# endif
#endif
+#ifndef LT_WORKAROUND_REQUIRE_PROPAGATION
+# define LT_WORKAROUND_REQUIRE_PROPAGATION !LT_HAS_PERL(5, 10, 1)
+#endif
+
#ifndef HvNAME_get
# define HvNAME_get(H) HvNAME(H)
#endif
# define HvNAMELEN_get(H) strlen(HvNAME_get(H))
#endif
+#ifndef SvIS_FREED
+# define SvIS_FREED(sv) ((sv)->sv_flags == SVTYPEMASK)
+#endif
+
+/* ... Thread safety and multiplicity ...................................... */
+
+#ifndef LT_MULTIPLICITY
+# if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
+# define LT_MULTIPLICITY 1
+# else
+# define LT_MULTIPLICITY 0
+# endif
+#endif
+#if LT_MULTIPLICITY && !defined(tTHX)
+# define tTHX PerlInterpreter*
+#endif
+
+#if LT_MULTIPLICITY && defined(USE_ITHREADS) && defined(dMY_CXT) && defined(MY_CXT) && defined(START_MY_CXT) && defined(MY_CXT_INIT) && (defined(MY_CXT_CLONE) || defined(dMY_CXT_SV))
+# define LT_THREADSAFE 1
+# ifndef MY_CXT_CLONE
+# define MY_CXT_CLONE \
+ dMY_CXT_SV; \
+ my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \
+ Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \
+ sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
+# endif
+#else
+# define LT_THREADSAFE 0
+# undef dMY_CXT
+# define dMY_CXT dNOOP
+# undef MY_CXT
+# define MY_CXT lt_globaldata
+# undef START_MY_CXT
+# define START_MY_CXT STATIC my_cxt_t MY_CXT;
+# undef MY_CXT_INIT
+# define MY_CXT_INIT NOOP
+# undef MY_CXT_CLONE
+# define MY_CXT_CLONE NOOP
+# undef pMY_CXT
+# define pMY_CXT
+# undef pMY_CXT_
+# define pMY_CXT_
+# undef aMY_CXT
+# define aMY_CXT
+# undef aMY_CXT_
+# define aMY_CXT_
+#endif
+
/* --- Helpers ------------------------------------------------------------- */
-/* ... Hints ............................................................... */
+/* ... Thread-safe hints ................................................... */
+
+/* If any of those is true, we need to store the hint in a global table. */
+
+#if LT_THREADSAFE || LT_WORKAROUND_REQUIRE_PROPAGATION
+
+typedef struct {
+ SV *code;
+#if LT_WORKAROUND_REQUIRE_PROPAGATION
+ UV requires;
+#endif
+} lt_hint_t;
+
+#define PTABLE_NAME ptable_hints
+#define PTABLE_VAL_FREE(V) { lt_hint_t *h = (V); SvREFCNT_dec(h->code); PerlMemShared_free(h); }
+
+#define pPTBL pTHX
+#define pPTBL_ pTHX_
+#define aPTBL aTHX
+#define aPTBL_ aTHX_
+
+#include "ptable.h"
+
+#define ptable_hints_store(T, K, V) ptable_hints_store(aTHX_ (T), (K), (V))
+#define ptable_hints_free(T) ptable_hints_free(aTHX_ (T))
+
+#endif /* LT_THREADSAFE || LT_WORKAROUND_REQUIRE_PROPAGATION */
+
+/* ... Global data ......................................................... */
+
+#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
+
+typedef struct {
+#if LT_THREADSAFE || LT_WORKAROUND_REQUIRE_PROPAGATION
+ ptable *tbl; /* It really is a ptable_hints */
+#endif
+#if LT_THREADSAFE
+ tTHX owner;
+#endif
+ OP * (*pp_padsv_saved)(pTHX);
+} my_cxt_t;
+
+START_MY_CXT
+
+/* ... Cloning global data ................................................. */
+
+#if LT_THREADSAFE
+
+STATIC void lt_ptable_hints_clone(pTHX_ ptable_ent *ent, void *ud_) {
+ my_cxt_t *ud = ud_;
+ lt_hint_t *h1 = ent->val;
+ lt_hint_t *h2 = PerlMemShared_malloc(sizeof *h2);
+
+ *h2 = *h1;
+
+ if (ud->owner != aTHX) {
+ SV *val = h1->code;
+ CLONE_PARAMS param;
+ AV *stashes = (SvTYPE(val) == SVt_PVHV && HvNAME_get(val)) ? newAV() : NULL;
+ param.stashes = stashes;
+ param.flags = 0;
+ param.proto_perl = ud->owner;
+ h2->code = sv_dup(val, ¶m);
+ if (stashes) {
+ av_undef(stashes);
+ SvREFCNT_dec(stashes);
+ }
+ }
+
+ ptable_hints_store(ud->tbl, ent->key, h2);
+ SvREFCNT_inc(h2->code);
+}
+
+STATIC void lt_thread_cleanup(pTHX_ void *);
+
+STATIC void lt_thread_cleanup(pTHX_ void *ud) {
+ int *level = ud;
+
+ if (*level) {
+ *level = 0;
+ LEAVE;
+ SAVEDESTRUCTOR_X(lt_thread_cleanup, level);
+ ENTER;
+ } else {
+ dMY_CXT;
+ PerlMemShared_free(level);
+ ptable_hints_free(MY_CXT.tbl);
+ }
+}
+
+#endif /* LT_THREADSAFE */
+
+/* ... Hint tags ........................................................... */
+
+#if LT_THREADSAFE || LT_WORKAROUND_REQUIRE_PROPAGATION
+
+STATIC SV *lt_tag(pTHX_ SV *value) {
+#define lt_tag(V) lt_tag(aTHX_ (V))
+ lt_hint_t *h;
+ dMY_CXT;
+
+ value = SvOK(value) && SvROK(value) ? SvRV(value) : NULL;
+
+ h = PerlMemShared_malloc(sizeof *h);
+ h->code = SvREFCNT_inc(value);
+
+#if LT_WORKAROUND_REQUIRE_PROPAGATION
+ {
+ const PERL_SI *si;
+ UV requires = 0;
+
+ for (si = PL_curstackinfo; si; si = si->si_prev) {
+ I32 cxix;
+
+ for (cxix = si->si_cxix; cxix >= 0; --cxix) {
+ const PERL_CONTEXT *cx = si->si_cxstack + cxix;
+
+ if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE)
+ ++requires;
+ }
+ }
+
+ h->requires = requires;
+ }
+#endif
+
+ /* We only need for the key to be an unique tag for looking up the value later.
+ * Allocated memory provides convenient unique identifiers, so that's why we
+ * use the value pointer as the key itself. */
+ ptable_hints_store(MY_CXT.tbl, value, h);
+
+ return newSVuv(PTR2UV(value));
+}
+
+STATIC SV *lt_detag(pTHX_ const SV *hint) {
+#define lt_detag(H) lt_detag(aTHX_ (H))
+ lt_hint_t *h;
+ dMY_CXT;
+
+ if (!(hint && SvOK(hint) && SvIOK(hint)))
+ return NULL;
+
+ h = ptable_fetch(MY_CXT.tbl, INT2PTR(void *, SvUVX(hint)));
+
+#if LT_WORKAROUND_REQUIRE_PROPAGATION
+ {
+ const PERL_SI *si;
+ UV requires = 0;
+
+ for (si = PL_curstackinfo; si; si = si->si_prev) {
+ I32 cxix;
+
+ for (cxix = si->si_cxix; cxix >= 0; --cxix) {
+ const PERL_CONTEXT *cx = si->si_cxstack + cxix;
+
+ if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE
+ && ++requires > h->requires)
+ return NULL;
+ }
+ }
+ }
+#endif
+
+ return h->code;
+}
+
+#else
+
+STATIC SV *lt_tag(pTHX_ SV *value) {
+#define lt_tag(V) lt_tag(aTHX_ (V))
+ UV tag = 0;
+
+ if (SvOK(value) && SvROK(value)) {
+ value = SvRV(value);
+ SvREFCNT_inc(value);
+ tag = PTR2UV(value);
+ }
+
+ return newSVuv(tag);
+}
+
+#define lt_detag(H) (((H) && SvOK(H)) ? INT2PTR(SV *, SvUVX(H)) : NULL)
+
+#endif /* LT_THREADSAFE || LT_WORKAROUND_REQUIRE_PROPAGATION */
STATIC U32 lt_hash = 0;
STATIC SV *lt_hint(pTHX) {
#define lt_hint() lt_hint(aTHX)
- SV *id;
-#if LT_HAS_PERL(5, 10, 0)
- id = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
- NULL,
- __PACKAGE__, __PACKAGE_LEN__,
- 0,
- lt_hash);
+ SV *hint;
+#if LT_HAS_PERL(5, 9, 5)
+ hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
+ NULL,
+ __PACKAGE__, __PACKAGE_LEN__,
+ 0,
+ lt_hash);
#else
SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__, lt_hash);
if (!val)
return 0;
- id = *val;
+ hint = *val;
#endif
- return (id && SvOK(id)) ? id : NULL;
+ return lt_detag(hint);
}
/* ... op => info map ...................................................... */
+#define PTABLE_NAME ptable_map
#define PTABLE_VAL_FREE(V) PerlMemShared_free(V)
#include "ptable.h"
+/* PerlMemShared_free() needs the [ap]PTBLMS_? default values */
+#define ptable_map_store(T, K, V) ptable_map_store(aPTBLMS_ (T), (K), (V))
+
STATIC ptable *lt_op_map = NULL;
#ifdef USE_ITHREADS
OP *(*pp_padsv)(pTHX);
} lt_op_info;
-STATIC void lt_map_store(const OP *o, SV *orig_pkg, SV *type_pkg, SV *type_meth, OP *(*pp_padsv)(pTHX)) {
+STATIC void lt_map_store(pPTBLMS_ const OP *o, SV *orig_pkg, SV *type_pkg, SV *type_meth, OP *(*pp_padsv)(pTHX)) {
+#define lt_map_store(O, OP, TP, TM, PP) lt_map_store(aPTBLMS_ (O), (OP), (TP), (TM), (PP))
lt_op_info *oi;
#ifdef USE_ITHREADS
if (!(oi = ptable_fetch(lt_op_map, o))) {
oi = PerlMemShared_malloc(sizeof *oi);
- ptable_store(lt_op_map, o, oi);
+ ptable_map_store(lt_op_map, o, oi);
}
oi->orig_pkg = orig_pkg;
return val;
}
+STATIC void lt_map_delete(pTHX_ const OP *o) {
+#define lt_map_delete(O) lt_map_delete(aTHX_ (O))
+#ifdef USE_ITHREADS
+ MUTEX_LOCK(<_op_map_mutex);
+#endif
+
+ ptable_map_store(lt_op_map, o, NULL);
+
+#ifdef USE_ITHREADS
+ MUTEX_UNLOCK(<_op_map_mutex);
+#endif
+}
+
/* --- Hooks --------------------------------------------------------------- */
/* ... Our pp_padsv ........................................................ */
return CALL_FPTR(PL_ppaddr[OP_PADSV])(aTHX);
}
-STATIC OP *(*lt_pp_padsv_saved)(pTHX) = 0;
-
-STATIC void lt_pp_padsv_save(void) {
- if (lt_pp_padsv_saved)
+STATIC void lt_pp_padsv_save(pMY_CXT) {
+#define lt_pp_padsv_save() lt_pp_padsv_save(aMY_CXT)
+ if (MY_CXT.pp_padsv_saved)
return;
- lt_pp_padsv_saved = PL_ppaddr[OP_PADSV];
- PL_ppaddr[OP_PADSV] = lt_pp_padsv;
+ MY_CXT.pp_padsv_saved = PL_ppaddr[OP_PADSV];
+ PL_ppaddr[OP_PADSV] = lt_pp_padsv;
}
-STATIC void lt_pp_padsv_restore(OP *o) {
- if (!lt_pp_padsv_saved)
+STATIC void lt_pp_padsv_restore(pMY_CXT_ OP *o) {
+#define lt_pp_padsv_restore(O) lt_pp_padsv_restore(aMY_CXT_ (O))
+ OP *(*saved)(pTHX) = MY_CXT.pp_padsv_saved;
+
+ if (!saved)
return;
if (o->op_ppaddr == lt_pp_padsv)
- o->op_ppaddr = lt_pp_padsv_saved;
+ o->op_ppaddr = saved;
- PL_ppaddr[OP_PADSV] = lt_pp_padsv_saved;
- lt_pp_padsv_saved = 0;
+ PL_ppaddr[OP_PADSV] = saved;
+ MY_CXT.pp_padsv_saved = 0;
}
/* ... Our ck_pad{any,sv} .................................................. */
STATIC OP *lt_ck_padany(pTHX_ OP *o) {
HV *stash;
- SV *hint;
+ SV *code;
+ dMY_CXT;
lt_pp_padsv_restore(o);
o = CALL_FPTR(lt_old_ck_padany)(aTHX_ o);
stash = PL_in_my_stash;
- if (stash && (hint = lt_hint())) {
+ if (stash && (code = lt_hint())) {
SV *orig_pkg = newSVpvn(HvNAME_get(stash), HvNAMELEN_get(stash));
SV *orig_meth = lt_default_meth;
SV *type_pkg = NULL;
SV *type_meth = NULL;
- SV *code = INT2PTR(SV *, SvUVX(hint));
+ int items;
- SvREADONLY_on(orig_pkg);
+ dSP;
- if (code) {
- int items;
- dSP;
-
- ENTER;
- SAVETMPS;
-
- PUSHMARK(SP);
- EXTEND(SP, 2);
- PUSHs(orig_pkg);
- PUSHs(orig_meth);
- PUTBACK;
-
- items = call_sv(code, G_ARRAY);
+ SvREADONLY_on(orig_pkg);
- SPAGAIN;
- if (items > 2)
- croak(__PACKAGE__ " mangler should return zero, one or two scalars, but got %d", items);
- if (items == 0) {
- SvREFCNT_dec(orig_pkg);
- goto skip;
- } else {
- SV *rsv;
- if (items > 1) {
- rsv = POPs;
- if (SvOK(rsv)) {
- type_meth = newSVsv(rsv);
- SvREADONLY_on(type_meth);
- }
- }
+ ENTER;
+ SAVETMPS;
+
+ PUSHMARK(SP);
+ EXTEND(SP, 2);
+ PUSHs(orig_pkg);
+ PUSHs(orig_meth);
+ PUTBACK;
+
+ items = call_sv(code, G_ARRAY);
+
+ SPAGAIN;
+ if (items > 2)
+ croak(__PACKAGE__ " mangler should return zero, one or two scalars, but got %d", items);
+ if (items == 0) {
+ SvREFCNT_dec(orig_pkg);
+ goto skip;
+ } else {
+ SV *rsv;
+ if (items > 1) {
rsv = POPs;
if (SvOK(rsv)) {
- type_pkg = newSVsv(rsv);
- SvREADONLY_on(type_pkg);
+ type_meth = newSVsv(rsv);
+ SvREADONLY_on(type_meth);
}
}
- PUTBACK;
-
- FREETMPS;
- LEAVE;
+ rsv = POPs;
+ if (SvOK(rsv)) {
+ type_pkg = newSVsv(rsv);
+ SvREADONLY_on(type_pkg);
+ }
}
+ PUTBACK;
+
+ FREETMPS;
+ LEAVE;
if (!type_pkg) {
type_pkg = orig_pkg;
lt_pp_padsv_save();
- lt_map_store(o, orig_pkg, type_pkg, type_meth, lt_pp_padsv_saved);
+ lt_map_store(o, orig_pkg, type_pkg, type_meth, MY_CXT.pp_padsv_saved);
+ } else {
+skip:
+ lt_map_delete(o);
}
-skip:
return o;
}
STATIC OP *(*lt_old_ck_padsv)(pTHX_ OP *) = 0;
STATIC OP *lt_ck_padsv(pTHX_ OP *o) {
+ dMY_CXT;
+
lt_pp_padsv_restore(o);
+ lt_map_delete(o);
+
return CALL_FPTR(lt_old_ck_padsv)(aTHX_ o);
}
MODULE = Lexical::Types PACKAGE = Lexical::Types
-PROTOTYPES: DISABLE
+PROTOTYPES: ENABLE
BOOT:
{
if (!lt_initialized++) {
+ HV *stash;
+
+ MY_CXT_INIT;
+#if LT_THREADSAFE || LT_WORKAROUND_REQUIRE_PROPAGATION
+ MY_CXT.tbl = ptable_new();
+#endif
+#if LT_THREADSAFE
+ MY_CXT.owner = aTHX;
+#endif
+ MY_CXT.pp_padsv_saved = 0;
+
lt_op_map = ptable_new();
#ifdef USE_ITHREADS
MUTEX_INIT(<_op_map_mutex);
PL_check[OP_PADANY] = MEMBER_TO_FPTR(lt_ck_padany);
lt_old_ck_padsv = PL_check[OP_PADSV];
PL_check[OP_PADSV] = MEMBER_TO_FPTR(lt_ck_padsv);
+
+ stash = gv_stashpvn(__PACKAGE__, __PACKAGE_LEN__, 1);
+ newCONSTSUB(stash, "LT_THREADSAFE", newSVuv(LT_THREADSAFE));
}
}
-SV *_tag(SV *ref)
+#if LT_THREADSAFE
+
+void
+CLONE(...)
+PROTOTYPE: DISABLE
PREINIT:
- SV *ret;
+ ptable *t;
+ int *level;
CODE:
- if (SvOK(ref) && SvROK(ref)) {
- SV *sv = SvRV(ref);
- SvREFCNT_inc(sv);
- ret = newSVuv(PTR2UV(sv));
- } else {
- ret = newSVuv(0);
+ {
+ my_cxt_t ud;
+ dMY_CXT;
+ ud.tbl = t = ptable_new();
+ ud.owner = MY_CXT.owner;
+ ptable_walk(MY_CXT.tbl, lt_ptable_hints_clone, &ud);
+ }
+ {
+ MY_CXT_CLONE;
+ MY_CXT.tbl = t;
+ MY_CXT.owner = aTHX;
+ MY_CXT.pp_padsv_saved = 0;
+ }
+ {
+ level = PerlMemShared_malloc(sizeof *level);
+ *level = 1;
+ LEAVE;
+ SAVEDESTRUCTOR_X(lt_thread_cleanup, level);
+ ENTER;
}
- RETVAL = ret;
+
+#endif
+
+SV *
+_tag(SV *value)
+PROTOTYPE: $
+CODE:
+ RETVAL = lt_tag(value);
OUTPUT:
RETVAL
projects / perl / modules / Lexical-Types.git / blobdiff