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freebsd/contrib/perl5/util.c
Mark Murray 120a02d4f3 Vendor import of Perl 5.006
2000-06-25 11:04:01 +00:00

3830 lines
86 KiB
C
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/* util.c
*
* Copyright (c) 1991-2000, 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"
#define PERL_IN_UTIL_C
#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_SYS_WAIT
# include <sys/wait.h>
#endif
#ifdef I_LOCALE
# include <locale.h>
#endif
#define FLUSH
#ifdef LEAKTEST
long xcount[MAXXCOUNT];
long lastxcount[MAXXCOUNT];
long xycount[MAXXCOUNT][MAXYCOUNT];
long lastxycount[MAXXCOUNT][MAXYCOUNT];
#endif
#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
# define FD_CLOEXEC 1 /* NeXT needs this */
#endif
/* paranoid version of system's 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
Perl_safesysmalloc(MEM_SIZE size)
{
dTHX;
Malloc_t ptr;
#ifdef HAS_64K_LIMIT
if (size > 0xffff) {
PerlIO_printf(Perl_error_log,
"Allocation too large: %lx\n", size) FLUSH;
my_exit(1);
}
#endif /* HAS_64K_LIMIT */
#ifdef DEBUGGING
if ((long)size < 0)
Perl_croak_nocontext("panic: malloc");
#endif
ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
PERL_ALLOC_CHECK(ptr);
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
if (ptr != Nullch)
return ptr;
else if (PL_nomemok)
return Nullch;
else {
PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
my_exit(1);
return Nullch;
}
/*NOTREACHED*/
}
/* paranoid version of system's realloc() */
Malloc_t
Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
{
dTHX;
Malloc_t ptr;
#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
Malloc_t PerlMem_realloc();
#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
#ifdef HAS_64K_LIMIT
if (size > 0xffff) {
PerlIO_printf(Perl_error_log,
"Reallocation too large: %lx\n", size) FLUSH;
my_exit(1);
}
#endif /* HAS_64K_LIMIT */
if (!size) {
safesysfree(where);
return NULL;
}
if (!where)
return safesysmalloc(size);
#ifdef DEBUGGING
if ((long)size < 0)
Perl_croak_nocontext("panic: realloc");
#endif
ptr = PerlMem_realloc(where,size);
PERL_ALLOC_CHECK(ptr);
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
if (ptr != Nullch)
return ptr;
else if (PL_nomemok)
return Nullch;
else {
PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
my_exit(1);
return Nullch;
}
/*NOTREACHED*/
}
/* safe version of system's free() */
Free_t
Perl_safesysfree(Malloc_t where)
{
#ifdef PERL_IMPLICIT_SYS
dTHX;
#endif
DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
if (where) {
/*SUPPRESS 701*/
PerlMem_free(where);
}
}
/* safe version of system's calloc() */
Malloc_t
Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
{
dTHX;
Malloc_t ptr;
#ifdef HAS_64K_LIMIT
if (size * count > 0xffff) {
PerlIO_printf(Perl_error_log,
"Allocation too large: %lx\n", size * count) FLUSH;
my_exit(1);
}
#endif /* HAS_64K_LIMIT */
#ifdef DEBUGGING
if ((long)size < 0 || (long)count < 0)
Perl_croak_nocontext("panic: calloc");
#endif
size *= count;
ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
PERL_ALLOC_CHECK(ptr);
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size));
if (ptr != Nullch) {
memset((void*)ptr, 0, size);
return ptr;
}
else if (PL_nomemok)
return Nullch;
else {
PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
my_exit(1);
return Nullch;
}
/*NOTREACHED*/
}
#ifdef LEAKTEST
struct mem_test_strut {
union {
long type;
char c[2];
} u;
long size;
};
# define ALIGN sizeof(struct mem_test_strut)
# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
# define typeof_chunk(ch) \
(((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
# define set_typeof_chunk(ch,t) \
(((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
? MAXYCOUNT - 1 \
: ( (size) > 40 \
? ((size) - 1)/8 + 5 \
: ((size) - 1)/4))
Malloc_t
Perl_safexmalloc(I32 x, MEM_SIZE size)
{
register char* where = (char*)safemalloc(size + ALIGN);
xcount[x] += size;
xycount[x][SIZE_TO_Y(size)]++;
set_typeof_chunk(where, x);
sizeof_chunk(where) = size;
return (Malloc_t)(where + ALIGN);
}
Malloc_t
Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
{
char *where = (char*)wh;
if (!wh)
return safexmalloc(0,size);
{
MEM_SIZE old = sizeof_chunk(where - ALIGN);
int t = typeof_chunk(where - ALIGN);
register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
xycount[t][SIZE_TO_Y(old)]--;
xycount[t][SIZE_TO_Y(size)]++;
xcount[t] += size - old;
sizeof_chunk(new) = size;
return (Malloc_t)(new + ALIGN);
}
}
void
Perl_safexfree(Malloc_t wh)
{
I32 x;
char *where = (char*)wh;
MEM_SIZE size;
if (!where)
return;
where -= ALIGN;
size = sizeof_chunk(where);
x = where[0] + 100 * where[1];
xcount[x] -= size;
xycount[x][SIZE_TO_Y(size)]--;
safefree(where);
}
Malloc_t
Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
{
register char * where = (char*)safexmalloc(x, size * count + ALIGN);
xcount[x] += size;
xycount[x][SIZE_TO_Y(size)]++;
memset((void*)(where + ALIGN), 0, size * count);
set_typeof_chunk(where, x);
sizeof_chunk(where) = size;
return (Malloc_t)(where + ALIGN);
}
STATIC void
S_xstat(pTHX_ int flag)
{
register I32 i, j, total = 0;
I32 subtot[MAXYCOUNT];
for (j = 0; j < MAXYCOUNT; j++) {
subtot[j] = 0;
}
PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
for (i = 0; i < MAXXCOUNT; i++) {
total += xcount[i];
for (j = 0; j < MAXYCOUNT; j++) {
subtot[j] += xycount[i][j];
}
if (flag == 0
? xcount[i] /* Have something */
: (flag == 2
? xcount[i] != lastxcount[i] /* Changed */
: xcount[i] > lastxcount[i])) { /* Growed */
PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
lastxcount[i] = xcount[i];
for (j = 0; j < MAXYCOUNT; j++) {
if ( flag == 0
? xycount[i][j] /* Have something */
: (flag == 2
? xycount[i][j] != lastxycount[i][j] /* Changed */
: xycount[i][j] > lastxycount[i][j])) { /* Growed */
PerlIO_printf(Perl_debug_log,"%3ld ",
flag == 2
? xycount[i][j] - lastxycount[i][j]
: xycount[i][j]);
lastxycount[i][j] = xycount[i][j];
} else {
PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
}
}
PerlIO_printf(Perl_debug_log, "\n");
}
}
if (flag != 2) {
PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
for (j = 0; j < MAXYCOUNT; j++) {
if (subtot[j]) {
PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
} else {
PerlIO_printf(Perl_debug_log, " . ");
}
}
PerlIO_printf(Perl_debug_log, "\n");
}
}
#endif /* LEAKTEST */
/* copy a string up to some (non-backslashed) delimiter, if any */
char *
Perl_delimcpy(pTHX_ 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 *
Perl_instr(pTHX_ register const char *big, register const char *little)
{
register const char *s, *x;
register I32 first;
if (!little)
return (char*)big;
first = *little++;
if (!first)
return (char*)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 (char*)(big-1);
}
return Nullch;
}
/* same as instr but allow embedded nulls */
char *
Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
{
register const char *s, *x;
register I32 first = *little;
register const char *littleend = lend;
if (!first && little >= littleend)
return (char*)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 (char*)(big-1);
}
return Nullch;
}
/* reverse of the above--find last substring */
char *
Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
{
register const char *bigbeg;
register const char *s, *x;
register I32 first = *little;
register const char *littleend = lend;
if (!first && little >= littleend)
return (char*)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 (char*)(big+1);
}
return Nullch;
}
/*
* Set up for a new ctype locale.
*/
void
Perl_new_ctype(pTHX_ const char *newctype)
{
#ifdef USE_LOCALE_CTYPE
int i;
for (i = 0; i < 256; i++) {
if (isUPPER_LC(i))
PL_fold_locale[i] = toLOWER_LC(i);
else if (isLOWER_LC(i))
PL_fold_locale[i] = toUPPER_LC(i);
else
PL_fold_locale[i] = i;
}
#endif /* USE_LOCALE_CTYPE */
}
/*
* Set up for a new collation locale.
*/
void
Perl_new_collate(pTHX_ const char *newcoll)
{
#ifdef USE_LOCALE_COLLATE
if (! newcoll) {
if (PL_collation_name) {
++PL_collation_ix;
Safefree(PL_collation_name);
PL_collation_name = NULL;
PL_collation_standard = TRUE;
PL_collxfrm_base = 0;
PL_collxfrm_mult = 2;
}
return;
}
if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
++PL_collation_ix;
Safefree(PL_collation_name);
PL_collation_name = savepv(newcoll);
PL_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)
Perl_croak(aTHX_ "strxfrm() gets absurd");
PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
PL_collxfrm_mult = mult;
}
}
#endif /* USE_LOCALE_COLLATE */
}
void
Perl_set_numeric_radix(pTHX)
{
#ifdef USE_LOCALE_NUMERIC
# ifdef HAS_LOCALECONV
struct lconv* lc;
lc = localeconv();
if (lc && lc->decimal_point)
/* We assume that decimal separator aka the radix
* character is always a single character. If it
* ever is a string, this needs to be rethunk. */
PL_numeric_radix = *lc->decimal_point;
else
PL_numeric_radix = 0;
# endif /* HAS_LOCALECONV */
#endif /* USE_LOCALE_NUMERIC */
}
/*
* Set up for a new numeric locale.
*/
void
Perl_new_numeric(pTHX_ const char *newnum)
{
#ifdef USE_LOCALE_NUMERIC
if (! newnum) {
if (PL_numeric_name) {
Safefree(PL_numeric_name);
PL_numeric_name = NULL;
PL_numeric_standard = TRUE;
PL_numeric_local = TRUE;
}
return;
}
if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
Safefree(PL_numeric_name);
PL_numeric_name = savepv(newnum);
PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
PL_numeric_local = TRUE;
set_numeric_radix();
}
#endif /* USE_LOCALE_NUMERIC */
}
void
Perl_set_numeric_standard(pTHX)
{
#ifdef USE_LOCALE_NUMERIC
if (! PL_numeric_standard) {
setlocale(LC_NUMERIC, "C");
PL_numeric_standard = TRUE;
PL_numeric_local = FALSE;
}
#endif /* USE_LOCALE_NUMERIC */
}
void
Perl_set_numeric_local(pTHX)
{
#ifdef USE_LOCALE_NUMERIC
if (! PL_numeric_local) {
setlocale(LC_NUMERIC, PL_numeric_name);
PL_numeric_standard = FALSE;
PL_numeric_local = TRUE;
set_numeric_radix();
}
#endif /* USE_LOCALE_NUMERIC */
}
/*
* Initialize locale awareness.
*/
int
Perl_init_i18nl10n(pTHX_ 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 */
#ifdef __GLIBC__
char *language = PerlEnv_getenv("LANGUAGE");
#endif
char *lc_all = PerlEnv_getenv("LC_ALL");
char *lang = PerlEnv_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) {
#ifdef USE_LOCALE_CTYPE
if (! (curctype =
setlocale(LC_CTYPE,
(!done && (lang || PerlEnv_getenv("LC_CTYPE")))
? "" : Nullch)))
setlocale_failure = TRUE;
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
if (! (curcoll =
setlocale(LC_COLLATE,
(!done && (lang || PerlEnv_getenv("LC_COLLATE")))
? "" : Nullch)))
setlocale_failure = TRUE;
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
if (! (curnum =
setlocale(LC_NUMERIC,
(!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
? "" : Nullch)))
setlocale_failure = TRUE;
#endif /* USE_LOCALE_NUMERIC */
}
#endif /* LC_ALL */
#endif /* !LOCALE_ENVIRON_REQUIRED */
#ifdef LC_ALL
if (! setlocale(LC_ALL, ""))
setlocale_failure = TRUE;
#endif /* LC_ALL */
if (!setlocale_failure) {
#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 */
}
if (setlocale_failure) {
char *p;
bool locwarn = (printwarn > 1 ||
(printwarn &&
(!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
if (locwarn) {
#ifdef LC_ALL
PerlIO_printf(Perl_error_log,
"perl: warning: Setting locale failed.\n");
#else /* !LC_ALL */
PerlIO_printf(Perl_error_log,
"perl: warning: Setting locale failed for the categories:\n\t");
#ifdef USE_LOCALE_CTYPE
if (! curctype)
PerlIO_printf(Perl_error_log, "LC_CTYPE ");
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
if (! curcoll)
PerlIO_printf(Perl_error_log, "LC_COLLATE ");
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
if (! curnum)
PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
#endif /* USE_LOCALE_NUMERIC */
PerlIO_printf(Perl_error_log, "\n");
#endif /* LC_ALL */
PerlIO_printf(Perl_error_log,
"perl: warning: Please check that your locale settings:\n");
#ifdef __GLIBC__
PerlIO_printf(Perl_error_log,
"\tLANGUAGE = %c%s%c,\n",
language ? '"' : '(',
language ? language : "unset",
language ? '"' : ')');
#endif
PerlIO_printf(Perl_error_log,
"\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(Perl_error_log, "\t%.*s = \"%s\",\n",
(int)(p - *e), *e, p + 1);
}
}
PerlIO_printf(Perl_error_log,
"\tLANG = %c%s%c\n",
lang ? '"' : '(',
lang ? lang : "unset",
lang ? '"' : ')');
PerlIO_printf(Perl_error_log,
" are supported and installed on your system.\n");
}
#ifdef LC_ALL
if (setlocale(LC_ALL, "C")) {
if (locwarn)
PerlIO_printf(Perl_error_log,
"perl: warning: Falling back to the standard locale (\"C\").\n");
ok = 0;
}
else {
if (locwarn)
PerlIO_printf(Perl_error_log,
"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(Perl_error_log,
"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
new_ctype(curctype);
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
new_collate(curcoll);
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
new_numeric(curnum);
#endif /* USE_LOCALE_NUMERIC */
#endif /* USE_LOCALE */
return ok;
}
/* Backwards compatibility. */
int
Perl_init_i18nl14n(pTHX_ int printwarn)
{
return 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 *
Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
{
char *xbuf;
STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
/* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
/* the +1 is for the terminating NUL. */
xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
New(171, xbuf, xAlloc, char);
if (! xbuf)
goto bad;
*(U32*)xbuf = PL_collation_ix;
xout = sizeof(PL_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(PL_collation_ix);
return xbuf;
bad:
Safefree(xbuf);
*xlen = 0;
return NULL;
}
#endif /* USE_LOCALE_COLLATE */
#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
/* As a space optimization, we do not compile tables for strings of length
0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
special-cased in fbm_instr().
If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
/*
=for apidoc fbm_compile
Analyses the string in order to make fast searches on it using fbm_instr()
-- the Boyer-Moore algorithm.
=cut
*/
void
Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
{
register U8 *s;
register U8 *table;
register U32 i;
STRLEN len;
I32 rarest = 0;
U32 frequency = 256;
if (flags & FBMcf_TAIL)
sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
s = (U8*)SvPV_force(sv, len);
(void)SvUPGRADE(sv, SVt_PVBM);
if (len == 0) /* TAIL might be on on a zero-length string. */
return;
if (len > 2) {
U8 mlen;
unsigned char *sb;
if (len > 255)
mlen = 255;
else
mlen = (U8)len;
Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
s = table - 1 - FBM_TABLE_OFFSET; /* last char */
memset((void*)table, mlen, 256);
table[-1] = (U8)flags;
i = 0;
sb = s - mlen + 1; /* first char (maybe) */
while (s >= sb) {
if (table[*s] == mlen)
table[*s] = (U8)i;
s--, i++;
}
}
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 (PL_freq[s[i]] < frequency) {
rarest = i;
frequency = PL_freq[s[i]];
}
}
BmRARE(sv) = s[rarest];
BmPREVIOUS(sv) = rarest;
BmUSEFUL(sv) = 100; /* Initial value */
if (flags & FBMcf_TAIL)
SvTAIL_on(sv);
DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
BmRARE(sv),BmPREVIOUS(sv)));
}
/* If SvTAIL(littlestr), it has a fake '\n' at end. */
/* If SvTAIL is actually due to \Z or \z, this gives false positives
if multiline */
/*
=for apidoc fbm_instr
Returns the location of the SV in the string delimited by C<str> and
C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
does not have to be fbm_compiled, but the search will not be as fast
then.
=cut
*/
char *
Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
{
register unsigned char *s;
STRLEN l;
register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
register STRLEN littlelen = l;
register I32 multiline = flags & FBMrf_MULTILINE;
if (bigend - big < littlelen) {
if ( SvTAIL(littlestr)
&& (bigend - big == littlelen - 1)
&& (littlelen == 1
|| (*big == *little && memEQ(big, little, littlelen - 1))))
return (char*)big;
return Nullch;
}
if (littlelen <= 2) { /* Special-cased */
if (littlelen == 1) {
if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
/* Know that bigend != big. */
if (bigend[-1] == '\n')
return (char *)(bigend - 1);
return (char *) bigend;
}
s = big;
while (s < bigend) {
if (*s == *little)
return (char *)s;
s++;
}
if (SvTAIL(littlestr))
return (char *) bigend;
return Nullch;
}
if (!littlelen)
return (char*)big; /* Cannot be SvTAIL! */
/* littlelen is 2 */
if (SvTAIL(littlestr) && !multiline) {
if (bigend[-1] == '\n' && bigend[-2] == *little)
return (char*)bigend - 2;
if (bigend[-1] == *little)
return (char*)bigend - 1;
return Nullch;
}
{
/* This should be better than FBM if c1 == c2, and almost
as good otherwise: maybe better since we do less indirection.
And we save a lot of memory by caching no table. */
register unsigned char c1 = little[0];
register unsigned char c2 = little[1];
s = big + 1;
bigend--;
if (c1 != c2) {
while (s <= bigend) {
if (s[0] == c2) {
if (s[-1] == c1)
return (char*)s - 1;
s += 2;
continue;
}
next_chars:
if (s[0] == c1) {
if (s == bigend)
goto check_1char_anchor;
if (s[1] == c2)
return (char*)s;
else {
s++;
goto next_chars;
}
}
else
s += 2;
}
goto check_1char_anchor;
}
/* Now c1 == c2 */
while (s <= bigend) {
if (s[0] == c1) {
if (s[-1] == c1)
return (char*)s - 1;
if (s == bigend)
goto check_1char_anchor;
if (s[1] == c1)
return (char*)s;
s += 3;
}
else
s += 2;
}
}
check_1char_anchor: /* One char and anchor! */
if (SvTAIL(littlestr) && (*bigend == *little))
return (char *)bigend; /* bigend is already decremented. */
return Nullch;
}
if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
s = bigend - littlelen;
if (s >= big && bigend[-1] == '\n' && *s == *little
/* Automatically of length > 2 */
&& memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
{
return (char*)s; /* how sweet it is */
}
if (s[1] == *little
&& memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
{
return (char*)s + 1; /* how sweet it is */
}
return Nullch;
}
if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
char *b = ninstr((char*)big,(char*)bigend,
(char*)little, (char*)little + littlelen);
if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
/* Chop \n from littlestr: */
s = bigend - littlelen + 1;
if (*s == *little
&& memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
{
return (char*)s;
}
return Nullch;
}
return b;
}
{ /* Do actual FBM. */
register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
register unsigned char *oldlittle;
if (littlelen > bigend - big)
return Nullch;
--littlelen; /* Last char found by table lookup */
s = big + littlelen;
little += littlelen; /* last char */
oldlittle = little;
if (s < bigend) {
register I32 tmp;
top2:
/*SUPPRESS 560*/
if ((tmp = table[*s])) {
#ifdef POINTERRIGOR
if (bigend - s > tmp) {
s += tmp;
goto top2;
}
s += tmp;
#else
if ((s += tmp) < bigend)
goto top2;
#endif
goto check_end;
}
else { /* less expensive than calling strncmp() */
register unsigned char *olds = s;
tmp = littlelen;
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;
goto check_end;
}
return (char *)s;
}
}
check_end:
if ( s == bigend && (table[-1] & FBMcf_TAIL)
&& memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
return (char*)bigend - littlelen;
return Nullch;
}
}
/* start_shift, end_shift are positive quantities which give offsets
of ends of some substring of bigstr.
If `last' we want the last occurence.
old_posp is the way of communication between consequent calls if
the next call needs to find the .
The initial *old_posp should be -1.
Note that we take into account SvTAIL, so one can get extra
optimizations if _ALL flag is set.
*/
/* If SvTAIL is actually due to \Z or \z, this gives false positives
if PL_multiline. In fact if !PL_multiline the autoritative answer
is not supported yet. */
char *
Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
{
dTHR;
register unsigned char *s, *x;
register unsigned char *big;
register I32 pos;
register I32 previous;
register I32 first;
register unsigned char *little;
register I32 stop_pos;
register unsigned char *littleend;
I32 found = 0;
if (*old_posp == -1
? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
: (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
cant_find:
if ( BmRARE(littlestr) == '\n'
&& BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
little = (unsigned char *)(SvPVX(littlestr));
littleend = little + SvCUR(littlestr);
first = *little++;
goto check_tail;
}
return Nullch;
}
little = (unsigned char *)(SvPVX(littlestr));
littleend = little + SvCUR(littlestr);
first = *little++;
/* The value of pos we can start at: */
previous = BmPREVIOUS(littlestr);
big = (unsigned char *)(SvPVX(bigstr));
/* The value of pos we can stop at: */
stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
if (previous + start_shift > stop_pos) {
if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
goto check_tail;
return Nullch;
}
while (pos < previous + start_shift) {
if (!(pos += PL_screamnext[pos]))
goto cant_find;
}
#ifdef POINTERRIGOR
do {
if (pos >= stop_pos) break;
if (big[pos-previous] != first)
continue;
for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
if (*s++ != *x++) {
s--;
break;
}
}
if (s == littleend) {
*old_posp = pos;
if (!last) return (char *)(big+pos-previous);
found = 1;
}
} while ( pos += PL_screamnext[pos] );
return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
#else /* !POINTERRIGOR */
big -= previous;
do {
if (pos >= stop_pos) break;
if (big[pos] != first)
continue;
for (x=big+pos+1,s=little; s < littleend; /**/ ) {
if (*s++ != *x++) {
s--;
break;
}
}
if (s == littleend) {
*old_posp = pos;
if (!last) return (char *)(big+pos);
found = 1;
}
} while ( pos += PL_screamnext[pos] );
if (last && found)
return (char *)(big+(*old_posp));
#endif /* POINTERRIGOR */
check_tail:
if (!SvTAIL(littlestr) || (end_shift > 0))
return Nullch;
/* Ignore the trailing "\n". This code is not microoptimized */
big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
stop_pos = littleend - little; /* Actual littlestr len */
if (stop_pos == 0)
return (char*)big;
big -= stop_pos;
if (*big == first
&& ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
return (char*)big;
return Nullch;
}
I32
Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
{
register U8 *a = (U8 *)s1;
register U8 *b = (U8 *)s2;
while (len--) {
if (*a != *b && *a != PL_fold[*b])
return 1;
a++,b++;
}
return 0;
}
I32
Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
{
register U8 *a = (U8 *)s1;
register U8 *b = (U8 *)s2;
while (len--) {
if (*a != *b && *a != PL_fold_locale[*b])
return 1;
a++,b++;
}
return 0;
}
/* copy a string to a safe spot */
/*
=for apidoc savepv
Copy a string to a safe spot. This does not use an SV.
=cut
*/
char *
Perl_savepv(pTHX_ const 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 */
/*
=for apidoc savepvn
Copy a string to a safe spot. The C<len> indicates number of bytes to
copy. This does not use an SV.
=cut
*/
char *
Perl_savepvn(pTHX_ const 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 Perl_form() and mess() is not kept in an arena */
STATIC SV *
S_mess_alloc(pTHX)
{
dTHR;
SV *sv;
XPVMG *any;
if (!PL_dirty)
return sv_2mortal(newSVpvn("",0));
if (PL_mess_sv)
return PL_mess_sv;
/* 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 */
PL_mess_sv = sv;
return sv;
}
#if defined(PERL_IMPLICIT_CONTEXT)
char *
Perl_form_nocontext(const char* pat, ...)
{
dTHX;
char *retval;
va_list args;
va_start(args, pat);
retval = vform(pat, &args);
va_end(args);
return retval;
}
#endif /* PERL_IMPLICIT_CONTEXT */
char *
Perl_form(pTHX_ const char* pat, ...)
{
char *retval;
va_list args;
va_start(args, pat);
retval = vform(pat, &args);
va_end(args);
return retval;
}
char *
Perl_vform(pTHX_ const char *pat, va_list *args)
{
SV *sv = mess_alloc();
sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
return SvPVX(sv);
}
#if defined(PERL_IMPLICIT_CONTEXT)
SV *
Perl_mess_nocontext(const char *pat, ...)
{
dTHX;
SV *retval;
va_list args;
va_start(args, pat);
retval = vmess(pat, &args);
va_end(args);
return retval;
}
#endif /* PERL_IMPLICIT_CONTEXT */
SV *
Perl_mess(pTHX_ const char *pat, ...)
{
SV *retval;
va_list args;
va_start(args, pat);
retval = vmess(pat, &args);
va_end(args);
return retval;
}
SV *
Perl_vmess(pTHX_ const char *pat, va_list *args)
{
SV *sv = mess_alloc();
static char dgd[] = " during global destruction.\n";
sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
dTHR;
if (CopLINE(PL_curcop))
Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
bool line_mode = (RsSIMPLE(PL_rs) &&
SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
line_mode ? "line" : "chunk",
(IV)IoLINES(GvIOp(PL_last_in_gv)));
}
#ifdef USE_THREADS
if (thr->tid)
Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
#endif
sv_catpv(sv, PL_dirty ? dgd : ".\n");
}
return sv;
}
OP *
Perl_vdie(pTHX_ const char* pat, va_list *args)
{
dTHR;
char *message;
int was_in_eval = PL_in_eval;
HV *stash;
GV *gv;
CV *cv;
SV *msv;
STRLEN msglen;
DEBUG_S(PerlIO_printf(Perl_debug_log,
"%p: die: curstack = %p, mainstack = %p\n",
thr, PL_curstack, PL_mainstack));
if (pat) {
msv = vmess(pat, args);
if (PL_errors && SvCUR(PL_errors)) {
sv_catsv(PL_errors, msv);
message = SvPV(PL_errors, msglen);
SvCUR_set(PL_errors, 0);
}
else
message = SvPV(msv,msglen);
}
else {
message = Nullch;
msglen = 0;
}
DEBUG_S(PerlIO_printf(Perl_debug_log,
"%p: die: message = %s\ndiehook = %p\n",
thr, message, PL_diehook));
if (PL_diehook) {
/* sv_2cv might call Perl_croak() */
SV *olddiehook = PL_diehook;
ENTER;
SAVESPTR(PL_diehook);
PL_diehook = Nullsv;
cv = sv_2cv(olddiehook, &stash, &gv, 0);
LEAVE;
if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
dSP;
SV *msg;
ENTER;
save_re_context();
if (message) {
msg = newSVpvn(message, msglen);
SvREADONLY_on(msg);
SAVEFREESV(msg);
}
else {
msg = ERRSV;
}
PUSHSTACKi(PERLSI_DIEHOOK);
PUSHMARK(SP);
XPUSHs(msg);
PUTBACK;
call_sv((SV*)cv, G_DISCARD);
POPSTACK;
LEAVE;
}
}
PL_restartop = die_where(message, msglen);
DEBUG_S(PerlIO_printf(Perl_debug_log,
"%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
thr, PL_restartop, was_in_eval, PL_top_env));
if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
JMPENV_JUMP(3);
return PL_restartop;
}
#if defined(PERL_IMPLICIT_CONTEXT)
OP *
Perl_die_nocontext(const char* pat, ...)
{
dTHX;
OP *o;
va_list args;
va_start(args, pat);
o = vdie(pat, &args);
va_end(args);
return o;
}
#endif /* PERL_IMPLICIT_CONTEXT */
OP *
Perl_die(pTHX_ const char* pat, ...)
{
OP *o;
va_list args;
va_start(args, pat);
o = vdie(pat, &args);
va_end(args);
return o;
}
void
Perl_vcroak(pTHX_ const char* pat, va_list *args)
{
dTHR;
char *message;
HV *stash;
GV *gv;
CV *cv;
SV *msv;
STRLEN msglen;
msv = vmess(pat, args);
if (PL_errors && SvCUR(PL_errors)) {
sv_catsv(PL_errors, msv);
message = SvPV(PL_errors, msglen);
SvCUR_set(PL_errors, 0);
}
else
message = SvPV(msv,msglen);
DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
PTR2UV(thr), message));
if (PL_diehook) {
/* sv_2cv might call Perl_croak() */
SV *olddiehook = PL_diehook;
ENTER;
SAVESPTR(PL_diehook);
PL_diehook = Nullsv;
cv = sv_2cv(olddiehook, &stash, &gv, 0);
LEAVE;
if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
dSP;
SV *msg;
ENTER;
save_re_context();
msg = newSVpvn(message, msglen);
SvREADONLY_on(msg);
SAVEFREESV(msg);
PUSHSTACKi(PERLSI_DIEHOOK);
PUSHMARK(SP);
XPUSHs(msg);
PUTBACK;
call_sv((SV*)cv, G_DISCARD);
POPSTACK;
LEAVE;
}
}
if (PL_in_eval) {
PL_restartop = die_where(message, msglen);
JMPENV_JUMP(3);
}
{
#ifdef USE_SFIO
/* SFIO can really mess with your errno */
int e = errno;
#endif
PerlIO *serr = Perl_error_log;
PerlIO_write(serr, message, msglen);
(void)PerlIO_flush(serr);
#ifdef USE_SFIO
errno = e;
#endif
}
my_failure_exit();
}
#if defined(PERL_IMPLICIT_CONTEXT)
void
Perl_croak_nocontext(const char *pat, ...)
{
dTHX;
va_list args;
va_start(args, pat);
vcroak(pat, &args);
/* NOTREACHED */
va_end(args);
}
#endif /* PERL_IMPLICIT_CONTEXT */
/*
=for apidoc croak
This is the XSUB-writer's interface to Perl's C<die> function. Use this
function the same way you use the C C<printf> function. See
C<warn>.
=cut
*/
void
Perl_croak(pTHX_ const char *pat, ...)
{
va_list args;
va_start(args, pat);
vcroak(pat, &args);
/* NOTREACHED */
va_end(args);
}
void
Perl_vwarn(pTHX_ const char* pat, va_list *args)
{
char *message;
HV *stash;
GV *gv;
CV *cv;
SV *msv;
STRLEN msglen;
msv = vmess(pat, args);
message = SvPV(msv, msglen);
if (PL_warnhook) {
/* sv_2cv might call Perl_warn() */
dTHR;
SV *oldwarnhook = PL_warnhook;
ENTER;
SAVESPTR(PL_warnhook);
PL_warnhook = Nullsv;
cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
LEAVE;
if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
dSP;
SV *msg;
ENTER;
save_re_context();
msg = newSVpvn(message, msglen);
SvREADONLY_on(msg);
SAVEFREESV(msg);
PUSHSTACKi(PERLSI_WARNHOOK);
PUSHMARK(SP);
XPUSHs(msg);
PUTBACK;
call_sv((SV*)cv, G_DISCARD);
POPSTACK;
LEAVE;
return;
}
}
{
PerlIO *serr = Perl_error_log;
PerlIO_write(serr, message, msglen);
#ifdef LEAKTEST
DEBUG_L(*message == '!'
? (xstat(message[1]=='!'
? (message[2]=='!' ? 2 : 1)
: 0)
, 0)
: 0);
#endif
(void)PerlIO_flush(serr);
}
}
#if defined(PERL_IMPLICIT_CONTEXT)
void
Perl_warn_nocontext(const char *pat, ...)
{
dTHX;
va_list args;
va_start(args, pat);
vwarn(pat, &args);
va_end(args);
}
#endif /* PERL_IMPLICIT_CONTEXT */
/*
=for apidoc warn
This is the XSUB-writer's interface to Perl's C<warn> function. Use this
function the same way you use the C C<printf> function. See
C<croak>.
=cut
*/
void
Perl_warn(pTHX_ const char *pat, ...)
{
va_list args;
va_start(args, pat);
vwarn(pat, &args);
va_end(args);
}
#if defined(PERL_IMPLICIT_CONTEXT)
void
Perl_warner_nocontext(U32 err, const char *pat, ...)
{
dTHX;
va_list args;
va_start(args, pat);
vwarner(err, pat, &args);
va_end(args);
}
#endif /* PERL_IMPLICIT_CONTEXT */
void
Perl_warner(pTHX_ U32 err, const char* pat,...)
{
va_list args;
va_start(args, pat);
vwarner(err, pat, &args);
va_end(args);
}
void
Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
{
dTHR;
char *message;
HV *stash;
GV *gv;
CV *cv;
SV *msv;
STRLEN msglen;
msv = vmess(pat, args);
message = SvPV(msv, msglen);
if (ckDEAD(err)) {
#ifdef USE_THREADS
DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
#endif /* USE_THREADS */
if (PL_diehook) {
/* sv_2cv might call Perl_croak() */
SV *olddiehook = PL_diehook;
ENTER;
SAVESPTR(PL_diehook);
PL_diehook = Nullsv;
cv = sv_2cv(olddiehook, &stash, &gv, 0);
LEAVE;
if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
dSP;
SV *msg;
ENTER;
save_re_context();
msg = newSVpvn(message, msglen);
SvREADONLY_on(msg);
SAVEFREESV(msg);
PUSHSTACKi(PERLSI_DIEHOOK);
PUSHMARK(sp);
XPUSHs(msg);
PUTBACK;
call_sv((SV*)cv, G_DISCARD);
POPSTACK;
LEAVE;
}
}
if (PL_in_eval) {
PL_restartop = die_where(message, msglen);
JMPENV_JUMP(3);
}
{
PerlIO *serr = Perl_error_log;
PerlIO_write(serr, message, msglen);
(void)PerlIO_flush(serr);
}
my_failure_exit();
}
else {
if (PL_warnhook) {
/* sv_2cv might call Perl_warn() */
dTHR;
SV *oldwarnhook = PL_warnhook;
ENTER;
SAVESPTR(PL_warnhook);
PL_warnhook = Nullsv;
cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
LEAVE;
if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
dSP;
SV *msg;
ENTER;
save_re_context();
msg = newSVpvn(message, msglen);
SvREADONLY_on(msg);
SAVEFREESV(msg);
PUSHSTACKi(PERLSI_WARNHOOK);
PUSHMARK(sp);
XPUSHs(msg);
PUTBACK;
call_sv((SV*)cv, G_DISCARD);
POPSTACK;
LEAVE;
return;
}
}
{
PerlIO *serr = Perl_error_log;
PerlIO_write(serr, message, msglen);
#ifdef LEAKTEST
DEBUG_L(xstat());
#endif
(void)PerlIO_flush(serr);
}
}
}
#ifndef VMS /* VMS' my_setenv() is in VMS.c */
#if !defined(WIN32) && !defined(__CYGWIN__)
void
Perl_my_setenv(pTHX_ char *nam, char *val)
{
#ifndef PERL_USE_SAFE_PUTENV
/* most putenv()s leak, so we manipulate environ directly */
register I32 i=setenv_getix(nam); /* where does it go? */
if (environ == PL_origenviron) { /* need we copy environment? */
I32 j;
I32 max;
char **tmpenv;
/*SUPPRESS 530*/
for (max = i; environ[max]; max++) ;
tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
for (j=0; j<max; j++) { /* copy environment */
tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
strcpy(tmpenv[j], environ[j]);
}
tmpenv[max] = Nullch;
environ = tmpenv; /* tell exec where it is now */
}
if (!val) {
safesysfree(environ[i]);
while (environ[i]) {
environ[i] = environ[i+1];
i++;
}
return;
}
if (!environ[i]) { /* does not exist yet */
environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
environ[i+1] = Nullch; /* make sure it's null terminated */
}
else
safesysfree(environ[i]);
environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
(void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
#else /* PERL_USE_SAFE_PUTENV */
char *new_env;
new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
(void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
(void)putenv(new_env);
#endif /* PERL_USE_SAFE_PUTENV */
}
#else /* WIN32 || __CYGWIN__ */
#if defined(__CYGWIN__)
/*
* Save environ of perl.exe, currently Cygwin links in separate environ's
* for each exe/dll. Probably should be a member of impure_ptr.
*/
static char ***Perl_main_environ;
EXTERN_C void
Perl_my_setenv_init(char ***penviron)
{
Perl_main_environ = penviron;
}
void
Perl_my_setenv(pTHX_ char *nam, char *val)
{
/* You can not directly manipulate the environ[] array because
* the routines do some additional work that syncs the Cygwin
* environment with the Windows environment.
*/
char *oldstr = environ[setenv_getix(nam)];
if (!val) {
if (!oldstr)
return;
unsetenv(nam);
safesysfree(oldstr);
return;
}
setenv(nam, val, 1);
environ = *Perl_main_environ; /* environ realloc can occur in setenv */
if(oldstr && environ[setenv_getix(nam)] != oldstr)
safesysfree(oldstr);
}
#else /* if WIN32 */
void
Perl_my_setenv(pTHX_ char *nam,char *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);
envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
(void)sprintf(envstr,"%s=%s",nam,val);
(void)PerlEnv_putenv(envstr);
if (oldstr)
safesysfree(oldstr);
#ifdef _MSC_VER
safesysfree(envstr); /* MSVCRT leaks without this */
#endif
#else /* !USE_WIN32_RTL_ENV */
register char *envstr;
STRLEN len = strlen(nam) + 3;
if (!val) {
val = "";
}
len += strlen(val);
New(904, envstr, len, char);
(void)sprintf(envstr,"%s=%s",nam,val);
(void)PerlEnv_putenv(envstr);
Safefree(envstr);
#endif
}
#endif /* WIN32 */
#endif
I32
Perl_setenv_getix(pTHX_ 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
Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
{
I32 i;
for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
return i ? 0 : -1;
}
#endif
/* this is a drop-in replacement for bcopy() */
#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
char *
Perl_my_bcopy(register const 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
/* this is a drop-in replacement for memset() */
#ifndef HAS_MEMSET
void *
Perl_my_memset(register char *loc, register I32 ch, register I32 len)
{
char *retval = loc;
while (len--)
*loc++ = ch;
return retval;
}
#endif
/* this is a drop-in replacement for bzero() */
#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
char *
Perl_my_bzero(register char *loc, register I32 len)
{
char *retval = loc;
while (len--)
*loc++ = 0;
return retval;
}
#endif
/* this is a drop-in replacement for memcmp() */
#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
I32
Perl_my_memcmp(const char *s1, const 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 */
#ifndef HAS_VPRINTF
#ifdef USE_CHAR_VSPRINTF
char *
#else
int
#endif
vsprintf(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 */
#ifdef MYSWAP
#if BYTEORDER != 0x4321
short
Perl_my_swap(pTHX_ short s)
{
#if (BYTEORDER & 1) == 0
short result;
result = ((s & 255) << 8) + ((s >> 8) & 255);
return result;
#else
return s;
#endif
}
long
Perl_my_htonl(pTHX_ long l)
{
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)
Perl_croak(aTHX_ "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
Perl_my_ntohl(pTHX_ long l)
{
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)
Perl_croak(aTHX_ "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 (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 (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) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
PerlIO *
Perl_my_popen(pTHX_ char *cmd, char *mode)
{
int p[2];
register I32 This, that;
register Pid_t pid;
SV *sv;
I32 doexec = strNE(cmd,"-");
I32 did_pipes = 0;
int pp[2];
PERL_FLUSHALL_FOR_CHILD;
#ifdef OS2
if (doexec) {
return my_syspopen(cmd,mode);
}
#endif
This = (*mode == 'w');
that = !This;
if (doexec && PL_tainting) {
taint_env();
taint_proper("Insecure %s%s", "EXEC");
}
if (PerlProc_pipe(p) < 0)
return Nullfp;
if (doexec && PerlProc_pipe(pp) >= 0)
did_pipes = 1;
while ((pid = (doexec?vfork():fork())) < 0) {
if (errno != EAGAIN) {
PerlLIO_close(p[This]);
if (did_pipes) {
PerlLIO_close(pp[0]);
PerlLIO_close(pp[1]);
}
if (!doexec)
Perl_croak(aTHX_ "Can't fork");
return Nullfp;
}
sleep(5);
}
if (pid == 0) {
GV* tmpgv;
#undef THIS
#undef THAT
#define THIS that
#define THAT This
PerlLIO_close(p[THAT]);
if (did_pipes) {
PerlLIO_close(pp[0]);
#if defined(HAS_FCNTL) && defined(F_SETFD)
fcntl(pp[1], F_SETFD, FD_CLOEXEC);
#endif
}
if (p[THIS] != (*mode == 'r')) {
PerlLIO_dup2(p[THIS], *mode == 'r');
PerlLIO_close(p[THIS]);
}
#ifndef OS2
if (doexec) {
#if !defined(HAS_FCNTL) || !defined(F_SETFD)
int fd;
#ifndef NOFILE
#define NOFILE 20
#endif
for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
if (fd != pp[1])
PerlLIO_close(fd);
#endif
do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
PerlProc__exit(1);
}
#endif /* defined OS2 */
/*SUPPRESS 560*/
if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
sv_setiv(GvSV(tmpgv), PerlProc_getpid());
PL_forkprocess = 0;
hv_clear(PL_pidstatus); /* we have no children */
return Nullfp;
#undef THIS
#undef THAT
}
do_execfree(); /* free any memory malloced by child on vfork */
PerlLIO_close(p[that]);
if (did_pipes)
PerlLIO_close(pp[1]);
if (p[that] < p[This]) {
PerlLIO_dup2(p[This], p[that]);
PerlLIO_close(p[This]);
p[This] = p[that];
}
sv = *av_fetch(PL_fdpid,p[This],TRUE);
(void)SvUPGRADE(sv,SVt_IV);
SvIVX(sv) = pid;
PL_forkprocess = pid;
if (did_pipes && pid > 0) {
int errkid;
int n = 0, n1;
while (n < sizeof(int)) {
n1 = PerlLIO_read(pp[0],
(void*)(((char*)&errkid)+n),
(sizeof(int)) - n);
if (n1 <= 0)
break;
n += n1;
}
PerlLIO_close(pp[0]);
did_pipes = 0;
if (n) { /* Error */
if (n != sizeof(int))
Perl_croak(aTHX_ "panic: kid popen errno read");
errno = errkid; /* Propagate errno from kid */
return Nullfp;
}
}
if (did_pipes)
PerlLIO_close(pp[0]);
return PerlIO_fdopen(p[This], mode);
}
#else
#if defined(atarist) || defined(DJGPP)
FILE *popen();
PerlIO *
Perl_my_popen(pTHX_ char *cmd, char *mode)
{
/* Needs work for PerlIO ! */
/* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
PERL_FLUSHALL_FOR_CHILD;
return popen(PerlIO_exportFILE(cmd, 0), mode);
}
#endif
#endif /* !DOSISH */
#ifdef DUMP_FDS
void
Perl_dump_fds(pTHX_ char *s)
{
int fd;
struct stat tmpstatbuf;
PerlIO_printf(Perl_debug_log,"%s", s);
for (fd = 0; fd < 32; fd++) {
if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
PerlIO_printf(Perl_debug_log," %d",fd);
}
PerlIO_printf(Perl_debug_log,"\n");
}
#endif /* DUMP_FDS */
#ifndef HAS_DUP2
int
dup2(int oldfd, int newfd)
{
#if defined(HAS_FCNTL) && defined(F_DUPFD)
if (oldfd == newfd)
return oldfd;
PerlLIO_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;
PerlLIO_close(newfd);
/* good enough for low fd's... */
while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
if (fdx >= DUP2_MAX_FDS) {
PerlLIO_close(fd);
fd = -1;
break;
}
fdtmp[fdx++] = fd;
}
while (fdx > 0)
PerlLIO_close(fdtmp[--fdx]);
return fd;
#endif
}
#endif
#ifdef HAS_SIGACTION
Sighandler_t
Perl_rsignal(pTHX_ 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
#ifdef SA_NOCLDWAIT
if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
act.sa_flags |= SA_NOCLDWAIT;
#endif
if (sigaction(signo, &act, &oact) == -1)
return SIG_ERR;
else
return oact.sa_handler;
}
Sighandler_t
Perl_rsignal_state(pTHX_ int signo)
{
struct sigaction oact;
if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
return SIG_ERR;
else
return oact.sa_handler;
}
int
Perl_rsignal_save(pTHX_ 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
#ifdef SA_NOCLDWAIT
if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
act.sa_flags |= SA_NOCLDWAIT;
#endif
return sigaction(signo, &act, save);
}
int
Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
{
return sigaction(signo, save, (struct sigaction *)NULL);
}
#else /* !HAS_SIGACTION */
Sighandler_t
Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
{
return PerlProc_signal(signo, handler);
}
static int sig_trapped;
static
Signal_t
sig_trap(int signo)
{
sig_trapped++;
}
Sighandler_t
Perl_rsignal_state(pTHX_ int signo)
{
Sighandler_t oldsig;
sig_trapped = 0;
oldsig = PerlProc_signal(signo, sig_trap);
PerlProc_signal(signo, oldsig);
if (sig_trapped)
PerlProc_kill(PerlProc_getpid(), signo);
return oldsig;
}
int
Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
{
*save = PerlProc_signal(signo, handler);
return (*save == SIG_ERR) ? -1 : 0;
}
int
Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
{
return (PerlProc_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) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
I32
Perl_my_pclose(pTHX_ PerlIO *ptr)
{
Sigsave_t hstat, istat, qstat;
int status;
SV **svp;
Pid_t pid;
Pid_t pid2;
bool close_failed;
int saved_errno;
#ifdef VMS
int saved_vaxc_errno;
#endif
#ifdef WIN32
int saved_win32_errno;
#endif
svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
pid = SvIVX(*svp);
SvREFCNT_dec(*svp);
*svp = &PL_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 WIN32
saved_win32_errno = GetLastError();
#endif
}
#ifdef UTS
if(PerlProc_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 {
pid2 = wait4pid(pid, &status, 0);
} while (pid2 == -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(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
}
#endif /* !DOSISH */
#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
I32
Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
{
SV *sv;
SV** svp;
char spid[TYPE_CHARS(int)];
if (!pid)
return -1;
if (pid > 0) {
sprintf(spid, "%"IVdf, (IV)pid);
svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
if (svp && *svp != &PL_sv_undef) {
*statusp = SvIVX(*svp);
(void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
return pid;
}
}
else {
HE *entry;
hv_iterinit(PL_pidstatus);
if ((entry = hv_iternext(PL_pidstatus))) {
pid = atoi(hv_iterkey(entry,(I32*)statusp));
sv = hv_iterval(PL_pidstatus,entry);
*statusp = SvIVX(sv);
sprintf(spid, "%"IVdf, (IV)pid);
(void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
return pid;
}
}
#ifdef HAS_WAITPID
# ifdef HAS_WAITPID_RUNTIME
if (!HAS_WAITPID_RUNTIME)
goto hard_way;
# endif
return PerlProc_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)
Perl_croak(aTHX_ "Can't do waitpid with flags");
else {
while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
pidgone(result,*statusp);
if (result < 0)
*statusp = -1;
}
return result;
}
#endif
}
#endif /* !DOSISH || OS2 || WIN32 */
void
/*SUPPRESS 590*/
Perl_pidgone(pTHX_ Pid_t pid, int status)
{
register SV *sv;
char spid[TYPE_CHARS(int)];
sprintf(spid, "%"IVdf, (IV)pid);
sv = *hv_fetch(PL_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(PerlIO *ptr)
#else
I32
Perl_my_pclose(pTHX_ PerlIO *ptr)
#endif
{
/* Needs work for PerlIO ! */
FILE *f = PerlIO_findFILE(ptr);
I32 result = pclose(f);
#if defined(DJGPP)
result = (result << 8) & 0xff00;
#endif
PerlIO_releaseFILE(ptr,f);
return result;
}
#endif
void
Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
{
register I32 todo;
register const char *frombase = from;
if (len == 1) {
register const char c = *from;
while (count-- > 0)
*to++ = c;
return;
}
while (count-- > 0) {
for (todo = len; todo > 0; todo--) {
*to++ = *from++;
}
from = frombase;
}
}
U32
Perl_cast_ulong(pTHX_ NV 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
/* 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
Perl_cast_i32(pTHX_ NV f)
{
if (f >= I32_MAX)
return (I32) I32_MAX;
if (f <= I32_MIN)
return (I32) I32_MIN;
return (I32) f;
}
IV
Perl_cast_iv(pTHX_ NV f)
{
if (f >= IV_MAX) {
UV uv;
if (f >= (NV)UV_MAX)
return (IV) UV_MAX;
uv = (UV) f;
return (IV)uv;
}
if (f <= IV_MIN)
return (IV) IV_MIN;
return (IV) f;
}
UV
Perl_cast_uv(pTHX_ NV f)
{
if (f >= MY_UV_MAX)
return (UV) MY_UV_MAX;
if (f < 0) {
IV iv;
if (f < IV_MIN)
return (UV)IV_MIN;
iv = (IV) f;
return (UV) iv;
}
return (UV) f;
}
#ifndef HAS_RENAME
I32
Perl_same_dirent(pTHX_ 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 (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
return FALSE;
if (fb == b)
sv_setpv(tmpsv, ".");
else
sv_setpvn(tmpsv, b, fb - b);
if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
return FALSE;
return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
}
#endif /* !HAS_RENAME */
NV
Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
{
register char *s = start;
register NV rnv = 0.0;
register UV ruv = 0;
register bool seenb = FALSE;
register bool overflowed = FALSE;
for (; len-- && *s; s++) {
if (!(*s == '0' || *s == '1')) {
if (*s == '_')
continue; /* Note: does not check for __ and the like. */
if (seenb == FALSE && *s == 'b' && ruv == 0) {
/* Disallow 0bbb0b0bbb... */
seenb = TRUE;
continue;
}
else {
dTHR;
if (ckWARN(WARN_DIGIT))
Perl_warner(aTHX_ WARN_DIGIT,
"Illegal binary digit '%c' ignored", *s);
break;
}
}
if (!overflowed) {
register UV xuv = ruv << 1;
if ((xuv >> 1) != ruv) {
dTHR;
overflowed = TRUE;
rnv = (NV) ruv;
if (ckWARN_d(WARN_OVERFLOW))
Perl_warner(aTHX_ WARN_OVERFLOW,
"Integer overflow in binary number");
} else
ruv = xuv | (*s - '0');
}
if (overflowed) {
rnv *= 2;
/* If an NV has not enough bits in its mantissa to
* represent an UV this summing of small low-order numbers
* is a waste of time (because the NV cannot preserve
* the low-order bits anyway): we could just remember when
* did we overflow and in the end just multiply rnv by the
* right amount. */
rnv += (*s - '0');
}
}
if (!overflowed)
rnv = (NV) ruv;
if ( ( overflowed && rnv > 4294967295.0)
#if UVSIZE > 4
|| (!overflowed && ruv > 0xffffffff )
#endif
) {
dTHR;
if (ckWARN(WARN_PORTABLE))
Perl_warner(aTHX_ WARN_PORTABLE,
"Binary number > 0b11111111111111111111111111111111 non-portable");
}
*retlen = s - start;
return rnv;
}
NV
Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
{
register char *s = start;
register NV rnv = 0.0;
register UV ruv = 0;
register bool overflowed = FALSE;
for (; len-- && *s; s++) {
if (!(*s >= '0' && *s <= '7')) {
if (*s == '_')
continue; /* Note: does not check for __ and the like. */
else {
/* Allow \octal to work the DWIM way (that is, stop scanning
* as soon as non-octal characters are seen, complain only iff
* someone seems to want to use the digits eight and nine). */
if (*s == '8' || *s == '9') {
dTHR;
if (ckWARN(WARN_DIGIT))
Perl_warner(aTHX_ WARN_DIGIT,
"Illegal octal digit '%c' ignored", *s);
}
break;
}
}
if (!overflowed) {
register UV xuv = ruv << 3;
if ((xuv >> 3) != ruv) {
dTHR;
overflowed = TRUE;
rnv = (NV) ruv;
if (ckWARN_d(WARN_OVERFLOW))
Perl_warner(aTHX_ WARN_OVERFLOW,
"Integer overflow in octal number");
} else
ruv = xuv | (*s - '0');
}
if (overflowed) {
rnv *= 8.0;
/* If an NV has not enough bits in its mantissa to
* represent an UV this summing of small low-order numbers
* is a waste of time (because the NV cannot preserve
* the low-order bits anyway): we could just remember when
* did we overflow and in the end just multiply rnv by the
* right amount of 8-tuples. */
rnv += (NV)(*s - '0');
}
}
if (!overflowed)
rnv = (NV) ruv;
if ( ( overflowed && rnv > 4294967295.0)
#if UVSIZE > 4
|| (!overflowed && ruv > 0xffffffff )
#endif
) {
dTHR;
if (ckWARN(WARN_PORTABLE))
Perl_warner(aTHX_ WARN_PORTABLE,
"Octal number > 037777777777 non-portable");
}
*retlen = s - start;
return rnv;
}
NV
Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
{
register char *s = start;
register NV rnv = 0.0;
register UV ruv = 0;
register bool seenx = FALSE;
register bool overflowed = FALSE;
char *hexdigit;
for (; len-- && *s; s++) {
hexdigit = strchr((char *) PL_hexdigit, *s);
if (!hexdigit) {
if (*s == '_')
continue; /* Note: does not check for __ and the like. */
if (seenx == FALSE && *s == 'x' && ruv == 0) {
/* Disallow 0xxx0x0xxx... */
seenx = TRUE;
continue;
}
else {
dTHR;
if (ckWARN(WARN_DIGIT))
Perl_warner(aTHX_ WARN_DIGIT,
"Illegal hexadecimal digit '%c' ignored", *s);
break;
}
}
if (!overflowed) {
register UV xuv = ruv << 4;
if ((xuv >> 4) != ruv) {
dTHR;
overflowed = TRUE;
rnv = (NV) ruv;
if (ckWARN_d(WARN_OVERFLOW))
Perl_warner(aTHX_ WARN_OVERFLOW,
"Integer overflow in hexadecimal number");
} else
ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
}
if (overflowed) {
rnv *= 16.0;
/* If an NV has not enough bits in its mantissa to
* represent an UV this summing of small low-order numbers
* is a waste of time (because the NV cannot preserve
* the low-order bits anyway): we could just remember when
* did we overflow and in the end just multiply rnv by the
* right amount of 16-tuples. */
rnv += (NV)((hexdigit - PL_hexdigit) & 15);
}
}
if (!overflowed)
rnv = (NV) ruv;
if ( ( overflowed && rnv > 4294967295.0)
#if UVSIZE > 4
|| (!overflowed && ruv > 0xffffffff )
#endif
) {
dTHR;
if (ckWARN(WARN_PORTABLE))
Perl_warner(aTHX_ WARN_PORTABLE,
"Hexadecimal number > 0xffffffff non-portable");
}
*retlen = s - start;
return rnv;
}
char*
Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
{
dTHR;
char *xfound = Nullch;
char *xfailed = Nullch;
char tmpbuf[MAXPATHLEN];
register char *s;
I32 len;
int retval;
#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
# define SEARCH_EXTS ".bat", ".cmd", NULL
# define MAX_EXT_LEN 4
#endif
#ifdef OS2
# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
# define MAX_EXT_LEN 4
#endif
#ifdef VMS
# define SEARCH_EXTS ".pl", ".com", NULL
# define MAX_EXT_LEN 4
#endif
/* additional extensions to try in each dir if scriptname not found */
#ifdef SEARCH_EXTS
char *exts[] = { SEARCH_EXTS };
char **ext = search_ext ? search_ext : exts;
int extidx = 0, i = 0;
char *curext = Nullch;
#else
# define MAX_EXT_LEN 0
#endif
/*
* If dosearch is true and if scriptname does not contain path
* delimiters, search the PATH for scriptname.
*
* If SEARCH_EXTS is also defined, will look for each
* scriptname{SEARCH_EXTS} whenever scriptname is not found
* while searching the PATH.
*
* Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
* proceeds as follows:
* If DOSISH or VMSISH:
* + look for ./scriptname{,.foo,.bar}
* + search the PATH for scriptname{,.foo,.bar}
*
* If !DOSISH:
* + look *only* in the PATH for scriptname{,.foo,.bar} (note
* this will not look in '.' if it's not in the PATH)
*/
tmpbuf[0] = '\0';
#ifdef VMS
# ifdef ALWAYS_DEFTYPES
len = strlen(scriptname);
if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
int hasdir, idx = 0, deftypes = 1;
bool seen_dot = 1;
hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
# else
if (dosearch) {
int hasdir, idx = 0, deftypes = 1;
bool seen_dot = 1;
hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
# endif
/* The first time through, just add SEARCH_EXTS to whatever we
* already have, so we can check for default file types. */
while (deftypes ||
(!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
{
if (deftypes) {
deftypes = 0;
*tmpbuf = '\0';
}
if ((strlen(tmpbuf) + strlen(scriptname)
+ MAX_EXT_LEN) >= sizeof tmpbuf)
continue; /* don't search dir with too-long name */
strcat(tmpbuf, scriptname);
#else /* !VMS */
#ifdef DOSISH
if (strEQ(scriptname, "-"))
dosearch = 0;
if (dosearch) { /* Look in '.' first. */
char *cur = scriptname;
#ifdef SEARCH_EXTS
if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
while (ext[i])
if (strEQ(ext[i++],curext)) {
extidx = -1; /* already has an ext */
break;
}
do {
#endif
DEBUG_p(PerlIO_printf(Perl_debug_log,
"Looking for %s\n",cur));
if (PerlLIO_stat(cur,&PL_statbuf) >= 0
&& !S_ISDIR(PL_statbuf.st_mode)) {
dosearch = 0;
scriptname = cur;
#ifdef SEARCH_EXTS
break;
#endif
}
#ifdef SEARCH_EXTS
if (cur == scriptname) {
len = strlen(scriptname);
if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
break;
cur = strcpy(tmpbuf, scriptname);
}
} while (extidx >= 0 && ext[extidx] /* try an extension? */
&& strcpy(tmpbuf+len, ext[extidx++]));
#endif
}
#endif
#ifdef MACOS_TRADITIONAL
if (dosearch && !strchr(scriptname, ':') &&
(s = PerlEnv_getenv("Commands")))
#else
if (dosearch && !strchr(scriptname, '/')
#ifdef DOSISH
&& !strchr(scriptname, '\\')
#endif
&& (s = PerlEnv_getenv("PATH")))
#endif
{
bool seen_dot = 0;
PL_bufend = s + strlen(s);
while (s < PL_bufend) {
#ifdef MACOS_TRADITIONAL
s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
',',
&len);
#else
#if defined(atarist) || defined(DOSISH)
for (len = 0; *s
# ifdef atarist
&& *s != ','
# endif
&& *s != ';'; len++, s++) {
if (len < sizeof tmpbuf)
tmpbuf[len] = *s;
}
if (len < sizeof tmpbuf)
tmpbuf[len] = '\0';
#else /* ! (atarist || DOSISH) */
s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
':',
&len);
#endif /* ! (atarist || DOSISH) */
#endif /* MACOS_TRADITIONAL */
if (s < PL_bufend)
s++;
if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
continue; /* don't search dir with too-long name */
#ifdef MACOS_TRADITIONAL
if (len && tmpbuf[len - 1] != ':')
tmpbuf[len++] = ':';
#else
if (len
#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
&& tmpbuf[len - 1] != '/'
&& tmpbuf[len - 1] != '\\'
#endif
)
tmpbuf[len++] = '/';
if (len == 2 && tmpbuf[0] == '.')
seen_dot = 1;
#endif
(void)strcpy(tmpbuf + len, scriptname);
#endif /* !VMS */
#ifdef SEARCH_EXTS
len = strlen(tmpbuf);
if (extidx > 0) /* reset after previous loop */
extidx = 0;
do {
#endif
DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
if (S_ISDIR(PL_statbuf.st_mode)) {
retval = -1;
}
#ifdef SEARCH_EXTS
} while ( retval < 0 /* not there */
&& extidx>=0 && ext[extidx] /* try an extension? */
&& strcpy(tmpbuf+len, ext[extidx++])
);
#endif
if (retval < 0)
continue;
if (S_ISREG(PL_statbuf.st_mode)
&& cando(S_IRUSR,TRUE,&PL_statbuf)
#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
&& cando(S_IXUSR,TRUE,&PL_statbuf)
#endif
)
{
xfound = tmpbuf; /* bingo! */
break;
}
if (!xfailed)
xfailed = savepv(tmpbuf);
}
#ifndef DOSISH
if (!xfound && !seen_dot && !xfailed &&
(PerlLIO_stat(scriptname,&PL_statbuf) < 0
|| S_ISDIR(PL_statbuf.st_mode)))
#endif
seen_dot = 1; /* Disable message. */
if (!xfound) {
if (flags & 1) { /* do or die? */
Perl_croak(aTHX_ "Can't %s %s%s%s",
(xfailed ? "execute" : "find"),
(xfailed ? xfailed : scriptname),
(xfailed ? "" : " on PATH"),
(xfailed || seen_dot) ? "" : ", '.' not in PATH");
}
scriptname = Nullch;
}
if (xfailed)
Safefree(xfailed);
scriptname = xfound;
}
return (scriptname ? savepv(scriptname) : Nullch);
}
#ifndef PERL_GET_CONTEXT_DEFINED
void *
Perl_get_context(void)
{
#if defined(USE_THREADS) || defined(USE_ITHREADS)
# ifdef OLD_PTHREADS_API
pthread_addr_t t;
if (pthread_getspecific(PL_thr_key, &t))
Perl_croak_nocontext("panic: pthread_getspecific");
return (void*)t;
# else
# ifdef I_MACH_CTHREADS
return (void*)cthread_data(cthread_self());
# else
return (void*)pthread_getspecific(PL_thr_key);
# endif
# endif
#else
return (void*)NULL;
#endif
}
void
Perl_set_context(void *t)
{
#if defined(USE_THREADS) || defined(USE_ITHREADS)
# ifdef I_MACH_CTHREADS
cthread_set_data(cthread_self(), t);
# else
if (pthread_setspecific(PL_thr_key, t))
Perl_croak_nocontext("panic: pthread_setspecific");
# endif
#endif
}
#endif /* !PERL_GET_CONTEXT_DEFINED */
#ifdef USE_THREADS
#ifdef FAKE_THREADS
/* Very simplistic scheduler for now */
void
schedule(void)
{
thr = thr->i.next_run;
}
void
Perl_cond_init(pTHX_ perl_cond *cp)
{
*cp = 0;
}
void
Perl_cond_signal(pTHX_ perl_cond *cp)
{
perl_os_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(pTHX_ perl_cond *cp)
{
perl_os_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(pTHX_ perl_cond *cp)
{
perl_cond cond;
if (thr->i.next_run == thr)
Perl_croak(aTHX_ "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 */
MAGIC *
Perl_condpair_magic(pTHX_ 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;
LOCK_CRED_MUTEX; /* XXX need separate mutex? */
mg = mg_find(sv, 'm');
if (mg) {
/* someone else beat us to initialising it */
UNLOCK_CRED_MUTEX; /* XXX need separate 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);
UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
"%p: condpair_magic %p\n", thr, sv));)
}
}
return mg;
}
/*
* Make a new perl thread structure using t as a prototype. Some of the
* fields for the new thread are copied from the prototype thread, t,
* so t should not be running in perl at the time this function is
* called. The use by ext/Thread/Thread.xs in core perl (where t is the
* thread calling new_struct_thread) clearly satisfies this constraint.
*/
struct perl_thread *
Perl_new_struct_thread(pTHX_ struct perl_thread *t)
{
#if !defined(PERL_IMPLICIT_CONTEXT)
struct perl_thread *thr;
#endif
SV *sv;
SV **svp;
I32 i;
sv = newSVpvn("", 0);
SvGROW(sv, sizeof(struct perl_thread) + 1);
SvCUR_set(sv, sizeof(struct perl_thread));
thr = (Thread) SvPVX(sv);
#ifdef DEBUGGING
memset(thr, 0xab, sizeof(struct perl_thread));
PL_markstack = 0;
PL_scopestack = 0;
PL_savestack = 0;
PL_retstack = 0;
PL_dirty = 0;
PL_localizing = 0;
Zero(&PL_hv_fetch_ent_mh, 1, HE);
#else
Zero(thr, 1, struct perl_thread);
#endif
thr->oursv = sv;
init_stacks();
PL_curcop = &PL_compiling;
thr->interp = t->interp;
thr->cvcache = newHV();
thr->threadsv = newAV();
thr->specific = newAV();
thr->errsv = newSVpvn("", 0);
thr->flags = THRf_R_JOINABLE;
MUTEX_INIT(&thr->mutex);
JMPENV_BOOTSTRAP;
PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
PL_restartop = 0;
PL_statname = NEWSV(66,0);
PL_errors = newSVpvn("", 0);
PL_maxscream = -1;
PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
PL_regindent = 0;
PL_reginterp_cnt = 0;
PL_lastscream = Nullsv;
PL_screamfirst = 0;
PL_screamnext = 0;
PL_reg_start_tmp = 0;
PL_reg_start_tmpl = 0;
PL_reg_poscache = Nullch;
/* parent thread's data needs to be locked while we make copy */
MUTEX_LOCK(&t->mutex);
#ifdef PERL_FLEXIBLE_EXCEPTIONS
PL_protect = t->Tprotect;
#endif
PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
PL_defstash = t->Tdefstash; /* XXX maybe these should */
PL_curstash = t->Tcurstash; /* always be set to main? */
PL_tainted = t->Ttainted;
PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
PL_nrs = newSVsv(t->Tnrs);
PL_rs = SvREFCNT_inc(PL_nrs);
PL_last_in_gv = Nullgv;
PL_ofslen = t->Tofslen;
PL_ofs = savepvn(t->Tofs, PL_ofslen);
PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
PL_chopset = t->Tchopset;
PL_bodytarget = newSVsv(t->Tbodytarget);
PL_toptarget = newSVsv(t->Ttoptarget);
if (t->Tformtarget == t->Ttoptarget)
PL_formtarget = PL_toptarget;
else
PL_formtarget = PL_bodytarget;
/* Initialise all per-thread SVs that the template thread used */
svp = AvARRAY(t->threadsv);
for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
if (*svp && *svp != &PL_sv_undef) {
SV *sv = newSVsv(*svp);
av_store(thr->threadsv, i, sv);
sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
DEBUG_S(PerlIO_printf(Perl_debug_log,
"new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
(IV)i, t, thr));
}
}
thr->threadsvp = AvARRAY(thr->threadsv);
MUTEX_LOCK(&PL_threads_mutex);
PL_nthreads++;
thr->tid = ++PL_threadnum;
thr->next = t->next;
thr->prev = t;
t->next = thr;
thr->next->prev = thr;
MUTEX_UNLOCK(&PL_threads_mutex);
/* done copying parent's state */
MUTEX_UNLOCK(&t->mutex);
#ifdef HAVE_THREAD_INTERN
Perl_init_thread_intern(thr);
#endif /* HAVE_THREAD_INTERN */
return thr;
}
#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.
*/
NV
Perl_huge(void)
{
return HUGE_VAL;
}
#endif
#ifdef PERL_GLOBAL_STRUCT
struct perl_vars *
Perl_GetVars(pTHX)
{
return &PL_Vars;
}
#endif
char **
Perl_get_op_names(pTHX)
{
return PL_op_name;
}
char **
Perl_get_op_descs(pTHX)
{
return PL_op_desc;
}
char *
Perl_get_no_modify(pTHX)
{
return (char*)PL_no_modify;
}
U32 *
Perl_get_opargs(pTHX)
{
return PL_opargs;
}
PPADDR_t*
Perl_get_ppaddr(pTHX)
{
return &PL_ppaddr;
}
#ifndef HAS_GETENV_LEN
char *
Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
{
char *env_trans = PerlEnv_getenv(env_elem);
if (env_trans)
*len = strlen(env_trans);
return env_trans;
}
#endif
MGVTBL*
Perl_get_vtbl(pTHX_ int vtbl_id)
{
MGVTBL* result = Null(MGVTBL*);
switch(vtbl_id) {
case want_vtbl_sv:
result = &PL_vtbl_sv;
break;
case want_vtbl_env:
result = &PL_vtbl_env;
break;
case want_vtbl_envelem:
result = &PL_vtbl_envelem;
break;
case want_vtbl_sig:
result = &PL_vtbl_sig;
break;
case want_vtbl_sigelem:
result = &PL_vtbl_sigelem;
break;
case want_vtbl_pack:
result = &PL_vtbl_pack;
break;
case want_vtbl_packelem:
result = &PL_vtbl_packelem;
break;
case want_vtbl_dbline:
result = &PL_vtbl_dbline;
break;
case want_vtbl_isa:
result = &PL_vtbl_isa;
break;
case want_vtbl_isaelem:
result = &PL_vtbl_isaelem;
break;
case want_vtbl_arylen:
result = &PL_vtbl_arylen;
break;
case want_vtbl_glob:
result = &PL_vtbl_glob;
break;
case want_vtbl_mglob:
result = &PL_vtbl_mglob;
break;
case want_vtbl_nkeys:
result = &PL_vtbl_nkeys;
break;
case want_vtbl_taint:
result = &PL_vtbl_taint;
break;
case want_vtbl_substr:
result = &PL_vtbl_substr;
break;
case want_vtbl_vec:
result = &PL_vtbl_vec;
break;
case want_vtbl_pos:
result = &PL_vtbl_pos;
break;
case want_vtbl_bm:
result = &PL_vtbl_bm;
break;
case want_vtbl_fm:
result = &PL_vtbl_fm;
break;
case want_vtbl_uvar:
result = &PL_vtbl_uvar;
break;
#ifdef USE_THREADS
case want_vtbl_mutex:
result = &PL_vtbl_mutex;
break;
#endif
case want_vtbl_defelem:
result = &PL_vtbl_defelem;
break;
case want_vtbl_regexp:
result = &PL_vtbl_regexp;
break;
case want_vtbl_regdata:
result = &PL_vtbl_regdata;
break;
case want_vtbl_regdatum:
result = &PL_vtbl_regdatum;
break;
#ifdef USE_LOCALE_COLLATE
case want_vtbl_collxfrm:
result = &PL_vtbl_collxfrm;
break;
#endif
case want_vtbl_amagic:
result = &PL_vtbl_amagic;
break;
case want_vtbl_amagicelem:
result = &PL_vtbl_amagicelem;
break;
case want_vtbl_backref:
result = &PL_vtbl_backref;
break;
}
return result;
}
I32
Perl_my_fflush_all(pTHX)
{
#ifdef FFLUSH_NULL
return PerlIO_flush(NULL);
#else
long open_max = -1;
# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
# else
# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
open_max = sysconf(_SC_OPEN_MAX);
# else
# ifdef FOPEN_MAX
open_max = FOPEN_MAX;
# else
# ifdef OPEN_MAX
open_max = OPEN_MAX;
# else
# ifdef _NFILE
open_max = _NFILE;
# endif
# endif
# endif
# endif
# endif
if (open_max > 0) {
long i;
for (i = 0; i < open_max; i++)
if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
STDIO_STREAM_ARRAY[i]._file < open_max &&
STDIO_STREAM_ARRAY[i]._flag)
PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
return 0;
}
# endif
SETERRNO(EBADF,RMS$_IFI);
return EOF;
#endif
}
NV
Perl_my_atof(pTHX_ const char* s)
{
#ifdef USE_LOCALE_NUMERIC
if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
NV x, y;
x = Perl_atof(s);
SET_NUMERIC_STANDARD();
y = Perl_atof(s);
SET_NUMERIC_LOCAL();
if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
return y;
return x;
}
else
return Perl_atof(s);
#else
return Perl_atof(s);
#endif
}
void
Perl_report_closed_fh(pTHX_ GV *gv, IO *io, const char *func, const char *obj)
{
SV *sv;
char *name;
assert(gv);
sv = sv_newmortal();
gv_efullname3(sv, gv, Nullch);
name = SvPVX(sv);
Perl_warner(aTHX_ WARN_CLOSED, "%s() on closed %s %s", func, obj, name);
if (io && IoDIRP(io))
Perl_warner(aTHX_ WARN_CLOSED,
"\t(Are you trying to call %s() on dirhandle %s?)\n",
func, name);
}
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