#include "perl.h"
#include "XSUB.h"
+#define __PACKAGE__ "indirect"
+#define __PACKAGE_LEN__ (sizeof(__PACKAGE__)-1)
+
+/* --- Compatibility wrappers ---------------------------------------------- */
+
+#ifndef NOOP
+# define NOOP
+#endif
+
+#ifndef dNOOP
+# define dNOOP
+#endif
+
+#ifndef Newx
+# define Newx(v, n, c) New(0, v, n, c)
+#endif
+
#ifndef SvPV_const
# define SvPV_const SvPV
#endif
# define SvPVX_const SvPVX
#endif
-/* ... Hints ............................................................... */
+#ifndef SvREFCNT_inc_simple_void_NN
+# ifdef SvREFCNT_inc_simple_NN
+# define SvREFCNT_inc_simple_void_NN SvREFCNT_inc_simple_NN
+# else
+# define SvREFCNT_inc_simple_void_NN SvREFCNT_inc
+# endif
+#endif
-STATIC U32 indirect_hash = 0;
+#ifndef sv_catpvn_nomg
+# define sv_catpvn_nomg sv_catpvn
+#endif
-STATIC IV indirect_hint(pTHX) {
-#define indirect_hint() indirect_hint(aTHX)
- SV *id = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
- NULL,
- "indirect", 8,
- 0,
- indirect_hash);
- return (id && SvOK(id) && SvIOK(id)) ? SvIV(id) : 0;
+#ifndef mPUSHp
+# define mPUSHp(P, L) PUSHs(sv_2mortal(newSVpvn((P), (L))))
+#endif
+
+#ifndef mPUSHu
+# define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U)))
+#endif
+
+#ifndef HvNAME_get
+# define HvNAME_get(H) HvNAME(H)
+#endif
+
+#ifndef HvNAMELEN_get
+# define HvNAMELEN_get(H) strlen(HvNAME_get(H))
+#endif
+
+#define I_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
+
+#if I_HAS_PERL(5, 10, 0) || defined(PL_parser)
+# ifndef PL_linestr
+# define PL_linestr PL_parser->linestr
+# endif
+# ifndef PL_bufptr
+# define PL_bufptr PL_parser->bufptr
+# endif
+# ifndef PL_oldbufptr
+# define PL_oldbufptr PL_parser->oldbufptr
+# endif
+#else
+# ifndef PL_linestr
+# define PL_linestr PL_Ilinestr
+# endif
+# ifndef PL_bufptr
+# define PL_bufptr PL_Ibufptr
+# endif
+# ifndef PL_oldbufptr
+# define PL_oldbufptr PL_Ioldbufptr
+# endif
+#endif
+
+#ifndef I_WORKAROUND_REQUIRE_PROPAGATION
+# define I_WORKAROUND_REQUIRE_PROPAGATION !I_HAS_PERL(5, 10, 1)
+#endif
+
+/* ... Thread safety and multiplicity ...................................... */
+
+/* Safe unless stated otherwise in Makefile.PL */
+#ifndef I_FORKSAFE
+# define I_FORKSAFE 1
+#endif
+
+#ifndef I_MULTIPLICITY
+# if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
+# define I_MULTIPLICITY 1
+# else
+# define I_MULTIPLICITY 0
+# endif
+#endif
+#if I_MULTIPLICITY && !defined(tTHX)
+# define tTHX PerlInterpreter*
+#endif
+
+#if I_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 I_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 I_THREADSAFE 0
+# undef dMY_CXT
+# define dMY_CXT dNOOP
+# undef MY_CXT
+# define MY_CXT indirect_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 ................................................... */
+
+#if I_WORKAROUND_REQUIRE_PROPAGATION
+
+typedef struct {
+ SV *code;
+ IV require_tag;
+} indirect_hint_t;
+
+#define I_HINT_STRUCT 1
+
+#define I_HINT_CODE(H) ((H)->code)
+
+#define I_HINT_FREE(H) { \
+ indirect_hint_t *h = (H); \
+ SvREFCNT_dec(h->code); \
+ PerlMemShared_free(h); \
}
-/* ... op -> source position ............................................... */
+#else /* I_WORKAROUND_REQUIRE_PROPAGATION */
+
+typedef SV indirect_hint_t;
+
+#define I_HINT_STRUCT 0
+
+#define I_HINT_CODE(H) (H)
+
+#define I_HINT_FREE(H) SvREFCNT_dec(H);
+
+#endif /* !I_WORKAROUND_REQUIRE_PROPAGATION */
+
+#if I_THREADSAFE
+
+#define PTABLE_NAME ptable_hints
+#define PTABLE_VAL_FREE(V) I_HINT_FREE(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))
+
+#endif /* I_THREADSAFE */
+
+/* Define the op->str ptable here because we need to be able to clean it during
+ * thread cleanup. */
+
+typedef struct {
+ char *buf;
+ STRLEN pos;
+ STRLEN size;
+ STRLEN len;
+ line_t line;
+} indirect_op_info_t;
+
+#define PTABLE_NAME ptable
+#define PTABLE_VAL_FREE(V) if (V) { Safefree(((indirect_op_info_t *) (V))->buf); Safefree(V); }
+
+#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_delete(T, K) ptable_delete(aTHX_ (T), (K))
+#define ptable_clear(T) ptable_clear(aTHX_ (T))
+#define ptable_free(T) ptable_free(aTHX_ (T))
-STATIC HV *indirect_map = NULL;
-STATIC const char *indirect_linestr = NULL;
+#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
-STATIC void indirect_map_store(pTHX_ const OP *o, const char *src, SV *sv) {
-#define indirect_map_store(O, S, N) indirect_map_store(aTHX_ (O), (S), (N))
- char buf[32];
- const char *pl_linestr;
- SV *val;
+typedef struct {
+#if I_THREADSAFE
+ ptable *tbl; /* It really is a ptable_hints */
+ tTHX owner;
+#endif
+ ptable *map;
+ SV *global_code;
+} my_cxt_t;
+
+START_MY_CXT
+
+#if I_THREADSAFE
+
+STATIC SV *indirect_clone(pTHX_ SV *sv, tTHX owner) {
+#define indirect_clone(S, O) indirect_clone(aTHX_ (S), (O))
+ CLONE_PARAMS param;
+ AV *stashes = NULL;
+ SV *dupsv;
+
+ if (!sv)
+ return NULL;
+
+ if (SvTYPE(sv) == SVt_PVHV && HvNAME_get(sv))
+ stashes = newAV();
+
+ param.stashes = stashes;
+ param.flags = 0;
+ param.proto_perl = owner;
+
+ dupsv = sv_dup(sv, ¶m);
+
+ if (stashes) {
+ av_undef(stashes);
+ SvREFCNT_dec(stashes);
+ }
+
+ return SvREFCNT_inc(dupsv);
+}
+
+STATIC void indirect_ptable_clone(pTHX_ ptable_ent *ent, void *ud_) {
+ my_cxt_t *ud = ud_;
+ indirect_hint_t *h1 = ent->val;
+ indirect_hint_t *h2;
+
+ if (ud->owner == aTHX)
+ return;
+
+#if I_HINT_STRUCT
+
+ h2 = PerlMemShared_malloc(sizeof *h2);
+ h2->code = indirect_clone(h1->code, ud->owner);
+#if I_WORKAROUND_REQUIRE_PROPAGATION
+ h2->require_tag = PTR2IV(indirect_clone(INT2PTR(SV *, h1->require_tag),
+ ud->owner));
+#endif
+
+#else /* I_HINT_STRUCT */
+
+ h2 = indirect_clone(h1, ud->owner);
+
+#endif /* !I_HINT_STRUCT */
+
+ ptable_hints_store(ud->tbl, ent->key, h2);
+}
+
+#include "reap.h"
+
+STATIC void indirect_thread_cleanup(pTHX_ void *ud) {
+ dMY_CXT;
+
+ SvREFCNT_dec(MY_CXT.global_code);
+ ptable_free(MY_CXT.map);
+ ptable_hints_free(MY_CXT.tbl);
+}
+
+#endif /* I_THREADSAFE */
+
+#if I_WORKAROUND_REQUIRE_PROPAGATION
+STATIC IV indirect_require_tag(pTHX) {
+#define indirect_require_tag() indirect_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;
+ }
- /* When lex_inwhat is set, we're in a quotelike environment (qq, qr, but not q)
- * In this case the linestr has temporarly changed, but the old buffer should
- * still be alive somewhere. */
+get_enclosing_cv:
+ for (outside = CvOUTSIDE(cv); outside; outside = CvOUTSIDE(cv))
+ cv = outside;
- if (!PL_parser->lex_inwhat) {
- pl_linestr = SvPVX_const(PL_parser->linestr);
- if (indirect_linestr != pl_linestr) {
- hv_clear(indirect_map);
- indirect_linestr = pl_linestr;
+ return PTR2IV(cv);
+}
+#endif /* I_WORKAROUND_REQUIRE_PROPAGATION */
+
+STATIC SV *indirect_tag(pTHX_ SV *value) {
+#define indirect_tag(V) indirect_tag(aTHX_ (V))
+ indirect_hint_t *h;
+ SV *code = NULL;
+
+ if (SvROK(value)) {
+ value = SvRV(value);
+ if (SvTYPE(value) >= SVt_PVCV) {
+ code = value;
+ SvREFCNT_inc_simple_void_NN(code);
}
}
- val = newSVsv(sv);
- SvUPGRADE(val, SVt_PVIV);
- SvUVX(val) = PTR2UV(src);
- SvIOK_on(val);
- SvIsUV_on(val);
- if (!hv_store(indirect_map, buf, sprintf(buf, "%u", PTR2UV(o)), val, 0))
- SvREFCNT_dec(val);
+#if I_HINT_STRUCT
+ h = PerlMemShared_malloc(sizeof *h);
+ h->code = code;
+# if I_WORKAROUND_REQUIRE_PROPAGATION
+ h->require_tag = indirect_require_tag();
+# endif /* I_WORKAROUND_REQUIRE_PROPAGATION */
+#else /* I_HINT_STRUCT */
+ h = code;
+#endif /* !I_HINT_STRUCT */
+
+#if I_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_hints_store(MY_CXT.tbl, h, h);
+ }
+#endif /* I_THREADSAFE */
+
+ return newSViv(PTR2IV(h));
+}
+
+STATIC SV *indirect_detag(pTHX_ const SV *hint) {
+#define indirect_detag(H) indirect_detag(aTHX_ (H))
+ indirect_hint_t *h;
+#if I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION
+ dMY_CXT;
+#endif
+
+ h = INT2PTR(indirect_hint_t *, SvIVX(hint));
+#if I_THREADSAFE
+ h = ptable_fetch(MY_CXT.tbl, h);
+#endif /* I_THREADSAFE */
+
+#if I_WORKAROUND_REQUIRE_PROPAGATION
+ if (indirect_require_tag() != h->require_tag)
+ return MY_CXT.global_code;
+#endif /* I_WORKAROUND_REQUIRE_PROPAGATION */
+
+ return I_HINT_CODE(h);
}
-STATIC const char *indirect_map_fetch(pTHX_ const OP *o, SV ** const name) {
-#define indirect_map_fetch(O, S) indirect_map_fetch(aTHX_ (O), (S))
- char buf[32];
- SV **val;
+STATIC U32 indirect_hash = 0;
+
+STATIC SV *indirect_hint(pTHX) {
+#define indirect_hint() indirect_hint(aTHX)
+ SV *hint = NULL;
- if (indirect_linestr != SvPVX_const(PL_parser->linestr))
+ if (IN_PERL_RUNTIME)
return NULL;
- val = hv_fetch(indirect_map, buf, sprintf(buf, "%u", PTR2UV(o)), 0);
- if (!val) {
- *name = NULL;
+#if I_HAS_PERL(5, 10, 0) || defined(PL_parser)
+ if (!PL_parser)
return NULL;
+#endif
+
+#ifdef cop_hints_fetch_pvn
+ hint = cop_hints_fetch_pvn(PL_curcop, __PACKAGE__, __PACKAGE_LEN__,
+ indirect_hash, 0);
+#elif I_HAS_PERL(5, 9, 5)
+ hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
+ NULL,
+ __PACKAGE__, __PACKAGE_LEN__,
+ 0,
+ indirect_hash);
+#else
+ {
+ SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__, 0);
+ if (val)
+ hint = *val;
}
+#endif
- *name = *val;
- return INT2PTR(const char *, SvUVX(*val));
+ if (hint && SvIOK(hint))
+ return indirect_detag(hint);
+ else {
+ dMY_CXT;
+ return MY_CXT.global_code;
+ }
}
-STATIC const char *indirect_find(pTHX_ SV *sv, const char *s) {
-#define indirect_find(N, S) indirect_find(aTHX_ (N), (S))
+/* ... op -> source position ............................................... */
+
+STATIC void indirect_map_store(pTHX_ const OP *o, STRLEN pos, SV *sv, line_t line) {
+#define indirect_map_store(O, P, N, L) indirect_map_store(aTHX_ (O), (P), (N), (L))
+ indirect_op_info_t *oi;
+ const char *s;
STRLEN len;
- const char *p = NULL, *r = SvPV_const(sv, len);
+ dMY_CXT;
+
+ if (!(oi = ptable_fetch(MY_CXT.map, o))) {
+ Newx(oi, 1, indirect_op_info_t);
+ ptable_store(MY_CXT.map, o, oi);
+ oi->buf = NULL;
+ oi->size = 0;
+ }
+
+ if (sv) {
+ s = SvPV_const(sv, len);
+ } else {
+ s = "{";
+ len = 1;
+ }
+
+ if (len > oi->size) {
+ Safefree(oi->buf);
+ Newx(oi->buf, len, char);
+ oi->size = len;
+ }
+ Copy(s, oi->buf, len, char);
+
+ oi->len = len;
+ oi->pos = pos;
+ oi->line = line;
+}
+
+STATIC const indirect_op_info_t *indirect_map_fetch(pTHX_ const OP *o) {
+#define indirect_map_fetch(O) indirect_map_fetch(aTHX_ (O))
+ dMY_CXT;
+
+ return ptable_fetch(MY_CXT.map, o);
+}
+
+STATIC void indirect_map_delete(pTHX_ const OP *o) {
+#define indirect_map_delete(O) indirect_map_delete(aTHX_ (O))
+ dMY_CXT;
+
+ ptable_delete(MY_CXT.map, o);
+}
- if (!len)
- return s;
+/* --- Check functions ----------------------------------------------------- */
- p = strstr(s, r);
- while (p) {
- p += len;
- if (!isALNUM(*p))
+STATIC int indirect_find(pTHX_ SV *sv, const char *s, STRLEN *pos) {
+#define indirect_find(N, S, P) indirect_find(aTHX_ (N), (S), (P))
+ STRLEN len;
+ const char *p, *r = SvPV_const(sv, len);
+
+ if (len >= 1 && *r == '$') {
+ ++r;
+ --len;
+ s = strchr(s, '$');
+ if (!s)
+ return 0;
+ }
+
+ p = s;
+ while (1) {
+ p = strstr(p, r);
+ if (!p)
+ return 0;
+ if (!isALNUM(p[len]))
break;
- p = strstr(p + 1, r);
+ /* p points to a word that has r as prefix, skip the rest of the word */
+ p += len + 1;
+ while (isALNUM(*p))
+ ++p;
}
- return p;
+ *pos = p - SvPVX_const(PL_linestr);
+
+ return 1;
}
/* ... ck_const ............................................................ */
STATIC OP *(*indirect_old_ck_const)(pTHX_ OP *) = 0;
STATIC OP *indirect_ck_const(pTHX_ OP *o) {
+ o = indirect_old_ck_const(aTHX_ o);
+
if (indirect_hint()) {
SV *sv = cSVOPo_sv;
- if (SvPOK(sv) && (SvTYPE(sv) >= SVt_PV))
- indirect_map_store(o, indirect_find(sv, PL_parser->oldbufptr), sv);
+
+ if (SvPOK(sv) && (SvTYPE(sv) >= SVt_PV)) {
+ STRLEN pos;
+
+ if (indirect_find(sv, PL_oldbufptr, &pos)) {
+ indirect_map_store(o, pos, sv, CopLINE(&PL_compiling));
+ return o;
+ }
+ }
}
- return CALL_FPTR(indirect_old_ck_const)(aTHX_ o);
+ indirect_map_delete(o);
+ return o;
}
/* ... ck_rv2sv ............................................................ */
STATIC OP *indirect_ck_rv2sv(pTHX_ OP *o) {
if (indirect_hint()) {
OP *op = cUNOPo->op_first;
- SV *name = cSVOPx_sv(op);
- if (SvPOK(name) && (SvTYPE(name) >= SVt_PV)) {
- SV *sv = sv_2mortal(newSVpvn("$", 1));
- sv_catsv(sv, name);
- indirect_map_store(o, indirect_find(sv, PL_parser->oldbufptr), sv);
+ SV *sv;
+ const char *name = NULL;
+ STRLEN pos, len;
+ OPCODE type = (OPCODE) op->op_type;
+
+ switch (type) {
+ case OP_GV:
+ case OP_GVSV: {
+ GV *gv = cGVOPx_gv(op);
+ name = GvNAME(gv);
+ len = GvNAMELEN(gv);
+ break;
+ }
+ default:
+ if ((PL_opargs[type] & OA_CLASS_MASK) == OA_SVOP) {
+ SV *nsv = cSVOPx_sv(op);
+ if (SvPOK(nsv) && (SvTYPE(nsv) >= SVt_PV))
+ name = SvPV_const(nsv, len);
+ }
}
+ if (!name)
+ goto done;
+
+ sv = sv_2mortal(newSVpvn("$", 1));
+ sv_catpvn_nomg(sv, name, len);
+ if (!indirect_find(sv, PL_oldbufptr, &pos)) {
+ /* If it failed, retry without the current stash */
+ const char *stash = HvNAME_get(PL_curstash);
+ STRLEN stashlen = HvNAMELEN_get(PL_curstash);
+
+ if ((len < stashlen + 2) || strnNE(name, stash, stashlen)
+ || name[stashlen] != ':' || name[stashlen+1] != ':') {
+ /* Failed again ? Try to remove main */
+ stash = "main";
+ stashlen = 4;
+ if ((len < stashlen + 2) || strnNE(name, stash, stashlen)
+ || name[stashlen] != ':' || name[stashlen+1] != ':')
+ goto done;
+ }
+
+ sv_setpvn(sv, "$", 1);
+ stashlen += 2;
+ sv_catpvn_nomg(sv, name + stashlen, len - stashlen);
+ if (!indirect_find(sv, PL_oldbufptr, &pos))
+ goto done;
+ }
+
+ o = indirect_old_ck_rv2sv(aTHX_ o);
+
+ indirect_map_store(o, pos, sv, CopLINE(&PL_compiling));
+ return o;
}
- return CALL_FPTR(indirect_old_ck_rv2sv)(aTHX_ o);
+done:
+ o = indirect_old_ck_rv2sv(aTHX_ o);
+
+ indirect_map_delete(o);
+ return o;
}
/* ... ck_padany ........................................................... */
STATIC OP *(*indirect_old_ck_padany)(pTHX_ OP *) = 0;
STATIC OP *indirect_ck_padany(pTHX_ OP *o) {
+ o = indirect_old_ck_padany(aTHX_ o);
+
if (indirect_hint()) {
SV *sv;
- const char *s = PL_parser->oldbufptr, *t = PL_parser->bufptr - 1;
+ const char *s = PL_oldbufptr, *t = PL_bufptr - 1;
while (s < t && isSPACE(*s)) ++s;
- while (t > s && isSPACE(*t)) --t;
- sv = sv_2mortal(newSVpvn(s, t - s + 1));
+ if (*s == '$' && ++s <= t) {
+ while (s < t && isSPACE(*s)) ++s;
+ while (s < t && isSPACE(*t)) --t;
+ sv = sv_2mortal(newSVpvn("$", 1));
+ sv_catpvn_nomg(sv, s, t - s + 1);
+ indirect_map_store(o, s - SvPVX_const(PL_linestr),
+ sv, CopLINE(&PL_compiling));
+ return o;
+ }
+ }
- indirect_map_store(o, s, sv);
+ indirect_map_delete(o);
+ return o;
+}
+
+/* ... ck_scope ............................................................ */
+
+STATIC OP *(*indirect_old_ck_scope) (pTHX_ OP *) = 0;
+STATIC OP *(*indirect_old_ck_lineseq)(pTHX_ OP *) = 0;
+
+STATIC OP *indirect_ck_scope(pTHX_ OP *o) {
+ OP *(*old_ck)(pTHX_ OP *) = 0;
+
+ switch (o->op_type) {
+ case OP_SCOPE: old_ck = indirect_old_ck_scope; break;
+ case OP_LINESEQ: old_ck = indirect_old_ck_lineseq; break;
+ }
+ o = old_ck(aTHX_ o);
+
+ if (indirect_hint()) {
+ indirect_map_store(o, PL_oldbufptr - SvPVX_const(PL_linestr),
+ NULL, CopLINE(&PL_compiling));
+ return o;
}
- return CALL_FPTR(indirect_old_ck_padany)(aTHX_ o);
+ indirect_map_delete(o);
+ return o;
}
+/* We don't need to clean the map entries for leave ops because they can only
+ * be created by mutating from a lineseq. */
+
/* ... ck_method ........................................................... */
STATIC OP *(*indirect_old_ck_method)(pTHX_ OP *) = 0;
STATIC OP *indirect_ck_method(pTHX_ OP *o) {
if (indirect_hint()) {
OP *op = cUNOPo->op_first;
- SV *sv;
- const char *s = indirect_map_fetch(op, &sv);
- if (!s) {
- sv = cSVOPx_sv(op);
- if (!SvPOK(sv) || (SvTYPE(sv) < SVt_PV))
+
+ /* Indirect method call is only possible when the method is a bareword, so
+ * don't trip up on $obj->$meth. */
+ if (op && op->op_type == OP_CONST) {
+ const indirect_op_info_t *oi = indirect_map_fetch(op);
+ STRLEN pos;
+ line_t line;
+ SV *sv;
+
+ if (!oi)
goto done;
- sv = sv_mortalcopy(sv);
- s = indirect_find(sv, PL_parser->oldbufptr);
+
+ sv = sv_2mortal(newSVpvn(oi->buf, oi->len));
+ pos = oi->pos;
+ /* Keep the old line so that we really point to the first line of the
+ * expression. */
+ line = oi->line;
+
+ o = indirect_old_ck_method(aTHX_ o);
+ /* o may now be a method_named */
+
+ indirect_map_store(o, pos, sv, line);
+ return o;
}
- o = CALL_FPTR(indirect_old_ck_method)(aTHX_ o);
- /* o may now be a method_named */
- indirect_map_store(o, s, sv);
+ }
+
+done:
+ o = indirect_old_ck_method(aTHX_ o);
+
+ indirect_map_delete(o);
+ return o;
+}
+
+/* ... ck_method_named ..................................................... */
+
+/* "use foo/no foo" compiles its call to import/unimport directly to a
+ * method_named op. */
+
+STATIC OP *(*indirect_old_ck_method_named)(pTHX_ OP *) = 0;
+
+STATIC OP *indirect_ck_method_named(pTHX_ OP *o) {
+ if (indirect_hint()) {
+ STRLEN pos;
+ line_t line;
+ SV *sv;
+
+ sv = cSVOPo_sv;
+ if (!SvPOK(sv) || (SvTYPE(sv) < SVt_PV))
+ goto done;
+ sv = sv_mortalcopy(sv);
+
+ if (!indirect_find(sv, PL_oldbufptr, &pos))
+ goto done;
+ line = CopLINE(&PL_compiling);
+
+ o = indirect_old_ck_method_named(aTHX_ o);
+
+ indirect_map_store(o, pos, sv, line);
return o;
}
done:
- return CALL_FPTR(indirect_old_ck_method)(aTHX_ o);
+ o = indirect_old_ck_method_named(aTHX_ o);
+
+ indirect_map_delete(o);
+ return o;
}
/* ... ck_entersub ......................................................... */
-STATIC const char indirect_msg[] = "Indirect call of method \"%s\" on object \"%s\"";
-
STATIC OP *(*indirect_old_ck_entersub)(pTHX_ OP *) = 0;
STATIC OP *indirect_ck_entersub(pTHX_ OP *o) {
- LISTOP *op;
- OP *om, *oo;
- IV hint = indirect_hint();
-
- if (hint) {
- const char *pm, *po;
- SV *svm, *svo;
- op = (LISTOP *) o;
- while (op->op_type != OP_PUSHMARK)
- op = (LISTOP *) op->op_first;
- oo = op->op_sibling;
- om = oo;
- while (om->op_sibling)
- om = om->op_sibling;
- if (om->op_type == OP_METHOD)
- om = cUNOPx(om)->op_first;
- else if (om->op_type != OP_METHOD_NAMED)
+ SV *code = indirect_hint();
+
+ o = indirect_old_ck_entersub(aTHX_ o);
+
+ if (code) {
+ const indirect_op_info_t *moi, *ooi;
+ OP *mop, *oop;
+ LISTOP *lop;
+
+ oop = o;
+ do {
+ lop = (LISTOP *) oop;
+ if (!(lop->op_flags & OPf_KIDS))
+ goto done;
+ oop = lop->op_first;
+ } while (oop->op_type != OP_PUSHMARK);
+ oop = oop->op_sibling;
+ mop = lop->op_last;
+
+ if (!oop)
+ goto done;
+
+ switch (oop->op_type) {
+ case OP_CONST:
+ case OP_RV2SV:
+ case OP_PADSV:
+ case OP_SCOPE:
+ case OP_LEAVE:
+ break;
+ default:
+ goto done;
+ }
+
+ if (mop->op_type == OP_METHOD)
+ mop = cUNOPx(mop)->op_first;
+ else if (mop->op_type != OP_METHOD_NAMED)
+ goto done;
+
+ moi = indirect_map_fetch(mop);
+ if (!moi)
+ goto done;
+
+ ooi = indirect_map_fetch(oop);
+ if (!ooi)
goto done;
- pm = indirect_map_fetch(om, &svm);
- po = indirect_map_fetch(oo, &svo);
- if (pm && po && pm < po) {
- const char *psvm = SvPV_nolen_const(svm), *psvo = SvPV_nolen_const(svo);
- if (hint == 2)
- croak(indirect_msg, psvm, psvo);
- else
- warn(indirect_msg, psvm, psvo);
+
+ /* When positions are identical, the method and the object must have the
+ * same name. But it also means that it is an indirect call, as "foo->foo"
+ * results in different positions. */
+ if (moi->pos <= ooi->pos) {
+ SV *file;
+ dSP;
+
+ ENTER;
+ SAVETMPS;
+
+#ifdef USE_ITHREADS
+ file = sv_2mortal(newSVpv(CopFILE(&PL_compiling), 0));
+#else
+ file = sv_mortalcopy(CopFILESV(&PL_compiling));
+#endif
+
+ PUSHMARK(SP);
+ EXTEND(SP, 4);
+ mPUSHp(ooi->buf, ooi->len);
+ mPUSHp(moi->buf, moi->len);
+ PUSHs(file);
+ mPUSHu(moi->line);
+ PUTBACK;
+
+ call_sv(code, G_VOID);
+
+ PUTBACK;
+
+ FREETMPS;
+ LEAVE;
}
}
done:
- return CALL_FPTR(indirect_old_ck_entersub)(aTHX_ o);
+ return o;
}
STATIC U32 indirect_initialized = 0;
+STATIC void indirect_teardown(pTHX_ void *root) {
+ if (!indirect_initialized)
+ return;
+
+#if I_MULTIPLICITY
+ if (aTHX != root)
+ return;
+#endif
+
+ {
+ dMY_CXT;
+ ptable_free(MY_CXT.map);
+#if I_THREADSAFE
+ ptable_hints_free(MY_CXT.tbl);
+#endif
+ }
+
+ PL_check[OP_CONST] = MEMBER_TO_FPTR(indirect_old_ck_const);
+ indirect_old_ck_const = 0;
+ PL_check[OP_RV2SV] = MEMBER_TO_FPTR(indirect_old_ck_rv2sv);
+ indirect_old_ck_rv2sv = 0;
+ PL_check[OP_PADANY] = MEMBER_TO_FPTR(indirect_old_ck_padany);
+ indirect_old_ck_padany = 0;
+ PL_check[OP_SCOPE] = MEMBER_TO_FPTR(indirect_old_ck_scope);
+ indirect_old_ck_scope = 0;
+ PL_check[OP_LINESEQ] = MEMBER_TO_FPTR(indirect_old_ck_lineseq);
+ indirect_old_ck_lineseq = 0;
+
+ PL_check[OP_METHOD] = MEMBER_TO_FPTR(indirect_old_ck_method);
+ indirect_old_ck_method = 0;
+ PL_check[OP_METHOD_NAMED] = MEMBER_TO_FPTR(indirect_old_ck_method_named);
+ indirect_old_ck_method_named = 0;
+ PL_check[OP_ENTERSUB] = MEMBER_TO_FPTR(indirect_old_ck_entersub);
+ indirect_old_ck_entersub = 0;
+
+ indirect_initialized = 0;
+}
+
+STATIC void indirect_setup(pTHX) {
+#define indirect_setup() indirect_setup(aTHX)
+ if (indirect_initialized)
+ return;
+
+ {
+ MY_CXT_INIT;
+#if I_THREADSAFE
+ MY_CXT.tbl = ptable_new();
+ MY_CXT.owner = aTHX;
+#endif
+ MY_CXT.map = ptable_new();
+ MY_CXT.global_code = NULL;
+ }
+
+ indirect_old_ck_const = PL_check[OP_CONST];
+ PL_check[OP_CONST] = MEMBER_TO_FPTR(indirect_ck_const);
+ indirect_old_ck_rv2sv = PL_check[OP_RV2SV];
+ PL_check[OP_RV2SV] = MEMBER_TO_FPTR(indirect_ck_rv2sv);
+ indirect_old_ck_padany = PL_check[OP_PADANY];
+ PL_check[OP_PADANY] = MEMBER_TO_FPTR(indirect_ck_padany);
+ indirect_old_ck_scope = PL_check[OP_SCOPE];
+ PL_check[OP_SCOPE] = MEMBER_TO_FPTR(indirect_ck_scope);
+ indirect_old_ck_lineseq = PL_check[OP_LINESEQ];
+ PL_check[OP_LINESEQ] = MEMBER_TO_FPTR(indirect_ck_scope);
+
+ indirect_old_ck_method = PL_check[OP_METHOD];
+ PL_check[OP_METHOD] = MEMBER_TO_FPTR(indirect_ck_method);
+ indirect_old_ck_method_named = PL_check[OP_METHOD_NAMED];
+ PL_check[OP_METHOD_NAMED] = MEMBER_TO_FPTR(indirect_ck_method_named);
+ indirect_old_ck_entersub = PL_check[OP_ENTERSUB];
+ PL_check[OP_ENTERSUB] = MEMBER_TO_FPTR(indirect_ck_entersub);
+
+#if I_MULTIPLICITY
+ call_atexit(indirect_teardown, aTHX);
+#else
+ call_atexit(indirect_teardown, NULL);
+#endif
+
+ indirect_initialized = 1;
+}
+
+STATIC U32 indirect_booted = 0;
+
/* --- XS ------------------------------------------------------------------ */
MODULE = indirect PACKAGE = indirect
-PROTOTYPES: DISABLE
+PROTOTYPES: ENABLE
BOOT:
{
- if (!indirect_initialized++) {
- PERL_HASH(indirect_hash, "indirect", 8);
- indirect_map = newHV();
- indirect_old_ck_const = PL_check[OP_CONST];
- PL_check[OP_CONST] = MEMBER_TO_FPTR(indirect_ck_const);
- indirect_old_ck_rv2sv = PL_check[OP_RV2SV];
- PL_check[OP_RV2SV] = MEMBER_TO_FPTR(indirect_ck_rv2sv);
- indirect_old_ck_padany = PL_check[OP_PADANY];
- PL_check[OP_PADANY] = MEMBER_TO_FPTR(indirect_ck_padany);
- indirect_old_ck_method = PL_check[OP_METHOD];
- PL_check[OP_METHOD] = MEMBER_TO_FPTR(indirect_ck_method);
- indirect_old_ck_entersub = PL_check[OP_ENTERSUB];
- PL_check[OP_ENTERSUB] = MEMBER_TO_FPTR(indirect_ck_entersub);
+ if (!indirect_booted++) {
+ HV *stash;
+
+ PERL_HASH(indirect_hash, __PACKAGE__, __PACKAGE_LEN__);
+
+ stash = gv_stashpvn(__PACKAGE__, __PACKAGE_LEN__, 1);
+ newCONSTSUB(stash, "I_THREADSAFE", newSVuv(I_THREADSAFE));
+ newCONSTSUB(stash, "I_FORKSAFE", newSVuv(I_FORKSAFE));
}
+
+ indirect_setup();
}
+
+#if I_THREADSAFE
+
+void
+CLONE(...)
+PROTOTYPE: DISABLE
+PREINIT:
+ ptable *t;
+ SV *global_code_dup;
+PPCODE:
+ {
+ my_cxt_t ud;
+ dMY_CXT;
+ ud.tbl = t = ptable_new();
+ ud.owner = MY_CXT.owner;
+ ptable_walk(MY_CXT.tbl, indirect_ptable_clone, &ud);
+ global_code_dup = indirect_clone(MY_CXT.global_code, MY_CXT.owner);
+ }
+ {
+ MY_CXT_CLONE;
+ MY_CXT.map = ptable_new();
+ MY_CXT.tbl = t;
+ MY_CXT.owner = aTHX;
+ MY_CXT.global_code = global_code_dup;
+ }
+ reap(3, indirect_thread_cleanup, NULL);
+ XSRETURN(0);
+
+#endif
+
+SV *
+_tag(SV *value)
+PROTOTYPE: $
+CODE:
+ RETVAL = indirect_tag(value);
+OUTPUT:
+ RETVAL
+
+void
+_global(SV *code)
+PROTOTYPE: $
+PPCODE:
+ if (!SvOK(code))
+ code = NULL;
+ else if (SvROK(code))
+ code = SvRV(code);
+ {
+ dMY_CXT;
+ SvREFCNT_dec(MY_CXT.global_code);
+ MY_CXT.global_code = SvREFCNT_inc(code);
+ }
+ XSRETURN(0);
projects / perl / modules / indirect.git / blobdiff