef HAS_VFORK
# define vfork fork
#endif
#ifdef I_FCNTL
# include <fcntl.h>
#endif
#ifdef I_SYS_FILE
# include <sys/file.h>
#endif
#ifdef I_SYS_WAIT
# include <sys/wait.h>
#endif
#define FLUSH
#ifdef LEAKTEST
static void xstat _((void));
#endif
#ifndef MYMALLOC
/* paranoid version of malloc */
/* NOTE: Do not call the next three routines directly. Use the macros
* in handy.h, so that we can easily redefine everything to do tracking of
* allocated hunks back to the original New to track down any memory leaks.
* XXX This advice seems to be widely ignored :-( --AD August 1996.
*/
Malloc_t
safemalloc(size)
MEM_SIZE size;
{
Malloc_t ptr;
#ifdef HAS_64K_LIMIT
if (size > 0xffff) {
PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
my_exit(1);
}
#endif /* HAS_64K_LIMIT */
#ifdef DEBUGGING
if ((long)size < 0)
croak("panic: malloc");
#endif
ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
#if !(defined(I286) || defined(atarist))
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
#else
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
#endif
if (ptr != Nullch)
return ptr;
else if (nomemok)
return Nullch;
else {
PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
my_exit(1);
}
/*NOTREACHED*/
}
/* paranoid version of realloc */
Malloc_t
saferealloc(where,size)
Malloc_t where;
MEM_SIZE size;
{
Malloc_t ptr;
#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
Malloc_t realloc();
#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
#ifdef HAS_64K_LIMIT
if (size > 0xffff) {
PerlIO_printf(PerlIO_stderr(),
"Reallocation too large: %lx\n", size) FLUSH;
my_exit(1);
}
#endif /* HAS_64K_LIMIT */
if (!where)
croak("Null realloc");
#ifdef DEBUGGING
if ((long)size < 0)
croak("panic: realloc");
#endif
ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
#if !(defined(I286) || defined(atarist))
DEBUG_m( {
PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,an++);
PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
} )
#else
DEBUG_m( {
PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
} )
#endif
if (ptr != Nullch)
return ptr;
else if (nomemok)
return Nullch;
else {
PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
my_exit(1);
}
/*NOTREACHED*/
}
/* safe version of free */
Free_t
safefree(where)
Malloc_t where;
{
#if !(defined(I286) || defined(atarist))
DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",where,an++));
#else
DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",where,an++));
#endif
if (where) {
/*SUPPRESS 701*/
free(where);
}
}
/* safe version of calloc */
Malloc_t
safecalloc(count, size)
MEM_SIZE count;
MEM_SIZE size;
{
Malloc_t ptr;
#ifdef HAS_64K_LIMIT
if (size * count > 0xffff) {
PerlIO_printf(PerlIO_stderr(),
"Allocation too large: %lx\n", size * count) FLUSH;
my_exit(1);
}
#endif /* HAS_64K_LIMIT */
#ifdef DEBUGGING
if ((long)size < 0 || (long)count < 0)
croak("panic: calloc");
#endif
size *= count;
ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
#if !(defined(I286) || defined(atarist))
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
#else
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
#endif
if (ptr != Nullch) {
memset((void*)ptr, 0, size);
return ptr;
}
else if (nomemok)
return Nullch;
else {
PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
my_exit(1);
}
/*NOTREACHED*/
}
#endif /* !MYMALLOC */
#ifdef LEAKTEST
#define ALIGN sizeof(long)
Malloc_t
safexmalloc(x,size)
I32 x;
MEM_SIZE size;
{
register Malloc_t where;
where = safemalloc(size + ALIGN);
xcount[x]++;
where[0] = x % 100;
where[1] = x / 100;
return where + ALIGN;
}
Malloc_t
safexrealloc(where,size)
Malloc_t where;
MEM_SIZE size;
{
register Malloc_t new = saferealloc(where - ALIGN, size + ALIGN);
return new + ALIGN;
}
void
safexfree(where)
Malloc_t where;
{
I32 x;
if (!where)
return;
where -= ALIGN;
x = where[0] + 100 * where[1];
xcount[x]--;
safefree(where);
}
Malloc_t
safexcalloc(x,count,size)
I32 x;
MEM_SIZE count;
MEM_SIZE size;
{
register Malloc_t where;
where = safexmalloc(x, size * count + ALIGN);
xcount[x]++;
memset((void*)where + ALIGN, 0, size * count);
where[0] = x % 100;
where[1] = x / 100;
return where + ALIGN;
}
static void
xstat()
{
register I32 i;
for (i = 0; i < MAXXCOUNT; i++) {
if (xcount[i] > lastxcount[i]) {
PerlIO_printf(PerlIO_stderr(),"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]);
lastxcount[i] = xcount[i];
}
}
}
#endif /* LEAKTEST */
/* copy a string up to some (non-backslashed) delimiter, if any */
char *
delimcpy(to, toend, from, fromend, delim, retlen)
register char *to;
register char *toend;
register char *from;
register char *fromend;
register int delim;
I32 *retlen;
{
register I32 tolen;
for (tolen = 0; from < fromend; from++, tolen++) {
if (*from == '\\') {
if (from[1] == delim)
from++;
else {
if (to < toend)
*to++ = *from;
tolen++;
from++;
}
}
else if (*from == delim)
break;
if (to < toend)
*to++ = *from;
}
if (to < toend)
*to = '\0';
*retlen = tolen;
return from;
}
/* return ptr to little string in big string, NULL if not found */
/* This routine was donated by Corey Satten. */
char *
instr(big, little)
register char *big;
register char *little;
{
register char *s, *x;
register I32 first;
if (!little)
return big;
first = *little++;
if (!first)
return big;
while (*big) {
if (*big++ != first)
continue;
for (x=big,s=little; *s; /**/ ) {
if (!*x)
return Nullch;
if (*s++ != *x++) {
s--;
break;
}
}
if (!*s)
return big-1;
}
return Nullch;
}
/* same as instr but allow embedded nulls */
char *
ninstr(big, bigend, little, lend)
register char *big;
register char *bigend;
char *little;
char *lend;
{
register char *s, *x;
register I32 first = *little;
register char *littleend = lend;
if (!first && little >= littleend)
return big;
if (bigend - big < littleend - little)
return Nullch;
bigend -= littleend - little++;
while (big <= bigend) {
if (*big++ != first)
continue;
for (x=big,s=little; s < littleend; /**/ ) {
if (*s++ != *x++) {
s--;
break;
}
}
if (s >= littleend)
return big-1;
}
return Nullch;
}
/* reverse of the above--find last substring */
char *
rninstr(big, bigend, little, lend)
register char *big;
char *bigend;
char *little;
char *lend;
{
register char *bigbeg;
register char *s, *x;
register I32 first = *little;
register char *littleend = lend;
if (!first && little >= littleend)
return bigend;
bigbeg = big;
big = bigend - (littleend - little++);
while (big >= bigbeg) {
if (*big-- != first)
continue;
for (x=big+2,s=little; s < littleend; /**/ ) {
if (*s++ != *x++) {
s--;
break;
}
}
if (s >= littleend)
return big+1;
}
return Nullch;
}
/*
* Set up for a new ctype locale.
*/
void
perl_new_ctype(newctype)
char *newctype;
{
#ifdef USE_LOCALE_CTYPE
int i;
for (i = 0; i < 256; i++) {
if (isUPPER_LC(i))
fold_locale[i] = toLOWER_LC(i);
else if (isLOWER_LC(i))
fold_locale[i] = toUPPER_LC(i);
else
fold_locale[i] = i;
}
#endif /* USE_LOCALE_CTYPE */
}
/*
* Set up for a new collation locale.
*/
void
perl_new_collate(newcoll)
char *newcoll;
{
#ifdef USE_LOCALE_COLLATE
if (! newcoll) {
if (collation_name) {
++collation_ix;
Safefree(collation_name);
collation_name = NULL;
collation_standard = TRUE;
collxfrm_base = 0;
collxfrm_mult = 2;
}
return;
}
if (! collation_name || strNE(collation_name, newcoll)) {
++collation_ix;
Safefree(collation_name);
collation_name = savepv(newcoll);
collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
{
/* 2: at most so many chars ('a', 'b'). */
/* 50: surely no system expands a char more. */
#define XFRMBUFSIZE (2 * 50)
char xbuf[XFRMBUFSIZE];
Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
SSize_t mult = fb - fa;
if (mult < 1)
croak("strxfrm() gets absurd");
collxfrm_base = (fa > mult) ? (fa - mult) : 0;
collxfrm_mult = mult;
}
}
#endif /* USE_LOCALE_COLLATE */
}
/*
* Set up for a new numeric locale.
*/
void
perl_new_numeric(newnum)
char *newnum;
{
#ifdef USE_LOCALE_NUMERIC
if (! newnum) {
if (numeric_name) {
Safefree(numeric_name);
numeric_name = NULL;
numeric_standard = TRUE;
numeric_local = TRUE;
}
return;
}
if (! numeric_name || strNE(numeric_name, newnum)) {
Safefree(numeric_name);
numeric_name = savepv(newnum);
numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
numeric_local = TRUE;
}
#endif /* USE_LOCALE_NUMERIC */
}
void
perl_set_numeric_standard()
{
#ifdef USE_LOCALE_NUMERIC
if (! numeric_standard) {
setlocale(LC_NUMERIC, "C");
numeric_standard = TRUE;
numeric_local = FALSE;
}
#endif /* USE_LOCALE_NUMERIC */
}
void
perl_set_numeric_local()
{
#ifdef USE_LOCALE_NUMERIC
if (! numeric_local) {
setlocale(LC_NUMERIC, numeric_name);
numeric_standard = FALSE;
numeric_local = TRUE;
}
#endif /* USE_LOCALE_NUMERIC */
}
/*
* Initialize locale awareness.
*/
int
perl_init_i18nl10n(printwarn)
int printwarn;
{
int ok = 1;
/* returns
* 1 = set ok or not applicable,
* 0 = fallback to C locale,
* -1 = fallback to C locale failed
*/
#ifdef USE_LOCALE
#ifdef USE_LOCALE_CTYPE
char *curctype = NULL;
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
char *curcoll = NULL;
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
char *curnum = NULL;
#endif /* USE_LOCALE_NUMERIC */
char *lc_all = getenv("LC_ALL");
char *lang = getenv("LANG");
bool setlocale_failure = FALSE;
#ifdef LOCALE_ENVIRON_REQUIRED
/*
* Ultrix setlocale(..., "") fails if there are no environment
* variables from which to get a locale name.
*/
bool done = FALSE;
#ifdef LC_ALL
if (lang) {
if (setlocale(LC_ALL, ""))
done = TRUE;
else
setlocale_failure = TRUE;
}
if (!setlocale_failure)
#endif /* LC_ALL */
{
#ifdef USE_LOCALE_CTYPE
if (! (curctype = setlocale(LC_CTYPE,
(!done && (lang || getenv("LC_CTYPE")))
? "" : Nullch)))
setlocale_failure = TRUE;
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
if (! (curcoll = setlocale(LC_COLLATE,
(!done && (lang || getenv("LC_COLLATE")))
? "" : Nullch)))
setlocale_failure = TRUE;
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
if (! (curnum = setlocale(LC_NUMERIC,
(!done && (lang || getenv("LC_NUMERIC")))
? "" : Nullch)))
setlocale_failure = TRUE;
#endif /* USE_LOCALE_NUMERIC */
}
#else /* !LOCALE_ENVIRON_REQUIRED */
#ifdef LC_ALL
if (! setlocale(LC_ALL, ""))
setlocale_failure = TRUE;
else {
#ifdef USE_LOCALE_CTYPE
curctype = setlocale(LC_CTYPE, Nullch);
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
curcoll = setlocale(LC_COLLATE, Nullch);
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
curnum = setlocale(LC_NUMERIC, Nullch);
#endif /* USE_LOCALE_NUMERIC */
}
#else /* !LC_ALL */
#ifdef USE_LOCALE_CTYPE
if (! (curctype = setlocale(LC_CTYPE, "")))
setlocale_failure = TRUE;
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
if (! (curcoll = setlocale(LC_COLLATE, "")))
setlocale_failure = TRUE;
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
if (! (curnum = setlocale(LC_NUMERIC, "")))
setlocale_failure = TRUE;
#endif /* USE_LOCALE_NUMERIC */
#endif /* LC_ALL */
#endif /* !LOCALE_ENVIRON_REQUIRED */
if (setlocale_failure) {
char *p;
bool locwarn = (printwarn > 1 ||
printwarn &&
(!(p = getenv("PERL_BADLANG")) || atoi(p)));
if (locwarn) {
#ifdef LC_ALL
PerlIO_printf(PerlIO_stderr(),
"perl: warning: Setting locale failed.\n");
#else /* !LC_ALL */
PerlIO_printf(PerlIO_stderr(),
"perl: warning: Setting locale failed for the categories:\n\t");
#ifdef USE_LOCALE_CTYPE
if (! curctype)
PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
if (! curcoll)
PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
if (! curnum)
PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
#endif /* USE_LOCALE_NUMERIC */
PerlIO_printf(PerlIO_stderr(), "\n");
#endif /* LC_ALL */
PerlIO_printf(PerlIO_stderr(),
"perl: warning: Please check that your locale settings:\n");
PerlIO_printf(PerlIO_stderr(),
"\tLC_ALL = %c%s%c,\n",
lc_all ? '"' : '(',
lc_all ? lc_all : "unset",
lc_all ? '"' : ')');
{
char **e;
for (e = environ; *e; e++) {
if (strnEQ(*e, "LC_", 3)
&& strnNE(*e, "LC_ALL=", 7)
&& (p = strchr(*e, '=')))
PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
(int)(p - *e), *e, p + 1);
}
}
PerlIO_printf(PerlIO_stderr(),
"\tLANG = %c%s%c\n",
lang ? '"' : '(',
lang ? lang : "unset",
lang ? '"' : ')');
PerlIO_printf(PerlIO_stderr(),
" are supported and installed on your system.\n");
}
#ifdef LC_ALL
if (setlocale(LC_ALL, "C")) {
if (locwarn)
PerlIO_printf(PerlIO_stderr(),
"perl: warning: Falling back to the standard locale (\"C\").\n");
ok = 0;
}
else {
if (locwarn)
PerlIO_printf(PerlIO_stderr(),
"perl: warning: Failed to fall back to the standard locale (\"C\").\n");
ok = -1;
}
#else /* ! LC_ALL */
if (0
#ifdef USE_LOCALE_CTYPE
|| !(curctype || setlocale(LC_CTYPE, "C"))
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
|| !(curcoll || setlocale(LC_COLLATE, "C"))
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
|| !(curnum || setlocale(LC_NUMERIC, "C"))
#endif /* USE_LOCALE_NUMERIC */
)
{
if (locwarn)
PerlIO_printf(PerlIO_stderr(),
"perl: warning: Cannot fall back to the standard locale (\"C\").\n");
ok = -1;
}
#endif /* ! LC_ALL */
#ifdef USE_LOCALE_CTYPE
curctype = setlocale(LC_CTYPE, Nullch);
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
curcoll = setlocale(LC_COLLATE, Nullch);
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
curnum = setlocale(LC_NUMERIC, Nullch);
#endif /* USE_LOCALE_NUMERIC */
}
#ifdef USE_LOCALE_CTYPE
perl_new_ctype(curctype);
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
perl_new_collate(curcoll);
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
perl_new_numeric(curnum);
#endif /* USE_LOCALE_NUMERIC */
#endif /* USE_LOCALE */
return ok;
}
/* Backwards compatibility. */
int
perl_init_i18nl14n(printwarn)
int printwarn;
{
return perl_init_i18nl10n(printwarn);
}
#ifdef USE_LOCALE_COLLATE
/*
* mem_collxfrm() is a bit like strxfrm() but with two important
* differences. First, it handles embedded NULs. Second, it allocates
* a bit more memory than needed for the transformed data itself.
* The real transformed data begins at offset sizeof(collationix).
* Please see sv_collxfrm() to see how this is used.
*/
char *
mem_collxfrm(s, len, xlen)
const char *s;
STRLEN len;
STRLEN *xlen;
{
char *xbuf;
STRLEN xalloc, xin, xout;
/* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
/* the +1 is for the terminating NUL. */
xalloc = sizeof(collation_ix) + collxfrm_base + (collxfrm_mult * len) + 1;
New(171, xbuf, xalloc, char);
if (! xbuf)
goto bad;
*(U32*)xbuf = collation_ix;
xout = sizeof(collation_ix);
for (xin = 0; xin < len; ) {
SSize_t xused;
for (;;) {
xused = strxfrm(xbuf + xout, s + xin, xalloc - xout);
if (xused == -1)
goto bad;
if (xused < xalloc - xout)
break;
xalloc = (2 * xalloc) + 1;
Renew(xbuf, xalloc, char);
if (! xbuf)
goto bad;
}
xin += strlen(s + xin) + 1;
xout += xused;
/* Embedded NULs are understood but silently skipped
* because they make no sense in locale collation. */
}
xbuf[xout] = '\0';
*xlen = xout - sizeof(collation_ix);
return xbuf;
bad:
Safefree(xbuf);
*xlen = 0;
return NULL;
}
#endif /* USE_LOCALE_COLLATE */
void
fbm_compile(sv)
SV *sv;
{
register unsigned char *s;
register unsigned char *table;
register U32 i;
register U32 len = SvCUR(sv);
I32 rarest = 0;
U32 frequency = 256;
if (len > 255)
return; /* can't have offsets that big */
Sv_Grow(sv,len+258);
table = (unsigned char*)(SvPVX(sv) + len + 1);
s = table - 2;
for (i = 0; i < 256; i++) {
table[i] = len;
}
i = 0;
while (s >= (unsigned char*)(SvPVX(sv)))
{
if (table[*s] == len)
table[*s] = i;
s--,i++;
}
sv_upgrade(sv, SVt_PVBM);
sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
SvVALID_on(sv);
s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
for (i = 0; i < len; i++) {
if (freq[s[i]] < frequency) {
rarest = i;
frequency = freq[s[i]];
}
}
BmRARE(sv) = s[rarest];
BmPREVIOUS(sv) = rarest;
DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
}
char *
fbm_instr(big, bigend, littlestr)
unsigned char *big;
register unsigned char *bigend;
SV *littlestr;
{
register unsigned char *s;
register I32 tmp;
register I32 littlelen;
register unsigned char *little;
register unsigned char *table;
register unsigned char *olds;
register unsigned char *oldlittle;
if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
STRLEN len;
char *l = SvPV(littlestr,len);
if (!len)
return (char*)big;
return ninstr((char*)big,(char*)bigend, l, l + len);
}
littlelen = SvCUR(littlestr);
if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
if (littlelen > bigend - big)
return Nullch;
little = (unsigned char*)SvPVX(littlestr);
s = bigend - littlelen;
if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
return (char*)s; /* how sweet it is */
else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
&& s > big) {
s--;
if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
return (char*)s;
}
return Nullch;
}
table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
if (--littlelen >= bigend - big)
return Nullch;
s = big + littlelen;
oldlittle = little = table - 2;
if (s < bigend) {
top2:
/*SUPPRESS 560*/
if (tmp = table[*s]) {
#ifdef POINTERRIGOR
if (bigend - s > tmp) {
s += tmp;
goto top2;
}
#else
if ((s += tmp) < bigend)
goto top2;
#endif
return Nullch;
}
else {
tmp = littlelen; /* less expensive than calling strncmp() */
olds = s;
while (tmp--) {
if (*--s == *--little)
continue;
s = olds + 1; /* here we pay the price for failure */
little = oldlittle;
if (s < bigend) /* fake up continue to outer loop */
goto top2;
return Nullch;
}
return (char *)s;
}
}
return Nullch;
}
char *
screaminstr(bigstr, littlestr)
SV *bigstr;
SV *littlestr;
{
register unsigned char *s, *x;
register unsigned char *big;
register I32 pos;
register I32 previous;
register I32 first;
register unsigned char *little;
register unsigned char *bigend;
register unsigned char *littleend;
if ((pos = screamfirst[BmRARE(littlestr)]) < 0)
return Nullch;
little = (unsigned char *)(SvPVX(littlestr));
littleend = little + SvCUR(littlestr);
first = *little++;
previous = BmPREVIOUS(littlestr);
big = (unsigned char *)(SvPVX(bigstr));
bigend = big + SvCUR(bigstr);
while (pos < previous) {
if (!(pos += screamnext[pos]))
return Nullch;
}
#ifdef POINTERRIGOR
do {
if (big[pos-previous] != first)
continue;
for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
if (x >= bigend)
return Nullch;
if (*s++ != *x++) {
s--;
break;
}
}
if (s == littleend)
return (char *)(big+pos-previous);
} while ( pos += screamnext[pos] );
#else /* !POINTERRIGOR */
big -= previous;
do {
if (big[pos] != first)
continue;
for (x=big+pos+1,s=little; s < littleend; /**/ ) {
if (x >= bigend)
return Nullch;
if (*s++ != *x++) {
s--;
break;
}
}
if (s == littleend)
return (char *)(big+pos);
} while ( pos += screamnext[pos] );
#endif /* POINTERRIGOR */
return Nullch;
}
I32
ibcmp(s1, s2, len)
char *s1, *s2;
register I32 len;
{
register U8 *a = (U8 *)s1;
register U8 *b = (U8 *)s2;
while (len--) {
if (*a != *b && *a != fold[*b])
return 1;
a++,b++;
}
return 0;
}
I32
ibcmp_locale(s1, s2, len)
char *s1, *s2;
register I32 len;
{
register U8 *a = (U8 *)s1;
register U8 *b = (U8 *)s2;
while (len--) {
if (*a != *b && *a != fold_locale[*b])
return 1;
a++,b++;
}
return 0;
}
/* copy a string to a safe spot */
char *
savepv(sv)
char *sv;
{
register char *newaddr;
New(902,newaddr,strlen(sv)+1,char);
(void)strcpy(newaddr,sv);
return newaddr;
}
/* same thing but with a known length */
char *
savepvn(sv, len)
char *sv;
register I32 len;
{
register char *newaddr;
New(903,newaddr,len+1,char);
Copy(sv,newaddr,len,char); /* might not be null terminated */
newaddr[len] = '\0'; /* is now */
return newaddr;
}
/* the SV for form() and mess() is not kept in an arena */
static SV *
mess_alloc()
{
SV *sv;
XPVMG *any;
/* Create as PVMG now, to avoid any upgrading later */
New(905, sv, 1, SV);
Newz(905, any, 1, XPVMG);
SvFLAGS(sv) = SVt_PVMG;
SvANY(sv) = (void*)any;
SvREFCNT(sv) = 1 << 30; /* practically infinite */
return sv;
}
#ifdef I_STDARG
char *
form(const char* pat, ...)
#else
/*VARARGS0*/
char *
form(pat, va_alist)
const char *pat;
va_dcl
#endif
{
va_list args;
#ifdef I_STDARG
va_start(args, pat);
#else
va_start(args);
#endif
if (!mess_sv)
mess_sv = mess_alloc();
sv_vsetpvfn(mess_sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
va_end(args);
return SvPVX(mess_sv);
}
char *
mess(pat, args)
const char *pat;
va_list *args;
{
SV *sv;
static char dgd[] = " during global destruction.\n";
if (!mess_sv)
mess_sv = mess_alloc();
sv = mess_sv;
sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
dTHR;
if (dirty)
sv_catpv(sv, dgd);
else {
if (curcop->cop_line)
sv_catpvf(sv, " at %_ line %ld",
GvSV(curcop->cop_filegv), (long)curcop->cop_line);
if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
bool line_mode = (RsSIMPLE(rs) &&
SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
sv_catpvf(sv, ", <%s> %s %ld",
last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
line_mode ? "line" : "chunk",
(long)IoLINES(GvIOp(last_in_gv)));
}
sv_catpv(sv, ".\n");
}
}
return SvPVX(sv);
}
#ifdef I_STDARG
OP *
die(const char* pat, ...)
#else
/*VARARGS0*/
OP *
die(pat, va_alist)
const char *pat;
va_dcl
#endif
{
dTHR;
va_list args;
char *message;
I32 oldrunlevel = runlevel;
int was_in_eval = in_eval;
HV *stash;
GV *gv;
CV *cv;
DEBUG_L(PerlIO_printf(PerlIO_stderr(), "die: curstack = %p, mainstack= %p\n",
curstack, mainstack));/*debug*/
/* We have to switch back to mainstack or die_where may try to pop
* the eval block from the wrong stack if die is being called from a
* signal handler. - dkindred@cs.cmu.edu */
if (curstack != mainstack) {
dSP;
SWITCHSTACK(curstack, mainstack);
}
#ifdef I_STDARG
va_start(args, pat);
#else
va_start(args);
#endif
message = mess(pat, &args);
va_end(args);
DEBUG_L(PerlIO_printf(PerlIO_stderr(), "die: message = %s\ndiehook = %p\n",
message, diehook));/*debug*/
if (diehook) {
/* sv_2cv might call croak() */
SV *olddiehook = diehook;
ENTER;
SAVESPTR(diehook);
diehook = Nullsv;
cv = sv_2cv(olddiehook, &stash, &gv, 0);
LEAVE;
if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
dSP;
SV *msg;
ENTER;
msg = newSVpv(message, 0);
SvREADONLY_on(msg);
SAVEFREESV(msg);
PUSHMARK(sp);
XPUSHs(msg);
PUTBACK;
perl_call_sv((SV*)cv, G_DISCARD);
LEAVE;
}
}
restartop = die_where(message);
DEBUG_L(PerlIO_printf(PerlIO_stderr(),
"die: restartop = %p, was_in_eval = %d, oldrunlevel = %d\n",
restartop, was_in_eval, oldrunlevel));/*debug*/
if ((!restartop && was_in_eval) || oldrunlevel > 1)
JMPENV_JUMP(3);
return restartop;
}
#ifdef I_STDARG
void
croak(const char* pat, ...)
#else
/*VARARGS0*/
void
croak(pat, va_alist)
char *pat;
va_dcl
#endif
{
dTHR;
va_list args;
char *message;
HV *stash;
GV *gv;
CV *cv;
#ifdef I_STDARG
va_start(args, pat);
#else
va_start(args);
#endif
message = mess(pat, &args);
va_end(args);
#ifdef USE_THREADS
DEBUG_L(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
#endif /* USE_THREADS */
if (diehook) {
/* sv_2cv might call croak() */
SV *olddiehook = diehook;
ENTER;
SAVESPTR(diehook);
diehook = Nullsv;
cv = sv_2cv(olddiehook, &stash, &gv, 0);
LEAVE;
if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
dSP;
SV *msg;
ENTER;
msg = newSVpv(message, 0);
SvREADONLY_on(msg);
SAVEFREESV(msg);
PUSHMARK(sp);
XPUSHs(msg);
PUTBACK;
perl_call_sv((SV*)cv, G_DISCARD);
LEAVE;
}
}
if (in_eval) {
restartop = die_where(message);
JMPENV_JUMP(3);
}
PerlIO_puts(PerlIO_stderr(),message);
(void)PerlIO_flush(PerlIO_stderr());
my_failure_exit();
}
void
#ifdef I_STDARG
warn(const char* pat,...)
#else
/*VARARGS0*/
warn(pat,va_alist)
const char *pat;
va_dcl
#endif
{
va_list args;
char *message;
HV *stash;
GV *gv;
CV *cv;
#ifdef I_STDARG
va_start(args, pat);
#else
va_start(args);
#endif
message = mess(pat, &args);
va_end(args);
if (warnhook) {
/* sv_2cv might call warn() */
dTHR;
SV *oldwarnhook = warnhook;
ENTER;
SAVESPTR(warnhook);
warnhook = Nullsv;
cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
LEAVE;
if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
dSP;
SV *msg;
ENTER;
msg = newSVpv(message, 0);
SvREADONLY_on(msg);
SAVEFREESV(msg);
PUSHMARK(sp);
XPUSHs(msg);
PUTBACK;
perl_call_sv((SV*)cv, G_DISCARD);
LEAVE;
return;
}
}
PerlIO_puts(PerlIO_stderr(),message);
#ifdef LEAKTEST
DEBUG_L(xstat());
#endif
(void)PerlIO_flush(PerlIO_stderr());
}
#ifndef VMS /* VMS' my_setenv() is in VMS.c */
#ifndef WIN32
void
my_setenv(nam,val)
char *nam, *val;
{
register I32 i=setenv_getix(nam); /* where does it go? */
if (environ == origenviron) { /* need we copy environment? */
I32 j;
I32 max;
char **tmpenv;
/*SUPPRESS 530*/
for (max = i; environ[max]; max++) ;
New(901,tmpenv, max+2, char*);
for (j=0; j<max; j++) /* copy environment */
tmpenv[j] = savepv(environ[j]);
tmpenv[max] = Nullch;
environ = tmpenv; /* tell exec where it is now */
}
if (!val) {
Safefree(environ[i]);
while (environ[i]) {
environ[i] = environ[i+1];
i++;
}
return;
}
if (!environ[i]) { /* does not exist yet */
Renew(environ, i+2, char*); /* just expand it a bit */
environ[i+1] = Nullch; /* make sure it's null terminated */
}
else
Safefree(environ[i]);
New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
#ifndef MSDOS
(void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
#else
/* MS-DOS requires environment variable names to be in uppercase */
/* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
* some utilities and applications may break because they only look
* for upper case strings. (Fixed strupr() bug here.)]
*/
strcpy(environ[i],nam); strupr(environ[i]);
(void)sprintf(environ[i] + strlen(nam),"=%s",val);
#endif /* MSDOS */
}
#else /* if WIN32 */
void
my_setenv(nam,val)
char *nam, *val;
{
#ifdef USE_WIN32_RTL_ENV
register char *envstr;
STRLEN namlen = strlen(nam);
STRLEN vallen;
char *oldstr = environ[setenv_getix(nam)];
/* putenv() has totally broken semantics in both the Borland
* and Microsoft CRTLs. They either store the passed pointer in
* the environment without making a copy, or make a copy and don't
* free it. And on top of that, they dont free() old entries that
* are being replaced/deleted. This means the caller must
* free any old entries somehow, or we end up with a memory
* leak every time my_setenv() is called. One might think
* one could directly manipulate environ[], like the UNIX code
* above, but direct changes to environ are not allowed when
* calling putenv(), since the RTLs maintain an internal
* *copy* of environ[]. Bad, bad, *bad* stink.
* GSAR 97-06-07
*/
if (!val) {
if (!oldstr)
return;
val = "";
vallen = 0;
}
else
vallen = strlen(val);
New(904, envstr, namlen + vallen + 3, char);
(void)sprintf(envstr,"%s=%s",nam,val);
(void)putenv(envstr);
if (oldstr)
Safefree(oldstr);
#ifdef _MSC_VER
Safefree(envstr); /* MSVCRT leaks without this */
#endif
#else /* !USE_WIN32_RTL_ENV */
/* The sane way to deal with the environment.
* Has these advantages over putenv() & co.:
* * enables us to store a truly empty value in the
* environment (like in UNIX).
* * we don't have to deal with RTL globals, bugs and leaks.
* * Much faster.
* Why you may want to enable USE_WIN32_RTL_ENV:
* * environ[] and RTL functions will not reflect changes,
* which might be an issue if extensions want to access
* the env. via RTL. This cuts both ways, since RTL will
* not see changes made by extensions that call the Win32
* functions directly, either.
* GSAR 97-06-07
*/
SetEnvironmentVariable(nam,val);
#endif
}
#endif /* WIN32 */
I32
setenv_getix(nam)
char *nam;
{
register I32 i, len = strlen(nam);
for (i = 0; environ[i]; i++) {
if (
#ifdef WIN32
strnicmp(environ[i],nam,len) == 0
#else
strnEQ(environ[i],nam,len)
#endif
&& environ[i][len] == '=')
break; /* strnEQ must come first to avoid */
} /* potential SEGV's */
return i;
}
#endif /* !VMS */
#ifdef UNLINK_ALL_VERSIONS
I32
unlnk(f) /* unlink all versions of a file */
char *f;
{
I32 i;
for (i = 0; unlink(f) >= 0; i++) ;
return i ? 0 : -1;
}
#endif
#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
char *
my_bcopy(from,to,len)
register char *from;
register char *to;
register I32 len;
{
char *retval = to;
if (from - to >= 0) {
while (len--)
*to++ = *from++;
}
else {
to += len;
from += len;
while (len--)
*(--to) = *(--from);
}
return retval;
}
#endif
#ifndef HAS_MEMSET
void *
my_memset(loc,ch,len)
register char *loc;
register I32 ch;
register I32 len;
{
char *retval = loc;
while (len--)
*loc++ = ch;
return retval;
}
#endif
#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
char *
my_bzero(loc,len)
register char *loc;
register I32 len;
{
char *retval = loc;
while (len--)
*loc++ = 0;
return retval;
}
#endif
#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
I32
my_memcmp(s1,s2,len)
char *s1;
char *s2;
register I32 len;
{
register U8 *a = (U8 *)s1;
register U8 *b = (U8 *)s2;
register I32 tmp;
while (len--) {
if (tmp = *a++ - *b++)
return tmp;
}
return 0;
}
#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
#if defined(I_STDARG) || defined(I_VARARGS)
#ifndef HAS_VPRINTF
#ifdef USE_CHAR_VSPRINTF
char *
#else
int
#endif
vsprintf(dest, pat, args)
char *dest;
const char *pat;
char *args;
{
FILE fakebuf;
fakebuf._ptr = dest;
fakebuf._cnt = 32767;
#ifndef _IOSTRG
#define _IOSTRG 0
#endif
fakebuf._flag = _IOWRT|_IOSTRG;
_doprnt(pat, args, &fakebuf); /* what a kludge */
(void)putc('\0', &fakebuf);
#ifdef USE_CHAR_VSPRINTF
return(dest);
#else
return 0; /* perl doesn't use return value */
#endif
}
#endif /* HAS_VPRINTF */
#endif /* I_VARARGS || I_STDARGS */
#ifdef MYSWAP
#if BYTEORDER != 0x4321
short
#ifndef CAN_PROTOTYPE
my_swap(s)
short s;
#else
my_swap(short s)
#endif
{
#if (BYTEORDER & 1) == 0
short result;
result = ((s & 255) << 8) + ((s >> 8) & 255);
return result;
#else
return s;
#endif
}
long
#ifndef CAN_PROTOTYPE
my_htonl(l)
register long l;
#else
my_htonl(long l)
#endif
{
union {
long result;
char c[sizeof(long)];
} u;
#if BYTEORDER == 0x1234
u.c[0] = (l >> 24) & 255;
u.c[1] = (l >> 16) & 255;
u.c[2] = (l >> 8) & 255;
u.c[3] = l & 255;
return u.result;
#else
#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
croak("Unknown BYTEORDER\n");
#else
register I32 o;
register I32 s;
for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
u.c[o & 0xf] = (l >> s) & 255;
}
return u.result;
#endif
#endif
}
long
#ifndef CAN_PROTOTYPE
my_ntohl(l)
register long l;
#else
my_ntohl(long l)
#endif
{
union {
long l;
char c[sizeof(long)];
} u;
#if BYTEORDER == 0x1234
u.c[0] = (l >> 24) & 255;
u.c[1] = (l >> 16) & 255;
u.c[2] = (l >> 8) & 255;
u.c[3] = l & 255;
return u.l;
#else
#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
croak("Unknown BYTEORDER\n");
#else
register I32 o;
register I32 s;
u.l = l;
l = 0;
for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
l |= (u.c[o & 0xf] & 255) << s;
}
return l;
#endif
#endif
}
#endif /* BYTEORDER != 0x4321 */
#endif /* MYSWAP */
/*
* Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
* If these functions are defined,
* the BYTEORDER is neither 0x1234 nor 0x4321.
* However, this is not assumed.
* -DWS
*/
#define HTOV(name,type) \
type \
name (n) \
register type n; \
{ \
union { \
type value; \
char c[sizeof(type)]; \
} u; \
register I32 i; \
register I32 s; \
for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
u.c[i] = (n >> s) & 0xFF; \
} \
return u.value; \
}
#define VTOH(name,type) \
type \
name (n) \
register type n; \
{ \
union { \
type value; \
char c[sizeof(type)]; \
} u; \
register I32 i; \
register I32 s; \
u.value = n; \
n = 0; \
for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
n += (u.c[i] & 0xFF) << s; \
} \
return n; \
}
#if defined(HAS_HTOVS) && !defined(htovs)
HTOV(htovs,short)
#endif
#if defined(HAS_HTOVL) && !defined(htovl)
HTOV(htovl,long)
#endif
#if defined(HAS_VTOHS) && !defined(vtohs)
VTOH(vtohs,short)
#endif
#if defined(HAS_VTOHL) && !defined(vtohl)
VTOH(vtohl,long)
#endif
/* VMS' my_popen() is in VMS.c, same with OS/2. */
#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
PerlIO *
my_popen(cmd,mode)
char *cmd;
char *mode;
{
int p[2];
register I32 this, that;
register I32 pid;
SV *sv;
I32 doexec = strNE(cmd,"-");
#ifdef OS2
if (doexec) {
return my_syspopen(cmd,mode);
}
#endif
if (pipe(p) < 0)
return Nullfp;
this = (*mode == 'w');
that = !this;
if (doexec && tainting) {
taint_env();
taint_proper("Insecure %s%s", "EXEC");
}
while ((pid = (doexec?vfork():fork())) < 0) {
if (errno != EAGAIN) {
close(p[this]);
if (!doexec)
croak("Can't fork");
return Nullfp;
}
sleep(5);
}
if (pid == 0) {
GV* tmpgv;
#define THIS that
#define THAT this
close(p[THAT]);
if (p[THIS] != (*mode == 'r')) {
dup2(p[THIS], *mode == 'r');
close(p[THIS]);
}
if (doexec) {
#if !defined(HAS_FCNTL) || !defined(F_SETFD)
int fd;
#ifndef NOFILE
#define NOFILE 20
#endif
for (fd = maxsysfd + 1; fd < NOFILE; fd++)
close(fd);
#endif
do_exec(cmd); /* may or may not use the shell */
_exit(1);
}
/*SUPPRESS 560*/
if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
sv_setiv(GvSV(tmpgv), (IV)getpid());
forkprocess = 0;
hv_clear(pidstatus); /* we have no children */
return Nullfp;
#undef THIS
#undef THAT
}
do_execfree(); /* free any memory malloced by child on vfork */
close(p[that]);
if (p[that] < p[this]) {
dup2(p[this], p[that]);
close(p[this]);
p[this] = p[that];
}
sv = *av_fetch(fdpid,p[this],TRUE);
(void)SvUPGRADE(sv,SVt_IV);
SvIVX(sv) = pid;
forkprocess = pid;
return PerlIO_fdopen(p[this], mode);
}
#else
#if defined(atarist) || defined(DJGPP)
FILE *popen();
PerlIO *
my_popen(cmd,mode)
char *cmd;
char *mode;
{
/* Needs work for PerlIO ! */
/* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
return popen(PerlIO_exportFILE(cmd, 0), mode);
}
#endif
#endif /* !DOSISH */
#ifdef DUMP_FDS
dump_fds(s)
char *s;
{
int fd;
struct stat tmpstatbuf;
PerlIO_printf(PerlIO_stderr(),"%s", s);
for (fd = 0; fd < 32; fd++) {
if (Fstat(fd,&tmpstatbuf) >= 0)
PerlIO_printf(PerlIO_stderr()," %d",fd);
}
PerlIO_printf(PerlIO_stderr(),"\n");
}
#endif
#ifndef HAS_DUP2
int
dup2(oldfd,newfd)
int oldfd;
int newfd;
{
#if defined(HAS_FCNTL) && defined(F_DUPFD)
if (oldfd == newfd)
return oldfd;
close(newfd);
return fcntl(oldfd, F_DUPFD, newfd);
#else
#define DUP2_MAX_FDS 256
int fdtmp[DUP2_MAX_FDS];
I32 fdx = 0;
int fd;
if (oldfd == newfd)
return oldfd;
close(newfd);
/* good enough for low fd's... */
while ((fd = dup(oldfd)) != newfd && fd >= 0) {
if (fdx >= DUP2_MAX_FDS) {
close(fd);
fd = -1;
break;
}
fdtmp[fdx++] = fd;
}
while (fdx > 0)
close(fdtmp[--fdx]);
return fd;
#endif
}
#endif
#ifdef HAS_SIGACTION
Sighandler_t
rsignal(signo, handler)
int signo;
Sighandler_t handler;
{
struct sigaction act, oact;
act.sa_handler = handler;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
#ifdef SA_RESTART
act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
#endif
if (sigaction(signo, &act, &oact) == -1)
return SIG_ERR;
else
return oact.sa_handler;
}
Sighandler_t
rsignal_state(signo)
int signo;
{
struct sigaction oact;
if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
return SIG_ERR;
else
return oact.sa_handler;
}
int
rsignal_save(signo, handler, save)
int signo;
Sighandler_t handler;
Sigsave_t *save;
{
struct sigaction act;
act.sa_handler = handler;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
#ifdef SA_RESTART
act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
#endif
return sigaction(signo, &act, save);
}
int
rsignal_restore(signo, save)
int signo;
Sigsave_t *save;
{
return sigaction(signo, save, (struct sigaction *)NULL);
}
#else /* !HAS_SIGACTION */
Sighandler_t
rsignal(signo, handler)
int signo;
Sighandler_t handler;
{
return signal(signo, handler);
}
static int sig_trapped;
static
Signal_t
sig_trap(signo)
int signo;
{
sig_trapped++;
}
Sighandler_t
rsignal_state(signo)
int signo;
{
Sighandler_t oldsig;
sig_trapped = 0;
oldsig = signal(signo, sig_trap);
signal(signo, oldsig);
if (sig_trapped)
kill(getpid(), signo);
return oldsig;
}
int
rsignal_save(signo, handler, save)
int signo;
Sighandler_t handler;
Sigsave_t *save;
{
*save = signal(signo, handler);
return (*save == SIG_ERR) ? -1 : 0;
}
int
rsignal_restore(signo, save)
int signo;
Sigsave_t *save;
{
return (signal(signo, *save) == SIG_ERR) ? -1 : 0;
}
#endif /* !HAS_SIGACTION */
/* VMS' my_pclose() is in VMS.c; same with OS/2 */
#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
I32
my_pclose(ptr)
PerlIO *ptr;
{
Sigsave_t hstat, istat, qstat;
int status;
SV **svp;
int pid;
bool close_failed;
int saved_errno;
#ifdef VMS
int saved_vaxc_errno;
#endif
svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
pid = (int)SvIVX(*svp);
SvREFCNT_dec(*svp);
*svp = &sv_undef;
#ifdef OS2
if (pid == -1) { /* Opened by popen. */
return my_syspclose(ptr);
}
#endif
if ((close_failed = (PerlIO_close(ptr) == EOF))) {
saved_errno = errno;
#ifdef VMS
saved_vaxc_errno = vaxc$errno;
#endif
}
#ifdef UTS
if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
#endif
rsignal_save(SIGHUP, SIG_IGN, &hstat);
rsignal_save(SIGINT, SIG_IGN, &istat);
rsignal_save(SIGQUIT, SIG_IGN, &qstat);
do {
pid = wait4pid(pid, &status, 0);
} while (pid == -1 && errno == EINTR);
rsignal_restore(SIGHUP, &hstat);
rsignal_restore(SIGINT, &istat);
rsignal_restore(SIGQUIT, &qstat);
if (close_failed) {
SETERRNO(saved_errno, saved_vaxc_errno);
return -1;
}
return(pid < 0 ? pid : status == 0 ? 0 : (errno = 0, status));
}
#endif /* !DOSISH */
#if !defined(DOSISH) || defined(OS2)
I32
wait4pid(pid,statusp,flags)
int pid;
int *statusp;
int flags;
{
SV *sv;
SV** svp;
char spid[TYPE_CHARS(int)];
if (!pid)
return -1;
if (pid > 0) {
sprintf(spid, "%d", pid);
svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
if (svp && *svp != &sv_undef) {
*statusp = SvIVX(*svp);
(void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
return pid;
}
}
else {
HE *entry;
hv_iterinit(pidstatus);
if (entry = hv_iternext(pidstatus)) {
pid = atoi(hv_iterkey(entry,(I32*)statusp));
sv = hv_iterval(pidstatus,entry);
*statusp = SvIVX(sv);
sprintf(spid, "%d", pid);
(void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
return pid;
}
}
#ifdef HAS_WAITPID
# ifdef HAS_WAITPID_RUNTIME
if (!HAS_WAITPID_RUNTIME)
goto hard_way;
# endif
return waitpid(pid,statusp,flags);
#endif
#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
#endif
#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
hard_way:
{
I32 result;
if (flags)
croak("Can't do waitpid with flags");
else {
while ((result = wait(statusp)) != pid && pid > 0 && result >= 0)
pidgone(result,*statusp);
if (result < 0)
*statusp = -1;
}
return result;
}
#endif
}
#endif /* !DOSISH */
void
/*SUPPRESS 590*/
pidgone(pid,status)
int pid;
int status;
{
register SV *sv;
char spid[TYPE_CHARS(int)];
sprintf(spid, "%d", pid);
sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
(void)SvUPGRADE(sv,SVt_IV);
SvIVX(sv) = status;
return;
}
#if defined(atarist) || defined(OS2) || defined(DJGPP)
int pclose();
#ifdef HAS_FORK
int /* Cannot prototype with I32
in os2ish.h. */
my_syspclose(ptr)
#else
I32
my_pclose(ptr)
#endif
PerlIO *ptr;
{
/* Needs work for PerlIO ! */
FILE *f = PerlIO_findFILE(ptr);
I32 result = pclose(f);
PerlIO_releaseFILE(ptr,f);
return result;
}
#endif
void
repeatcpy(to,from,len,count)
register char *to;
register char *from;
I32 len;
register I32 count;
{
register I32 todo;
register char *frombase = from;
if (len == 1) {
todo = *from;
while (count-- > 0)
*to++ = todo;
return;
}
while (count-- > 0) {
for (todo = len; todo > 0; todo--) {
*to++ = *from++;
}
from = frombase;
}
}
#ifndef CASTNEGFLOAT
U32
cast_ulong(f)
double f;
{
long along;
#if CASTFLAGS & 2
# define BIGDOUBLE 2147483648.0
if (f >= BIGDOUBLE)
return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
#endif
if (f >= 0.0)
return (unsigned long)f;
along = (long)f;
return (unsigned long)along;
}
# undef BIGDOUBLE
#endif
#ifndef CASTI32
/* Unfortunately, on some systems the cast_uv() function doesn't
work with the system-supplied definition of ULONG_MAX. The
comparison (f >= ULONG_MAX) always comes out true. It must be a
problem with the compiler constant folding.
In any case, this workaround should be fine on any two's complement
system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
ccflags.
--Andy Dougherty <doughera@lafcol.lafayette.edu>
*/
/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
of LONG_(MIN/MAX).
-- Kenneth Albanowski <kjahds@kjahds.com>
*/
#ifndef MY_UV_MAX
# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
#endif
I32
cast_i32(f)
double f;
{
if (f >= I32_MAX)
return (I32) I32_MAX;
if (f <= I32_MIN)
return (I32) I32_MIN;
return (I32) f;
}
IV
cast_iv(f)
double f;
{
if (f >= IV_MAX)
return (IV) IV_MAX;
if (f <= IV_MIN)
return (IV) IV_MIN;
return (IV) f;
}
UV
cast_uv(f)
double f;
{
if (f >= MY_UV_MAX)
return (UV) MY_UV_MAX;
return (UV) f;
}
#endif
#ifndef HAS_RENAME
I32
same_dirent(a,b)
char *a;
char *b;
{
char *fa = strrchr(a,'/');
char *fb = strrchr(b,'/');
struct stat tmpstatbuf1;
struct stat tmpstatbuf2;
SV *tmpsv = sv_newmortal();
if (fa)
fa++;
else
fa = a;
if (fb)
fb++;
else
fb = b;
if (strNE(a,b))
return FALSE;
if (fa == a)
sv_setpv(tmpsv, ".");
else
sv_setpvn(tmpsv, a, fa - a);
if (Stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
return FALSE;
if (fb == b)
sv_setpv(tmpsv, ".");
else
sv_setpvn(tmpsv, b, fb - b);
if (Stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
return FALSE;
return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
}
#endif /* !HAS_RENAME */
UV
scan_oct(start, len, retlen)
char *start;
I32 len;
I32 *retlen;
{
register char *s = start;
register UV retval = 0;
bool overflowed = FALSE;
while (len && *s >= '0' && *s <= '7') {
register UV n = retval << 3;
if (!overflowed && (n >> 3) != retval) {
warn("Integer overflow in octal number");
overflowed = TRUE;
}
retval = n | (*s++ - '0');
len--;
}
if (dowarn && len && (*s == '8' || *s == '9'))
warn("Illegal octal digit ignored");
*retlen = s - start;
return retval;
}
UV
scan_hex(start, len, retlen)
char *start;
I32 len;
I32 *retlen;
{
register char *s = start;
register UV retval = 0;
bool overflowed = FALSE;
char *tmp;
while (len-- && *s && (tmp = strchr(hexdigit, *s))) {
register UV n = retval << 4;
if (!overflowed && (n >> 4) != retval) {
warn("Integer overflow in hex number");
overflowed = TRUE;
}
retval = n | (tmp - hexdigit) & 15;
s++;
}
*retlen = s - start;
return retval;
}
#ifdef USE_THREADS
#ifdef FAKE_THREADS
/* Very simplistic scheduler for now */
void
schedule(void)
{
thr = thr->i.next_run;
}
void
perl_cond_init(cp)
perl_cond *cp;
{
*cp = 0;
}
void
perl_cond_signal(cp)
perl_cond *cp;
{
perl_thread t;
perl_cond cond = *cp;
if (!cond)
return;
t = cond->thread;
/* Insert t in the runnable queue just ahead of us */
t->i.next_run = thr->i.next_run;
thr->i.next_run->i.prev_run = t;
t->i.prev_run = thr;
thr->i.next_run = t;
thr->i.wait_queue = 0;
/* Remove from the wait queue */
*cp = cond->next;
Safefree(cond);
}
void
perl_cond_broadcast(cp)
perl_cond *cp;
{
perl_thread t;
perl_cond cond, cond_next;
for (cond = *cp; cond; cond = cond_next) {
t = cond->thread;
/* Insert t in the runnable queue just ahead of us */
t->i.next_run = thr->i.next_run;
thr->i.next_run->i.prev_run = t;
t->i.prev_run = thr;
thr->i.next_run = t;
thr->i.wait_queue = 0;
/* Remove from the wait queue */
cond_next = cond->next;
Safefree(cond);
}
*cp = 0;
}
void
perl_cond_wait(cp)
perl_cond *cp;
{
perl_cond cond;
if (thr->i.next_run == thr)
croak("panic: perl_cond_wait called by last runnable thread");
New(666, cond, 1, struct perl_wait_queue);
cond->thread = thr;
cond->next = *cp;
*cp = cond;
thr->i.wait_queue = cond;
/* Remove ourselves from runnable queue */
thr->i.next_run->i.prev_run = thr->i.prev_run;
thr->i.prev_run->i.next_run = thr->i.next_run;
}
#endif /* FAKE_THREADS */
#ifdef OLD_PTHREADS_API
struct thread *
getTHR _((void))
{
pthread_addr_t t;
if (pthread_getspecific(thr_key, &t))
croak("panic: pthread_getspecific");
return (struct thread *) t;
}
#endif /* OLD_PTHREADS_API */
MAGIC *
condpair_magic(sv)
SV *sv;
{
MAGIC *mg;
SvUPGRADE(sv, SVt_PVMG);
mg = mg_find(sv, 'm');
if (!mg) {
condpair_t *cp;
New(53, cp, 1, condpair_t);
MUTEX_INIT(&cp->mutex);
COND_INIT(&cp->owner_cond);
COND_INIT(&cp->cond);
cp->owner = 0;
MUTEX_LOCK(&sv_mutex);
mg = mg_find(sv, 'm');
if (mg) {
/* someone else beat us to initialising it */
MUTEX_UNLOCK(&sv_mutex);
MUTEX_DESTROY(&cp->mutex);
COND_DESTROY(&cp->owner_cond);
COND_DESTROY(&cp->cond);
Safefree(cp);
}
else {
sv_magic(sv, Nullsv, 'm', 0, 0);
mg = SvMAGIC(sv);
mg->mg_ptr = (char *)cp;
mg->mg_len = sizeof(cp);
MUTEX_UNLOCK(&sv_mutex);
DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(),
"%p: condpair_magic %p\n", thr, sv));)
}
}
return mg;
}
#endif /* USE_THREADS */
#ifdef HUGE_VAL
/*
* This hack is to force load of "huge" support from libm.a
* So it is in perl for (say) POSIX to use.
* Needed for SunOS with Sun's 'acc' for example.
*/
double
Perl_huge()
{
return HUGE_VAL;
}
#endif