/* hv.c
*
- * Copyright (c) 1991-1997, Larry Wall
+ * 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.
*/
#include "EXTERN.h"
+#define PERL_IN_HV_C
#include "perl.h"
-static void hv_magic_check _((HV *hv, bool *needs_copy, bool *needs_store));
-#ifndef PERL_OBJECT
-static void hsplit _((HV *hv));
-static void hfreeentries _((HV *hv));
-static void more_he _((void));
-static HEK *save_hek _((const char *str, I32 len, U32 hash));
-#endif
-
-#if defined(STRANGE_MALLOC) || defined(MYMALLOC)
-# define ARRAY_ALLOC_BYTES(size) ( (size)*sizeof(HE*) )
-#else
-# define MALLOC_OVERHEAD 16
-# define ARRAY_ALLOC_BYTES(size) ( (size)*sizeof(HE*)*2 - MALLOC_OVERHEAD )
-#endif
-
STATIC HE*
-new_he(void)
+S_new_he(pTHX)
{
HE* he;
LOCK_SV_MUTEX;
}
STATIC void
-del_he(HE *p)
+S_del_he(pTHX_ HE *p)
{
LOCK_SV_MUTEX;
HeNEXT(p) = (HE*)PL_he_root;
}
STATIC void
-more_he(void)
+S_more_he(pTHX)
{
register HE* he;
register HE* heend;
HeNEXT(he) = 0;
}
+#ifdef PURIFY
+
+#define new_HE() (HE*)safemalloc(sizeof(HE))
+#define del_HE(p) safefree((char*)p)
+
+#else
+
+#define new_HE() new_he()
+#define del_HE(p) del_he(p)
+
+#endif
+
STATIC HEK *
-save_hek(const char *str, I32 len, U32 hash)
+S_save_hek(pTHX_ const char *str, I32 len, U32 hash)
{
char *k;
register HEK *hek;
}
void
-unshare_hek(HEK *hek)
+Perl_unshare_hek(pTHX_ HEK *hek)
{
unsharepvn(HEK_KEY(hek),HEK_LEN(hek),HEK_HASH(hek));
}
+#if defined(USE_ITHREADS)
+HE *
+Perl_he_dup(pTHX_ HE *e, bool shared)
+{
+ HE *ret;
+
+ if (!e)
+ return Nullhe;
+ /* look for it in the table first */
+ ret = (HE*)ptr_table_fetch(PL_ptr_table, e);
+ if (ret)
+ return ret;
+
+ /* create anew and remember what it is */
+ ret = new_HE();
+ ptr_table_store(PL_ptr_table, e, ret);
+
+ HeNEXT(ret) = he_dup(HeNEXT(e),shared);
+ if (HeKLEN(e) == HEf_SVKEY)
+ HeKEY_sv(ret) = SvREFCNT_inc(sv_dup(HeKEY_sv(e)));
+ else if (shared)
+ HeKEY_hek(ret) = share_hek(HeKEY(e), HeKLEN(e), HeHASH(e));
+ else
+ HeKEY_hek(ret) = save_hek(HeKEY(e), HeKLEN(e), HeHASH(e));
+ HeVAL(ret) = SvREFCNT_inc(sv_dup(HeVAL(e)));
+ return ret;
+}
+#endif /* USE_ITHREADS */
+
/* (klen == HEf_SVKEY) is special for MAGICAL hv entries, meaning key slot
* contains an SV* */
+/*
+=for apidoc hv_fetch
+
+Returns the SV which corresponds to the specified key in the hash. The
+C<klen> is the length of the key. If C<lval> is set then the fetch will be
+part of a store. Check that the return value is non-null before
+dereferencing it to a C<SV*>.
+
+See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more
+information on how to use this function on tied hashes.
+
+=cut
+*/
+
SV**
-hv_fetch(HV *hv, const char *key, U32 klen, I32 lval)
+Perl_hv_fetch(pTHX_ HV *hv, const char *key, U32 klen, I32 lval)
{
register XPVHV* xhv;
register U32 hash;
U32 i;
for (i = 0; i < klen; ++i)
if (isLOWER(key[i])) {
- char *nkey = strupr(SvPVX(sv_2mortal(newSVpv(key,klen))));
+ char *nkey = strupr(SvPVX(sv_2mortal(newSVpvn(key,klen))));
SV **ret = hv_fetch(hv, nkey, klen, 0);
if (!ret && lval)
ret = hv_store(hv, key, klen, NEWSV(61,0), 0);
|| (HvNAME(hv) && strEQ(HvNAME(hv),ENV_HV_NAME))
#endif
)
- Newz(503,xhv->xhv_array, ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
+ Newz(503, xhv->xhv_array,
+ PERL_HV_ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
else
return 0;
}
}
#ifdef DYNAMIC_ENV_FETCH /* %ENV lookup? If so, try to fetch the value now */
if (HvNAME(hv) && strEQ(HvNAME(hv),ENV_HV_NAME)) {
- char *gotenv;
-
- if ((gotenv = PerlEnv_getenv(key)) != Nullch) {
- sv = newSVpv(gotenv,strlen(gotenv));
- SvTAINTED_on(sv);
- return hv_store(hv,key,klen,sv,hash);
- }
+ unsigned long len;
+ char *env = PerlEnv_ENVgetenv_len(key,&len);
+ if (env) {
+ sv = newSVpvn(env,len);
+ SvTAINTED_on(sv);
+ return hv_store(hv,key,klen,sv,hash);
+ }
}
#endif
if (lval) { /* gonna assign to this, so it better be there */
/* returns a HE * structure with the all fields set */
/* note that hent_val will be a mortal sv for MAGICAL hashes */
+/*
+=for apidoc hv_fetch_ent
+
+Returns the hash entry which corresponds to the specified key in the hash.
+C<hash> must be a valid precomputed hash number for the given C<key>, or 0
+if you want the function to compute it. IF C<lval> is set then the fetch
+will be part of a store. Make sure the return value is non-null before
+accessing it. The return value when C<tb> is a tied hash is a pointer to a
+static location, so be sure to make a copy of the structure if you need to
+store it somewhere.
+
+See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more
+information on how to use this function on tied hashes.
+
+=cut
+*/
+
HE *
-hv_fetch_ent(HV *hv, SV *keysv, I32 lval, register U32 hash)
+Perl_hv_fetch_ent(pTHX_ HV *hv, SV *keysv, I32 lval, register U32 hash)
{
register XPVHV* xhv;
register char *key;
key = SvPV(keysv, klen);
for (i = 0; i < klen; ++i)
if (isLOWER(key[i])) {
- SV *nkeysv = sv_2mortal(newSVpv(key,klen));
+ SV *nkeysv = sv_2mortal(newSVpvn(key,klen));
(void)strupr(SvPVX(nkeysv));
entry = hv_fetch_ent(hv, nkeysv, 0, 0);
if (!entry && lval)
|| (HvNAME(hv) && strEQ(HvNAME(hv),ENV_HV_NAME))
#endif
)
- Newz(503,xhv->xhv_array, ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
+ Newz(503, xhv->xhv_array,
+ PERL_HV_ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
else
return 0;
}
}
#ifdef DYNAMIC_ENV_FETCH /* %ENV lookup? If so, try to fetch the value now */
if (HvNAME(hv) && strEQ(HvNAME(hv),ENV_HV_NAME)) {
- char *gotenv;
-
- if ((gotenv = PerlEnv_getenv(key)) != Nullch) {
- sv = newSVpv(gotenv,strlen(gotenv));
- SvTAINTED_on(sv);
- return hv_store_ent(hv,keysv,sv,hash);
- }
+ unsigned long len;
+ char *env = PerlEnv_ENVgetenv_len(key,&len);
+ if (env) {
+ sv = newSVpvn(env,len);
+ SvTAINTED_on(sv);
+ return hv_store_ent(hv,keysv,sv,hash);
+ }
}
#endif
if (lval) { /* gonna assign to this, so it better be there */
return 0;
}
-static void
-hv_magic_check (HV *hv, bool *needs_copy, bool *needs_store)
+STATIC void
+S_hv_magic_check(pTHX_ HV *hv, bool *needs_copy, bool *needs_store)
{
MAGIC *mg = SvMAGIC(hv);
*needs_copy = FALSE;
}
}
+/*
+=for apidoc hv_store
+
+Stores an SV in a hash. The hash key is specified as C<key> and C<klen> is
+the length of the key. The C<hash> parameter is the precomputed hash
+value; if it is zero then Perl will compute it. The return value will be
+NULL if the operation failed or if the value did not need to be actually
+stored within the hash (as in the case of tied hashes). Otherwise it can
+be dereferenced to get the original C<SV*>. Note that the caller is
+responsible for suitably incrementing the reference count of C<val> before
+the call, and decrementing it if the function returned NULL.
+
+See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more
+information on how to use this function on tied hashes.
+
+=cut
+*/
+
SV**
-hv_store(HV *hv, const char *key, U32 klen, SV *val, register U32 hash)
+Perl_hv_store(pTHX_ HV *hv, const char *key, U32 klen, SV *val, register U32 hash)
{
register XPVHV* xhv;
register I32 i;
return 0;
#ifdef ENV_IS_CASELESS
else if (mg_find((SV*)hv,'E')) {
- SV *sv = sv_2mortal(newSVpv(key,klen));
+ SV *sv = sv_2mortal(newSVpvn(key,klen));
key = strupr(SvPVX(sv));
hash = 0;
}
PERL_HASH(hash, key, klen);
if (!xhv->xhv_array)
- Newz(505, xhv->xhv_array, ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
+ Newz(505, xhv->xhv_array,
+ PERL_HV_ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
oentry = &((HE**)xhv->xhv_array)[hash & (I32) xhv->xhv_max];
i = 1;
return &HeVAL(entry);
}
- entry = new_he();
+ entry = new_HE();
if (HvSHAREKEYS(hv))
HeKEY_hek(entry) = share_hek(key, klen, hash);
else /* gotta do the real thing */
return &HeVAL(entry);
}
+/*
+=for apidoc hv_store_ent
+
+Stores C<val> in a hash. The hash key is specified as C<key>. The C<hash>
+parameter is the precomputed hash value; if it is zero then Perl will
+compute it. The return value is the new hash entry so created. It will be
+NULL if the operation failed or if the value did not need to be actually
+stored within the hash (as in the case of tied hashes). Otherwise the
+contents of the return value can be accessed using the C<He???> macros
+described here. Note that the caller is responsible for suitably
+incrementing the reference count of C<val> before the call, and
+decrementing it if the function returned NULL.
+
+See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more
+information on how to use this function on tied hashes.
+
+=cut
+*/
+
HE *
-hv_store_ent(HV *hv, SV *keysv, SV *val, register U32 hash)
+Perl_hv_store_ent(pTHX_ HV *hv, SV *keysv, SV *val, register U32 hash)
{
register XPVHV* xhv;
register char *key;
#ifdef ENV_IS_CASELESS
else if (mg_find((SV*)hv,'E')) {
key = SvPV(keysv, klen);
- keysv = sv_2mortal(newSVpv(key,klen));
+ keysv = sv_2mortal(newSVpvn(key,klen));
(void)strupr(SvPVX(keysv));
hash = 0;
}
PERL_HASH(hash, key, klen);
if (!xhv->xhv_array)
- Newz(505, xhv->xhv_array, ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
+ Newz(505, xhv->xhv_array,
+ PERL_HV_ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
oentry = &((HE**)xhv->xhv_array)[hash & (I32) xhv->xhv_max];
i = 1;
return entry;
}
- entry = new_he();
+ entry = new_HE();
if (HvSHAREKEYS(hv))
HeKEY_hek(entry) = share_hek(key, klen, hash);
else /* gotta do the real thing */
return entry;
}
+/*
+=for apidoc hv_delete
+
+Deletes a key/value pair in the hash. The value SV is removed from the
+hash and returned to the caller. The C<klen> is the length of the key.
+The C<flags> value will normally be zero; if set to G_DISCARD then NULL
+will be returned.
+
+=cut
+*/
+
SV *
-hv_delete(HV *hv, const char *key, U32 klen, I32 flags)
+Perl_hv_delete(pTHX_ HV *hv, const char *key, U32 klen, I32 flags)
{
register XPVHV* xhv;
register I32 i;
}
#ifdef ENV_IS_CASELESS
else if (mg_find((SV*)hv,'E')) {
- sv = sv_2mortal(newSVpv(key,klen));
+ sv = sv_2mortal(newSVpvn(key,klen));
key = strupr(SvPVX(sv));
}
#endif
xhv->xhv_fill--;
if (flags & G_DISCARD)
sv = Nullsv;
- else
- sv = sv_mortalcopy(HeVAL(entry));
+ else {
+ sv = sv_2mortal(HeVAL(entry));
+ HeVAL(entry) = &PL_sv_undef;
+ }
if (entry == xhv->xhv_eiter)
HvLAZYDEL_on(hv);
else
return Nullsv;
}
+/*
+=for apidoc hv_delete_ent
+
+Deletes a key/value pair in the hash. The value SV is removed from the
+hash and returned to the caller. The C<flags> value will normally be zero;
+if set to G_DISCARD then NULL will be returned. C<hash> can be a valid
+precomputed hash value, or 0 to ask for it to be computed.
+
+=cut
+*/
+
SV *
-hv_delete_ent(HV *hv, SV *keysv, I32 flags, U32 hash)
+Perl_hv_delete_ent(pTHX_ HV *hv, SV *keysv, I32 flags, U32 hash)
{
register XPVHV* xhv;
register I32 i;
#ifdef ENV_IS_CASELESS
else if (mg_find((SV*)hv,'E')) {
key = SvPV(keysv, klen);
- keysv = sv_2mortal(newSVpv(key,klen));
+ keysv = sv_2mortal(newSVpvn(key,klen));
(void)strupr(SvPVX(keysv));
hash = 0;
}
xhv->xhv_fill--;
if (flags & G_DISCARD)
sv = Nullsv;
- else
- sv = sv_mortalcopy(HeVAL(entry));
+ else {
+ sv = sv_2mortal(HeVAL(entry));
+ HeVAL(entry) = &PL_sv_undef;
+ }
if (entry == xhv->xhv_eiter)
HvLAZYDEL_on(hv);
else
return Nullsv;
}
+/*
+=for apidoc hv_exists
+
+Returns a boolean indicating whether the specified hash key exists. The
+C<klen> is the length of the key.
+
+=cut
+*/
+
bool
-hv_exists(HV *hv, const char *key, U32 klen)
+Perl_hv_exists(pTHX_ HV *hv, const char *key, U32 klen)
{
register XPVHV* xhv;
register U32 hash;
}
#ifdef ENV_IS_CASELESS
else if (mg_find((SV*)hv,'E')) {
- sv = sv_2mortal(newSVpv(key,klen));
+ sv = sv_2mortal(newSVpvn(key,klen));
key = strupr(SvPVX(sv));
}
#endif
}
xhv = (XPVHV*)SvANY(hv);
+#ifndef DYNAMIC_ENV_FETCH
if (!xhv->xhv_array)
return 0;
+#endif
PERL_HASH(hash, key, klen);
+#ifdef DYNAMIC_ENV_FETCH
+ if (!xhv->xhv_array) entry = Null(HE*);
+ else
+#endif
entry = ((HE**)xhv->xhv_array)[hash & (I32) xhv->xhv_max];
for (; entry; entry = HeNEXT(entry)) {
if (HeHASH(entry) != hash) /* strings can't be equal */
continue;
return TRUE;
}
+#ifdef DYNAMIC_ENV_FETCH /* is it out there? */
+ if (HvNAME(hv) && strEQ(HvNAME(hv), ENV_HV_NAME)) {
+ unsigned long len;
+ char *env = PerlEnv_ENVgetenv_len(key,&len);
+ if (env) {
+ sv = newSVpvn(env,len);
+ SvTAINTED_on(sv);
+ (void)hv_store(hv,key,klen,sv,hash);
+ return TRUE;
+ }
+ }
+#endif
return FALSE;
}
+/*
+=for apidoc hv_exists_ent
+
+Returns a boolean indicating whether the specified hash key exists. C<hash>
+can be a valid precomputed hash value, or 0 to ask for it to be
+computed.
+
+=cut
+*/
+
bool
-hv_exists_ent(HV *hv, SV *keysv, U32 hash)
+Perl_hv_exists_ent(pTHX_ HV *hv, SV *keysv, U32 hash)
{
register XPVHV* xhv;
register char *key;
#ifdef ENV_IS_CASELESS
else if (mg_find((SV*)hv,'E')) {
key = SvPV(keysv, klen);
- keysv = sv_2mortal(newSVpv(key,klen));
+ keysv = sv_2mortal(newSVpvn(key,klen));
(void)strupr(SvPVX(keysv));
hash = 0;
}
}
xhv = (XPVHV*)SvANY(hv);
+#ifndef DYNAMIC_ENV_FETCH
if (!xhv->xhv_array)
return 0;
+#endif
key = SvPV(keysv, klen);
if (!hash)
PERL_HASH(hash, key, klen);
+#ifdef DYNAMIC_ENV_FETCH
+ if (!xhv->xhv_array) entry = Null(HE*);
+ else
+#endif
entry = ((HE**)xhv->xhv_array)[hash & (I32) xhv->xhv_max];
for (; entry; entry = HeNEXT(entry)) {
if (HeHASH(entry) != hash) /* strings can't be equal */
continue;
return TRUE;
}
+#ifdef DYNAMIC_ENV_FETCH /* is it out there? */
+ if (HvNAME(hv) && strEQ(HvNAME(hv), ENV_HV_NAME)) {
+ unsigned long len;
+ char *env = PerlEnv_ENVgetenv_len(key,&len);
+ if (env) {
+ sv = newSVpvn(env,len);
+ SvTAINTED_on(sv);
+ (void)hv_store_ent(hv,keysv,sv,hash);
+ return TRUE;
+ }
+ }
+#endif
return FALSE;
}
STATIC void
-hsplit(HV *hv)
+S_hsplit(pTHX_ HV *hv)
{
register XPVHV* xhv = (XPVHV*)SvANY(hv);
I32 oldsize = (I32) xhv->xhv_max + 1; /* sic(k) */
PL_nomemok = TRUE;
#if defined(STRANGE_MALLOC) || defined(MYMALLOC)
- Renew(a, ARRAY_ALLOC_BYTES(newsize), char);
+ Renew(a, PERL_HV_ARRAY_ALLOC_BYTES(newsize), char);
if (!a) {
PL_nomemok = FALSE;
return;
}
#else
#define MALLOC_OVERHEAD 16
- New(2, a, ARRAY_ALLOC_BYTES(newsize), char);
+ New(2, a, PERL_HV_ARRAY_ALLOC_BYTES(newsize), char);
if (!a) {
PL_nomemok = FALSE;
return;
}
Copy(xhv->xhv_array, a, oldsize * sizeof(HE*), char);
if (oldsize >= 64) {
- offer_nice_chunk(xhv->xhv_array, ARRAY_ALLOC_BYTES(oldsize));
+ offer_nice_chunk(xhv->xhv_array, PERL_HV_ARRAY_ALLOC_BYTES(oldsize));
}
else
Safefree(xhv->xhv_array);
}
void
-hv_ksplit(HV *hv, IV newmax)
+Perl_hv_ksplit(pTHX_ HV *hv, IV newmax)
{
register XPVHV* xhv = (XPVHV*)SvANY(hv);
I32 oldsize = (I32) xhv->xhv_max + 1; /* sic(k) */
if (a) {
PL_nomemok = TRUE;
#if defined(STRANGE_MALLOC) || defined(MYMALLOC)
- Renew(a, ARRAY_ALLOC_BYTES(newsize), char);
+ Renew(a, PERL_HV_ARRAY_ALLOC_BYTES(newsize), char);
if (!a) {
PL_nomemok = FALSE;
return;
}
#else
- New(2, a, ARRAY_ALLOC_BYTES(newsize), char);
+ New(2, a, PERL_HV_ARRAY_ALLOC_BYTES(newsize), char);
if (!a) {
PL_nomemok = FALSE;
return;
}
Copy(xhv->xhv_array, a, oldsize * sizeof(HE*), char);
if (oldsize >= 64) {
- offer_nice_chunk(xhv->xhv_array, ARRAY_ALLOC_BYTES(oldsize));
+ offer_nice_chunk(xhv->xhv_array, PERL_HV_ARRAY_ALLOC_BYTES(oldsize));
}
else
Safefree(xhv->xhv_array);
Zero(&a[oldsize * sizeof(HE*)], (newsize-oldsize) * sizeof(HE*), char); /* zero 2nd half*/
}
else {
- Newz(0, a, ARRAY_ALLOC_BYTES(newsize), char);
+ Newz(0, a, PERL_HV_ARRAY_ALLOC_BYTES(newsize), char);
}
xhv->xhv_max = --newsize;
xhv->xhv_array = a;
}
}
+/*
+=for apidoc newHV
+
+Creates a new HV. The reference count is set to 1.
+
+=cut
+*/
+
HV *
-newHV(void)
+Perl_newHV(pTHX)
{
register HV *hv;
register XPVHV* xhv;
}
HV *
-newHVhv(HV *ohv)
+Perl_newHVhv(pTHX_ HV *ohv)
{
register HV *hv;
STRLEN hv_max = ohv ? HvMAX(ohv) : 0;
/* Slow way */
hv_iterinit(ohv);
- while (entry = hv_iternext(ohv)) {
+ while ((entry = hv_iternext(ohv))) {
hv_store(hv, HeKEY(entry), HeKLEN(entry),
SvREFCNT_inc(HeVAL(entry)), HeHASH(entry));
}
}
void
-hv_free_ent(HV *hv, register HE *entry)
+Perl_hv_free_ent(pTHX_ HV *hv, register HE *entry)
{
SV *val;
unshare_hek(HeKEY_hek(entry));
else
Safefree(HeKEY_hek(entry));
- del_he(entry);
+ del_HE(entry);
}
void
-hv_delayfree_ent(HV *hv, register HE *entry)
+Perl_hv_delayfree_ent(pTHX_ HV *hv, register HE *entry)
{
if (!entry)
return;
unshare_hek(HeKEY_hek(entry));
else
Safefree(HeKEY_hek(entry));
- del_he(entry);
+ del_HE(entry);
}
+/*
+=for apidoc hv_clear
+
+Clears a hash, making it empty.
+
+=cut
+*/
+
void
-hv_clear(HV *hv)
+Perl_hv_clear(pTHX_ HV *hv)
{
register XPVHV* xhv;
if (!hv)
}
STATIC void
-hfreeentries(HV *hv)
+S_hfreeentries(pTHX_ HV *hv)
{
register HE **array;
register HE *entry;
(void)hv_iterinit(hv);
}
+/*
+=for apidoc hv_undef
+
+Undefines the hash.
+
+=cut
+*/
+
void
-hv_undef(HV *hv)
+Perl_hv_undef(pTHX_ HV *hv)
{
register XPVHV* xhv;
if (!hv)
mg_clear((SV*)hv);
}
+/*
+=for apidoc hv_iterinit
+
+Prepares a starting point to traverse a hash table. Returns the number of
+keys in the hash (i.e. the same as C<HvKEYS(tb)>). The return value is
+currently only meaningful for hashes without tie magic.
+
+NOTE: Before version 5.004_65, C<hv_iterinit> used to return the number of
+hash buckets that happen to be in use. If you still need that esoteric
+value, you can get it through the macro C<HvFILL(tb)>.
+
+=cut
+*/
+
I32
-hv_iterinit(HV *hv)
+Perl_hv_iterinit(pTHX_ HV *hv)
{
register XPVHV* xhv;
HE *entry;
if (!hv)
- croak("Bad hash");
+ Perl_croak(aTHX_ "Bad hash");
xhv = (XPVHV*)SvANY(hv);
entry = xhv->xhv_eiter;
-#ifdef DYNAMIC_ENV_FETCH /* set up %ENV for iteration */
- if (HvNAME(hv) && strEQ(HvNAME(hv), ENV_HV_NAME))
- prime_env_iter();
-#endif
if (entry && HvLAZYDEL(hv)) { /* was deleted earlier? */
HvLAZYDEL_off(hv);
hv_free_ent(hv, entry);
return xhv->xhv_keys; /* used to be xhv->xhv_fill before 5.004_65 */
}
+/*
+=for apidoc hv_iternext
+
+Returns entries from a hash iterator. See C<hv_iterinit>.
+
+=cut
+*/
+
HE *
-hv_iternext(HV *hv)
+Perl_hv_iternext(pTHX_ HV *hv)
{
register XPVHV* xhv;
register HE *entry;
MAGIC* mg;
if (!hv)
- croak("Bad hash");
+ Perl_croak(aTHX_ "Bad hash");
xhv = (XPVHV*)SvANY(hv);
oldentry = entry = xhv->xhv_eiter;
- if (mg = SvTIED_mg((SV*)hv, 'P')) {
+ if ((mg = SvTIED_mg((SV*)hv, 'P'))) {
SV *key = sv_newmortal();
if (entry) {
sv_setsv(key, HeSVKEY_force(entry));
char *k;
HEK *hek;
- xhv->xhv_eiter = entry = new_he(); /* one HE per MAGICAL hash */
+ xhv->xhv_eiter = entry = new_HE(); /* one HE per MAGICAL hash */
Zero(entry, 1, HE);
Newz(54, k, HEK_BASESIZE + sizeof(SV*), char);
hek = (HEK*)k;
if (HeVAL(entry))
SvREFCNT_dec(HeVAL(entry));
Safefree(HeKEY_hek(entry));
- del_he(entry);
+ del_HE(entry);
xhv->xhv_eiter = Null(HE*);
return Null(HE*);
}
+#ifdef DYNAMIC_ENV_FETCH /* set up %ENV for iteration */
+ if (!entry && HvNAME(hv) && strEQ(HvNAME(hv), ENV_HV_NAME))
+ prime_env_iter();
+#endif
if (!xhv->xhv_array)
- Newz(506,xhv->xhv_array, ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
+ Newz(506, xhv->xhv_array,
+ PERL_HV_ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
if (entry)
entry = HeNEXT(entry);
while (!entry) {
return entry;
}
+/*
+=for apidoc hv_iterkey
+
+Returns the key from the current position of the hash iterator. See
+C<hv_iterinit>.
+
+=cut
+*/
+
char *
-hv_iterkey(register HE *entry, I32 *retlen)
+Perl_hv_iterkey(pTHX_ register HE *entry, I32 *retlen)
{
if (HeKLEN(entry) == HEf_SVKEY) {
STRLEN len;
}
/* unlike hv_iterval(), this always returns a mortal copy of the key */
+/*
+=for apidoc hv_iterkeysv
+
+Returns the key as an C<SV*> from the current position of the hash
+iterator. The return value will always be a mortal copy of the key. Also
+see C<hv_iterinit>.
+
+=cut
+*/
+
SV *
-hv_iterkeysv(register HE *entry)
+Perl_hv_iterkeysv(pTHX_ register HE *entry)
{
if (HeKLEN(entry) == HEf_SVKEY)
return sv_mortalcopy(HeKEY_sv(entry));
else
- return sv_2mortal(newSVpv((HeKLEN(entry) ? HeKEY(entry) : ""),
+ return sv_2mortal(newSVpvn((HeKLEN(entry) ? HeKEY(entry) : ""),
HeKLEN(entry)));
}
+/*
+=for apidoc hv_iterval
+
+Returns the value from the current position of the hash iterator. See
+C<hv_iterkey>.
+
+=cut
+*/
+
SV *
-hv_iterval(HV *hv, register HE *entry)
+Perl_hv_iterval(pTHX_ HV *hv, register HE *entry)
{
if (SvRMAGICAL(hv)) {
if (mg_find((SV*)hv,'P')) {
return HeVAL(entry);
}
+/*
+=for apidoc hv_iternextsv
+
+Performs an C<hv_iternext>, C<hv_iterkey>, and C<hv_iterval> in one
+operation.
+
+=cut
+*/
+
SV *
-hv_iternextsv(HV *hv, char **key, I32 *retlen)
+Perl_hv_iternextsv(pTHX_ HV *hv, char **key, I32 *retlen)
{
HE *he;
if ( (he = hv_iternext(hv)) == NULL)
return hv_iterval(hv, he);
}
+/*
+=for apidoc hv_magic
+
+Adds magic to a hash. See C<sv_magic>.
+
+=cut
+*/
+
void
-hv_magic(HV *hv, GV *gv, int how)
+Perl_hv_magic(pTHX_ HV *hv, GV *gv, int how)
{
sv_magic((SV*)hv, (SV*)gv, how, Nullch, 0);
}
char*
-sharepvn(const char *sv, I32 len, U32 hash)
+Perl_sharepvn(pTHX_ const char *sv, I32 len, U32 hash)
{
return HEK_KEY(share_hek(sv, len, hash));
}
* len and hash must both be valid for str.
*/
void
-unsharepvn(const char *str, I32 len, U32 hash)
+Perl_unsharepvn(pTHX_ const char *str, I32 len, U32 hash)
{
register XPVHV* xhv;
register HE *entry;
if (i && !*oentry)
xhv->xhv_fill--;
Safefree(HeKEY_hek(entry));
- del_he(entry);
+ del_HE(entry);
--xhv->xhv_keys;
}
break;
}
UNLOCK_STRTAB_MUTEX;
- if (!found)
- warn("Attempt to free non-existent shared string");
+ {
+ dTHR;
+ if (!found && ckWARN_d(WARN_INTERNAL))
+ Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free non-existent shared string");
+ }
}
/* get a (constant) string ptr from the global string table
* len and hash must both be valid for str.
*/
HEK *
-share_hek(const char *str, I32 len, register U32 hash)
+Perl_share_hek(pTHX_ const char *str, I32 len, register U32 hash)
{
register XPVHV* xhv;
register HE *entry;
break;
}
if (!found) {
- entry = new_he();
+ entry = new_HE();
HeKEY_hek(entry) = save_hek(str, len, hash);
HeVAL(entry) = Nullsv;
HeNEXT(entry) = *oentry;
https://perl5.git.perl.org / perl5.git / blobdiff