From: Vincent Pit Date: Wed, 4 Nov 2015 13:40:40 +0000 (-0200) Subject: The Big Boilerplate Factorization X-Git-Tag: v0.11~16 X-Git-Url: http://git.vpit.fr/?p=perl%2Fmodules%2Fre-engine-Plugin.git;a=commitdiff_plain;h=4c4a1920feccc332a57cea1bdf42ed240fb65deb;hp=e02ec00bb493de1c7edf6bd1ebeb4c8fd2a40213 The Big Boilerplate Factorization --- diff --git a/MANIFEST b/MANIFEST index db23f08..4fc5bf7 100644 --- a/MANIFEST +++ b/MANIFEST @@ -8,7 +8,6 @@ Plugin.pm Plugin.pod Plugin.xs README -ptable.h t/00-compile.t t/10-usage/basic.pm t/10-usage/basic.t @@ -38,3 +37,9 @@ t/60-taint/rx.t t/60-taint/util.t t/70-threads/threads.t typemap +xsh/caps.h +xsh/debug.h +xsh/hints.h +xsh/ptable.h +xsh/threads.h +xsh/util.h diff --git a/Makefile.PL b/Makefile.PL index dc624de..05a4878 100644 --- a/Makefile.PL +++ b/Makefile.PL @@ -8,7 +8,7 @@ my @DEFINES; # Fork emulation got "fixed" in 5.10.1 if ($^O eq 'MSWin32' && "$]" < 5.010_001) { - push @DEFINES, '-DREP_FORKSAFE=0'; + push @DEFINES, '-DXSH_FORKSAFE=0'; } @DEFINES = (DEFINE => join ' ', @DEFINES) if @DEFINES; diff --git a/Plugin.xs b/Plugin.xs index b4db0bd..d19fc46 100644 --- a/Plugin.xs +++ b/Plugin.xs @@ -6,166 +6,19 @@ #include "perl.h" #include "XSUB.h" -#define __PACKAGE__ "re::engine::Plugin" -#define __PACKAGE_LEN__ (sizeof(__PACKAGE__)-1) - -#define REP_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S)))))) +/* --- Helpers ------------------------------------------------------------- */ -#ifndef REP_WORKAROUND_REQUIRE_PROPAGATION -# define REP_WORKAROUND_REQUIRE_PROPAGATION !REP_HAS_PERL(5, 10, 1) -#endif +#define XSH_PACKAGE "re::engine::Plugin" -/* ... Thread safety and multiplicity ...................................... */ +#include "xsh/caps.h" +#include "xsh/util.h" -/* Safe unless stated otherwise in Makefile.PL */ -#ifndef REP_FORKSAFE -# define REP_FORKSAFE 1 -#endif - -#ifndef REP_MULTIPLICITY -# if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT) -# define REP_MULTIPLICITY 1 -# else -# define REP_MULTIPLICITY 0 -# endif -#endif -#if REP_MULTIPLICITY && !defined(tTHX) -# define tTHX PerlInterpreter* -#endif - -#if REP_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 REP_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 REP_THREADSAFE 0 -# undef dMY_CXT -# define dMY_CXT dNOOP -# undef MY_CXT -# define MY_CXT rep_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 -#endif - -/* --- Helpers ------------------------------------------------------------- */ - -/* ... Thread-safe hints ................................................... */ +/* ... Lexical hints ....................................................... */ typedef struct { SV *comp; SV *exec; -#if REP_WORKAROUND_REQUIRE_PROPAGATION - IV require_tag; -#endif -} rep_hint_t; - -#if REP_THREADSAFE - -#define PTABLE_VAL_FREE(V) { \ - rep_hint_t *h = (V); \ - SvREFCNT_dec(h->comp); \ - SvREFCNT_dec(h->exec); \ - PerlMemShared_free(h); \ -} - -#define pPTBL pTHX -#define pPTBL_ pTHX_ -#define aPTBL aTHX -#define aPTBL_ aTHX_ - -#include "ptable.h" - -#define ptable_store(T, K, V) ptable_store(aTHX_ (T), (K), (V)) -#define ptable_free(T) ptable_free(aTHX_ (T)) - -#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION - -typedef struct { - ptable *tbl; - tTHX owner; -} my_cxt_t; - -START_MY_CXT - -typedef struct { - ptable *tbl; -#if REP_HAS_PERL(5, 13, 2) - CLONE_PARAMS *params; -#else - CLONE_PARAMS params; -#endif -} rep_ptable_clone_ud; - -#if REP_HAS_PERL(5, 13, 2) -# define rep_ptable_clone_ud_init(U, T, O) \ - (U).tbl = (T); \ - (U).params = Perl_clone_params_new((O), aTHX) -# define rep_ptable_clone_ud_deinit(U) Perl_clone_params_del((U).params) -# define rep_dup_inc(S, U) SvREFCNT_inc(sv_dup((S), (U)->params)) -#else -# define rep_ptable_clone_ud_init(U, T, O) \ - (U).tbl = (T); \ - (U).params.stashes = newAV(); \ - (U).params.flags = 0; \ - (U).params.proto_perl = (O) -# define rep_ptable_clone_ud_deinit(U) SvREFCNT_dec((U).params.stashes) -# define rep_dup_inc(S, U) SvREFCNT_inc(sv_dup((S), &((U)->params))) -#endif - -STATIC void rep_ptable_clone(pTHX_ ptable_ent *ent, void *ud_) { - rep_ptable_clone_ud *ud = ud_; - rep_hint_t *h1 = ent->val; - rep_hint_t *h2; - - h2 = PerlMemShared_malloc(sizeof *h2); - h2->comp = rep_dup_inc(h1->comp, ud); - h2->exec = rep_dup_inc(h1->exec, ud); -#if REP_WORKAROUND_REQUIRE_PROPAGATION - h2->require_tag = PTR2IV(rep_dup_inc(INT2PTR(SV *, h1->require_tag), ud)); -#endif - - ptable_store(ud->tbl, ent->key, h2); -} - -STATIC void rep_thread_cleanup(pTHX_ void *ud) { - dMY_CXT; - - ptable_free(MY_CXT.tbl); -} - -STATIC int rep_endav_free(pTHX_ SV *sv, MAGIC *mg) { - SAVEDESTRUCTOR_X(rep_thread_cleanup, NULL); - - return 0; -} - -STATIC MGVTBL rep_endav_vtbl = { - 0, - 0, - 0, - 0, - rep_endav_free -#if MGf_COPY - , 0 -#endif -#if MGf_DUP - , 0 -#endif -#if MGf_LOCAL - , 0 -#endif -}; - -#endif /* REP_THREADSAFE */ +} xsh_hints_user_t; STATIC SV *rep_validate_callback(SV *code) { if (!SvROK(code)) @@ -178,119 +31,47 @@ STATIC SV *rep_validate_callback(SV *code) { return SvREFCNT_inc_simple_NN(code); } -#if REP_WORKAROUND_REQUIRE_PROPAGATION -STATIC IV rep_require_tag(pTHX) { -#define rep_require_tag() rep_require_tag(aTHX) - const CV *cv, *outside; - - cv = PL_compcv; - - if (!cv) { - /* If for some reason the pragma is operational at run-time, try to discover - * the current cv in use. */ - const PERL_SI *si; - - 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; - - switch (CxTYPE(cx)) { - case CXt_SUB: - case CXt_FORMAT: - /* The propagation workaround is only needed up to 5.10.0 and at that - * time format and sub contexts were still identical. And even later the - * cv members offsets should have been kept the same. */ - cv = cx->blk_sub.cv; - goto get_enclosing_cv; - case CXt_EVAL: - cv = cx->blk_eval.cv; - goto get_enclosing_cv; - default: - break; - } - } - } +static void xsh_hints_user_init(pTHX_ xsh_hints_user_t *hv, xsh_hints_user_t *v) { + hv->comp = rep_validate_callback(v->comp); + hv->exec = rep_validate_callback(v->exec); - cv = PL_main_cv; - } + return; +} -get_enclosing_cv: - for (outside = CvOUTSIDE(cv); outside; outside = CvOUTSIDE(cv)) - cv = outside; +#if XSH_THREADSAFE - return PTR2IV(cv); -} -#endif /* REP_WORKAROUND_REQUIRE_PROPAGATION */ - -STATIC SV *rep_tag(pTHX_ SV *comp, SV *exec) { -#define rep_tag(C, E) rep_tag(aTHX_ (C), (E)) - rep_hint_t *h; - - h = PerlMemShared_malloc(sizeof *h); - h->comp = rep_validate_callback(comp); - h->exec = rep_validate_callback(exec); -#if REP_WORKAROUND_REQUIRE_PROPAGATION - h->require_tag = rep_require_tag(); -#endif /* REP_WORKAROUND_REQUIRE_PROPAGATION */ - -#if REP_THREADSAFE - { - dMY_CXT; - /* 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 hint as the key itself. */ - ptable_store(MY_CXT.tbl, h, h); - } -#endif /* REP_THREADSAFE */ - - return newSViv(PTR2IV(h)); +static void xsh_hints_user_clone(pTHX_ xsh_hints_user_t *nv, xsh_hints_user_t *ov, CLONE_PARAMS *params) { + nv->comp = xsh_dup_inc(ov->comp, params); + nv->exec = xsh_dup_inc(ov->exec, params); + + return; } -STATIC const rep_hint_t *rep_detag(pTHX_ const SV *hint) { -#define rep_detag(H) rep_detag(aTHX_ (H)) - rep_hint_t *h; +#endif /* XSH_THREADSAFE */ - if (!(hint && SvIOK(hint))) - return NULL; +static void xsh_hints_user_deinit(pTHX_ xsh_hints_user_t *hv) { + SvREFCNT_dec(hv->comp); + SvREFCNT_dec(hv->exec); - h = INT2PTR(rep_hint_t *, SvIVX(hint)); -#if REP_THREADSAFE - { - dMY_CXT; - h = ptable_fetch(MY_CXT.tbl, h); - } -#endif /* REP_THREADSAFE */ + return; +} -#if REP_WORKAROUND_REQUIRE_PROPAGATION - if (rep_require_tag() != h->require_tag) - return NULL; -#endif /* REP_WORKAROUND_REQUIRE_PROPAGATION */ +#define rep_hint() xsh_hints_detag(xsh_hints_fetch()) - return h; -} +#define XSH_HINTS_TYPE_USER 1 +#define XSH_HINTS_ONLY_COMPILE_TIME 0 -STATIC U32 rep_hash = 0; +#include "xsh/hints.h" -STATIC const rep_hint_t *rep_hint(pTHX) { -#define rep_hint() rep_hint(aTHX) - SV *hint; +/* ... Thread-local storage ................................................ */ -#ifdef cop_hints_fetch_pvn - hint = cop_hints_fetch_pvn(PL_curcop, - __PACKAGE__, __PACKAGE_LEN__, rep_hash, 0); -#else - /* We already require 5.9.5 for the regexp engine API. */ - hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, - NULL, - __PACKAGE__, __PACKAGE_LEN__, - 0, - rep_hash); -#endif +#define XSH_THREADS_USER_CONTEXT 0 +#define XSH_THREADS_USER_LOCAL_SETUP 0 +#define XSH_THREADS_USER_LOCAL_TEARDOWN 0 +#define XSH_THREADS_USER_GLOBAL_TEARDOWN 0 +#define XSH_THREADS_COMPILE_TIME_PROTECTION 0 - return rep_detag(hint); -} +#include "xsh/threads.h" /* --- Custom regexp engine ------------------------------------------------ */ @@ -308,7 +89,7 @@ STATIC const rep_hint_t *rep_hint(pTHX) { Perl_croak(aTHX_ "Not an object"); \ } -#if REP_HAS_PERL(5, 19, 4) +#if XSH_HAS_PERL(5, 19, 4) # define REP_ENG_EXEC_MINEND_TYPE SSize_t #else # define REP_ENG_EXEC_MINEND_TYPE I32 @@ -316,14 +97,14 @@ STATIC const rep_hint_t *rep_hint(pTHX) { START_EXTERN_C EXTERN_C const regexp_engine engine_plugin; -#if REP_HAS_PERL(5, 11, 0) +#if XSH_HAS_PERL(5, 11, 0) EXTERN_C REGEXP * Plugin_comp(pTHX_ SV * const, U32); #else EXTERN_C REGEXP * Plugin_comp(pTHX_ const SV * const, const U32); #endif EXTERN_C I32 Plugin_exec(pTHX_ REGEXP * const, char *, char *, char *, REP_ENG_EXEC_MINEND_TYPE, SV *, void *, U32); -#if REP_HAS_PERL(5, 19, 1) +#if XSH_HAS_PERL(5, 19, 1) EXTERN_C char * Plugin_intuit(pTHX_ REGEXP * const, SV *, const char * const, char *, char *, U32, re_scream_pos_data *); #else @@ -367,7 +148,7 @@ const regexp_engine engine_plugin = { #if defined(USE_ITHREADS) , Plugin_dupe #endif -#if REP_HAS_PERL(5, 17, 0) +#if XSH_HAS_PERL(5, 17, 0) , 0 #endif }; @@ -396,7 +177,7 @@ typedef struct replug { SV * cb_num_capture_buff_LENGTH; } *re__engine__Plugin; -#if REP_HAS_PERL(5, 11, 0) +#if XSH_HAS_PERL(5, 11, 0) # define rxREGEXP(RX) (SvANY(RX)) # define newREGEXP(RX) ((RX) = ((REGEXP*) newSV_type(SVt_REGEXP))) #else @@ -405,7 +186,7 @@ typedef struct replug { #endif REGEXP * -#if REP_HAS_PERL(5, 11, 0) +#if XSH_HAS_PERL(5, 11, 0) Plugin_comp(pTHX_ SV * const pattern, U32 flags) #else Plugin_comp(pTHX_ const SV * const pattern, const U32 flags) @@ -416,7 +197,7 @@ Plugin_comp(pTHX_ const SV * const pattern, const U32 flags) REGEXP *RX; re__engine__Plugin re; - const rep_hint_t *h; + const xsh_hints_user_t *h; STRLEN plen; char *pbuf; @@ -444,7 +225,7 @@ Plugin_comp(pTHX_ const SV * const pattern, const U32 flags) rx->extflags = flags; /* Flags for perl to use */ rx->engine = RE_ENGINE_PLUGIN; /* Compile to use this engine */ -#if !REP_HAS_PERL(5, 11, 0) +#if !XSH_HAS_PERL(5, 11, 0) rx->refcnt = 1; /* Refcount so we won't be destroyed */ /* Precompiled pattern for pp_regcomp to use */ @@ -551,7 +332,7 @@ Plugin_exec(pTHX_ REGEXP * const RX, char *stringarg, char *strend, } char * -#if REP_HAS_PERL(5, 19, 1) +#if XSH_HAS_PERL(5, 19, 1) Plugin_intuit(pTHX_ REGEXP * const RX, SV *sv, const char * const strbeg, char *strpos, char *strend, U32 flags, re_scream_pos_data *data) #else @@ -561,7 +342,7 @@ Plugin_intuit(pTHX_ REGEXP * const RX, SV *sv, char *strpos, { PERL_UNUSED_ARG(RX); PERL_UNUSED_ARG(sv); -#if REP_HAS_PERL(5, 19, 1) +#if XSH_HAS_PERL(5, 19, 1) PERL_UNUSED_ARG(strbeg); #endif PERL_UNUSED_ARG(strpos); @@ -766,46 +547,16 @@ Plugin_package(pTHX_ REGEXP * const RX) return newSVpvs("re::engine::Plugin"); } -#if REP_THREADSAFE - -STATIC U32 rep_initialized = 0; - -STATIC void rep_teardown(pTHX_ void *root) { - if (!rep_initialized || aTHX != root) - return; - - { - dMY_CXT; - ptable_free(MY_CXT.tbl); - } - - rep_initialized = 0; -} +static void xsh_user_global_setup(pTHX) { + HV *stash; -STATIC void rep_setup(pTHX) { -#define rep_setup() rep_setup(aTHX) - if (rep_initialized) - return; + stash = gv_stashpvn(XSH_PACKAGE, XSH_PACKAGE_LEN, 1); + newCONSTSUB(stash, "REP_THREADSAFE", newSVuv(XSH_THREADSAFE)); + newCONSTSUB(stash, "REP_FORKSAFE", newSVuv(XSH_FORKSAFE)); - { - MY_CXT_INIT; - MY_CXT.tbl = ptable_new(); - MY_CXT.owner = aTHX; - } - - call_atexit(rep_teardown, aTHX); - - rep_initialized = 1; + return; } -#else /* REP_THREADSAFE */ - -#define rep_setup() - -#endif /* !REP_THREADSAFE */ - -STATIC U32 rep_booted = 0; - /* --- XS ------------------------------------------------------------------ */ MODULE = re::engine::Plugin PACKAGE = re::engine::Plugin @@ -814,61 +565,18 @@ PROTOTYPES: DISABLE BOOT: { - if (!rep_booted++) { - HV *stash; - - PERL_HASH(rep_hash, __PACKAGE__, __PACKAGE_LEN__); - - stash = gv_stashpvn(__PACKAGE__, __PACKAGE_LEN__, 1); - newCONSTSUB(stash, "REP_THREADSAFE", newSVuv(REP_THREADSAFE)); - newCONSTSUB(stash, "REP_FORKSAFE", newSVuv(REP_FORKSAFE)); - } - - rep_setup(); + xsh_setup(); } -#if REP_THREADSAFE +#if XSH_THREADSAFE void CLONE(...) -PREINIT: - ptable *t; - GV *gv; -PPCODE: - { - rep_ptable_clone_ud ud; - dMY_CXT; - - t = ptable_new(); - rep_ptable_clone_ud_init(ud, t, MY_CXT.owner); - ptable_walk(MY_CXT.tbl, rep_ptable_clone, &ud); - rep_ptable_clone_ud_deinit(ud); - } - { - MY_CXT_CLONE; - MY_CXT.tbl = t; - MY_CXT.owner = aTHX; - } - gv = gv_fetchpv(__PACKAGE__ "::_THREAD_CLEANUP", 0, SVt_PVCV); - if (gv) { - CV *cv = GvCV(gv); - if (!PL_endav) - PL_endav = newAV(); - SvREFCNT_inc(cv); - if (!av_store(PL_endav, av_len(PL_endav) + 1, (SV *) cv)) - SvREFCNT_dec(cv); - sv_magicext((SV *) PL_endav, NULL, PERL_MAGIC_ext, &rep_endav_vtbl, NULL, 0); - } - XSRETURN(0); - -void -_THREAD_CLEANUP(...) -PROTOTYPE: DISABLE PPCODE: - rep_thread_cleanup(aTHX_ NULL); + xsh_clone(); XSRETURN(0); -#endif /* REP_THREADSAFE */ +#endif /* XSH_THREADSAFE */ void pattern(re::engine::Plugin self, ...) @@ -998,8 +706,12 @@ PPCODE: SV * _tag(SV *comp, SV *exec) +PREINIT: + xsh_hints_user_t arg; CODE: - RETVAL = rep_tag(comp, exec); + arg.comp = comp; + arg.exec = exec; + RETVAL = xsh_hints_tag(&arg); OUTPUT: RETVAL diff --git a/ptable.h b/ptable.h deleted file mode 100644 index 29cfb76..0000000 --- a/ptable.h +++ /dev/null @@ -1,251 +0,0 @@ -/* This file is part of the re::engine::Plugin Perl module. - * See http://search.cpan.org/dist/re-engine-Plugin/ */ - -/* This is a pointer table implementation essentially copied from the ptr_table - * implementation in perl's sv.c, except that it has been modified to use memory - * shared across threads. - * Copyright goes to the original authors, bug reports to me. */ - -/* This header is designed to be included several times with different - * definitions for PTABLE_NAME and PTABLE_VAL_FREE(). */ - -#undef VOID2 -#ifdef __cplusplus -# define VOID2(T, P) static_cast(P) -#else -# define VOID2(T, P) (P) -#endif - -#undef pPTBLMS -#undef pPTBLMS_ -#undef aPTBLMS -#undef aPTBLMS_ - -/* Context for PerlMemShared_* functions */ - -#ifdef PERL_IMPLICIT_SYS -# define pPTBLMS pTHX -# define pPTBLMS_ pTHX_ -# define aPTBLMS aTHX -# define aPTBLMS_ aTHX_ -#else -# define pPTBLMS void -# define pPTBLMS_ -# define aPTBLMS -# define aPTBLMS_ -#endif - -#ifndef pPTBL -# define pPTBL pPTBLMS -#endif -#ifndef pPTBL_ -# define pPTBL_ pPTBLMS_ -#endif -#ifndef aPTBL -# define aPTBL aPTBLMS -#endif -#ifndef aPTBL_ -# define aPTBL_ aPTBLMS_ -#endif - -#ifndef PTABLE_NAME -# define PTABLE_NAME ptable -#endif - -#ifndef PTABLE_VAL_FREE -# define PTABLE_VAL_FREE(V) -#endif - -#ifndef PTABLE_JOIN -# define PTABLE_PASTE(A, B) A ## B -# define PTABLE_JOIN(A, B) PTABLE_PASTE(A, B) -#endif - -#ifndef PTABLE_PREFIX -# define PTABLE_PREFIX(X) PTABLE_JOIN(PTABLE_NAME, X) -#endif - -#ifndef ptable_ent -typedef struct ptable_ent { - struct ptable_ent *next; - const void * key; - void * val; -} ptable_ent; -#define ptable_ent ptable_ent -#endif /* !ptable_ent */ - -#ifndef ptable -typedef struct ptable { - ptable_ent **ary; - size_t max; - size_t items; -} ptable; -#define ptable ptable -#endif /* !ptable */ - -#ifndef ptable_new -STATIC ptable *ptable_new(pPTBLMS) { -#define ptable_new() ptable_new(aPTBLMS) - ptable *t = VOID2(ptable *, PerlMemShared_malloc(sizeof *t)); - t->max = 15; - t->items = 0; - t->ary = VOID2(ptable_ent **, - PerlMemShared_calloc(t->max + 1, sizeof *t->ary)); - return t; -} -#endif /* !ptable_new */ - -#ifndef PTABLE_HASH -# define PTABLE_HASH(ptr) \ - ((PTR2UV(ptr) >> 3) ^ (PTR2UV(ptr) >> (3 + 7)) ^ (PTR2UV(ptr) >> (3 + 17))) -#endif - -#ifndef ptable_find -STATIC ptable_ent *ptable_find(const ptable * const t, const void * const key) { -#define ptable_find ptable_find - ptable_ent *ent; - const UV hash = PTABLE_HASH(key); - - ent = t->ary[hash & t->max]; - for (; ent; ent = ent->next) { - if (ent->key == key) - return ent; - } - - return NULL; -} -#endif /* !ptable_find */ - -#ifndef ptable_fetch -STATIC void *ptable_fetch(const ptable * const t, const void * const key) { -#define ptable_fetch ptable_fetch - const ptable_ent *const ent = ptable_find(t, key); - - return ent ? ent->val : NULL; -} -#endif /* !ptable_fetch */ - -#ifndef ptable_split -STATIC void ptable_split(pPTBLMS_ ptable * const t) { -#define ptable_split(T) ptable_split(aPTBLMS_ (T)) - ptable_ent **ary = t->ary; - const size_t oldsize = t->max + 1; - size_t newsize = oldsize * 2; - size_t i; - - ary = VOID2(ptable_ent **, PerlMemShared_realloc(ary, newsize * sizeof(*ary))); - Zero(&ary[oldsize], newsize - oldsize, sizeof(*ary)); - t->max = --newsize; - t->ary = ary; - - for (i = 0; i < oldsize; i++, ary++) { - ptable_ent **curentp, **entp, *ent; - if (!*ary) - continue; - curentp = ary + oldsize; - for (entp = ary, ent = *ary; ent; ent = *entp) { - if ((newsize & PTABLE_HASH(ent->key)) != i) { - *entp = ent->next; - ent->next = *curentp; - *curentp = ent; - continue; - } else - entp = &ent->next; - } - } -} -#endif /* !ptable_split */ - -STATIC void PTABLE_PREFIX(_store)(pPTBL_ ptable * const t, const void * const key, void * const val) { - ptable_ent *ent = ptable_find(t, key); - - if (ent) { - void *oldval = ent->val; - PTABLE_VAL_FREE(oldval); - ent->val = val; - } else if (val) { - const size_t i = PTABLE_HASH(key) & t->max; - ent = VOID2(ptable_ent *, PerlMemShared_malloc(sizeof *ent)); - ent->key = key; - ent->val = val; - ent->next = t->ary[i]; - t->ary[i] = ent; - t->items++; - if (ent->next && t->items > t->max) - ptable_split(t); - } -} - -STATIC void PTABLE_PREFIX(_delete)(pPTBL_ ptable * const t, const void * const key) { - ptable_ent *prev, *ent; - const size_t i = PTABLE_HASH(key) & t->max; - - prev = NULL; - ent = t->ary[i]; - for (; ent; prev = ent, ent = ent->next) { - if (ent->key == key) - break; - } - - if (ent) { - if (prev) - prev->next = ent->next; - else - t->ary[i] = ent->next; - PTABLE_VAL_FREE(ent->val); - PerlMemShared_free(ent); - } -} - -#ifndef ptable_walk -STATIC void ptable_walk(pTHX_ ptable * const t, void (*cb)(pTHX_ ptable_ent *ent, void *userdata), void *userdata) { -#define ptable_walk(T, CB, UD) ptable_walk(aTHX_ (T), (CB), (UD)) - if (t && t->items) { - register ptable_ent ** const array = t->ary; - size_t i = t->max; - do { - ptable_ent *entry; - for (entry = array[i]; entry; entry = entry->next) - if (entry->val) - cb(aTHX_ entry, userdata); - } while (i--); - } -} -#endif /* !ptable_walk */ - -STATIC void PTABLE_PREFIX(_clear)(pPTBL_ ptable * const t) { - if (t && t->items) { - register ptable_ent ** const array = t->ary; - size_t i = t->max; - - do { - ptable_ent *entry = array[i]; - while (entry) { - ptable_ent * const oentry = entry; - void *val = oentry->val; - entry = entry->next; - PTABLE_VAL_FREE(val); - PerlMemShared_free(oentry); - } - array[i] = NULL; - } while (i--); - - t->items = 0; - } -} - -STATIC void PTABLE_PREFIX(_free)(pPTBL_ ptable * const t) { - if (!t) - return; - PTABLE_PREFIX(_clear)(aPTBL_ t); - PerlMemShared_free(t->ary); - PerlMemShared_free(t); -} - -#undef pPTBL -#undef pPTBL_ -#undef aPTBL -#undef aPTBL_ - -#undef PTABLE_NAME -#undef PTABLE_VAL_FREE diff --git a/xsh/caps.h b/xsh/caps.h new file mode 100644 index 0000000..4559524 --- /dev/null +++ b/xsh/caps.h @@ -0,0 +1,47 @@ +#ifndef XSH_CAPS_H +#define XSH_CAPS_H 1 + +#define XSH_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S)))))) + +#define XSH_HAS_PERL_BRANCH(R, V, S) (PERL_REVISION == (R) && PERL_VERSION == (V) && PERL_SUBVERSION >= (S)) + +#define XSH_HAS_PERL_EXACT(R, V, S) ((PERL_REVISION == (R)) && (PERL_VERSION == (V)) && (PERL_SUBVERSION == (S))) + +#ifndef XSH_PERL_PATCHLEVEL +# ifdef PERL_PATCHNUM +# define XSH_PERL_PATCHLEVEL PERL_PATCHNUM +# else +# define XSH_PERL_PATCHLEVEL 0 +# endif +#endif + +#define XSH_HAS_PERL_MAINT(R, V, S, P) (PERL_REVISION == (R) && PERL_VERSION == (V) && (XSH_PERL_PATCHLEVEL >= (P) || (!XSH_PERL_PATCHLEVEL && PERL_SUBVERSION >= (S)))) + +#ifndef XSH_MULTIPLICITY +# if defined(MULTIPLICITY) +# define XSH_MULTIPLICITY 1 +# else +# define XSH_MULTIPLICITY 0 +# endif +#endif +#if XSH_MULTIPLICITY +# ifndef PERL_IMPLICIT_CONTEXT +# error MULTIPLICITY builds must set PERL_IMPLICIT_CONTEXT +# endif +# ifndef tTHX +# define tTHX PerlInterpreter* +# endif +#endif + +#if XSH_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 XSH_THREADSAFE 1 +#else +# define XSH_THREADSAFE 0 +#endif + +/* Safe unless stated otherwise in Makefile.PL */ +#ifndef XSH_FORKSAFE +# define XSH_FORKSAFE 1 +#endif + +#endif /* XSH_CAPS_H */ diff --git a/xsh/debug.h b/xsh/debug.h new file mode 100644 index 0000000..707c760 --- /dev/null +++ b/xsh/debug.h @@ -0,0 +1,27 @@ +#ifndef XSH_DEBUG_H +#define XSH_DEBUG_H 1 + +#include "util.h" /* XSH_PACKAGE, STMT_* */ + +#ifndef XSH_DEBUG +# define XSH_DEBUG 0 +#endif + +#if XSH_DEBUG +# define XSH_D(X) STMT_START X STMT_END +static void xsh_debug_log(const char *fmt, ...) { + va_list va; + SV *sv; + dTHX; + va_start(va, fmt); + sv = get_sv(XSH_PACKAGE "::DEBUG", 0); + if (sv && SvTRUE(sv)) + PerlIO_vprintf(Perl_debug_log, fmt, va); + va_end(va); + return; +} +#else +# define XSH_D(X) +#endif + +#endif /* XSH_DEBUG_H */ diff --git a/xsh/hints.h b/xsh/hints.h new file mode 100644 index 0000000..458b117 --- /dev/null +++ b/xsh/hints.h @@ -0,0 +1,372 @@ +#ifndef XSH_HINTS_H +#define XSH_HINTS_H 1 + +#include "caps.h" /* XSH_HAS_PERL(), XSH_THREADSAFE, tTHX */ + +#ifdef XSH_THREADS_H +# error threads.h must be loaded at the very end +#endif + +#define XSH_HINTS_KEY XSH_PACKAGE +#define XSH_HINTS_KEY_LEN (sizeof(XSH_HINTS_KEY)-1) + +#ifndef XSH_WORKAROUND_REQUIRE_PROPAGATION +# define XSH_WORKAROUND_REQUIRE_PROPAGATION !XSH_HAS_PERL(5, 10, 1) +#endif + +#ifndef XSH_HINTS_ONLY_COMPILE_TIME +# define XSH_HINTS_ONLY_COMPILE_TIME 1 +#endif + +#ifdef XSH_HINTS_TYPE_UV +# ifdef XSH_HINTS_TYPE_VAL +# error hint type can only be set once +# endif +# undef XSH_HINTS_TYPE_UV +# define XSH_HINTS_TYPE_UV 1 +# define XSH_HINTS_TYPE_STRUCT UV +# define XSH_HINTS_TYPE_COMPACT UV +# define XSH_HINTS_NEED_STRUCT 0 +# define XSH_HINTS_VAL_STRUCT_REF 0 +# define XSH_HINTS_VAL_NONE 0 +# define XSH_HINTS_VAL_PACK(T, V) INT2PTR(T, (V)) +# define XSH_HINTS_VAL_UNPACK(V) ((XSH_HINTS_TYPE_VAL) PTR2UV(V)) +# define XSH_HINTS_VAL_INIT(HV, V) ((HV) = (V)) +# undef XSH_HINTS_VAL_CLONE +# undef XSH_HINTS_VAL_DEINIT +#endif + +#ifdef XSH_HINTS_TYPE_SV +# ifdef XSH_HINTS_TYPE_VAL +# error hint type can only be set once +# endif +# undef XSH_HINTS_TYPE_SV +# define XSH_HINTS_TYPE_SV 1 +# define XSH_HINTS_TYPE_STRUCT SV * +# define XSH_HINTS_TYPE_COMPACT SV +# define XSH_HINTS_NEED_STRUCT 0 +# define XSH_HINTS_VAL_STRUCT_REF 0 +# define XSH_HINTS_VAL_NONE NULL +# define XSH_HINTS_VAL_PACK(T, V) (V) +# define XSH_HINTS_VAL_UNPACK(V) (V) +# define XSH_HINTS_VAL_INIT(HV, V) ((HV) = (((V) != XSH_HINTS_VAL_NONE) ? SvREFCNT_inc(V) : XSH_HINTS_VAL_NONE)) +# define XSH_HINTS_VAL_CLONE(N, O) ((N) = xsh_dup_inc((O), ud->params)) +# define XSH_HINTS_VAL_DEINIT(V) SvREFCNT_dec(V) +#endif + +#ifdef XSH_HINTS_TYPE_USER +# ifdef XSH_HINTS_TYPE_VAL +# error hint type can only be set once +# endif +# undef XSH_HINTS_TYPE_USER +# define XSH_HINTS_TYPE_USER 1 +# define XSH_HINTS_TYPE_STRUCT xsh_hints_user_t +# undef XSH_HINTS_TYPE_COMPACT /* not used */ +# define XSH_HINTS_NEED_STRUCT 1 +# define XSH_HINTS_VAL_STRUCT_REF 1 +# define XSH_HINTS_VAL_NONE NULL +# define XSH_HINTS_VAL_PACK(T, V) (V) +# define XSH_HINTS_VAL_UNPACK(V) (V) +# define XSH_HINTS_VAL_INIT(HV, V) xsh_hints_user_init(aTHX_ (HV), (V)) +# define XSH_HINTS_VAL_CLONE(NV, OV) xsh_hints_user_clone(aTHX_ (NV), (OV), ud->params) +# define XSH_HINTS_VAL_DEINIT(V) xsh_hints_user_deinit(aTHX_ (V)) +#endif + +#ifndef XSH_HINTS_TYPE_STRUCT +# error hint type was not set +#endif + +#if XSH_HINTS_VAL_STRUCT_REF +# define XSH_HINTS_TYPE_VAL XSH_HINTS_TYPE_STRUCT * +#else +# define XSH_HINTS_TYPE_VAL XSH_HINTS_TYPE_STRUCT +#endif + +#if XSH_WORKAROUND_REQUIRE_PROPAGATION +# undef XSH_HINTS_NEED_STRUCT +# define XSH_HINTS_NEED_STRUCT 1 +#endif + +#if XSH_THREADSAFE && (defined(XSH_HINTS_VAL_CLONE) || XSH_WORKAROUND_REQUIRE_PROPAGATION) +# define XSH_HINTS_NEED_CLONE 1 +#else +# define XSH_HINTS_NEED_CLONE 0 +#endif + +#if XSH_WORKAROUND_REQUIRE_PROPAGATION + +static UV xsh_require_tag(pTHX) { +#define xsh_require_tag() xsh_require_tag(aTHX) + const CV *cv, *outside; + + cv = PL_compcv; + + if (!cv) { + /* If for some reason the pragma is operational at run-time, try to discover + * the current cv in use. */ + const PERL_SI *si; + + 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; + + switch (CxTYPE(cx)) { + case CXt_SUB: + case CXt_FORMAT: + /* The propagation workaround is only needed up to 5.10.0 and at that + * time format and sub contexts were still identical. And even later the + * cv members offsets should have been kept the same. */ + cv = cx->blk_sub.cv; + goto get_enclosing_cv; + case CXt_EVAL: + cv = cx->blk_eval.cv; + goto get_enclosing_cv; + default: + break; + } + } + } + + cv = PL_main_cv; + } + +get_enclosing_cv: + for (outside = CvOUTSIDE(cv); outside; outside = CvOUTSIDE(cv)) + cv = outside; + + return PTR2UV(cv); +} + +#endif /* XSH_WORKAROUND_REQUIRE_PROPAGATION */ + +#if XSH_HINTS_NEED_STRUCT + +typedef struct { + XSH_HINTS_TYPE_STRUCT val; +#if XSH_WORKAROUND_REQUIRE_PROPAGATION + UV require_tag; +#endif +} xsh_hints_t; + +#if XSH_HINTS_VAL_STRUCT_REF +# define XSH_HINTS_VAL_GET(H) (&(H)->val) +#else +# define XSH_HINTS_VAL_GET(H) ((H)->val) +#endif + +#define XSH_HINTS_VAL_SET(H, V) XSH_HINTS_VAL_INIT(XSH_HINTS_VAL_GET(H), (V)) + +#ifdef XSH_HINTS_VAL_DEINIT +# define XSH_HINTS_FREE(H) \ + if (H) XSH_HINTS_VAL_DEINIT(XSH_HINTS_VAL_GET(H)); \ + PerlMemShared_free(H) +#else +# define XSH_HINTS_FREE(H) PerlMemShared_free(H) +#endif + +#else /* XSH_HINTS_NEED_STRUCT */ + +typedef XSH_HINTS_TYPE_COMPACT xsh_hints_t; + +#define XSH_HINTS_VAL_GET(H) XSH_HINTS_VAL_UNPACK(H) +#define XSH_HINTS_VAL_SET(H, V) STMT_START { XSH_HINTS_TYPE_VAL tmp; XSH_HINTS_VAL_INIT(tmp, (V)); (H) = XSH_HINTS_VAL_PACK(xsh_hints_t *, tmp); } STMT_END + +#undef XSH_HINTS_FREE + +#endif /* !XSH_HINTS_NEED_STRUCT */ + +/* ... Thread safety ....................................................... */ + +#if XSH_HINTS_NEED_CLONE + +#ifdef XSH_HINTS_FREE +# define PTABLE_NAME ptable_hints +# define PTABLE_VAL_FREE(V) XSH_HINTS_FREE((xsh_hints_t *) (V)) +#else +# define PTABLE_USE_DEFAULT 1 +#endif + +#define PTABLE_NEED_WALK 1 +#define PTABLE_NEED_DELETE 0 + +#include "ptable.h" + +#if PTABLE_WAS_DEFAULT +# define ptable_hints_store(T, K, V) ptable_default_store(aPTBL_ (T), (K), (V)) +# define ptable_hints_free(T) ptable_default_free(aPTBL_ (T)) +#else +# define ptable_hints_store(T, K, V) ptable_hints_store(aPTBL_ (T), (K), (V)) +# define ptable_hints_free(T) ptable_hints_free(aPTBL_ (T)) +#endif + +#define XSH_THREADS_HINTS_CONTEXT 1 + +typedef struct { + ptable *tbl; /* It really is a ptable_hints */ + tTHX owner; +} xsh_hints_cxt_t; + +static xsh_hints_cxt_t *xsh_hints_get_cxt(pTHX); + +static void xsh_hints_local_setup(pTHX_ xsh_hints_cxt_t *cxt) { + cxt->tbl = ptable_new(4); + cxt->owner = aTHX; +} + +static void xsh_hints_local_teardown(pTHX_ xsh_hints_cxt_t *cxt) { + ptable_hints_free(cxt->tbl); + cxt->owner = NULL; +} + +typedef struct { + ptable *tbl; /* It really is a ptable_hints */ + CLONE_PARAMS *params; +} xsh_ptable_clone_ud; + +static void xsh_ptable_clone(pTHX_ ptable_ent *ent, void *ud_) { + xsh_ptable_clone_ud *ud = ud_; + xsh_hints_t *h1 = ent->val; + xsh_hints_t *h2; + +#if XSH_HINTS_NEED_STRUCT + h2 = PerlMemShared_malloc(sizeof *h2); +# if XSH_WORKAROUND_REQUIRE_PROPAGATION + h2->require_tag = PTR2UV(xsh_dup_inc(INT2PTR(SV *, h1->require_tag), ud->params)); +# endif +#endif /* XSH_HINTS_NEED_STRUCT */ + +#ifdef XSH_HINTS_VAL_CLONE + XSH_HINTS_VAL_CLONE(XSH_HINTS_VAL_GET(h2), XSH_HINTS_VAL_GET(h1)); +#endif /* defined(XSH_HINTS_VAL_CLONE) */ + + ptable_hints_store(ud->tbl, ent->key, h2); +} + +static void xsh_hints_clone(pTHX_ const xsh_hints_cxt_t *old_cxt, xsh_hints_cxt_t *new_cxt, CLONE_PARAMS *params) { + xsh_ptable_clone_ud ud; + + new_cxt->tbl = ptable_new(4); + new_cxt->owner = aTHX; + + ud.tbl = new_cxt->tbl; + ud.params = params; + + ptable_walk(old_cxt->tbl, xsh_ptable_clone, &ud); +} + +#endif /* XSH_HINTS_NEED_CLONE */ + +/* ... tag hints ........................................................... */ + +static SV *xsh_hints_tag(pTHX_ XSH_HINTS_TYPE_VAL val) { +#define xsh_hints_tag(V) xsh_hints_tag(aTHX_ (V)) + xsh_hints_t *h; + + if (val == XSH_HINTS_VAL_NONE) + return newSVuv(0); + +#if XSH_HINTS_NEED_STRUCT + h = PerlMemShared_malloc(sizeof *h); +# if XSH_WORKAROUND_REQUIRE_PROPAGATION + h->require_tag = xsh_require_tag(); +# endif +#endif /* XSH_HINTS_NEED_STRUCT */ + + XSH_HINTS_VAL_SET(h, val); + +#if XSH_HINTS_NEED_CLONE + /* 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 hint as the key itself. */ + { + xsh_hints_cxt_t *cxt = xsh_hints_get_cxt(aTHX); + XSH_ASSERT(cxt->tbl); + ptable_hints_store(cxt->tbl, h, h); + } +#endif /* !XSH_HINTS_NEED_CLONE */ + + return newSVuv(PTR2UV(h)); +} + +/* ... detag hints ......................................................... */ + +#define xsh_hints_2uv(H) \ + ((H) \ + ? (SvIOK(H) \ + ? SvUVX(H) \ + : (SvPOK(H) \ + ? sv_2uv(SvLEN(H) ? (H) : sv_mortalcopy(H)) \ + : 0 \ + ) \ + ) \ + : 0) + +static XSH_HINTS_TYPE_VAL xsh_hints_detag(pTHX_ SV *hint) { +#define xsh_hints_detag(H) xsh_hints_detag(aTHX_ (H)) + xsh_hints_t *h; + UV hint_uv; + + hint_uv = xsh_hints_2uv(hint); + h = INT2PTR(xsh_hints_t *, hint_uv); + if (!h) + return XSH_HINTS_VAL_NONE; + +#if XSH_HINTS_NEED_CLONE + { + xsh_hints_cxt_t *cxt = xsh_hints_get_cxt(aTHX); + XSH_ASSERT(cxt->tbl); + h = ptable_fetch(cxt->tbl, h); + } +#endif /* XSH_HINTS_NEED_CLONE */ + +#if XSH_WORKAROUND_REQUIRE_PROPAGATION + if (xsh_require_tag() != h->require_tag) + return XSH_HINTS_VAL_NONE; +#endif + + return XSH_HINTS_VAL_GET(h); +} + +/* ... fetch hints ......................................................... */ + +#if !defined(cop_hints_fetch_pvn) && XSH_HAS_PERL(5, 9, 5) +# define cop_hints_fetch_pvn(COP, PKG, PKGLEN, PKGHASH, FLAGS) \ + Perl_refcounted_he_fetch(aTHX_ (COP)->cop_hints_hash, NULL, \ + (PKG), (PKGLEN), (FLAGS), (PKGHASH)) +#endif + +#ifdef cop_hints_fetch_pvn + +static U32 xsh_hints_key_hash = 0; +# define xsh_hints_global_setup(my_perl) \ + PERL_HASH(xsh_hints_key_hash, XSH_HINTS_KEY, XSH_HINTS_KEY_LEN) + +#else /* defined(cop_hints_fetch_pvn) */ + +# define xsh_hints_global_setup(my_perl) + +#endif /* !defined(cop_hints_fetch_pvn) */ + +#define xsh_hints_global_teardown(my_perl) + +static SV *xsh_hints_fetch(pTHX) { +#define xsh_hints_fetch() xsh_hints_fetch(aTHX) +#if XSH_HINTS_ONLY_COMPILE_TIME + if (IN_PERL_RUNTIME) + return NULL; +#endif + +#ifdef cop_hints_fetch_pvn + return cop_hints_fetch_pvn(PL_curcop, XSH_HINTS_KEY, XSH_HINTS_KEY_LEN, + xsh_hints_key_hash, 0); +#else + { + SV **val = hv_fetch(GvHV(PL_hintgv), XSH_HINTS_KEY, XSH_HINTS_KEY_LEN, 0); + return val ? *val : NULL; + } +#endif +} + +#endif /* XSH_HINTS_H */ diff --git a/xsh/ptable.h b/xsh/ptable.h new file mode 100644 index 0000000..af2e168 --- /dev/null +++ b/xsh/ptable.h @@ -0,0 +1,466 @@ +/* This is a pointer table implementation essentially copied from the ptr_table + * implementation in perl's sv.c, except that it has been modified to use memory + * shared across threads. + * Copyright goes to the original authors, bug reports to me. */ + +/* This header is designed to be included several times with different + * definitions for PTABLE_NAME and PTABLE_VAL_ALLOC/FREE(). */ + +#include "util.h" /* VOID2(), XSH_ASSERT(), xPMS */ + +/* --- Configuration ------------------------------------------------------- */ + +#ifndef PTABLE_USE_DEFAULT +# define PTABLE_USE_DEFAULT 0 +#endif + +#if PTABLE_USE_DEFAULT +# if defined(PTABLE_VAL_ALLOC) || defined(PTABLE_VAL_FREE) +# error the default ptable is only available when PTABLE_VAL_ALLOC/FREE are unset +# endif +# undef PTABLE_NAME +# define PTABLE_NAME ptable_default +# undef PTABLE_VAL_NEED_CONTEXT +# define PTABLE_VAL_NEED_CONTEXT 0 +#else +# ifndef PTABLE_NAME +# error PTABLE_NAME must be defined +# endif +# ifndef PTABLE_VAL_NEED_CONTEXT +# define PTABLE_VAL_NEED_CONTEXT 1 +# endif +#endif + +#ifndef PTABLE_JOIN +# define PTABLE_PASTE(A, B) A ## B +# define PTABLE_JOIN(A, B) PTABLE_PASTE(A, B) +#endif + +#ifndef PTABLE_PREFIX +# define PTABLE_PREFIX(X) PTABLE_JOIN(PTABLE_NAME, X) +#endif + +#ifndef PTABLE_NEED_SPLICE +# define PTABLE_NEED_SPLICE 0 +#endif + +#ifndef PTABLE_NEED_WALK +# define PTABLE_NEED_WALK 0 +#endif + +#ifndef PTABLE_NEED_STORE +# define PTABLE_NEED_STORE 1 +#endif + +#ifndef PTABLE_NEED_VIVIFY +# define PTABLE_NEED_VIVIFY 0 +#elif PTABLE_NEED_VIVIFY +# undef PTABLE_NEED_VIVIFY +# ifndef PTABLE_VAL_ALLOC +# error need to define PTABLE_VAL_ALLOC() to use ptable_vivify() +# endif +# define PTABLE_NEED_VIVIFY 1 +#endif + +#ifndef PTABLE_NEED_DELETE +# define PTABLE_NEED_DELETE 1 +#endif + +#ifndef PTABLE_NEED_CLEAR +# define PTABLE_NEED_CLEAR 1 +#endif + +#undef PTABLE_NEED_ENT_VIVIFY +#if PTABLE_NEED_SPLICE || PTABLE_NEED_STORE || PTABLE_NEED_VIVIFY +# define PTABLE_NEED_ENT_VIVIFY 1 +#else +# define PTABLE_NEED_ENT_VIVIFY 0 +#endif + +#undef PTABLE_NEED_ENT_DETACH +#if PTABLE_NEED_SPLICE || PTABLE_NEED_DELETE +# define PTABLE_NEED_ENT_DETACH 1 +#else +# define PTABLE_NEED_ENT_DETACH 0 +#endif + +/* ... Context for ptable_*() functions calling PTABLE_VAL_ALLOC/FREE() .... */ + +#undef pPTBL +#undef pPTBL_ +#undef aPTBL +#undef aPTBL_ + +#if PTABLE_VAL_NEED_CONTEXT +# define pPTBL pTHX +# define pPTBL_ pTHX_ +# define aPTBL aTHX +# define aPTBL_ aTHX_ +#else +# define pPTBL pPMS +# define pPTBL_ pPMS_ +# define aPTBL aPMS +# define aPTBL_ aPMS_ +#endif + +/* --- struct ----------------------------------------------------- */ + +#ifndef ptable_ent +typedef struct ptable_ent { + struct ptable_ent *next; + const void * key; + void * val; +} ptable_ent; +#define ptable_ent ptable_ent +#endif /* !ptable_ent */ + +#ifndef ptable +typedef struct ptable { + ptable_ent **ary; + size_t max; + size_t items; +} ptable; +#define ptable ptable +#endif /* !ptable */ + +/* --- Private interface --------------------------------------------------- */ + +#ifndef PTABLE_HASH +# define PTABLE_HASH(ptr) \ + ((PTR2UV(ptr) >> 3) ^ (PTR2UV(ptr) >> (3 + 7)) ^ (PTR2UV(ptr) >> (3 + 17))) +#endif + +#ifndef ptable_bucket +# define ptable_bucket(T, K) (PTABLE_HASH(K) & (T)->max) +#endif + +#ifndef ptable_ent_find +static ptable_ent *ptable_ent_find(const ptable *t, const void *key) { +#define ptable_ent_find ptable_ent_find + ptable_ent *ent; + const size_t idx = ptable_bucket(t, key); + + ent = t->ary[idx]; + for (; ent; ent = ent->next) { + if (ent->key == key) + return ent; + } + + return NULL; +} +#endif /* !ptable_ent_find */ + +#if PTABLE_NEED_ENT_VIVIFY + +#ifndef ptable_split +static void ptable_split(pPMS_ ptable *t) { +#define ptable_split(T) ptable_split(aPMS_ (T)) + ptable_ent **ary = t->ary; + const size_t old_size = t->max + 1; + size_t new_size = old_size * 2; + size_t i; + + ary = VOID2(ptable_ent **, + PerlMemShared_realloc(ary, new_size * sizeof *ary)); + Zero(ary + old_size, new_size - old_size, sizeof *ary); + t->max = --new_size; + t->ary = ary; + + for (i = 0; i < old_size; i++, ary++) { + ptable_ent **curentp, **entp, *ent; + + ent = *ary; + if (!ent) + continue; + entp = ary; + curentp = ary + old_size; + + do { + if ((new_size & PTABLE_HASH(ent->key)) != i) { + *entp = ent->next; + ent->next = *curentp; + *curentp = ent; + } else { + entp = &ent->next; + } + ent = *entp; + } while (ent); + } +} +#endif /* !ptable_split */ + +#ifndef ptable_ent_vivify +static ptable_ent *ptable_ent_vivify(pPMS_ ptable *t, const void *key) { +#define ptable_ent_vivify(T, K) ptable_ent_vivify(aPMS_ (T), (K)) + ptable_ent *ent; + const size_t idx = ptable_bucket(t, key); + + ent = t->ary[idx]; + for (; ent; ent = ent->next) { + if (ent->key == key) + return ent; + } + + ent = VOID2(ptable_ent *, PerlMemShared_malloc(sizeof *ent)); + + ent->key = key; + ent->val = NULL; + ent->next = t->ary[idx]; + t->ary[idx] = ent; + + t->items++; + if (ent->next && t->items > t->max) + ptable_split(t); + + return ent; +} +#endif /* !ptable_ent_vivify */ + +#endif /* PTABLE_NEED_ENT_VIVIFY */ + +#if PTABLE_NEED_ENT_DETACH + +#ifndef ptable_ent_detach +static ptable_ent *ptable_ent_detach(ptable *t, const void *key) { +#define ptable_ent_detach ptable_ent_detach + ptable_ent *prev, *ent; + const size_t idx = ptable_bucket(t, key); + + prev = NULL; + ent = t->ary[idx]; + for (; ent; prev = ent, ent = ent->next) { + if (ent->key == key) { + if (prev) + prev->next = ent->next; + else + t->ary[idx] = ent->next; + break; + } + } + + return ent; +} +#endif /* !ptable_ent_detach */ + +#endif /* PTABLE_NEED_ENT_DETACH */ + +/* --- Public interface ---------------------------------------------------- */ + +/* ... Common symbols ...................................................... */ + +#ifndef ptable_new +static ptable *ptable_new(pPMS_ size_t init_buckets) { +#define ptable_new(B) ptable_new(aPMS_ (B)) + ptable *t; + + if (init_buckets < 4) { + init_buckets = 4; + } else { + init_buckets--; + init_buckets |= init_buckets >> 1; + init_buckets |= init_buckets >> 2; + init_buckets |= init_buckets >> 4; + init_buckets |= init_buckets >> 8; + init_buckets |= init_buckets >> 16; + if (sizeof(init_buckets) > 4) + init_buckets |= init_buckets >> 32; + init_buckets++; + } + + XSH_ASSERT(init_buckets >= 4 && ((init_buckets & (init_buckets - 1)) == 0)); + + t = VOID2(ptable *, PerlMemShared_malloc(sizeof *t)); + t->max = init_buckets - 1; + t->items = 0; + t->ary = VOID2(ptable_ent **, + PerlMemShared_calloc(t->max + 1, sizeof *t->ary)); + return t; +} +#endif /* !ptable_new */ + +#ifndef ptable_fetch +static void *ptable_fetch(const ptable *t, const void *key) { +#define ptable_fetch ptable_fetch + const ptable_ent *ent = ptable_ent_find(t, key); + + return ent ? ent->val : NULL; +} +#endif /* !ptable_fetch */ + +#if PTABLE_NEED_SPLICE + +#ifndef ptable_splice +static void *ptable_splice(pPMS_ ptable *t, const void *key, void *new_val) { +#define ptable_splice(T, K, V) ptable_splice(aPMS_ (T), (K), (V)) + ptable_ent *ent; + void *old_val = NULL; + + if (new_val) { + ent = ptable_ent_vivify(t, key); + old_val = ent->val; + ent->val = new_val; + } else { + ent = ptable_ent_detach(t, key); + if (ent) { + old_val = ent->val; + PerlMemShared_free(ent); + } + } + + return old_val; +} +#endif /* !ptable_splice */ + +#endif /* PTABLE_NEED_SPLICE */ + +#if PTABLE_NEED_WALK + +#ifndef ptable_walk +static void ptable_walk(pTHX_ ptable *t, void (*cb)(pTHX_ ptable_ent *ent, void *userdata), void *userdata) { +#define ptable_walk(T, CB, UD) ptable_walk(aTHX_ (T), (CB), (UD)) + if (t && t->items) { + register ptable_ent **array = t->ary; + size_t i = t->max; + do { + ptable_ent *entry; + for (entry = array[i]; entry; entry = entry->next) + if (entry->val) + cb(aTHX_ entry, userdata); + } while (i--); + } +} +#endif /* !ptable_walk */ + +#endif /* PTABLE_NEED_WALK */ + +/* ... Specialized symbols ................................................. */ + +#if PTABLE_NEED_STORE + +#if !PTABLE_USE_DEFAULT || !defined(ptable_default_store) +static void PTABLE_PREFIX(_store)(pPTBL_ ptable *t, const void *key, void *val){ + ptable_ent *ent = ptable_ent_vivify(t, key); + +#ifdef PTABLE_VAL_FREE + PTABLE_VAL_FREE(ent->val); +#endif + + ent->val = val; + + return; +} +# if PTABLE_USE_DEFAULT +# define ptable_default_store ptable_default_store +# endif +#endif /* !PTABLE_USE_DEFAULT || !defined(ptable_default_store) */ + +#endif /* PTABLE_NEED_STORE */ + +#if PTABLE_NEED_VIVIFY + +#if !PTABLE_USE_DEFAULT || !defined(ptable_default_vivify) +static void *PTABLE_PREFIX(_vivify)(pPTBL_ ptable *t, const void *key) { + ptable_ent *ent = ptable_ent_vivify(t, key); + + if (!ent->val) { + PTABLE_VAL_ALLOC(ent->val); + } + + return ent->val; +} +# if PTABLE_USE_DEFAULT +# define ptable_default_vivify ptable_default_vivify +# endif +#endif /* !PTABLE_USE_DEFAULT || !defined(ptable_default_vivify) */ + +#endif /* PTABLE_NEED_VIVIFY */ + +#if PTABLE_NEED_DELETE + +#if !PTABLE_USE_DEFAULT || !defined(ptable_default_delete) +static void PTABLE_PREFIX(_delete)(pPTBL_ ptable *t, const void *key) { + ptable_ent *ent = ptable_ent_detach(t, key); + +#ifdef PTABLE_VAL_FREE + if (ent) { + PTABLE_VAL_FREE(ent->val); + } +#endif + + PerlMemShared_free(ent); +} +# if PTABLE_USE_DEFAULT +# define ptable_default_delete ptable_default_delete +# endif +#endif /* !PTABLE_USE_DEFAULT || !defined(ptable_default_delete) */ + +#endif /* PTABLE_NEED_DELETE */ + +#if PTABLE_NEED_CLEAR + +#if !PTABLE_USE_DEFAULT || !defined(ptable_default_clear) +static void PTABLE_PREFIX(_clear)(pPTBL_ ptable *t) { + if (t && t->items) { + register ptable_ent **array = t->ary; + size_t idx = t->max; + + do { + ptable_ent *entry = array[idx]; + while (entry) { + ptable_ent *nentry = entry->next; +#ifdef PTABLE_VAL_FREE + PTABLE_VAL_FREE(entry->val); +#endif + PerlMemShared_free(entry); + entry = nentry; + } + array[idx] = NULL; + } while (idx--); + + t->items = 0; + } +} +# if PTABLE_USE_DEFAULT +# define ptable_default_clear ptable_default_clear +# endif +#endif /* !PTABLE_USE_DEFAULT || !defined(ptable_default_clear) */ + +#endif /* PTABLE_NEED_CLEAR */ + +#if !PTABLE_USE_DEFAULT || !defined(ptable_default_free) +static void PTABLE_PREFIX(_free)(pPTBL_ ptable *t) { + if (!t) + return; + PTABLE_PREFIX(_clear)(aPTBL_ t); + PerlMemShared_free(t->ary); + PerlMemShared_free(t); +} +# if PTABLE_USE_DEFAULT +# define ptable_default_free ptable_default_free +# endif +#endif /* !PTABLE_USE_DEFAULT || !defined(ptable_default_free) */ + +/* --- Cleanup ------------------------------------------------------------- */ + +#undef PTABLE_WAS_DEFAULT +#if PTABLE_USE_DEFAULT +# define PTABLE_WAS_DEFAULT 1 +#else +# define PTABLE_WAS_DEFAULT 0 +#endif + +#undef PTABLE_NAME +#undef PTABLE_VAL_ALLOC +#undef PTABLE_VAL_FREE +#undef PTABLE_VAL_NEED_CONTEXT +#undef PTABLE_USE_DEFAULT + +#undef PTABLE_NEED_SPLICE +#undef PTABLE_NEED_WALK +#undef PTABLE_NEED_STORE +#undef PTABLE_NEED_VIVIFY +#undef PTABLE_NEED_DELETE +#undef PTABLE_NEED_CLEAR + +#undef PTABLE_NEED_ENT_VIVIFY +#undef PTABLE_NEED_ENT_DETACH diff --git a/xsh/threads.h b/xsh/threads.h new file mode 100644 index 0000000..b72c63b --- /dev/null +++ b/xsh/threads.h @@ -0,0 +1,501 @@ +#ifndef XSH_THREADS_H +#define XSH_THREADS_H 1 + +#include "caps.h" /* XSH_HAS_PERL(), XSH_THREADSAFE */ +#include "util.h" /* XSH_PACKAGE, dNOOP, NOOP */ + +#ifndef XSH_THREADS_COMPILE_TIME_PROTECTION +# define XSH_THREADS_COMPILE_TIME_PROTECTION 0 +#endif + +#ifndef XSH_THREADS_USER_CONTEXT +# define XSH_THREADS_USER_CONTEXT 1 +#endif + +#ifndef XSH_THREADS_USER_GLOBAL_SETUP +# define XSH_THREADS_USER_GLOBAL_SETUP 1 +#endif + +#ifndef XSH_THREADS_USER_LOCAL_SETUP +# define XSH_THREADS_USER_LOCAL_SETUP 1 +#endif + +#ifndef XSH_THREADS_USER_LOCAL_TEARDOWN +# define XSH_THREADS_USER_LOCAL_TEARDOWN 1 +#endif + +#ifndef XSH_THREADS_USER_GLOBAL_TEARDOWN +# define XSH_THREADS_USER_GLOBAL_TEARDOWN 1 +#endif + +#ifndef XSH_THREADS_PEEP_CONTEXT +# define XSH_THREADS_PEEP_CONTEXT 0 +#endif + +#ifndef XSH_THREADS_HINTS_CONTEXT +# define XSH_THREADS_HINTS_CONTEXT 0 +#endif + +#ifndef XSH_THREADS_USER_CLONE_NEEDS_DUP +# define XSH_THREADS_USER_CLONE_NEEDS_DUP 0 +#endif + +#if XSH_THREADSAFE && (XSH_THREADS_HINTS_CONTEXT || XSH_THREADS_USER_CLONE_NEEDS_DUP) +# define XSH_THREADS_CLONE_NEEDS_DUP 1 +#else +# define XSH_THREADS_CLONE_NEEDS_DUP 0 +#endif + +#if defined(XSH_OPS_H) && (!XSH_THREADS_GLOBAL_SETUP || !XSH_THREADS_GLOBAL_TEARDOWN) +# error settting up hook check functions require global setup/teardown +#endif + +#ifndef XSH_THREADS_NEED_TEARDOWN_LATE +# define XSH_THREADS_NEED_TEARDOWN_LATE 0 +#endif + +#if XSH_THREADS_NEED_TEARDOWN_LATE && (!XSH_THREADS_USER_LOCAL_TEARDOWN || !XSH_THREADS_USER_GLOBAL_TEARDOWN) +# error you need to declare local or global teardown handlers to use the late teardown feature +#endif + +#if XSH_THREADSAFE +# 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 +# undef dMY_CXT +# define dMY_CXT dNOOP +# undef MY_CXT +# define MY_CXT xsh_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 +#endif + +#if XSH_THREADSAFE +/* We must use preexistent global mutexes or we will never be able to destroy + * them. */ +# if XSH_HAS_PERL(5, 9, 3) +# define XSH_LOADED_LOCK MUTEX_LOCK(&PL_my_ctx_mutex) +# define XSH_LOADED_UNLOCK MUTEX_UNLOCK(&PL_my_ctx_mutex) +# else +# define XSH_LOADED_LOCK OP_REFCNT_LOCK +# define XSH_LOADED_UNLOCK OP_REFCNT_UNLOCK +# endif +#else +# define XSH_LOADED_LOCK NOOP +# define XSH_LOADED_UNLOCK NOOP +#endif + +static I32 xsh_loaded = 0; + +#if XSH_THREADSAFE && XSH_THREADS_COMPILE_TIME_PROTECTION + +#define PTABLE_USE_DEFAULT 1 + +#include "ptable.h" + +#define ptable_loaded_store(T, K, V) ptable_default_store(aPTBL_ (T), (K), (V)) +#define ptable_loaded_delete(T, K) ptable_default_delete(aPTBL_ (T), (K)) +#define ptable_loaded_free(T) ptable_default_free(aPTBL_ (T)) + +static ptable *xsh_loaded_cxts = NULL; + +static int xsh_is_loaded(pTHX_ void *cxt) { +#define xsh_is_loaded(C) xsh_is_loaded(aTHX_ (C)) + int res = 0; + + XSH_LOADED_LOCK; + if (xsh_loaded_cxts && ptable_fetch(xsh_loaded_cxts, cxt)) + res = 1; + XSH_LOADED_UNLOCK; + + return res; +} + +static int xsh_set_loaded_locked(pTHX_ void *cxt) { +#define xsh_set_loaded_locked(C) xsh_set_loaded_locked(aTHX_ (C)) + int global_setup = 0; + + if (xsh_loaded <= 0) { + XSH_ASSERT(xsh_loaded == 0); + XSH_ASSERT(!xsh_loaded_cxts); + xsh_loaded_cxts = ptable_new(4); + global_setup = 1; + } + ++xsh_loaded; + XSH_ASSERT(xsh_loaded_cxts); + ptable_loaded_store(xsh_loaded_cxts, cxt, cxt); + + return global_setup; +} + +static int xsh_clear_loaded_locked(pTHX_ void *cxt) { +#define xsh_clear_loaded_locked(C) xsh_clear_loaded_locked(aTHX_ (C)) + int global_teardown = 0; + + if (xsh_loaded > 1) { + XSH_ASSERT(xsh_loaded_cxts); + ptable_loaded_delete(xsh_loaded_cxts, cxt); + --xsh_loaded; + } else if (xsh_loaded_cxts) { + XSH_ASSERT(xsh_loaded == 1); + ptable_loaded_free(xsh_loaded_cxts); + xsh_loaded_cxts = NULL; + xsh_loaded = 0; + global_teardown = 1; + } + + return global_teardown; +} + +#else /* XSH_THREADS_COMPILE_TIME_PROTECTION */ + +#define xsh_is_loaded_locked(C) (xsh_loaded > 0) +#define xsh_set_loaded_locked(C) ((xsh_loaded++ <= 0) ? 1 : 0) +#define xsh_clear_loaded_locked(C) ((--xsh_loaded <= 0) ? 1 : 0) + +#if XSH_THREADSAFE + +static int xsh_is_loaded(pTHX_ void *cxt) { +#define xsh_is_loaded(C) xsh_is_loaded(aTHX_ (C)) + int res = 0; + + XSH_LOADED_LOCK; + res = xsh_is_loaded_locked(cxt); + XSH_LOADED_UNLOCK; + + return res; +} + +#else + +#define xsh_is_loaded(C) xsh_is_loaded_locked(C) + +#endif + +#endif /* !XSH_THREADS_COMPILE_TIME_PROTECTION */ + +#define MY_CXT_KEY XSH_PACKAGE "::_guts" XS_VERSION + +typedef struct { +#if XSH_THREADS_USER_CONTEXT + xsh_user_cxt_t cxt_user; +#endif +#if XSH_THREADS_PEEP_CONTEXT + xsh_peep_cxt_t cxt_peep; +#endif +#if XSH_THREADS_HINTS_CONTEXT + xsh_hints_cxt_t cxt_hints; +#endif +#if XSH_THREADS_CLONE_NEEDS_DUP + tTHX owner; +#endif +#if !(XSH_THREADS_USER_CONTEXT || XSH_THREADS_PEEP_CONTEXT || XSH_THREADS_HINTS_CONTEXT || XSH_THREADS_CLONE_NEEDS_DUP) + int dummy; +#endif +} my_cxt_t; + +START_MY_CXT + +#if XSH_THREADS_USER_CONTEXT +# define dXSH_CXT dMY_CXT +# define XSH_CXT (MY_CXT.cxt_user) +#endif + +#if XSH_THREADS_USER_GLOBAL_SETUP +static void xsh_user_global_setup(pTHX); +#endif + +#if XSH_THREADS_USER_LOCAL_SETUP +# if XSH_THREADS_USER_CONTEXT +static void xsh_user_local_setup(pTHX_ xsh_user_cxt_t *cxt); +# else +static void xsh_user_local_setup(pTHX); +# endif +#endif + +#if XSH_THREADS_USER_LOCAL_TEARDOWN +# if XSH_THREADS_USER_CONTEXT +static void xsh_user_local_teardown(pTHX_ xsh_user_cxt_t *cxt); +# else +static void xsh_user_local_teardown(pTHX); +# endif +#endif + +#if XSH_THREADS_USER_GLOBAL_TEARDOWN +static void xsh_user_global_teardown(pTHX); +#endif + +#if XSH_THREADSAFE && XSH_THREADS_USER_CONTEXT +# if XSH_THREADS_USER_CLONE_NEEDS_DUP +static void xsh_user_clone(pTHX_ const xsh_user_cxt_t *old_cxt, xsh_user_cxt_t *new_cxt, CLONE_PARAMS *params); +# else +static void xsh_user_clone(pTHX_ const xsh_user_cxt_t *old_cxt, xsh_user_cxt_t *new_cxt); +# endif +#endif + +#if XSH_THREADS_PEEP_CONTEXT +static xsh_peep_cxt_t *xsh_peep_get_cxt(pTHX) { + dMY_CXT; + XSH_ASSERT(xsh_is_loaded(&MY_CXT)); + return &MY_CXT.cxt_peep; +} +#endif + +#if XSH_THREADS_HINTS_CONTEXT +static xsh_hints_cxt_t *xsh_hints_get_cxt(pTHX) { + dMY_CXT; + XSH_ASSERT(xsh_is_loaded(&MY_CXT)); + return &MY_CXT.cxt_hints; +} +#endif + +#if XSH_THREADS_NEED_TEARDOWN_LATE + +typedef void (*xsh_teardown_late_cb)(pTHX_ void *ud); + +static int xsh_teardown_late_simple_free(pTHX_ SV *sv, MAGIC *mg) { + xsh_teardown_late_cb cb; + + cb = DPTR2FPTR(xsh_teardown_late_cb, mg->mg_ptr); + + XSH_LOADED_LOCK; + if (xsh_loaded == 0) + cb(aTHX_ NULL); + XSH_LOADED_UNLOCK; + + return 0; +} + +static MGVTBL xsh_teardown_late_simple_vtbl = { + 0, + 0, + 0, + 0, + xsh_teardown_late_simple_free +#if MGf_COPY + , 0 +#endif +#if MGf_DUP + , 0 +#endif +#if MGf_LOCAL + , 0 +#endif +}; + +typedef struct { + xsh_teardown_late_cb cb; + void *ud; +} xsh_teardown_late_token; + +static int xsh_teardown_late_arg_free(pTHX_ SV *sv, MAGIC *mg) { + xsh_teardown_late_token *tok; + + tok = (xsh_teardown_late_token *) mg->mg_ptr; + + XSH_LOADED_LOCK; + if (xsh_loaded == 0) + tok->cb(aTHX_ tok->ud); + XSH_LOADED_UNLOCK; + + PerlMemShared_free(tok); + + return 0; +} + +static MGVTBL xsh_teardown_late_arg_vtbl = { + 0, + 0, + 0, + 0, + xsh_teardown_late_arg_free +#if MGf_COPY + , 0 +#endif +#if MGf_DUP + , 0 +#endif +#if MGf_LOCAL + , 0 +#endif +}; + +static void xsh_teardown_late_register(pTHX_ xsh_teardown_late_cb cb, void *ud){ +#define xsh_teardown_late_register(CB, UD) xsh_teardown_late_register(aTHX_ (CB), (UD)) + void *ptr; + + if (!ud) { + ptr = FPTR2DPTR(void *, cb); + } else { + xsh_teardown_late_token *tok; + + tok = PerlMemShared_malloc(sizeof *tok); + tok->cb = cb; + tok->ud = ud; + + ptr = tok; + } + + if (!PL_strtab) + PL_strtab = newHV(); + + sv_magicext((SV *) PL_strtab, NULL, PERL_MAGIC_ext, + ud ? &xsh_teardown_late_arg_vtbl : &xsh_teardown_late_simple_vtbl, + ptr, 0); + + return; +} + +#endif /* XSH_THREADS_NEED_TEARDOWN_LATE */ + +static void xsh_teardown(pTHX_ void *root) { + dMY_CXT; + +#if XSH_THREADS_USER_LOCAL_TEARDOWN +# if XSH_THREADS_USER_CONTEXT + xsh_user_local_teardown(aTHX_ &XSH_CXT); +# else + xsh_user_local_teardown(aTHX); +# endif +#endif + +#if XSH_THREADS_PEEP_CONTEXT + xsh_peep_local_teardown(aTHX_ &MY_CXT.cxt_peep); +#endif + +#if XSH_THREADS_HINTS_CONTEXT + xsh_hints_local_teardown(aTHX_ &MY_CXT.cxt_hints); +#endif + + XSH_LOADED_LOCK; + + if (xsh_clear_loaded_locked(&MY_CXT)) { +#if XSH_THREADS_USER_GLOBAL_TEARDOWN + xsh_user_global_teardown(aTHX); +#endif + +#if XSH_THREADS_HINTS_CONTEXT + xsh_hints_global_teardown(aTHX); +#endif + } + + XSH_LOADED_UNLOCK; + + return; +} + +static void xsh_setup(pTHX) { +#define xsh_setup() xsh_setup(aTHX) + MY_CXT_INIT; /* Takes/release PL_my_ctx_mutex */ + + XSH_LOADED_LOCK; + + if (xsh_set_loaded_locked(&MY_CXT)) { +#if XSH_THREADS_HINTS_CONTEXT + xsh_hints_global_setup(aTHX); +#endif + +#if XSH_THREADS_USER_GLOBAL_SETUP + xsh_user_global_setup(aTHX); +#endif + } + + XSH_LOADED_UNLOCK; + +#if XSH_THREADS_CLONE_NEEDS_DUP + MY_CXT.owner = aTHX; +#endif + +#if XSH_THREADS_HINTS_CONTEXT + xsh_hints_local_setup(aTHX_ &MY_CXT.cxt_hints); +#endif + +#if XSH_THREADS_PEEP_CONTEXT + xsh_peep_local_setup(aTHX_ &MY_CXT.cxt_peep); +#endif + +#if XSH_THREADS_USER_LOCAL_SETUP +# if XSH_THREADS_USER_CONTEXT + xsh_user_local_setup(aTHX_ &XSH_CXT); +# else + xsh_user_local_setup(aTHX); +# endif +#endif + + call_atexit(xsh_teardown, NULL); + + return; +} + +#if XSH_THREADSAFE + +static void xsh_clone(pTHX) { +#define xsh_clone() xsh_clone(aTHX) + const my_cxt_t *old_cxt; + my_cxt_t *new_cxt; + + { + dMY_CXT; + old_cxt = &MY_CXT; + } + + { + int global_setup; + + MY_CXT_CLONE; + new_cxt = &MY_CXT; + + XSH_LOADED_LOCK; + global_setup = xsh_set_loaded_locked(new_cxt); + XSH_ASSERT(!global_setup); + XSH_LOADED_UNLOCK; + +#if XSH_THREADS_CLONE_NEEDS_DUP + new_cxt->owner = aTHX; +#endif + } + + { +#if XSH_THREADS_CLONE_NEEDS_DUP + XSH_DUP_PARAMS_TYPE params; + xsh_dup_params_init(params, old_cxt->owner); +#endif + +#if XSH_THREADS_PEEP_CONTEXT + xsh_peep_clone(aTHX_ &old_cxt->cxt_peep, &new_cxt->cxt_peep); +#endif + +#if XSH_THREADS_HINTS_CONTEXT + xsh_hints_clone(aTHX_ &old_cxt->cxt_hints, &new_cxt->cxt_hints, + xsh_dup_params_ptr(params)); +#endif + +#if XSH_THREADS_USER_CONTEXT +# if XSH_THREADS_USER_CLONE_NEEDS_DUP + xsh_user_clone(aTHX_ &old_cxt->cxt_user, &new_cxt->cxt_user, + xsh_dup_params_ptr(params)); +# else + xsh_user_clone(aTHX_ &old_cxt->cxt_user, &new_cxt->cxt_user); +# endif +#endif + +#if XSH_THREADS_CLONE_NEEDS_DUP + xsh_dup_params_deinit(params); +#endif + } + + return; +} + +#endif /* XSH_THREADSAFE */ + +#endif /* XSH_THREADS_H */ diff --git a/xsh/util.h b/xsh/util.h new file mode 100644 index 0000000..dcc142c --- /dev/null +++ b/xsh/util.h @@ -0,0 +1,97 @@ +#ifndef XSH_UTIL_H +#define XSH_UTIL_H 1 + +#include "caps.h" /* XSH_HAS_PERL() */ + +#ifndef XSH_PACKAGE +# error XSH_PACKAGE must be defined +#endif + +#define XSH_PACKAGE_LEN (sizeof(XSH_PACKAGE)-1) + +#ifdef DEBUGGING +# if XSH_HAS_PERL(5, 8, 9) || XSH_HAS_PERL(5, 9, 3) +# define XSH_ASSERT(C) assert(C) +# else +# define XSH_ASSERT(C) PERL_DEB( \ + ((C) ? ((void) 0) \ + : (Perl_croak_nocontext("Assertion %s failed: file \"" __FILE__ \ + "\", line %d", STRINGIFY(C), __LINE__), \ + (void) 0))) +# endif +#else +# define XSH_ASSERT(C) +#endif + +#undef VOID2 +#ifdef __cplusplus +# define VOID2(T, P) static_cast(P) +#else +# define VOID2(T, P) (P) +#endif + +#ifndef STMT_START +# define STMT_START do +#endif + +#ifndef STMT_END +# define STMT_END while (0) +#endif + +#ifndef dNOOP +# define dNOOP +#endif + +#ifndef NOOP +# define NOOP +#endif + +#if XSH_HAS_PERL(5, 13, 2) +# define XSH_DUP_PARAMS_TYPE CLONE_PARAMS * +# define xsh_dup_params_init(P, O) ((P) = Perl_clone_params_new((O), aTHX)) +# define xsh_dup_params_deinit(P) Perl_clone_params_del(P) +# define xsh_dup_params_ptr(P) (P) +#else +# define XSH_DUP_PARAMS_TYPE CLONE_PARAMS +# define xsh_dup_params_init(P, O) \ + ((P).stashes = newAV()); (P).flags = 0; ((P).proto_perl = (O)) +# define xsh_dup_params_deinit(P) SvREFCNT_dec((P).stashes) +# define xsh_dup_params_ptr(P) &(P) +#endif +#define xsh_dup(S, P) sv_dup((S), (P)) +#define xsh_dup_inc(S, P) SvREFCNT_inc(xsh_dup((S), (P))) + +/* Context for PerlMemShared_*() functions */ +#ifdef PERL_IMPLICIT_SYS +# define pPMS pTHX +# define pPMS_ pTHX_ +# define aPMS aTHX +# define aPMS_ aTHX_ +#else +# define pPMS void +# define pPMS_ +# define aPMS +# define aPMS_ +#endif + +#ifdef USE_ITHREADS +# define XSH_LOCK(M) MUTEX_LOCK(M) +# define XSH_UNLOCK(M) MUTEX_UNLOCK(M) +#else +# define XSH_LOCK(M) NOOP +# define XSH_UNLOCK(M) NOOP +#endif + +#ifndef PTR2nat +# define PTR2nat(p) (PTRV)(p) +#endif + +#ifndef DPTR2FPTR +# define DPTR2FPTR(t,p) ((t)PTR2nat(p)) +#endif + +#ifndef FPTR2DPTR +# define FPTR2DPTR(t,p) ((t)PTR2nat(p)) +#endif + +#endif /* XSH_UTIL_H */