/* util.c
*
* Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
ptr = (Malloc_t)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) {
+ if (ptr != NULL) {
#ifdef PERL_TRACK_MEMPOOL
- ((struct perl_memory_debug_header *)ptr)->interpreter = aTHX;
+ struct perl_memory_debug_header *const header
+ = (struct perl_memory_debug_header *)ptr;
+#endif
+
+#ifdef PERL_POISON
+ PoisonNew(((char *)ptr), size, char);
+#endif
+
+#ifdef PERL_TRACK_MEMPOOL
+ header->interpreter = aTHX;
+ /* Link us into the list. */
+ header->prev = &PL_memory_debug_header;
+ header->next = PL_memory_debug_header.next;
+ PL_memory_debug_header.next = header;
+ header->next->prev = header;
# ifdef PERL_POISON
- ((struct perl_memory_debug_header *)ptr)->size = size;
- ((struct perl_memory_debug_header *)ptr)->in_use = PERL_POISON_INUSE;
+ header->size = size;
# endif
ptr = (Malloc_t)((char*)ptr+sTHX);
#endif
return ptr;
}
else if (PL_nomemok)
- return Nullch;
+ return NULL;
else {
return write_no_mem();
}
#ifdef PERL_TRACK_MEMPOOL
where = (Malloc_t)((char*)where-sTHX);
size += sTHX;
- if (((struct perl_memory_debug_header *)where)->interpreter != aTHX) {
- Perl_croak_nocontext("panic: realloc from wrong pool");
- }
+ {
+ struct perl_memory_debug_header *const header
+ = (struct perl_memory_debug_header *)where;
+
+ if (header->interpreter != aTHX) {
+ Perl_croak_nocontext("panic: realloc from wrong pool");
+ }
+ assert(header->next->prev == header);
+ assert(header->prev->next == header);
# ifdef PERL_POISON
- if (((struct perl_memory_debug_header *)where)->size > size) {
- const MEM_SIZE freed_up =
- ((struct perl_memory_debug_header *)where)->size - size;
- char *start_of_freed = ((char *)where) + size;
- Poison(start_of_freed, freed_up, char);
- }
- ((struct perl_memory_debug_header *)where)->size = size;
+ if (header->size > size) {
+ const MEM_SIZE freed_up = header->size - size;
+ char *start_of_freed = ((char *)where) + size;
+ PoisonFree(start_of_freed, freed_up, char);
+ }
+ header->size = size;
# endif
+ }
#endif
#ifdef DEBUGGING
if ((long)size < 0)
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) {
+ if (ptr != NULL) {
#ifdef PERL_TRACK_MEMPOOL
+ struct perl_memory_debug_header *const header
+ = (struct perl_memory_debug_header *)ptr;
+
+# ifdef PERL_POISON
+ if (header->size < size) {
+ const MEM_SIZE fresh = size - header->size;
+ char *start_of_fresh = ((char *)ptr) + size;
+ PoisonNew(start_of_fresh, fresh, char);
+ }
+# endif
+
+ header->next->prev = header;
+ header->prev->next = header;
+
ptr = (Malloc_t)((char*)ptr+sTHX);
#endif
return ptr;
}
else if (PL_nomemok)
- return Nullch;
+ return NULL;
else {
return write_no_mem();
}
if (where) {
#ifdef PERL_TRACK_MEMPOOL
where = (Malloc_t)((char*)where-sTHX);
- if (((struct perl_memory_debug_header *)where)->interpreter != aTHX) {
- Perl_croak_nocontext("panic: free from wrong pool");
- }
-# ifdef PERL_POISON
{
- if (((struct perl_memory_debug_header *)where)->in_use
- == PERL_POISON_FREE) {
+ struct perl_memory_debug_header *const header
+ = (struct perl_memory_debug_header *)where;
+
+ if (header->interpreter != aTHX) {
+ Perl_croak_nocontext("panic: free from wrong pool");
+ }
+ if (!header->prev) {
Perl_croak_nocontext("panic: duplicate free");
}
- if (((struct perl_memory_debug_header *)where)->in_use
- != PERL_POISON_INUSE) {
- Perl_croak_nocontext("panic: bad free ");
+ if (!(header->next) || header->next->prev != header
+ || header->prev->next != header) {
+ Perl_croak_nocontext("panic: bad free");
}
- ((struct perl_memory_debug_header *)where)->in_use
- = PERL_POISON_FREE;
- }
- Poison(where, ((struct perl_memory_debug_header *)where)->size, char);
+ /* Unlink us from the chain. */
+ header->next->prev = header->prev;
+ header->prev->next = header->next;
+# ifdef PERL_POISON
+ PoisonNew(where, header->size, char);
# endif
+ /* Trigger the duplicate free warning. */
+ header->next = NULL;
+ }
#endif
PerlMem_free(where);
}
ptr = (Malloc_t)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) {
+ if (ptr != NULL) {
memset((void*)ptr, 0, size);
#ifdef PERL_TRACK_MEMPOOL
- ((struct perl_memory_debug_header *)ptr)->interpreter = aTHX;
+ {
+ struct perl_memory_debug_header *const header
+ = (struct perl_memory_debug_header *)ptr;
+
+ header->interpreter = aTHX;
+ /* Link us into the list. */
+ header->prev = &PL_memory_debug_header;
+ header->next = PL_memory_debug_header.next;
+ PL_memory_debug_header.next = header;
+ header->next->prev = header;
# ifdef PERL_POISON
- ((struct perl_memory_debug_header *)ptr)->size = size;
- ((struct perl_memory_debug_header *)ptr)->in_use = PERL_POISON_INUSE;
+ header->size = size;
# endif
- ptr = (Malloc_t)((char*)ptr+sTHX);
+ ptr = (Malloc_t)((char*)ptr+sTHX);
+ }
#endif
return ptr;
}
else if (PL_nomemok)
- return Nullch;
+ return NULL;
return write_no_mem();
}
Perl_delimcpy(pTHX_ register char *to, register const char *toend, register const char *from, register const char *fromend, register int delim, I32 *retlen)
{
register I32 tolen;
+ PERL_UNUSED_CONTEXT;
+
for (tolen = 0; from < fromend; from++, tolen++) {
if (*from == '\\') {
- if (from[1] == delim)
- from++;
- else {
+ if (from[1] != delim) {
if (to < toend)
*to++ = *from;
tolen++;
- from++;
}
+ from++;
}
else if (*from == delim)
break;
Perl_instr(pTHX_ register const char *big, register const char *little)
{
register I32 first;
+ PERL_UNUSED_CONTEXT;
if (!little)
return (char*)big;
continue;
for (x=big,s=little; *s; /**/ ) {
if (!*x)
- return Nullch;
+ return NULL;
if (*s != *x)
break;
else {
if (!*s)
return (char*)(big-1);
}
- return Nullch;
+ return NULL;
}
/* same as instr but allow embedded nulls */
char *
Perl_ninstr(pTHX_ const char *big, const char *bigend, const char *little, const char *lend)
{
+ PERL_UNUSED_CONTEXT;
if (little >= lend)
return (char*)big;
{
return (char*)(big-1);
}
}
- return Nullch;
+ return NULL;
}
/* reverse of the above--find last substring */
register const char *bigbeg;
register const I32 first = *little;
register const char * const littleend = lend;
+ PERL_UNUSED_CONTEXT;
if (little >= littleend)
return (char*)bigend;
if (s >= littleend)
return (char*)(big+1);
}
- return Nullch;
+ return NULL;
}
-#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().
register const U8 *s;
register U32 i;
STRLEN len;
- I32 rarest = 0;
+ U32 rarest = 0;
U32 frequency = 256;
if (flags & FBMcf_TAIL) {
mg->mg_len++;
}
s = (U8*)SvPV_force_mutable(sv, len);
- SvUPGRADE(sv, SVt_PVBM);
if (len == 0) /* TAIL might be on a zero-length string. */
return;
+ SvUPGRADE(sv, SVt_PVGV);
+ SvIOK_off(sv);
+ SvNOK_off(sv);
+ SvVALID_on(sv);
if (len > 2) {
const unsigned char *sb;
const U8 mlen = (len>255) ? 255 : (U8)len;
register U8 *table;
- Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
- table = (unsigned char*)(SvPVX_mutable(sv) + len + FBM_TABLE_OFFSET);
- s = table - 1 - FBM_TABLE_OFFSET; /* last char */
+ Sv_Grow(sv, len + 256 + PERL_FBM_TABLE_OFFSET);
+ table
+ = (unsigned char*)(SvPVX_mutable(sv) + len + PERL_FBM_TABLE_OFFSET);
+ s = table - 1 - PERL_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) {
table[*s] = (U8)i;
s--, i++;
}
+ } else {
+ Sv_Grow(sv, len + PERL_FBM_TABLE_OFFSET);
}
- sv_magic(sv, Nullsv, PERL_MAGIC_bm, Nullch, 0); /* deep magic */
- SvVALID_on(sv);
+ sv_magic(sv, NULL, PERL_MAGIC_bm, NULL, 0); /* deep magic */
s = (const unsigned char*)(SvPVX_const(sv)); /* deeper magic */
for (i = 0; i < len; i++) {
frequency = PL_freq[s[i]];
}
}
+ BmFLAGS(sv) = (U8)flags;
BmRARE(sv) = s[rarest];
- BmPREVIOUS(sv) = (U16)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)));
+ DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %lu\n",
+ BmRARE(sv),(unsigned long)BmPREVIOUS(sv)));
}
/* If SvTAIL(littlestr), it has a fake '\n' at end. */
=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>
+C<strend>. It returns C<NULL> 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.
|| (*big == *little &&
memEQ((char *)big, (char *)little, littlelen - 1))))
return (char*)big;
- return Nullch;
+ return NULL;
}
if (littlelen <= 2) { /* Special-cased */
}
if (SvTAIL(littlestr))
return (char *) bigend;
- return Nullch;
+ return NULL;
}
if (!littlelen)
return (char*)big; /* Cannot be SvTAIL! */
return (char*)bigend - 2;
if (bigend[-1] == *little)
return (char*)bigend - 1;
- return Nullch;
+ return NULL;
}
{
/* This should be better than FBM if c1 == c2, and almost
check_1char_anchor: /* One char and anchor! */
if (SvTAIL(littlestr) && (*bigend == *little))
return (char *)bigend; /* bigend is already decremented. */
- return Nullch;
+ return NULL;
}
if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
s = bigend - littlelen;
{
return (char*)s + 1; /* how sweet it is */
}
- return Nullch;
+ return NULL;
}
- if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
+ if (!SvVALID(littlestr)) {
char * const b = ninstr((char*)big,(char*)bigend,
(char*)little, (char*)little + littlelen);
{
return (char*)s;
}
- return Nullch;
+ return NULL;
}
return b;
}
- { /* Do actual FBM. */
- register const unsigned char * const table = little + littlelen + FBM_TABLE_OFFSET;
+ /* Do actual FBM. */
+ if (littlelen > (STRLEN)(bigend - big))
+ return NULL;
+
+ {
+ register const unsigned char * const table
+ = little + littlelen + PERL_FBM_TABLE_OFFSET;
register const unsigned char *oldlittle;
- if (littlelen > (STRLEN)(bigend - big))
- return Nullch;
--littlelen; /* Last char found by table lookup */
s = big + littlelen;
}
}
check_end:
- if ( s == bigend && (table[-1] & FBMcf_TAIL)
+ if ( s == bigend
+ && (BmFLAGS(littlestr) & FBMcf_TAIL)
&& memEQ((char *)(bigend - littlelen),
(char *)(oldlittle - littlelen), littlelen) )
return (char*)bigend - littlelen;
- return Nullch;
+ return NULL;
}
}
register const unsigned char *littleend;
I32 found = 0;
+ assert(SvTYPE(littlestr) == SVt_PVGV);
+ assert(SvVALID(littlestr));
+
if (*old_posp == -1
? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
: (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
first = *little++;
goto check_tail;
}
- return Nullch;
+ return NULL;
}
little = (const unsigned char *)(SvPVX_const(littlestr));
if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
goto check_tail;
#endif
- return Nullch;
+ return NULL;
}
while (pos < previous + start_shift) {
if (!(pos += PL_screamnext[pos]))
return (char *)(big+(*old_posp));
check_tail:
if (!SvTAIL(littlestr) || (end_shift > 0))
- return Nullch;
+ return NULL;
/* Ignore the trailing "\n". This code is not microoptimized */
big = (const unsigned char *)(SvPVX_const(bigstr) + SvCUR(bigstr));
stop_pos = littleend - little; /* Actual littlestr len */
&& ((stop_pos == 1) ||
memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
return (char*)big;
- return Nullch;
+ return NULL;
}
I32
{
register const U8 *a = (const U8 *)s1;
register const U8 *b = (const U8 *)s2;
+ PERL_UNUSED_CONTEXT;
+
while (len--) {
if (*a != *b && *a != PL_fold[*b])
return 1;
dVAR;
register const U8 *a = (const U8 *)s1;
register const U8 *b = (const U8 *)s2;
+ PERL_UNUSED_CONTEXT;
+
while (len--) {
if (*a != *b && *a != PL_fold_locale[*b])
return 1;
char *
Perl_savepv(pTHX_ const char *pv)
{
+ PERL_UNUSED_CONTEXT;
if (!pv)
- return Nullch;
+ return NULL;
else {
char *newaddr;
const STRLEN pvlen = strlen(pv)+1;
- Newx(newaddr,pvlen,char);
- return memcpy(newaddr,pv,pvlen);
+ Newx(newaddr, pvlen, char);
+ return (char*)memcpy(newaddr, pv, pvlen);
}
-
}
/* same thing but with a known length */
Perl's version of what C<strndup()> would be if it existed. Returns a
pointer to a newly allocated string which is a duplicate of the first
-C<len> bytes from C<pv>. The memory allocated for the new string can be
-freed with the C<Safefree()> function.
+C<len> bytes from C<pv>, plus a trailing NUL byte. The memory allocated for
+the new string can be freed with the C<Safefree()> function.
=cut
*/
Perl_savepvn(pTHX_ const char *pv, register I32 len)
{
register char *newaddr;
+ PERL_UNUSED_CONTEXT;
Newx(newaddr,len+1,char);
/* Give a meaning to NULL pointer mainly for the use in sv_magic() */
register char *newaddr;
STRLEN pvlen;
if (!pv)
- return Nullch;
+ return NULL;
pvlen = strlen(pv)+1;
newaddr = (char*)PerlMemShared_malloc(pvlen);
if (!newaddr) {
return write_no_mem();
}
- return memcpy(newaddr,pv,pvlen);
+ return (char*)memcpy(newaddr, pv, pvlen);
+}
+
+/*
+=for apidoc savesharedpvn
+
+A version of C<savepvn()> which allocates the duplicate string in memory
+which is shared between threads. (With the specific difference that a NULL
+pointer is not acceptable)
+
+=cut
+*/
+char *
+Perl_savesharedpvn(pTHX_ const char *const pv, const STRLEN len)
+{
+ char *const newaddr = (char*)PerlMemShared_malloc(len + 1);
+ assert(pv);
+ if (!newaddr) {
+ return write_no_mem();
+ }
+ newaddr[len] = '\0';
+ return (char*)memcpy(newaddr, pv, len);
}
/*
Perl_vform(pTHX_ const char *pat, va_list *args)
{
SV * const sv = mess_alloc();
- sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
+ sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL);
return SvPVX(sv);
}
return retval;
}
-STATIC COP*
-S_closest_cop(pTHX_ COP *cop, const OP *o)
+STATIC const COP*
+S_closest_cop(pTHX_ const COP *cop, const OP *o)
{
dVAR;
/* Look for PL_op starting from o. cop is the last COP we've seen. */
return cop;
if (o->op_flags & OPf_KIDS) {
- OP *kid;
+ const OP *kid;
for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
- COP *new_cop;
+ const COP *new_cop;
/* If the OP_NEXTSTATE has been optimised away we can still use it
* the get the file and line number. */
if (kid->op_type == OP_NULL && kid->op_targ == OP_NEXTSTATE)
- cop = (COP *)kid;
+ cop = (const COP *)kid;
/* Keep searching, and return when we've found something. */
/* Nothing found. */
- return Null(COP *);
+ return NULL;
}
SV *
{
dVAR;
SV * const sv = mess_alloc();
- static const char dgd[] = " during global destruction.\n";
- sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
+ sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL);
if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
-
/*
* Try and find the file and line for PL_op. This will usually be
* PL_curcop, but it might be a cop that has been optimised away. We
*/
const COP *cop = closest_cop(PL_curcop, PL_curcop->op_sibling);
- if (!cop) cop = PL_curcop;
+ if (!cop)
+ cop = PL_curcop;
if (CopLINE(cop))
Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
OutCopFILE(cop), (IV)CopLINE(cop));
- if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
+ /* Seems that GvIO() can be untrustworthy during global destruction. */
+ if (GvIO(PL_last_in_gv) && (SvTYPE(GvIOp(PL_last_in_gv)) == SVt_PVIO)
+ && IoLINES(GvIOp(PL_last_in_gv)))
+ {
const bool line_mode = (RsSIMPLE(PL_rs) &&
SvCUR(PL_rs) == 1 && *SvPVX_const(PL_rs) == '\n');
Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
- PL_last_in_gv == PL_argvgv ?
- "" : GvNAME(PL_last_in_gv),
+ PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
line_mode ? "line" : "chunk",
(IV)IoLINES(GvIOp(PL_last_in_gv)));
}
- sv_catpv(sv, PL_dirty ? dgd : ".\n");
+ if (PL_dirty)
+ sv_catpvs(sv, " during global destruction");
+ sv_catpvs(sv, ".\n");
}
return sv;
}
save_re_context();
SAVESPTR(PL_stderrgv);
- PL_stderrgv = Nullgv;
+ PL_stderrgv = NULL;
PUSHSTACKi(PERLSI_MAGIC);
*utf8 = SvUTF8(msv);
}
else {
- message = Nullch;
+ message = NULL;
}
DEBUG_S(PerlIO_printf(Perl_debug_log,
"%p: die/croak: message = %s\ndiehook = %p\n",
- thr, message, PL_diehook));
+ (void*)thr, message, (void*)PL_diehook));
if (PL_diehook) {
S_vdie_common(aTHX_ message, *msglen, *utf8, FALSE);
}
DEBUG_S(PerlIO_printf(Perl_debug_log,
"%p: die: curstack = %p, mainstack = %p\n",
- thr, PL_curstack, PL_mainstack));
+ (void*)thr, (void*)PL_curstack, (void*)PL_mainstack));
message = vdie_croak_common(pat, args, &msglen, &utf8);
SvFLAGS(ERRSV) |= utf8;
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));
+ (void*)thr, (void*)PL_restartop, was_in_eval, (void*)PL_top_env));
if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
JMPENV_JUMP(3);
return PL_restartop;
sidestepping the normal C order of execution. See C<warn>.
If you want to throw an exception object, assign the object to
-C<$@> and then pass C<Nullch> to croak():
+C<$@> and then pass C<NULL> to croak():
errsv = get_sv("@", TRUE);
sv_setsv(errsv, exception_object);
- croak(Nullch);
+ croak(NULL);
=cut
*/
Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
{
dVAR;
- if (ckDEAD(err)) {
+ if (PL_warnhook == PERL_WARNHOOK_FATAL || ckDEAD(err)) {
SV * const msv = vmess(pat, args);
STRLEN msglen;
const char * const message = SvPV_const(msv, msglen);
;
}
+/* Set buffer=NULL to get a new one. */
+STRLEN *
+Perl_new_warnings_bitfield(pTHX_ STRLEN *buffer, const char *const bits,
+ STRLEN size) {
+ const MEM_SIZE len_wanted = sizeof(STRLEN) + size;
+ PERL_UNUSED_CONTEXT;
+ buffer = (STRLEN*)
+ (specialWARN(buffer) ?
+ PerlMemShared_malloc(len_wanted) :
+ PerlMemShared_realloc(buffer, len_wanted));
+ buffer[0] = size;
+ Copy(bits, (buffer + 1), size, char);
+ return buffer;
+}
/* since we've already done strlen() for both nam and val
* we can use that info to make things faster than
#ifndef PERL_USE_SAFE_PUTENV
if (!PL_use_safe_putenv) {
/* most putenv()s leak, so we manipulate environ directly */
- register I32 i=setenv_getix(nam); /* where does it go? */
+ register I32 i=setenv_getix(nam); /* where does it go? */
int nlen, vlen;
- if (environ == PL_origenviron) { /* need we copy environment? */
- I32 j;
- I32 max;
- char **tmpenv;
-
- for (max = i; environ[max]; max++) ;
- tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
- for (j=0; j<max; j++) { /* copy environment */
- const int len = strlen(environ[j]);
- tmpenv[j] = (char*)safesysmalloc((len+1)*sizeof(char));
- Copy(environ[j], tmpenv[j], len+1, char);
- }
- tmpenv[max] = Nullch;
- environ = tmpenv; /* tell exec where it is now */
+ if (environ == PL_origenviron) { /* need we copy environment? */
+ I32 j;
+ I32 max;
+ char **tmpenv;
+
+ max = i;
+ while (environ[max])
+ max++;
+ tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
+ for (j=0; j<max; j++) { /* copy environment */
+ const int len = strlen(environ[j]);
+ tmpenv[j] = (char*)safesysmalloc((len+1)*sizeof(char));
+ Copy(environ[j], tmpenv[j], len+1, char);
+ }
+ tmpenv[max] = NULL;
+ environ = tmpenv; /* tell exec where it is now */
}
if (!val) {
- safesysfree(environ[i]);
- while (environ[i]) {
- environ[i] = environ[i+1];
- i++;
+ safesysfree(environ[i]);
+ while (environ[i]) {
+ environ[i] = environ[i+1];
+ i++;
}
- return;
+ 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 */
+ if (!environ[i]) { /* does not exist yet */
+ environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
+ environ[i+1] = NULL; /* make sure it's null terminated */
}
else
- safesysfree(environ[i]);
- nlen = strlen(nam);
- vlen = strlen(val);
+ safesysfree(environ[i]);
+ nlen = strlen(nam);
+ vlen = strlen(val);
- environ[i] = (char*)safesysmalloc((nlen+vlen+2) * sizeof(char));
- /* all that work just for this */
- my_setenv_format(environ[i], nam, nlen, val, vlen);
+ environ[i] = (char*)safesysmalloc((nlen+vlen+2) * sizeof(char));
+ /* all that work just for this */
+ my_setenv_format(environ[i], nam, nlen, val, vlen);
} else {
# endif
-# if defined(__CYGWIN__) || defined(EPOC) || defined(__SYMBIAN32__)
+# if defined(__CYGWIN__) || defined(EPOC) || defined(__SYMBIAN32__) || defined(__riscos__)
# if defined(HAS_UNSETENV)
if (val == NULL) {
(void)unsetenv(nam);
int vlen;
if (!val) {
- val = "";
+ val = "";
}
vlen = strlen(val);
Newx(envstr, nlen+vlen+2, char);
{
register I32 i;
register const I32 len = strlen(nam);
+ PERL_UNUSED_CONTEXT;
for (i = 0; environ[i]; i++) {
if (
I32
Perl_unlnk(pTHX_ const char *f) /* unlink all versions of a file */
{
- I32 i;
+ I32 retries = 0;
- for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
- return i ? 0 : -1;
+ while (PerlLIO_unlink(f) >= 0)
+ retries++;
+ return retries ? 0 : -1;
}
#endif
type value; \
char c[sizeof(type)]; \
} u; \
- register I32 i; \
- register I32 s = 0; \
+ register U32 i; \
+ register U32 s = 0; \
for (i = 0; i < sizeof(u.c); i++, s += 8) { \
u.c[i] = (n >> s) & 0xFF; \
} \
type value; \
char c[sizeof(type)]; \
} u; \
- register I32 i; \
- register I32 s = 0; \
+ register U32 i; \
+ register U32 s = 0; \
u.value = n; \
n = 0; \
for (i = 0; i < sizeof(u.c); i++, s += 8) { \
type value; \
char c[sizeof(type)]; \
} u; \
- register I32 i; \
- register I32 s = 8*(sizeof(u.c)-1); \
+ register U32 i; \
+ register U32 s = 8*(sizeof(u.c)-1); \
for (i = 0; i < sizeof(u.c); i++, s -= 8) { \
u.c[i] = (n >> s) & 0xFF; \
} \
type value; \
char c[sizeof(type)]; \
} u; \
- register I32 i; \
- register I32 s = 8*(sizeof(u.c)-1); \
+ register U32 i; \
+ register U32 s = 8*(sizeof(u.c)-1); \
u.value = n; \
n = 0; \
for (i = 0; i < sizeof(u.c); i++, s -= 8) { \
taint_proper("Insecure %s%s", "EXEC");
}
if (PerlProc_pipe(p) < 0)
- return Nullfp;
+ return NULL;
/* Try for another pipe pair for error return */
if (PerlProc_pipe(pp) >= 0)
did_pipes = 1;
PerlLIO_close(pp[0]);
PerlLIO_close(pp[1]);
}
- return Nullfp;
+ return NULL;
}
sleep(5);
}
}
}
#endif
- do_aexec5(Nullsv, args-1, args-1+n, pp[1], did_pipes);
+ do_aexec5(NULL, args-1, args-1+n, pp[1], did_pipes);
PerlProc__exit(1);
#undef THIS
#undef THAT
/* If we managed to get status pipe check for exec fail */
if (did_pipes && pid > 0) {
int errkid;
- int n = 0, n1;
+ unsigned n = 0;
+ SSize_t n1;
while (n < sizeof(int)) {
n1 = PerlLIO_read(pp[0],
pid2 = wait4pid(pid, &status, 0);
} while (pid2 == -1 && errno == EINTR);
errno = errkid; /* Propagate errno from kid */
- return Nullfp;
+ return NULL;
}
}
if (did_pipes)
PerlLIO_close(pp[0]);
return PerlIO_fdopen(p[This], mode);
#else
+# ifdef OS2 /* Same, without fork()ing and all extra overhead... */
+ return my_syspopen4(aTHX_ Nullch, mode, n, args);
+# else
Perl_croak(aTHX_ "List form of piped open not implemented");
return (PerlIO *) NULL;
+# endif
#endif
}
taint_proper("Insecure %s%s", "EXEC");
}
if (PerlProc_pipe(p) < 0)
- return Nullfp;
+ return NULL;
if (doexec && PerlProc_pipe(pp) >= 0)
did_pipes = 1;
while ((pid = PerlProc_fork()) < 0) {
}
if (!doexec)
Perl_croak(aTHX_ "Can't fork");
- return Nullfp;
+ return NULL;
}
sleep(5);
}
PerlProc__exit(1);
}
#endif /* defined OS2 */
- if ((tmpgv = gv_fetchpvs("$",TRUE, SVt_PV))) {
+
+#ifdef PERLIO_USING_CRLF
+ /* Since we circumvent IO layers when we manipulate low-level
+ filedescriptors directly, need to manually switch to the
+ default, binary, low-level mode; see PerlIOBuf_open(). */
+ PerlLIO_setmode((*mode == 'r'), O_BINARY);
+#endif
+
+ if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) {
SvREADONLY_off(GvSV(tmpgv));
sv_setiv(GvSV(tmpgv), PerlProc_getpid());
SvREADONLY_on(GvSV(tmpgv));
#ifdef PERL_USES_PL_PIDSTATUS
hv_clear(PL_pidstatus); /* we have no children */
#endif
- return Nullfp;
+ return NULL;
#undef THIS
#undef THAT
}
PL_forkprocess = pid;
if (did_pipes && pid > 0) {
int errkid;
- int n = 0, n1;
+ unsigned n = 0;
+ SSize_t n1;
while (n < sizeof(int)) {
n1 = PerlLIO_read(pp[0],
pid2 = wait4pid(pid, &status, 0);
} while (pid2 == -1 && errno == EINTR);
errno = errkid; /* Propagate errno from kid */
- return Nullfp;
+ return NULL;
}
}
if (did_pipes)
#if defined(atarist) || defined(EPOC)
FILE *popen();
PerlIO *
-Perl_my_popen(pTHX_ char *cmd, char *mode)
+Perl_my_popen((pTHX_ const char *cmd, const char *mode)
{
PERL_FLUSHALL_FOR_CHILD;
/* Call system's popen() to get a FILE *, then import it.
#if defined(DJGPP)
FILE *djgpp_popen();
PerlIO *
-Perl_my_popen(pTHX_ char *cmd, char *mode)
+Perl_my_popen((pTHX_ const char *cmd, const char *mode)
{
PERL_FLUSHALL_FOR_CHILD;
/* Call system's popen() to get a FILE *, then import it.
Perl_rsignal_state(pTHX_ int signo)
{
struct sigaction oact;
+ PERL_UNUSED_CONTEXT;
if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
return (Sighandler_t) SIG_ERR;
goto finish;
#endif
#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
- result = wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
+ result = wait4((pid==-1)?0:pid,statusp,flags,NULL);
goto finish;
#endif
#ifdef PERL_USES_PL_PIDSTATUS
{
register I32 todo;
register const char * const frombase = from;
+ PERL_UNUSED_CONTEXT;
if (len == 1) {
register const char c = *from;
const char *const *const search_ext, I32 flags)
{
dVAR;
- const char *xfound = Nullch;
- char *xfailed = Nullch;
+ const char *xfound = NULL;
+ char *xfailed = NULL;
char tmpbuf[MAXPATHLEN];
register char *s;
I32 len = 0;
static const char *const exts[] = { SEARCH_EXTS };
const char *const *const ext = search_ext ? search_ext : exts;
int extidx = 0, i = 0;
- const char *curext = Nullch;
+ const char *curext = NULL;
#else
PERL_UNUSED_ARG(search_ext);
# define MAX_EXT_LEN 0
int idx = 0, deftypes = 1;
bool seen_dot = 1;
- const int hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch);
+ const int hasdir = !dosearch || (strpbrk(scriptname,":[</") != NULL);
# else
if (dosearch) {
int idx = 0, deftypes = 1;
bool seen_dot = 1;
- const int hasdir = (strpbrk(scriptname,":[</") != Nullch);
+ const int hasdir = (strpbrk(scriptname,":[</") != NULL);
# endif
/* The first time through, just add SEARCH_EXTS to whatever we
* already have, so we can check for default file types. */
if ((strlen(tmpbuf) + strlen(scriptname)
+ MAX_EXT_LEN) >= sizeof tmpbuf)
continue; /* don't search dir with too-long name */
- strcat(tmpbuf, scriptname);
+ my_strlcat(tmpbuf, scriptname, sizeof(tmpbuf));
#else /* !VMS */
#ifdef DOSISH
len = strlen(scriptname);
if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
break;
- /* FIXME? Convert to memcpy */
- cur = strcpy(tmpbuf, scriptname);
+ my_strlcpy(tmpbuf, scriptname, sizeof(tmpbuf));
+ cur = tmpbuf;
}
} while (extidx >= 0 && ext[extidx] /* try an extension? */
- && strcpy(tmpbuf+len, ext[extidx++]));
+ && my_strlcpy(tmpbuf+len, ext[extidx++], sizeof(tmpbuf) - len));
#endif
}
#endif
if (len == 2 && tmpbuf[0] == '.')
seen_dot = 1;
#endif
- /* FIXME? Convert to memcpy by storing previous strlen(scriptname)
- */
- (void)strcpy(tmpbuf + len, scriptname);
+ (void)my_strlcpy(tmpbuf + len, scriptname, sizeof(tmpbuf) - len);
#endif /* !VMS */
#ifdef SEARCH_EXTS
#ifdef SEARCH_EXTS
} while ( retval < 0 /* not there */
&& extidx>=0 && ext[extidx] /* try an extension? */
- && strcpy(tmpbuf+len, ext[extidx++])
+ && my_strlcpy(tmpbuf+len, ext[extidx++], sizeof(tmpbuf) - len)
);
#endif
if (retval < 0)
(xfailed ? "" : " on PATH"),
(xfailed || seen_dot) ? "" : ", '.' not in PATH");
}
- scriptname = Nullch;
+ scriptname = NULL;
}
Safefree(xfailed);
scriptname = xfound;
}
- return (scriptname ? savepv(scriptname) : Nullch);
+ return (scriptname ? savepv(scriptname) : NULL);
}
#ifndef PERL_GET_CONTEXT_DEFINED
char **
Perl_get_op_names(pTHX)
{
- return (char **)PL_op_name;
+ PERL_UNUSED_CONTEXT;
+ return (char **)PL_op_name;
}
char **
Perl_get_op_descs(pTHX)
{
- return (char **)PL_op_desc;
+ PERL_UNUSED_CONTEXT;
+ return (char **)PL_op_desc;
}
const char *
Perl_get_no_modify(pTHX)
{
- return PL_no_modify;
+ PERL_UNUSED_CONTEXT;
+ return PL_no_modify;
}
U32 *
Perl_get_opargs(pTHX)
{
- return (U32 *)PL_opargs;
+ PERL_UNUSED_CONTEXT;
+ return (U32 *)PL_opargs;
}
PPADDR_t*
Perl_get_ppaddr(pTHX)
{
- dVAR;
- return (PPADDR_t*)PL_ppaddr;
+ dVAR;
+ PERL_UNUSED_CONTEXT;
+ return (PPADDR_t*)PL_ppaddr;
}
#ifndef HAS_GETENV_LEN
Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
{
char * const env_trans = PerlEnv_getenv(env_elem);
+ PERL_UNUSED_CONTEXT;
if (env_trans)
*len = strlen(env_trans);
return env_trans;
Perl_get_vtbl(pTHX_ int vtbl_id)
{
const MGVTBL* result;
+ PERL_UNUSED_CONTEXT;
switch(vtbl_id) {
case want_vtbl_sv:
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;
result = &PL_vtbl_utf8;
break;
default:
- result = Null(MGVTBL*);
+ result = NULL;
break;
}
return (MGVTBL*)result;
void
Perl_report_evil_fh(pTHX_ const GV *gv, const IO *io, I32 op)
{
- const char * const func =
- op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
- op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
- PL_op_desc[op];
- const char * const pars = OP_IS_FILETEST(op) ? "" : "()";
- const char * const type = OP_IS_SOCKET(op)
- || (gv && io && IoTYPE(io) == IoTYPE_SOCKET)
- ? "socket" : "filehandle";
const char * const name = gv && isGV(gv) ? GvENAME(gv) : NULL;
if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) {
if (ckWARN(WARN_IO)) {
- const char * const direction = (op == OP_phoney_INPUT_ONLY) ? "in" : "out";
+ const char * const direction =
+ (const char *)((op == OP_phoney_INPUT_ONLY) ? "in" : "out");
if (name && *name)
Perl_warner(aTHX_ packWARN(WARN_IO),
"Filehandle %s opened only for %sput",
}
if (ckWARN(warn_type)) {
+ const char * const pars =
+ (const char *)(OP_IS_FILETEST(op) ? "" : "()");
+ const char * const func =
+ (const char *)
+ (op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
+ op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
+ op < 0 ? "" : /* handle phoney cases */
+ PL_op_desc[op]);
+ const char * const type =
+ (const char *)
+ (OP_IS_SOCKET(op) ||
+ (gv && io && IoTYPE(io) == IoTYPE_SOCKET) ?
+ "socket" : "filehandle");
if (name && *name) {
Perl_warner(aTHX_ packWARN(warn_type),
"%s%s on %s %s %s", func, pars, vile, type, name);
int secs;
int month, mday, year, jday;
int odd_cent, odd_year;
+ PERL_UNUSED_CONTEXT;
#define DAYS_PER_YEAR 365
#define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1)
else {
/* Possibly buf overflowed - try again with a bigger buf */
const int fmtlen = strlen(fmt);
- const int bufsize = fmtlen + buflen;
+ int bufsize = fmtlen + buflen;
Newx(buf, bufsize, char);
while (buf) {
buf = NULL;
break;
}
- Renew(buf, bufsize*2, char);
+ bufsize *= 2;
+ Renew(buf, bufsize, char);
}
return buf;
}
Function must be called with an already existing SV like
sv = newSV(0);
- s = scan_version(s,SV *sv, bool qv);
+ s = scan_version(s, SV *sv, bool qv);
Performs some preprocessing to the string to ensure that
it has the correct characteristics of a version. Flags the
object if it contains an underscore (which denotes this
-is a alpha version). The boolean qv denotes that the version
+is an alpha version). The boolean qv denotes that the version
should be interpreted as if it had multiple decimals, even if
it doesn't.
if ( alpha && !saw_period )
Perl_croak(aTHX_ "Invalid version format (alpha without decimal)");
+ if ( alpha && saw_period && width == 0 )
+ Perl_croak(aTHX_ "Invalid version format (misplaced _ in number)");
+
if ( saw_period > 1 )
qv = 1; /* force quoted version processing */
/* Append revision */
av_push(av, newSViv(rev));
- if ( *pos == '.' && isDIGIT(pos[1]) )
+ if ( *pos == '.' )
s = ++pos;
else if ( *pos == '_' && isDIGIT(pos[1]) )
s = ++pos;
if ( av_len(av) == -1 ) /* oops, someone forgot to pass a value */
av_push(av, newSViv(0));
+ /* fix RT#19517 - special case 'undef' as string */
+ if ( *s == 'u' && strEQ(s,"undef") ) {
+ s += 5;
+ }
+
/* And finally, store the AV in the hash */
hv_store((HV *)hv, "version", 7, newRV_noinc((SV *)av), 0);
return s;
}
#ifdef SvVOK
{
- const MAGIC* const mg = SvVOK(ver);
+ const MAGIC* const mg = SvVSTRING_mg(ver);
if ( mg ) { /* already a v-string */
const STRLEN len = mg->mg_len;
char * const version = savepvn( (const char*)mg->mg_ptr, len);
}
}
#endif
- return upg_version(rv);
+ return upg_version(rv, FALSE);
}
/*
In-place upgrade of the supplied SV to a version object.
- SV *sv = upg_version(SV *sv);
+ SV *sv = upg_version(SV *sv, bool qv);
-Returns a pointer to the upgraded SV.
+Returns a pointer to the upgraded SV. Set the boolean qv if you want
+to force this SV to be interpreted as an "extended" version.
=cut
*/
SV *
-Perl_upg_version(pTHX_ SV *ver)
+Perl_upg_version(pTHX_ SV *ver, bool qv)
{
const char *version, *s;
- bool qv = 0;
#ifdef SvVOK
const MAGIC *mg;
#endif
- if ( SvNOK(ver) ) /* may get too much accuracy */
+ if ( SvNOK(ver) && !( SvPOK(ver) && sv_len(ver) == 3 ) )
{
+ /* may get too much accuracy */
char tbuf[64];
- const STRLEN len = my_sprintf(tbuf,"%.9"NVgf, SvNVX(ver));
+#ifdef USE_LOCALE_NUMERIC
+ char *loc = setlocale(LC_NUMERIC, "C");
+#endif
+ STRLEN len = my_snprintf(tbuf, sizeof(tbuf), "%.9"NVff, SvNVX(ver));
+#ifdef USE_LOCALE_NUMERIC
+ setlocale(LC_NUMERIC, loc);
+#endif
+ while (tbuf[len-1] == '0' && len > 0) len--;
version = savepvn(tbuf, len);
}
#ifdef SvVOK
- else if ( (mg = SvVOK(ver)) ) { /* already a v-string */
+ else if ( (mg = SvVSTRING_mg(ver)) ) { /* already a v-string */
version = savepvn( (const char*)mg->mg_ptr,mg->mg_len );
qv = 1;
}
#endif
else /* must be a string or something like a string */
{
- version = savepv(SvPV_nolen(ver));
+ STRLEN len;
+ version = savepv(SvPV(ver,len));
+#ifndef SvVOK
+# if PERL_VERSION > 5
+ /* This will only be executed for 5.6.0 - 5.8.0 inclusive */
+ if ( len == 3 && !instr(version,".") && !instr(version,"_") ) {
+ /* may be a v-string */
+ SV * const nsv = sv_newmortal();
+ const char *nver;
+ const char *pos;
+ int saw_period = 0;
+ sv_setpvf(nsv,"%vd",ver);
+ pos = nver = savepv(SvPV_nolen(nsv));
+
+ /* scan the resulting formatted string */
+ while ( *pos == '.' || isDIGIT(*pos) ) {
+ if ( *pos == '.' )
+ saw_period++ ;
+ pos++;
+ }
+
+ /* is definitely a v-string */
+ if ( saw_period == 2 ) {
+ Safefree(version);
+ version = nver;
+ }
+ }
+# endif
+#endif
}
+
s = scan_version(version, ver, qv);
if ( *s != '\0' )
- if(ckWARN(WARN_MISC))
+ if(ckWARN(WARN_MISC))
Perl_warner(aTHX_ packWARN(WARN_MISC),
- "Version string '%s' contains invalid data; "
- "ignoring: '%s'", version, s);
+ "Version string '%s' contains invalid data; "
+ "ignoring: '%s'", version, s);
Safefree(version);
return ver;
}
void
Perl_sv_nosharing(pTHX_ SV *sv)
{
+ PERL_UNUSED_CONTEXT;
PERL_UNUSED_ARG(sv);
}
if (*p) {
if (isDIGIT(*p)) {
opt = (U32) atoi(p);
- while (isDIGIT(*p)) p++;
+ while (isDIGIT(*p))
+ p++;
if (*p && *p != '\n' && *p != '\r')
Perl_croak(aTHX_ "Unknown Unicode option letter '%c'", *p);
}
opt |= PERL_UNICODE_LOCALE_FLAG; break;
case PERL_UNICODE_ARGV:
opt |= PERL_UNICODE_ARGV_FLAG; break;
+ case PERL_UNICODE_UTF8CACHEASSERT:
+ opt |= PERL_UNICODE_UTF8CACHEASSERT_FLAG; break;
default:
if (*p != '\n' && *p != '\r')
Perl_croak(aTHX_
UV myseed = 0;
if (s)
- while (isSPACE(*s)) s++;
+ while (isSPACE(*s))
+ s++;
if (s && isDIGIT(*s))
myseed = (UV)Atoul(s);
else
{
const char * const stashpv = CopSTASHPV(c);
const char * const name = HvNAME_get(hv);
+ PERL_UNUSED_CONTEXT;
if (stashpv == name)
return TRUE;
#ifdef PERL_GLOBAL_STRUCT
+#define PERL_GLOBAL_STRUCT_INIT
+#include "opcode.h" /* the ppaddr and check */
+
struct perl_vars *
Perl_init_global_struct(pTHX)
{
struct perl_vars *plvarsp = NULL;
-#ifdef PERL_GLOBAL_STRUCT
-# define PERL_GLOBAL_STRUCT_INIT
-# include "opcode.h" /* the ppaddr and check */
+# ifdef PERL_GLOBAL_STRUCT
const IV nppaddr = sizeof(Gppaddr)/sizeof(Perl_ppaddr_t);
const IV ncheck = sizeof(Gcheck) /sizeof(Perl_check_t);
# ifdef PERL_GLOBAL_STRUCT_PRIVATE
# undef PERLVARIC
# undef PERLVARISC
# ifdef PERL_GLOBAL_STRUCT
- plvarsp->Gppaddr = PerlMem_malloc(nppaddr * sizeof(Perl_ppaddr_t));
+ plvarsp->Gppaddr =
+ (Perl_ppaddr_t*)
+ PerlMem_malloc(nppaddr * sizeof(Perl_ppaddr_t));
if (!plvarsp->Gppaddr)
exit(1);
- plvarsp->Gcheck = PerlMem_malloc(ncheck * sizeof(Perl_check_t));
+ plvarsp->Gcheck =
+ (Perl_check_t*)
+ PerlMem_malloc(ncheck * sizeof(Perl_check_t));
if (!plvarsp->Gcheck)
exit(1);
Copy(Gppaddr, plvarsp->Gppaddr, nppaddr, Perl_ppaddr_t);
# ifdef PERL_SET_VARS
PERL_SET_VARS(plvarsp);
# endif
-# undef PERL_GLOBAL_STRUCT_INIT
-#endif
+# undef PERL_GLOBAL_STRUCT_INIT
+# endif
return plvarsp;
}
void
Perl_free_global_struct(pTHX_ struct perl_vars *plvarsp)
{
-#ifdef PERL_GLOBAL_STRUCT
+# ifdef PERL_GLOBAL_STRUCT
# ifdef PERL_UNSET_VARS
PERL_UNSET_VARS(plvarsp);
# endif
free(plvarsp->Gppaddr);
free(plvarsp->Gcheck);
-# ifdef PERL_GLOBAL_STRUCT_PRIVATE
+# ifdef PERL_GLOBAL_STRUCT_PRIVATE
free(plvarsp);
-# endif
-#endif
+# endif
+# endif
}
#endif /* PERL_GLOBAL_STRUCT */
#ifdef PERL_MEM_LOG
+/*
+ * PERL_MEM_LOG: the Perl_mem_log_..() will be compiled.
+ *
+ * PERL_MEM_LOG_ENV: if defined, during run time the environment
+ * variable PERL_MEM_LOG will be consulted, and if the integer value
+ * of that is true, the logging will happen. (The default is to
+ * always log if the PERL_MEM_LOG define was in effect.)
+ */
+
+/*
+ * PERL_MEM_LOG_SPRINTF_BUF_SIZE: size of a (stack-allocated) buffer
+ * the Perl_mem_log_...() will use (either via sprintf or snprintf).
+ */
#define PERL_MEM_LOG_SPRINTF_BUF_SIZE 128
+/*
+ * PERL_MEM_LOG_FD: the file descriptor the Perl_mem_log_...() will
+ * log to. You can also define in compile time PERL_MEM_LOG_ENV_FD,
+ * in which case the environment variable PERL_MEM_LOG_FD will be
+ * consulted for the file descriptor number to use.
+ */
+#ifndef PERL_MEM_LOG_FD
+# define PERL_MEM_LOG_FD 2 /* If STDERR is too boring for you. */
+#endif
+
Malloc_t
Perl_mem_log_alloc(const UV n, const UV typesize, const char *typename, Malloc_t newalloc, const char *filename, const int linenumber, const char *funcname)
{
#ifdef PERL_MEM_LOG_STDERR
- /* We can't use PerlIO for obvious reasons. */
- char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE];
- const STRLEN len = my_sprintf(buf,
- "alloc: %s:%d:%s: %"IVdf" %"UVuf
- " %s = %"IVdf": %"UVxf"\n",
- filename, linenumber, funcname, n, typesize,
- typename, n * typesize, PTR2UV(newalloc));
- PerlLIO_write(2, buf, len);
+# if defined(PERL_MEM_LOG_ENV) || defined(PERL_MEM_LOG_ENV_FD)
+ char *s;
+# endif
+# ifdef PERL_MEM_LOG_ENV
+ s = getenv("PERL_MEM_LOG");
+ if (s ? atoi(s) : 0)
+# endif
+ {
+ /* We can't use SVs or PerlIO for obvious reasons,
+ * so we'll use stdio and low-level IO instead. */
+ char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE];
+# ifdef PERL_MEM_LOG_TIMESTAMP
+ struct timeval tv;
+# ifdef HAS_GETTIMEOFDAY
+ gettimeofday(&tv, 0);
+# endif
+ /* If there are other OS specific ways of hires time than
+ * gettimeofday() (see ext/Time/HiRes), the easiest way is
+ * probably that they would be used to fill in the struct
+ * timeval. */
+# endif
+ {
+ const STRLEN len =
+ my_snprintf(buf,
+ sizeof(buf),
+# ifdef PERL_MEM_LOG_TIMESTAMP
+ "%10d.%06d: "
+# endif
+ "alloc: %s:%d:%s: %"IVdf" %"UVuf
+ " %s = %"IVdf": %"UVxf"\n",
+# ifdef PERL_MEM_LOG_TIMESTAMP
+ (int)tv.tv_sec, (int)tv.tv_usec,
+# endif
+ filename, linenumber, funcname, n, typesize,
+ typename, n * typesize, PTR2UV(newalloc));
+# ifdef PERL_MEM_LOG_ENV_FD
+ s = PerlEnv_getenv("PERL_MEM_LOG_FD");
+ PerlLIO_write(s ? atoi(s) : PERL_MEM_LOG_FD, buf, len);
+# else
+ PerlLIO_write(PERL_MEM_LOG_FD, buf, len);
+#endif
+ }
+ }
#endif
return newalloc;
}
Perl_mem_log_realloc(const UV n, const UV typesize, const char *typename, Malloc_t oldalloc, Malloc_t newalloc, const char *filename, const int linenumber, const char *funcname)
{
#ifdef PERL_MEM_LOG_STDERR
- /* We can't use PerlIO for obvious reasons. */
- char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE];
- const STRLEN len = my_sprintf(buf, "realloc: %s:%d:%s: %"IVdf" %"UVuf
- " %s = %"IVdf": %"UVxf" -> %"UVxf"\n",
- filename, linenumber, funcname, n, typesize,
- typename, n * typesize, PTR2UV(oldalloc),
- PTR2UV(newalloc));
- PerlLIO_write(2, buf, len);
+# if defined(PERL_MEM_LOG_ENV) || defined(PERL_MEM_LOG_ENV_FD)
+ char *s;
+# endif
+# ifdef PERL_MEM_LOG_ENV
+ s = PerlEnv_getenv("PERL_MEM_LOG");
+ if (s ? atoi(s) : 0)
+# endif
+ {
+ /* We can't use SVs or PerlIO for obvious reasons,
+ * so we'll use stdio and low-level IO instead. */
+ char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE];
+# ifdef PERL_MEM_LOG_TIMESTAMP
+ struct timeval tv;
+ gettimeofday(&tv, 0);
+# endif
+ {
+ const STRLEN len =
+ my_snprintf(buf,
+ sizeof(buf),
+# ifdef PERL_MEM_LOG_TIMESTAMP
+ "%10d.%06d: "
+# endif
+ "realloc: %s:%d:%s: %"IVdf" %"UVuf
+ " %s = %"IVdf": %"UVxf" -> %"UVxf"\n",
+# ifdef PERL_MEM_LOG_TIMESTAMP
+ (int)tv.tv_sec, (int)tv.tv_usec,
+# endif
+ filename, linenumber, funcname, n, typesize,
+ typename, n * typesize, PTR2UV(oldalloc),
+ PTR2UV(newalloc));
+# ifdef PERL_MEM_LOG_ENV_FD
+ s = PerlEnv_getenv("PERL_MEM_LOG_FD");
+ PerlLIO_write(s ? atoi(s) : PERL_MEM_LOG_FD, buf, len);
+# else
+ PerlLIO_write(PERL_MEM_LOG_FD, buf, len);
+# endif
+ }
+ }
#endif
return newalloc;
}
Perl_mem_log_free(Malloc_t oldalloc, const char *filename, const int linenumber, const char *funcname)
{
#ifdef PERL_MEM_LOG_STDERR
- /* We can't use PerlIO for obvious reasons. */
- char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE];
- const STRLEN len = my_sprintf(buf, "free: %s:%d:%s: %"UVxf"\n",
- filename, linenumber, funcname,
- PTR2UV(oldalloc));
- PerlLIO_write(2, buf, len);
+# if defined(PERL_MEM_LOG_ENV) || defined(PERL_MEM_LOG_ENV_FD)
+ char *s;
+# endif
+# ifdef PERL_MEM_LOG_ENV
+ s = PerlEnv_getenv("PERL_MEM_LOG");
+ if (s ? atoi(s) : 0)
+# endif
+ {
+ /* We can't use SVs or PerlIO for obvious reasons,
+ * so we'll use stdio and low-level IO instead. */
+ char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE];
+# ifdef PERL_MEM_LOG_TIMESTAMP
+ struct timeval tv;
+ gettimeofday(&tv, 0);
+# endif
+ {
+ const STRLEN len =
+ my_snprintf(buf,
+ sizeof(buf),
+# ifdef PERL_MEM_LOG_TIMESTAMP
+ "%10d.%06d: "
+# endif
+ "free: %s:%d:%s: %"UVxf"\n",
+# ifdef PERL_MEM_LOG_TIMESTAMP
+ (int)tv.tv_sec, (int)tv.tv_usec,
+# endif
+ filename, linenumber, funcname,
+ PTR2UV(oldalloc));
+# ifdef PERL_MEM_LOG_ENV_FD
+ s = PerlEnv_getenv("PERL_MEM_LOG_FD");
+ PerlLIO_write(s ? atoi(s) : PERL_MEM_LOG_FD, buf, len);
+# else
+ PerlLIO_write(PERL_MEM_LOG_FD, buf, len);
+# endif
+ }
+ }
#endif
return oldalloc;
}
}
#endif
+/*
+=for apidoc my_snprintf
+
+The C library C<snprintf> functionality, if available and
+standards-compliant (uses C<vsnprintf>, actually). However, if the
+C<vsnprintf> is not available, will unfortunately use the unsafe
+C<vsprintf> which can overrun the buffer (there is an overrun check,
+but that may be too late). Consider using C<sv_vcatpvf> instead, or
+getting C<vsnprintf>.
+
+=cut
+*/
+int
+Perl_my_snprintf(char *buffer, const Size_t len, const char *format, ...)
+{
+ dTHX;
+ int retval;
+ va_list ap;
+ va_start(ap, format);
+#ifdef HAS_VSNPRINTF
+ retval = vsnprintf(buffer, len, format, ap);
+#else
+ retval = vsprintf(buffer, format, ap);
+#endif
+ va_end(ap);
+ /* vsnprintf() shows failure with >= len, vsprintf() with < 0 */
+ if (retval < 0 || (len > 0 && (Size_t)retval >= len))
+ Perl_croak(aTHX_ "panic: my_snprintf buffer overflow");
+ return retval;
+}
+
+/*
+=for apidoc my_vsnprintf
+
+The C library C<vsnprintf> if available and standards-compliant.
+However, if if the C<vsnprintf> is not available, will unfortunately
+use the unsafe C<vsprintf> which can overrun the buffer (there is an
+overrun check, but that may be too late). Consider using
+C<sv_vcatpvf> instead, or getting C<vsnprintf>.
+
+=cut
+*/
+int
+Perl_my_vsnprintf(char *buffer, const Size_t len, const char *format, va_list ap)
+{
+ dTHX;
+ int retval;
+#ifdef NEED_VA_COPY
+ va_list apc;
+ Perl_va_copy(ap, apc);
+# ifdef HAS_VSNPRINTF
+ retval = vsnprintf(buffer, len, format, apc);
+# else
+ retval = vsprintf(buffer, format, apc);
+# endif
+#else
+# ifdef HAS_VSNPRINTF
+ retval = vsnprintf(buffer, len, format, ap);
+# else
+ retval = vsprintf(buffer, format, ap);
+# endif
+#endif /* #ifdef NEED_VA_COPY */
+ /* vsnprintf() shows failure with >= len, vsprintf() with < 0 */
+ if (retval < 0 || (len > 0 && (Size_t)retval >= len))
+ Perl_croak(aTHX_ "panic: my_vsnprintf buffer overflow");
+ return retval;
+}
+
void
Perl_my_clearenv(pTHX)
{
(void)clearenv();
# elif defined(HAS_UNSETENV)
int bsiz = 80; /* Most envvar names will be shorter than this. */
- char *buf = (char*)safesysmalloc(bsiz * sizeof(char));
+ int bufsiz = bsiz * sizeof(char); /* sizeof(char) paranoid? */
+ char *buf = (char*)safesysmalloc(bufsiz);
while (*environ != NULL) {
char *e = strchr(*environ, '=');
- int l = e ? e - *environ : strlen(*environ);
+ int l = e ? e - *environ : (int)strlen(*environ);
if (bsiz < l + 1) {
(void)safesysfree(buf);
- bsiz = l + 1;
- buf = (char*)safesysmalloc(bsiz * sizeof(char));
+ bsiz = l + 1; /* + 1 for the \0. */
+ buf = (char*)safesysmalloc(bufsiz);
}
- strncpy(buf, *environ, l);
- *(buf + l) = '\0';
+ my_strlcpy(buf, *environ, l + 1);
(void)unsetenv(buf);
}
(void)safesysfree(buf);
#ifdef PERL_IMPLICIT_CONTEXT
-/* implements the MY_CXT_INIT macro. The first time a module is loaded,
+/* Implements the MY_CXT_INIT macro. The first time a module is loaded,
the global PL_my_cxt_index is incremented, and that value is assigned to
that module's static my_cxt_index (who's address is passed as an arg).
Then, for each interpreter this function is called for, it makes sure a
void* slot is available to hang the static data off, by allocating or
extending the interpreter's PL_my_cxt_list array */
+#ifndef PERL_GLOBAL_STRUCT_PRIVATE
void *
Perl_my_cxt_init(pTHX_ int *index, size_t size)
{
Zero(p, size, char);
return p;
}
+
+#else /* #ifndef PERL_GLOBAL_STRUCT_PRIVATE */
+
+int
+Perl_my_cxt_index(pTHX_ const char *my_cxt_key)
+{
+ dVAR;
+ int index;
+
+ for (index = 0; index < PL_my_cxt_index; index++) {
+ const char *key = PL_my_cxt_keys[index];
+ /* try direct pointer compare first - there are chances to success,
+ * and it's much faster.
+ */
+ if ((key == my_cxt_key) || strEQ(key, my_cxt_key))
+ return index;
+ }
+ return -1;
+}
+
+void *
+Perl_my_cxt_init(pTHX_ const char *my_cxt_key, size_t size)
+{
+ dVAR;
+ void *p;
+ int index;
+
+ index = Perl_my_cxt_index(aTHX_ my_cxt_key);
+ if (index == -1) {
+ /* this module hasn't been allocated an index yet */
+ MUTEX_LOCK(&PL_my_ctx_mutex);
+ index = PL_my_cxt_index++;
+ MUTEX_UNLOCK(&PL_my_ctx_mutex);
+ }
+
+ /* make sure the array is big enough */
+ if (PL_my_cxt_size <= index) {
+ int old_size = PL_my_cxt_size;
+ int i;
+ if (PL_my_cxt_size) {
+ while (PL_my_cxt_size <= index)
+ PL_my_cxt_size *= 2;
+ Renew(PL_my_cxt_list, PL_my_cxt_size, void *);
+ Renew(PL_my_cxt_keys, PL_my_cxt_size, const char *);
+ }
+ else {
+ PL_my_cxt_size = 16;
+ Newx(PL_my_cxt_list, PL_my_cxt_size, void *);
+ Newx(PL_my_cxt_keys, PL_my_cxt_size, const char *);
+ }
+ for (i = old_size; i < PL_my_cxt_size; i++) {
+ PL_my_cxt_keys[i] = 0;
+ PL_my_cxt_list[i] = 0;
+ }
+ }
+ PL_my_cxt_keys[index] = my_cxt_key;
+ /* newSV() allocates one more than needed */
+ p = (void*)SvPVX(newSV(size-1));
+ PL_my_cxt_list[index] = p;
+ Zero(p, size, char);
+ return p;
+}
+#endif /* #ifndef PERL_GLOBAL_STRUCT_PRIVATE */
+#endif /* PERL_IMPLICIT_CONTEXT */
+
+#ifndef HAS_STRLCAT
+Size_t
+Perl_my_strlcat(char *dst, const char *src, Size_t size)
+{
+ Size_t used, length, copy;
+
+ used = strlen(dst);
+ length = strlen(src);
+ if (size > 0 && used < size - 1) {
+ copy = (length >= size - used) ? size - used - 1 : length;
+ memcpy(dst + used, src, copy);
+ dst[used + copy] = '\0';
+ }
+ return used + length;
+}
+#endif
+
+#ifndef HAS_STRLCPY
+Size_t
+Perl_my_strlcpy(char *dst, const char *src, Size_t size)
+{
+ Size_t length, copy;
+
+ length = strlen(src);
+ if (size > 0) {
+ copy = (length >= size) ? size - 1 : length;
+ memcpy(dst, src, copy);
+ dst[copy] = '\0';
+ }
+ return length;
+}
#endif
+#if defined(_MSC_VER) && (_MSC_VER >= 1300) && (_MSC_VER < 1400) && (WINVER < 0x0500)
+/* VC7 or 7.1, building with pre-VC7 runtime libraries. */
+long _ftol( double ); /* Defined by VC6 C libs. */
+long _ftol2( double dblSource ) { return _ftol( dblSource ); }
+#endif
+
+void
+Perl_get_db_sub(pTHX_ SV **svp, CV *cv)
+{
+ dVAR;
+ SV * const dbsv = GvSVn(PL_DBsub);
+ /* We do not care about using sv to call CV;
+ * it's for informational purposes only.
+ */
+
+ save_item(dbsv);
+ if (!PERLDB_SUB_NN) {
+ GV * const gv = CvGV(cv);
+
+ if ( svp && ((CvFLAGS(cv) & (CVf_ANON | CVf_CLONED))
+ || strEQ(GvNAME(gv), "END")
+ || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */
+ !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) )))) {
+ /* Use GV from the stack as a fallback. */
+ /* GV is potentially non-unique, or contain different CV. */
+ SV * const tmp = newRV((SV*)cv);
+ sv_setsv(dbsv, tmp);
+ SvREFCNT_dec(tmp);
+ }
+ else {
+ gv_efullname3(dbsv, gv, NULL);
+ }
+ }
+ else {
+ const int type = SvTYPE(dbsv);
+ if (type < SVt_PVIV && type != SVt_IV)
+ sv_upgrade(dbsv, SVt_PVIV);
+ (void)SvIOK_on(dbsv);
+ SvIV_set(dbsv, PTR2IV(cv)); /* Do it the quickest way */
+ }
+}
+
/*
* Local variables:
* c-indentation-style: bsd
https://perl5.git.perl.org / perl5.git / blobdiff