# define SvPVX_const SvPVX
#endif
+#ifndef SvREFCNT_inc_simple_NN
+# define SvREFCNT_inc_simple_NN SvREFCNT_inc
+#endif
+
#ifndef sv_catpvn_nomg
# define sv_catpvn_nomg sv_catpvn
#endif
# define HvNAMELEN_get(H) strlen(HvNAME_get(H))
#endif
+#ifndef ENTER_with_name
+# define ENTER_with_name(N) ENTER
+#endif
+
+#ifndef LEAVE_with_name
+# define LEAVE_with_name(N) LEAVE
+#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)
/* ... 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
/* ... Thread-safe hints ................................................... */
-/* If any of those are true, we need to store the hint in a global table. */
-
-#if I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION
+#if I_WORKAROUND_REQUIRE_PROPAGATION
typedef struct {
- SV *code;
-#if I_WORKAROUND_REQUIRE_PROPAGATION
- I32 requires;
-#endif
+ SV *code;
+ IV cxreq;
} indirect_hint_t;
-#define PTABLE_NAME ptable_hints
+#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); \
+}
+
+#else /* I_WORKAROUND_REQUIRE_PROPAGATION */
+
+typedef SV indirect_hint_t;
+
+#define I_HINT_STRUCT 0
+
+#define I_HINT_CODE(H) (H)
-#define PTABLE_VAL_FREE(V) \
- { indirect_hint_t *h = (V); SvREFCNT_dec(h->code); PerlMemShared_free(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 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 || I_WORKAROUND_REQUIRE_PROPAGATION */
+#endif /* I_THREADSAFE */
/* Define the op->str ptable here because we need to be able to clean it during
* thread cleanup. */
const char *pos;
char *buf;
STRLEN len, size;
+ line_t line;
} indirect_op_info_t;
#define PTABLE_NAME ptable
#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
typedef struct {
-#if I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION
+#if I_THREADSAFE
ptable *tbl; /* It really is a ptable_hints */
+ tTHX owner;
#endif
ptable *map;
const char *linestr;
-#if I_THREADSAFE
- tTHX owner;
-#endif
} my_cxt_t;
START_MY_CXT
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 = PerlMemShared_malloc(sizeof *h2);
+ indirect_hint_t *h2;
- *h2 = *h1;
+ if (ud->owner == aTHX)
+ return;
- if (ud->owner != aTHX)
- h2->code = indirect_clone(h1->code, ud->owner);
+#if I_HINT_STRUCT
- ptable_hints_store(ud->tbl, ent->key, h2);
+ h2 = PerlMemShared_malloc(sizeof *h2);
+ h2->code = indirect_clone(h1->code, ud->owner);
SvREFCNT_inc(h2->code);
+#if I_WORKAROUND_REQUIRE_PROPAGATION
+ h2->cxreq = h1->cxreq;
+#endif
+
+#else /* I_HINT_STRUCT */
+
+ h2 = indirect_clone(h1, ud->owner);
+ SvREFCNT_inc(h2);
+
+#endif /* !I_HINT_STRUCT */
+
+ ptable_hints_store(ud->tbl, ent->key, h2);
}
STATIC void indirect_thread_cleanup(pTHX_ void *);
#endif /* I_THREADSAFE */
-#if I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION
-
-STATIC SV *indirect_tag(pTHX_ SV *value) {
-#define indirect_tag(V) indirect_tag(aTHX_ (V))
- indirect_hint_t *h;
- dMY_CXT;
+#if I_WORKAROUND_REQUIRE_PROPAGATION
+STATIC IV indirect_require_tag(pTHX) {
+#define indirect_require_tag() indirect_require_tag(aTHX)
+ const PERL_SI *si;
- value = SvOK(value) && SvROK(value) ? SvRV(value) : NULL;
+ for (si = PL_curstackinfo; si; si = si->si_prev) {
+ I32 cxix;
- h = PerlMemShared_malloc(sizeof *h);
- h->code = SvREFCNT_inc(value);
+ for (cxix = si->si_cxix; cxix >= 0; --cxix) {
+ const PERL_CONTEXT *cx = si->si_cxstack + cxix;
-#if I_WORKAROUND_REQUIRE_PROPAGATION
- {
- const PERL_SI *si;
- I32 requires = 0;
+ if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE)
+ return PTR2IV(cx);
+ }
+ }
- for (si = PL_curstackinfo; si; si = si->si_prev) {
- I32 cxix;
+ return PTR2IV(NULL);
+}
+#endif /* I_WORKAROUND_REQUIRE_PROPAGATION */
- for (cxix = si->si_cxix; cxix >= 0; --cxix) {
- const PERL_CONTEXT *cx = si->si_cxstack + cxix;
+STATIC SV *indirect_tag(pTHX_ SV *value) {
+#define indirect_tag(V) indirect_tag(aTHX_ (V))
+ indirect_hint_t *h;
+ SV *code = NULL;
+ dMY_CXT;
- if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE)
- ++requires;
- }
+ if (SvROK(value)) {
+ value = SvRV(value);
+ if (SvTYPE(value) >= SVt_PVCV) {
+ code = value;
+ SvREFCNT_inc_simple_NN(code);
}
-
- h->requires = requires;
}
-#endif
+#if I_HINT_STRUCT
+ h = PerlMemShared_malloc(sizeof *h);
+ h->code = code;
+# if I_WORKAROUND_REQUIRE_PROPAGATION
+ h->cxreq = indirect_require_tag();
+# endif /* I_WORKAROUND_REQUIRE_PROPAGATION */
+#else /* I_HINT_STRUCT */
+ h = code;
+#endif /* !I_HINT_STRUCT */
+
+#if I_THREADSAFE
/* We only need for the key to be an unique tag for looking up the value later.
* Allocated memory provides convenient unique identifiers, so that's why we
- * use the value pointer as the key itself. */
- ptable_hints_store(MY_CXT.tbl, value, h);
+ * use the hint as the key itself. */
+ ptable_hints_store(MY_CXT.tbl, h, h);
+#endif /* I_THREADSAFE */
- return newSVuv(PTR2UV(value));
+ return newSViv(PTR2IV(h));
}
STATIC SV *indirect_detag(pTHX_ const SV *hint) {
indirect_hint_t *h;
dMY_CXT;
- if (!(hint && SvOK(hint) && SvIOK(hint)))
+ if (!(hint && SvIOK(hint)))
return NULL;
- h = ptable_fetch(MY_CXT.tbl, INT2PTR(void *, SvUVX(hint)));
+ 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
- {
- const PERL_SI *si;
- I32 requires = 0;
-
- for (si = PL_curstackinfo; si; si = si->si_prev) {
- I32 cxix;
-
- for (cxix = si->si_cxix; cxix >= 0; --cxix) {
- const PERL_CONTEXT *cx = si->si_cxstack + cxix;
-
- if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE
- && ++requires > h->requires)
- return NULL;
- }
- }
- }
-#endif
-
- return h->code;
-}
-
-#else
-
-STATIC SV *indirect_tag(pTHX_ SV *value) {
-#define indirect_tag(V) indirect_tag(aTHX_ (V))
- UV tag = 0;
-
- if (SvOK(value) && SvROK(value)) {
- value = SvRV(value);
- SvREFCNT_inc(value);
- tag = PTR2UV(value);
- }
+ if (indirect_require_tag() != h->cxreq)
+ return NULL;
+#endif /* I_WORKAROUND_REQUIRE_PROPAGATION */
- return newSVuv(tag);
+ return I_HINT_CODE(h);
}
-#define indirect_detag(H) (((H) && SvOK(H)) ? INT2PTR(SV *, SvUVX(H)) : NULL)
-
-#endif /* I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION */
-
STATIC U32 indirect_hash = 0;
STATIC SV *indirect_hint(pTHX) {
#define indirect_hint() indirect_hint(aTHX)
SV *hint;
+
+ if (IN_PERL_RUNTIME)
+ return NULL;
+
#if I_HAS_PERL(5, 9, 5)
hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
NULL,
0,
indirect_hash);
#else
- SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__,
+ {
+ SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__,
indirect_hash);
- if (!val)
- return 0;
- hint = *val;
+ if (!val)
+ return 0;
+ hint = *val;
+ }
#endif
return indirect_detag(hint);
}
/* ... op -> source position ............................................... */
-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))
+STATIC void indirect_map_store(pTHX_ const OP *o, const char *src, SV *sv, line_t line) {
+#define indirect_map_store(O, S, N, L) indirect_map_store(aTHX_ (O), (S), (N), (L))
indirect_op_info_t *oi;
const char *s;
STRLEN len;
oi->size = 0;
}
- s = SvPV_const(sv, len);
+ 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 = src;
+
+ oi->len = len;
+ oi->pos = src;
+ oi->line = line;
}
STATIC const indirect_op_info_t *indirect_map_fetch(pTHX_ const OP *o) {
if (indirect_hint()) {
SV *sv = cSVOPo_sv;
if (SvPOK(sv) && (SvTYPE(sv) >= SVt_PV)) {
- indirect_map_store(o, indirect_find(sv, PL_oldbufptr), sv);
+ const char *s = indirect_find(sv, PL_oldbufptr);
+ indirect_map_store(o, s, sv, CopLINE(&PL_compiling));
return o;
}
}
}
o = CALL_FPTR(indirect_old_ck_rv2sv)(aTHX_ o);
- indirect_map_store(o, s, sv);
+ indirect_map_store(o, s, sv, CopLINE(&PL_compiling));
return o;
}
while (s < t && isSPACE(*t)) --t;
sv = sv_2mortal(newSVpvn("$", 1));
sv_catpvn_nomg(sv, s, t - s + 1);
- indirect_map_store(o, s, sv);
+ indirect_map_store(o, s, sv, CopLINE(&PL_compiling));
return 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 = CALL_FPTR(old_ck)(aTHX_ o);
+
+ if (indirect_hint()) {
+ indirect_map_store(o, PL_oldbufptr, NULL, CopLINE(&PL_compiling));
+ return 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;
OP *op = cUNOPo->op_first;
const indirect_op_info_t *oi = indirect_map_fetch(op);
const char *s = NULL;
+ line_t line;
SV *sv;
if (oi && (s = oi->pos)) {
- sv = sv_2mortal(newSVpvn(oi->buf, oi->len));
+ sv = sv_2mortal(newSVpvn(oi->buf, oi->len));
+ line = oi->line; /* Keep the old line so that we really point to the first */
} else {
sv = cSVOPx_sv(op);
if (!SvPOK(sv) || (SvTYPE(sv) < SVt_PV))
goto done;
- sv = sv_mortalcopy(sv);
- s = indirect_find(sv, PL_oldbufptr);
+ sv = sv_mortalcopy(sv);
+ s = indirect_find(sv, PL_oldbufptr);
+ line = CopLINE(&PL_compiling);
}
o = CALL_FPTR(indirect_old_ck_method)(aTHX_ o);
/* o may now be a method_named */
- indirect_map_store(o, s, sv);
+ indirect_map_store(o, s, sv, line);
return o;
}
/* ... ck_entersub ......................................................... */
+STATIC int indirect_is_indirect(const indirect_op_info_t *moi, const indirect_op_info_t *ooi) {
+ if (moi->pos > ooi->pos)
+ return 0;
+
+ if (moi->pos == ooi->pos)
+ return moi->len == ooi->len && !memcmp(moi->buf, ooi->buf, moi->len);
+
+ return 1;
+}
+
STATIC OP *(*indirect_old_ck_entersub)(pTHX_ OP *) = 0;
STATIC OP *indirect_ck_entersub(pTHX_ OP *o) {
case OP_CONST:
case OP_RV2SV:
case OP_PADSV:
+ case OP_SCOPE:
+ case OP_LEAVE:
break;
default:
goto done;
if (!(ooi && ooi->pos))
goto done;
- if (moi->pos < ooi->pos) {
- SV *file;
- line_t line;
+ if (indirect_is_indirect(moi, ooi)) {
+ SV *file;
dSP;
ENTER;
#else
file = sv_mortalcopy(CopFILESV(&PL_compiling));
#endif
- line = CopLINE(&PL_compiling);
PUSHMARK(SP);
EXTEND(SP, 4);
mPUSHp(ooi->buf, ooi->len);
mPUSHp(moi->buf, moi->len);
PUSHs(file);
- mPUSHu(line);
+ mPUSHu(moi->line);
PUTBACK;
call_sv(code, G_VOID);
STATIC U32 indirect_initialized = 0;
+STATIC void indirect_teardown(pTHX_ void *root) {
+ dMY_CXT;
+
+ if (!indirect_initialized)
+ return;
+
+#if I_MULTIPLICITY
+ if (aTHX != root)
+ return;
+#endif
+
+ 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_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.linestr = 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_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
BOOT:
{
- if (!indirect_initialized++) {
+ if (!indirect_booted++) {
HV *stash;
- MY_CXT_INIT;
- MY_CXT.map = ptable_new();
- MY_CXT.linestr = NULL;
-#if I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION
- MY_CXT.tbl = ptable_new();
-#endif
-#if I_THREADSAFE
- MY_CXT.owner = aTHX;
-#endif
-
PERL_HASH(indirect_hash, __PACKAGE__, __PACKAGE_LEN__);
- 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);
-
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
{
level = PerlMemShared_malloc(sizeof *level);
*level = 1;
- LEAVE;
+ LEAVE_with_name("sub");
SAVEDESTRUCTOR_X(indirect_thread_cleanup, level);
- ENTER;
+ ENTER_with_name("sub");
}
#endif
projects / perl / modules / indirect.git / blobdiff