/* hv.c
*
- * Copyright (c) 1991-1997, Larry Wall
+ * Copyright (c) 1991-1999, 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.
#ifndef PERL_OBJECT
static void hsplit _((HV *hv));
static void hfreeentries _((HV *hv));
-static HE* more_he _((void));
+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)
{
HE* he;
- if (he_root) {
- he = he_root;
- he_root = HeNEXT(he);
- return he;
- }
- return more_he();
+ LOCK_SV_MUTEX;
+ if (!PL_he_root)
+ more_he();
+ he = PL_he_root;
+ PL_he_root = HeNEXT(he);
+ UNLOCK_SV_MUTEX;
+ return he;
}
STATIC void
del_he(HE *p)
{
- HeNEXT(p) = (HE*)he_root;
- he_root = p;
+ LOCK_SV_MUTEX;
+ HeNEXT(p) = (HE*)PL_he_root;
+ PL_he_root = p;
+ UNLOCK_SV_MUTEX;
}
-STATIC HE*
+STATIC void
more_he(void)
{
register HE* he;
register HE* heend;
- New(54, he_root, 1008/sizeof(HE), HE);
- he = he_root;
+ New(54, PL_he_root, 1008/sizeof(HE), HE);
+ he = PL_he_root;
heend = &he[1008 / sizeof(HE) - 1];
while (he < heend) {
HeNEXT(he) = (HE*)(he + 1);
he++;
}
HeNEXT(he) = 0;
- return new_he();
}
STATIC HEK *
-save_hek(char *str, I32 len, U32 hash)
+save_hek(const char *str, I32 len, U32 hash)
{
char *k;
register HEK *hek;
* contains an SV* */
SV**
-hv_fetch(HV *hv, char *key, U32 klen, I32 lval)
+hv_fetch(HV *hv, const char *key, U32 klen, I32 lval)
{
register XPVHV* xhv;
register U32 hash;
dTHR;
sv = sv_newmortal();
mg_copy((SV*)hv, sv, key, klen);
- hv_fetch_sv = sv;
- return &hv_fetch_sv;
+ PL_hv_fetch_sv = sv;
+ return &PL_hv_fetch_sv;
}
#ifdef ENV_IS_CASELESS
else if (mg_find((SV*)hv,'E')) {
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, sizeof(HE*) * (xhv->xhv_max + 1), char);
+ Newz(503,xhv->xhv_array, 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 */
sv = sv_newmortal();
keysv = sv_2mortal(newSVsv(keysv));
mg_copy((SV*)hv, sv, (char*)keysv, HEf_SVKEY);
- if (!HeKEY_hek(&hv_fetch_ent_mh)) {
+ if (!HeKEY_hek(&PL_hv_fetch_ent_mh)) {
char *k;
New(54, k, HEK_BASESIZE + sizeof(SV*), char);
- HeKEY_hek(&hv_fetch_ent_mh) = (HEK*)k;
+ HeKEY_hek(&PL_hv_fetch_ent_mh) = (HEK*)k;
}
- HeSVKEY_set(&hv_fetch_ent_mh, keysv);
- HeVAL(&hv_fetch_ent_mh) = sv;
- return &hv_fetch_ent_mh;
+ HeSVKEY_set(&PL_hv_fetch_ent_mh, keysv);
+ HeVAL(&PL_hv_fetch_ent_mh) = sv;
+ return &PL_hv_fetch_ent_mh;
}
#ifdef ENV_IS_CASELESS
else if (mg_find((SV*)hv,'E')) {
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, sizeof(HE*) * (xhv->xhv_max + 1), char);
+ Newz(503,xhv->xhv_array, 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 */
}
SV**
-hv_store(HV *hv, char *key, U32 klen, SV *val, register U32 hash)
+hv_store(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, sizeof(HE*) * (xhv->xhv_max + 1), char);
+ Newz(505, xhv->xhv_array, ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
oentry = &((HE**)xhv->xhv_array)[hash & (I32) xhv->xhv_max];
i = 1;
bool needs_store;
hv_magic_check (hv, &needs_copy, &needs_store);
if (needs_copy) {
- bool save_taint = tainted;
- if (tainting)
- tainted = SvTAINTED(keysv);
+ bool save_taint = PL_tainted;
+ if (PL_tainting)
+ PL_tainted = SvTAINTED(keysv);
keysv = sv_2mortal(newSVsv(keysv));
mg_copy((SV*)hv, val, (char*)keysv, HEf_SVKEY);
TAINT_IF(save_taint);
#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, sizeof(HE*) * (xhv->xhv_max + 1), char);
+ Newz(505, xhv->xhv_array, ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
oentry = &((HE**)xhv->xhv_array)[hash & (I32) xhv->xhv_max];
i = 1;
}
SV *
-hv_delete(HV *hv, char *key, U32 klen, I32 flags)
+hv_delete(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
#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;
}
}
bool
-hv_exists(HV *hv, char *key, U32 klen)
+hv_exists(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;
}
#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;
}
register HE *entry;
register HE **oentry;
- nomemok = TRUE;
+ PL_nomemok = TRUE;
#if defined(STRANGE_MALLOC) || defined(MYMALLOC)
- Renew(a, newsize * sizeof(HE*), char);
+ Renew(a, ARRAY_ALLOC_BYTES(newsize), char);
if (!a) {
- nomemok = FALSE;
+ PL_nomemok = FALSE;
return;
}
#else
#define MALLOC_OVERHEAD 16
- New(2, a, newsize*sizeof(HE*) * 2 - MALLOC_OVERHEAD, char);
+ New(2, a, ARRAY_ALLOC_BYTES(newsize), char);
if (!a) {
- nomemok = FALSE;
+ PL_nomemok = FALSE;
return;
}
Copy(xhv->xhv_array, a, oldsize * sizeof(HE*), char);
if (oldsize >= 64) {
- offer_nice_chunk(xhv->xhv_array,
- oldsize * sizeof(HE*) * 2 - MALLOC_OVERHEAD);
+ offer_nice_chunk(xhv->xhv_array, ARRAY_ALLOC_BYTES(oldsize));
}
else
Safefree(xhv->xhv_array);
#endif
- nomemok = FALSE;
+ PL_nomemok = FALSE;
Zero(&a[oldsize * sizeof(HE*)], (newsize-oldsize) * sizeof(HE*), char); /* zero 2nd half*/
xhv->xhv_max = --newsize;
xhv->xhv_array = a;
a = xhv->xhv_array;
if (a) {
- nomemok = TRUE;
+ PL_nomemok = TRUE;
#if defined(STRANGE_MALLOC) || defined(MYMALLOC)
- Renew(a, newsize * sizeof(HE*), char);
+ Renew(a, ARRAY_ALLOC_BYTES(newsize), char);
if (!a) {
- nomemok = FALSE;
+ PL_nomemok = FALSE;
return;
}
#else
- New(2, a, newsize * sizeof(HE*) * 2 - MALLOC_OVERHEAD, char);
+ New(2, a, ARRAY_ALLOC_BYTES(newsize), char);
if (!a) {
- nomemok = FALSE;
+ PL_nomemok = FALSE;
return;
}
Copy(xhv->xhv_array, a, oldsize * sizeof(HE*), char);
if (oldsize >= 64) {
- offer_nice_chunk(xhv->xhv_array,
- oldsize * sizeof(HE*) * 2 - MALLOC_OVERHEAD);
+ offer_nice_chunk(xhv->xhv_array, ARRAY_ALLOC_BYTES(oldsize));
}
else
Safefree(xhv->xhv_array);
#endif
- nomemok = FALSE;
+ PL_nomemok = FALSE;
Zero(&a[oldsize * sizeof(HE*)], (newsize-oldsize) * sizeof(HE*), char); /* zero 2nd half*/
}
else {
-#if defined(STRANGE_MALLOC) || defined(MYMALLOC)
- Newz(0, a, newsize * sizeof(HE*), char);
-#else
- Newz(0, a, newsize * sizeof(HE*) * 2 - MALLOC_OVERHEAD, char);
-#endif
+ Newz(0, a, ARRAY_ALLOC_BYTES(newsize), char);
}
xhv->xhv_max = --newsize;
xhv->xhv_array = a;
newHVhv(HV *ohv)
{
register HV *hv;
- register XPVHV* xhv;
STRLEN hv_max = ohv ? HvMAX(ohv) : 0;
STRLEN hv_fill = ohv ? HvFILL(ohv) : 0;
hv = newHV();
while (hv_max && hv_max + 1 >= hv_fill * 2)
hv_max = hv_max / 2; /* Is always 2^n-1 */
- ((XPVHV*)SvANY(hv))->xhv_max = hv_max;
+ HvMAX(hv) = hv_max;
if (!hv_fill)
return hv;
#if 0
- if (!SvRMAGICAL(ohv) || !mg_find((SV*)ohv,'P')) {
+ if (! SvTIED_mg((SV*)ohv, 'P')) {
/* Quick way ???*/
}
else
HE *hv_eiter = HvEITER(ohv); /* current entry of iterator */
/* Slow way */
- hv_iterinit(hv);
+ hv_iterinit(ohv);
while (entry = hv_iternext(ohv)) {
hv_store(hv, HeKEY(entry), HeKLEN(entry),
SvREFCNT_inc(HeVAL(entry)), HeHASH(entry));
return;
val = HeVAL(entry);
if (val && isGV(val) && GvCVu(val) && HvNAME(hv))
- sub_generation++; /* may be deletion of method from stash */
+ PL_sub_generation++; /* may be deletion of method from stash */
SvREFCNT_dec(val);
if (HeKLEN(entry) == HEf_SVKEY) {
SvREFCNT_dec(HeKEY_sv(entry));
if (!entry)
return;
if (isGV(HeVAL(entry)) && GvCVu(HeVAL(entry)) && HvNAME(hv))
- sub_generation++; /* may be deletion of method from stash */
+ PL_sub_generation++; /* may be deletion of method from stash */
sv_2mortal(HeVAL(entry)); /* free between statements */
if (HeKLEN(entry) == HEf_SVKEY) {
sv_2mortal(HeKEY_sv(entry));
croak("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);
xhv = (XPVHV*)SvANY(hv);
oldentry = entry = xhv->xhv_eiter;
- if (SvRMAGICAL(hv) && (mg = mg_find((SV*)hv,'P'))) {
+ if (mg = SvTIED_mg((SV*)hv, 'P')) {
SV *key = sv_newmortal();
if (entry) {
sv_setsv(key, HeSVKEY_force(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, sizeof(HE*) * (xhv->xhv_max + 1), char);
+ Newz(506,xhv->xhv_array, ARRAY_ALLOC_BYTES(xhv->xhv_max + 1), char);
if (entry)
entry = HeNEXT(entry);
while (!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)));
}
}
char*
-sharepvn(char *sv, I32 len, U32 hash)
+sharepvn(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(char *str, I32 len, U32 hash)
+unsharepvn(const char *str, I32 len, U32 hash)
{
register XPVHV* xhv;
register HE *entry;
I32 found = 0;
/* what follows is the moral equivalent of:
- if ((Svp = hv_fetch(strtab, tmpsv, FALSE, hash))) {
+ if ((Svp = hv_fetch(PL_strtab, tmpsv, FALSE, hash))) {
if (--*Svp == Nullsv)
- hv_delete(strtab, str, len, G_DISCARD, hash);
+ hv_delete(PL_strtab, str, len, G_DISCARD, hash);
} */
- xhv = (XPVHV*)SvANY(strtab);
+ xhv = (XPVHV*)SvANY(PL_strtab);
/* assert(xhv_array != 0) */
+ LOCK_STRTAB_MUTEX;
oentry = &((HE**)xhv->xhv_array)[hash & (I32) xhv->xhv_max];
for (entry = *oentry; entry; i=0, oentry = &HeNEXT(entry), entry = *oentry) {
if (HeHASH(entry) != hash) /* strings can't be equal */
}
break;
}
+ UNLOCK_STRTAB_MUTEX;
if (!found)
warn("Attempt to free non-existent shared string");
* len and hash must both be valid for str.
*/
HEK *
-share_hek(char *str, I32 len, register U32 hash)
+share_hek(const char *str, I32 len, register U32 hash)
{
register XPVHV* xhv;
register HE *entry;
/* what follows is the moral equivalent of:
- if (!(Svp = hv_fetch(strtab, str, len, FALSE)))
- hv_store(strtab, str, len, Nullsv, hash);
+ if (!(Svp = hv_fetch(PL_strtab, str, len, FALSE)))
+ hv_store(PL_strtab, str, len, Nullsv, hash);
*/
- xhv = (XPVHV*)SvANY(strtab);
+ xhv = (XPVHV*)SvANY(PL_strtab);
/* assert(xhv_array != 0) */
+ LOCK_STRTAB_MUTEX;
oentry = &((HE**)xhv->xhv_array)[hash & (I32) xhv->xhv_max];
for (entry = *oentry; entry; i=0, entry = HeNEXT(entry)) {
if (HeHASH(entry) != hash) /* strings can't be equal */
if (i) { /* initial entry? */
++xhv->xhv_fill;
if (xhv->xhv_keys > xhv->xhv_max)
- hsplit(strtab);
+ hsplit(PL_strtab);
}
}
++HeVAL(entry); /* use value slot as REFCNT */
+ UNLOCK_STRTAB_MUTEX;
return HeKEY_hek(entry);
}