X-Git-Url: http://git.vpit.fr/?a=blobdiff_plain;f=Types.xs;h=bcf5fa15c9ac6937ac4e74347ff1a0b1b64631e3;hb=6e9765def6efaf02330bf276fc8006e13769d035;hp=60f499c19274d4f00531015a4518717758adc096;hpb=77c47109071d7fa2e5e648684ab843487196cada;p=perl%2Fmodules%2FLexical-Types.git diff --git a/Types.xs b/Types.xs index 60f499c..bcf5fa1 100644 --- a/Types.xs +++ b/Types.xs @@ -31,36 +31,182 @@ # 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 +#endif + /* --- Helpers ------------------------------------------------------------- */ -/* ... Hints ............................................................... */ +/* ... Thread-safe hints ................................................... */ + +#if LT_THREADSAFE + +#define PTABLE_NAME ptable_hints +#define PTABLE_VAL_FREE(V) if ((V) && !SvIS_FREED((SV *) (V))) SvREFCNT_dec(V) + +#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)) + +#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION + +typedef struct { + ptable *tbl; + tTHX owner; +} my_cxt_t; + +START_MY_CXT + +STATIC void lt_ptable_hints_clone(pTHX_ ptable_ent *ent, void *ud_) { + my_cxt_t *ud = ud_; + SV *val = ent->val; + + if (ud->owner != aTHX) { + 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; + val = sv_dup(val, ¶m); + if (stashes) { + av_undef(stashes); + SvREFCNT_dec(stashes); + } + } + + ptable_hints_store(ud->tbl, ent->key, val); + SvREFCNT_inc(val); +} + +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); + } +} + +STATIC SV *lt_tag(pTHX_ SV *value) { +#define lt_tag(V) lt_tag(aTHX_ (V)) + dMY_CXT; + + value = SvOK(value) && SvROK(value) ? SvRV(value) : NULL; + /* 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, value); + SvREFCNT_inc(value); + + return newSVuv(PTR2UV(value)); +} + +STATIC SV *lt_detag(pTHX_ const SV *hint) { +#define lt_detag(H) lt_detag(aTHX_ (H)) + void *tag; + SV *value; + + if (!hint || !SvOK(hint) || !SvIOK(hint)) + croak("Wrong hint"); + + tag = INT2PTR(void *, SvIVX(hint)); + { + dMY_CXT; + value = ptable_fetch(MY_CXT.tbl, tag); + } + + return value; +} + +#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) INT2PTR(SV *, SvUVX(H)) + +#endif /* LT_THREADSAFE */ 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 (hint && SvOK(hint)) ? hint : NULL; } /* ... 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 @@ -74,8 +220,8 @@ typedef struct { OP *(*pp_padsv)(pTHX); } lt_op_info; -STATIC void lt_map_store(pPTABLE_ 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(aPTABLE_ (O), (OP), (TP), (TM), (PP)) +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 @@ -84,7 +230,7 @@ STATIC void lt_map_store(pPTABLE_ const OP *o, SV *orig_pkg, SV *type_pkg, SV *t 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; @@ -117,6 +263,19 @@ STATIC const lt_op_info *lt_map_fetch(const OP *o, lt_op_info *oi) { 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 ........................................................ */ @@ -215,7 +374,7 @@ STATIC OP *lt_ck_padany(pTHX_ OP *o) { SV *orig_meth = lt_default_meth; SV *type_pkg = NULL; SV *type_meth = NULL; - SV *code = INT2PTR(SV *, SvUVX(hint)); + SV *code = lt_detag(hint); SvREADONLY_on(orig_pkg); @@ -274,9 +433,11 @@ STATIC OP *lt_ck_padany(pTHX_ OP *o) { lt_pp_padsv_save(); lt_map_store(o, orig_pkg, type_pkg, type_meth, lt_pp_padsv_saved); + } else { +skip: + lt_map_delete(o); } -skip: return o; } @@ -285,6 +446,8 @@ STATIC OP *(*lt_old_ck_padsv)(pTHX_ OP *) = 0; STATIC OP *lt_ck_padsv(pTHX_ OP *o) { lt_pp_padsv_restore(o); + lt_map_delete(o); + return CALL_FPTR(lt_old_ck_padsv)(aTHX_ o); } @@ -294,11 +457,18 @@ STATIC U32 lt_initialized = 0; MODULE = Lexical::Types PACKAGE = Lexical::Types -PROTOTYPES: DISABLE +PROTOTYPES: ENABLE BOOT: { if (!lt_initialized++) { + HV *stash; +#if LT_THREADSAFE + MY_CXT_INIT; + MY_CXT.tbl = ptable_new(); + MY_CXT.owner = aTHX; +#endif + lt_op_map = ptable_new(); #ifdef USE_ITHREADS MUTEX_INIT(<_op_map_mutex); @@ -313,20 +483,47 @@ BOOT: 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; + } + { + 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