# define SvPV_nolen_const(S) SvPV_nolen(S)
#endif
+#ifndef SvREFCNT_inc_simple_void
+# define SvREFCNT_inc_simple_void(sv) SvREFCNT_inc(sv)
+#endif
+
#ifndef HvNAME_get
# define HvNAME_get(H) HvNAME(H)
#endif
#define SU_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
+/* --- Threads and multiplicity -------------------------------------------- */
+
+#ifndef NOOP
+# define NOOP
+#endif
+
+#ifndef dNOOP
+# define dNOOP
+#endif
+
+#ifndef SU_MULTIPLICITY
+# if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
+# define SU_MULTIPLICITY 1
+# else
+# define SU_MULTIPLICITY 0
+# endif
+#endif
+#if SU_MULTIPLICITY && !defined(tTHX)
+# define tTHX PerlInterpreter*
+#endif
+
+#if SU_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 SU_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 SU_THREADSAFE 0
+# undef dMY_CXT
+# define dMY_CXT dNOOP
+# undef MY_CXT
+# define MY_CXT su_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
+
+/* --- Global data --------------------------------------------------------- */
+
+#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
+
+typedef struct {
+ int stack_placeholder;
+ I32 cxix;
+ I32 items;
+ SV **savesp;
+ OP fakeop;
+} my_cxt_t;
+
+START_MY_CXT
+
/* --- Stack manipulations ------------------------------------------------- */
+#define SU_SAVE_DESTRUCTOR_SIZE 3
+#define SU_SAVE_INT_SIZE 3
+
#ifndef SvCANEXISTDELETE
# define SvCANEXISTDELETE(sv) \
(!SvRMAGICAL(sv) \
if (SvRMAGICAL(av)) {
const MAGIC * const tied_magic = mg_find((SV *) av, PERL_MAGIC_tied);
if (tied_magic) {
- int adjust_index = 1;
SV * const * const negative_indices_glob =
hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *) (av), tied_magic))),
NEGATIVE_INDICES_VAR, 16, 0);
Newx(ud, 1, su_ud_adelete);
ud->av = av;
ud->idx = idx;
- SvREFCNT_inc(av);
+ SvREFCNT_inc_simple_void(av);
SAVEDESTRUCTOR_X(su_adelete, ud);
}
if (val) { /* local $x{$keysv} = $val; */
SvSetMagicSV(*svp, val);
} else { /* local $x{$keysv}; delete $x{$keysv}; */
- hv_delete_ent(hv, keysv, G_DISCARD, HeHASH(he));
+ (void)hv_delete_ent(hv, keysv, G_DISCARD, HeHASH(he));
}
}
typedef struct {
I32 depth;
+ I32 pad;
I32 *origin;
void (*handler)(pTHX_ void *);
} su_ud_common;
#define SU_UD_DEPTH(U) (((su_ud_common *) (U))->depth)
+#define SU_UD_PAD(U) (((su_ud_common *) (U))->pad)
#define SU_UD_ORIGIN(U) (((su_ud_common *) (U))->origin)
#define SU_UD_HANDLER(U) (((su_ud_common *) (U))->handler)
STATIC void su_call(pTHX_ void *ud_) {
su_ud_reap *ud = (su_ud_reap *) ud_;
-#if SU_HAS_PERL(5, 10, 0)
- I32 dieing = PL_op->op_type == OP_DIE;
+#if SU_HAS_PERL(5, 9, 5)
+ PERL_CONTEXT saved_cx;
+ I32 cxix;
#endif
dSP;
- SU_D(PerlIO_printf(Perl_debug_log, "%p: @@@ call at %d (save is %d)\n",
- ud, PL_scopestack_ix, PL_savestack_ix));
+ SU_D({
+ PerlIO_printf(Perl_debug_log,
+ "%p: @@@ call\n%p: depth=%2d scope_ix=%2d save_ix=%2d\n",
+ ud, ud, SU_UD_DEPTH(ud), PL_scopestack_ix, PL_savestack_ix);
+ });
+
ENTER;
SAVETMPS;
PUSHMARK(SP);
PUTBACK;
- /* If cxstack_ix isn't incremented there, the eval context will be overwritten
- * when the new sub scope will be created in call_sv. */
+ /* If the recently popped context isn't saved there, it will be overwritten by
+ * the sub scope from call_sv, although it's still needed in our caller. */
-#if SU_HAS_PERL(5, 10, 0)
- if (dieing)
- if (cxstack_ix < cxstack_max)
- ++cxstack_ix;
- else
- cxstack_ix = Perl_cxinc(aTHX);
+#if SU_HAS_PERL(5, 9, 5)
+ if (cxstack_ix < cxstack_max)
+ cxix = cxstack_ix + 1;
+ else
+ cxix = Perl_cxinc(aTHX);
+ saved_cx = cxstack[cxix];
#endif
call_sv(ud->cb, G_VOID);
-#if SU_HAS_PERL(5, 10, 0)
- if (dieing && cxstack_ix > 0)
- --cxstack_ix;
+#if SU_HAS_PERL(5, 9, 5)
+ cxstack[cxix] = saved_cx;
#endif
- SPAGAIN;
PUTBACK;
FREETMPS;
STATIC void su_reap(pTHX_ void *ud) {
#define su_reap(U) su_reap(aTHX_ (U))
- SU_D(PerlIO_printf(Perl_debug_log, "%p: === reap at %d (save is %d)\n",
- ud, PL_scopestack_ix, PL_savestack_ix));
+ SU_D({
+ PerlIO_printf(Perl_debug_log,
+ "%p: === reap\n%p: depth=%2d scope_ix=%2d save_ix=%2d\n",
+ ud, ud, SU_UD_DEPTH(ud), PL_scopestack_ix, PL_savestack_ix);
+ });
+
SAVEDESTRUCTOR_X(su_call, ud);
- SU_D(PerlIO_printf(Perl_debug_log, "%p: savestack is now at %d, base at %d\n",
- ud, PL_savestack_ix,
- PL_scopestack[PL_scopestack_ix]));
}
/* ... Localize & localize array/hash element .............................. */
typedef struct {
su_ud_common ci;
- SV *sv;
- SV *val;
- SV *elem;
+ SV *sv;
+ SV *val;
+ SV *elem;
+ svtype type;
} su_ud_localize;
-STATIC void su_localize(pTHX_ void *ud_) {
-#define su_localize(U) su_localize(aTHX_ (U))
- su_ud_localize *ud = (su_ud_localize *) ud_;
- SV *sv = ud->sv;
- SV *val = ud->val;
- SV *elem = ud->elem;
- GV *gv;
+STATIC void su_ud_localize_init(pTHX_ su_ud_localize *ud, SV *sv, SV *val, SV *elem) {
+#define su_ud_localize_init(UD, S, V, E) su_ud_localize_init(aTHX_ (UD), (S), (V), (E))
UV deref = 0;
svtype t = SVt_NULL;
+ SvREFCNT_inc_simple_void(sv);
+
if (SvTYPE(sv) >= SVt_PVGV) {
- gv = (GV *) sv;
- if (!val) { /* local *x; */
+ if (!val || !SvROK(val)) { /* local *x; or local *x = $val; */
t = SVt_PVGV;
- } else if (!SvROK(val)) { /* local *x = $val; */
- goto assign;
- } else { /* local *x = \$val; */
+ } else { /* local *x = \$val; */
t = SvTYPE(SvRV(val));
deref = 1;
}
t = SvTYPE(val);
}
}
- gv = gv_fetchpvn_flags(s, l, GV_ADDMULTI, SVt_PVGV);
+ SvREFCNT_dec(sv);
+ sv = newSVpvn(s, l);
+ }
+
+ switch (t) {
+ case SVt_PVAV:
+ case SVt_PVHV:
+ case SVt_PVCV:
+ case SVt_PVGV:
+ deref = 0;
+ default:
+ break;
+ }
+ /* When deref is set, val isn't NULL */
+
+ ud->sv = sv;
+ ud->val = val ? newSVsv(deref ? SvRV(val) : val) : NULL;
+ ud->elem = SvREFCNT_inc(elem);
+ ud->type = t;
+}
+
+STATIC void su_localize(pTHX_ void *ud_) {
+#define su_localize(U) su_localize(aTHX_ (U))
+ su_ud_localize *ud = (su_ud_localize *) ud_;
+ SV *sv = ud->sv;
+ SV *val = ud->val;
+ SV *elem = ud->elem;
+ svtype t = ud->type;
+ GV *gv;
+
+ if (SvTYPE(sv) >= SVt_PVGV) {
+ gv = (GV *) sv;
+ } else {
+#ifdef gv_fetchsv
+ gv = gv_fetchsv(sv, GV_ADDMULTI, t);
+#else
+ STRLEN len;
+ const char *name = SvPV_const(sv, len);
+ gv = gv_fetchpvn_flags(name, len, GV_ADDMULTI, t);
+#endif
}
SU_D({
- SV *z = newSV_type(t);
- PerlIO_printf(Perl_debug_log, "%p: === localize a %s at %d (save is %d)\n",
- ud, sv_reftype(z, 0),
- PL_scopestack_ix, PL_savestack_ix);
+ SV *z = newSV(0);
+ SvUPGRADE(z, t);
+ PerlIO_printf(Perl_debug_log, "%p: === localize a %s\n",ud, sv_reftype(z, 0));
+ PerlIO_printf(Perl_debug_log,
+ "%p: depth=%2d scope_ix=%2d save_ix=%2d\n",
+ ud, SU_UD_DEPTH(ud), PL_scopestack_ix, PL_savestack_ix);
SvREFCNT_dec(z);
});
break;
default:
gv = (GV *) save_scalar(gv);
-maybe_deref:
- if (deref) /* val != NULL */
- val = SvRV(val);
break;
}
- SU_D(PerlIO_printf(Perl_debug_log, "%p: savestack is now at %d, base at %d\n",
- ud, PL_savestack_ix,
- PL_scopestack[PL_scopestack_ix]));
-
-assign:
if (val)
SvSetMagicSV((SV *) gv, val);
I32 depth, base, mark, *origin;
depth = SU_UD_DEPTH(ud);
- SU_D(PerlIO_printf(Perl_debug_log, "%p: --- pop %s at %d from %d to %d [%d]\n",
- ud, SU_CXNAME,
- PL_scopestack_ix, PL_savestack_ix,
- PL_scopestack[PL_scopestack_ix],
- depth));
+ SU_D(
+ PerlIO_printf(Perl_debug_log,
+ "%p: --- pop a %s\n"
+ "%p: leave scope at depth=%2d scope_ix=%2d cur_top=%2d cur_base=%2d\n",
+ ud, SU_CXNAME,
+ ud, depth, PL_scopestack_ix,PL_savestack_ix,PL_scopestack[PL_scopestack_ix])
+ );
origin = SU_UD_ORIGIN(ud);
mark = origin[depth];
base = origin[depth - 1];
- SU_D(PerlIO_printf(Perl_debug_log, "%p: clean from %d down to %d\n",
- ud, mark, base));
+ SU_D(PerlIO_printf(Perl_debug_log,
+ "%p: original scope was %*c top=%2d base=%2d\n",
+ ud, 24, ' ', mark, base));
if (base < mark) {
+ SU_D(PerlIO_printf(Perl_debug_log, "%p: clear leftovers\n", ud));
PL_savestack_ix = mark;
leave_scope(base);
}
PL_savestack_ix = base;
- if (--depth > 0) {
- SU_UD_DEPTH(ud) = depth;
- SU_D(PerlIO_printf(Perl_debug_log, "%p: save new destructor at %d [%d]\n",
- ud, PL_savestack_ix, depth));
+
+ SU_UD_DEPTH(ud) = --depth;
+
+ if (depth > 0) {
+ I32 i = 1, pad;
+
+ if (pad = SU_UD_PAD(ud)) {
+ dMY_CXT;
+ do {
+ save_int(&MY_CXT.stack_placeholder);
+ } while (--pad);
+ }
SAVEDESTRUCTOR_X(su_pop, ud);
- SU_D(PerlIO_printf(Perl_debug_log, "%p: pop end at at %d [%d]\n",
- ud, PL_savestack_ix, depth));
+
+ /* Skip depths corresponding to scopes for which leave_scope() might not be
+ * called. */
+ while (depth > 1 && PL_scopestack_ix >= i) {
+ I32 j = PL_scopestack[PL_scopestack_ix - i];
+
+ if (j < PL_savestack_ix)
+ break;
+
+ SU_D(PerlIO_printf(Perl_debug_log,
+ "%p: skip scope%*cat depth=%2d scope_ix=%2d new_top=%2d >= cur_base=%2d\n",
+ ud, 6, ' ', depth, PL_scopestack_ix - i, j, PL_savestack_ix));
+
+ SU_UD_DEPTH(ud) = --depth;
+
+ ++i;
+ }
+
+ SU_D(PerlIO_printf(Perl_debug_log,
+ "%p: push destructor at depth=%2d scope_ix=%2d save_ix=%2d\n",
+ ud, depth, PL_scopestack_ix, PL_savestack_ix));
} else {
SU_UD_HANDLER(ud)(aTHX_ ud);
}
+
+ SU_D(PerlIO_printf(Perl_debug_log,
+ "%p: --- end pop: cur_top=%2d == cur_base=%2d\n",
+ ud, PL_savestack_ix, PL_scopestack[PL_scopestack_ix]));
}
/* --- Initialize the stack and the action userdata ------------------------ */
-STATIC I32 su_init(pTHX_ I32 level, void *ud, I32 size) {
+STATIC I32 su_init(pTHX_ I32 cxix, void *ud, I32 size) {
#define su_init(L, U, S) su_init(aTHX_ (L), (U), (S))
- I32 i, depth = 0, *origin;
- I32 cur, last, step;
+ I32 i, depth = 1, pad, offset, *origin;
- LEAVE;
+ SU_D(PerlIO_printf(Perl_debug_log, "%p: ### init for cx %d\n", ud, cxix));
- if (level <= 0) {
- SU_UD_HANDLER(ud)(aTHX_ ud);
- goto done;
+ if (size <= SU_SAVE_DESTRUCTOR_SIZE)
+ pad = 0;
+ else {
+ I32 extra = size - SU_SAVE_DESTRUCTOR_SIZE;
+ pad = extra / SU_SAVE_INT_SIZE + ((extra % SU_SAVE_INT_SIZE) ? 1 : 0);
}
+ offset = SU_SAVE_DESTRUCTOR_SIZE + SU_SAVE_INT_SIZE * pad;
- SU_D(PerlIO_printf(Perl_debug_log, "%p: ### init for level %d\n", ud, level));
+ SU_D(PerlIO_printf(Perl_debug_log, "%p: size=%d pad=%d offset=%d\n",
+ ud, size, pad, offset));
- for (i = 0; i < level; ++i) {
- PERL_CONTEXT *cx = &cxstack[cxstack_ix - i];
+ for (i = cxstack_ix; i > cxix; --i) {
+ PERL_CONTEXT *cx = cxstack + i;
switch (CxTYPE(cx)) {
+#if SU_HAS_PERL(5, 10, 0)
+ case CXt_BLOCK:
+ SU_D(PerlIO_printf(Perl_debug_log, "%p: cx %d is block\n", ud, i));
+ /* Given and when blocks are actually followed by a simple block, so skip
+ * it if needed. */
+ if (cxix > 0) { /* Implies i > 0 */
+ PERL_CONTEXT *next = cx - 1;
+ if (CxTYPE(next) == CXt_GIVEN || CxTYPE(next) == CXt_WHEN)
+ --cxix;
+ }
+ depth++;
+ break;
+#endif
#if SU_HAS_PERL(5, 11, 0)
case CXt_LOOP_FOR:
case CXt_LOOP_PLAIN:
depth += 2;
break;
default:
- SU_D(PerlIO_printf(Perl_debug_log, "%p: cx %d is normal\n", ud, i));
+ SU_D(PerlIO_printf(Perl_debug_log, "%p: cx %d is other\n", ud, i));
depth++;
break;
}
}
- SU_D(PerlIO_printf(Perl_debug_log, "%p: depth is %d\n", ud, depth));
+ SU_D(PerlIO_printf(Perl_debug_log, "%p: going down to depth %d\n", ud, depth));
Newx(origin, depth + 1, I32);
origin[0] = PL_scopestack[PL_scopestack_ix - depth];
for (i = depth - 1; i >= 1; --i) {
I32 j = PL_scopestack_ix - i;
origin[depth - i] = PL_scopestack[j];
- PL_scopestack[j] += 3;
+ PL_scopestack[j] += offset;
}
origin[depth] = PL_savestack_ix;
- SU_D({
- PerlIO_printf(Perl_debug_log, "%p: d=%d s=%d x=%d c=%d o=%d\n", ud,
- depth, 0, PL_scopestack_ix - 1, PL_savestack_ix, origin[depth]);
- for (i = depth - 1; i >= 0; --i) {
- I32 x = PL_scopestack_ix - depth + i;
- PerlIO_printf(Perl_debug_log, "%p: d=%d s=%d x=%d c=%d o=%d\n", ud,
- i, depth - i, x, PL_scopestack[x], origin[i]);
- }
- });
-
SU_UD_ORIGIN(ud) = origin;
SU_UD_DEPTH(ud) = depth;
-
- SU_D(PerlIO_printf(Perl_debug_log, "%p: set original destructor at %d [%d]\n",
- ud, PL_savestack_ix, depth));
-
+ SU_UD_PAD(ud) = pad;
+
+ /* Make sure the first destructor fires by pushing enough fake slots on the
+ * stack. */
+ if (PL_savestack_ix + SU_SAVE_DESTRUCTOR_SIZE
+ <= PL_scopestack[PL_scopestack_ix - 1]) {
+ dMY_CXT;
+ do {
+ SU_D(PerlIO_printf(Perl_debug_log,
+ "%p: push a fake slot at scope_ix=%2d save_ix=%2d\n",
+ ud, PL_scopestack_ix, PL_savestack_ix));
+ save_int(&MY_CXT.stack_placeholder);
+ } while (PL_savestack_ix + SU_SAVE_DESTRUCTOR_SIZE
+ <= PL_scopestack[PL_scopestack_ix - 1]);
+ }
+ SU_D(PerlIO_printf(Perl_debug_log,
+ "%p: push first destructor at scope_ix=%2d save_ix=%2d\n",
+ ud, PL_scopestack_ix, PL_savestack_ix));
SAVEDESTRUCTOR_X(su_pop, ud);
-done:
- ENTER;
+ SU_D({
+ for (i = 0; i <= depth; ++i) {
+ I32 j = PL_scopestack_ix - i;
+ PerlIO_printf(Perl_debug_log,
+ "%p: depth=%2d scope_ix=%2d saved_floor=%2d new_floor=%2d\n",
+ ud, i, j, origin[depth - i],
+ i == 0 ? PL_savestack_ix : PL_scopestack[j]);
+ }
+ });
return depth;
}
/* --- Unwind stack -------------------------------------------------------- */
-typedef struct {
- I32 cxix;
- I32 items;
-} su_ud_unwind;
-
STATIC void su_unwind(pTHX_ void *ud_) {
- su_ud_unwind *ud = (su_ud_unwind *) ud_;
- OP fakeop;
- I32 cxix = ud->cxix;
- I32 items = ud->items - 1;
- I32 gimme, mark = 0;
+ dMY_CXT;
+ I32 cxix = MY_CXT.cxix;
+ I32 items = MY_CXT.items - 1;
+ SV **savesp = MY_CXT.savesp;
+ I32 mark;
+
+ PERL_UNUSED_VAR(ud_);
+
+ if (savesp)
+ PL_stack_sp = savesp;
if (cxstack_ix > cxix)
dounwind(cxix);
/* Hide the level */
- PL_stack_sp--;
+ if (items >= 0)
+ PL_stack_sp--;
- gimme = GIMME_V;
- if (cxix > 0)
- mark = cxstack[cxix - 1].blk_oldsp;
+ mark = PL_markstack[cxstack[cxix].blk_oldmarksp];
+ *PL_markstack_ptr = PL_stack_sp - PL_stack_base - items;
- if (gimme == G_SCALAR) {
- *PL_markstack_ptr = PL_stack_sp - PL_stack_base;
- PL_stack_sp += items;
- } else {
- *PL_markstack_ptr = PL_stack_sp - PL_stack_base - items;
- }
+ SU_D({
+ I32 gimme = GIMME_V;
+ PerlIO_printf(Perl_debug_log,
+ "%p: cx=%d gimme=%s items=%d sp=%d oldmark=%d mark=%d\n",
+ &MY_CXT, cxix,
+ gimme == G_VOID ? "void" : gimme == G_ARRAY ? "list" : "scalar",
+ items, PL_stack_sp - PL_stack_base, *PL_markstack_ptr, mark);
+ });
PL_op = PL_ppaddr[OP_RETURN](aTHX);
*PL_markstack_ptr = mark;
- fakeop.op_next = PL_op;
- PL_op = &fakeop;
-
- Safefree(ud);
+ MY_CXT.fakeop.op_next = PL_op;
+ PL_op = &(MY_CXT.fakeop);
}
/* --- XS ------------------------------------------------------------------ */
-#define SU_GET_LEVEL(A) \
- if (items > A) { \
- SV *lsv = ST(A); \
- if (SvOK(lsv)) \
- level = SvUV(lsv); \
- if (level < 0) \
- XSRETURN(0); \
- } \
- if (level > cxstack_ix) \
- level = cxstack_ix;
-
-#define SU_DOPOPTOCX(t) \
- STMT_START { \
- I32 i, cxix = cxstack_ix, from = 0; \
- if (items) \
- from = SvIV(ST(0)); \
- for (i = cxix - from; i >= 0; --i) { \
- if (CxTYPE(&cxstack[i]) == t) { \
- ST(0) = sv_2mortal(newSViv(cxix - i)); \
- XSRETURN(1); \
- } \
- } \
- XSRETURN_UNDEF; \
+#if SU_HAS_PERL(5, 8, 9)
+# define SU_SKIP_DB_MAX 2
+#else
+# define SU_SKIP_DB_MAX 3
+#endif
+
+/* Skip context sequences of 1 to SU_SKIP_DB_MAX (included) block contexts
+ * followed by a DB sub */
+
+#define SU_SKIP_DB(C) \
+ STMT_START { \
+ I32 skipped = 0; \
+ PERL_CONTEXT *base = cxstack; \
+ PERL_CONTEXT *cx = base + (C); \
+ while (cx >= base && (C) > skipped && CxTYPE(cx) == CXt_BLOCK) \
+ --cx, ++skipped; \
+ if (cx >= base && (C) > skipped) { \
+ switch (CxTYPE(cx)) { \
+ case CXt_SUB: \
+ if (skipped <= SU_SKIP_DB_MAX && cx->blk_sub.cv == GvCV(PL_DBsub)) \
+ (C) -= skipped + 1; \
+ break; \
+ default: \
+ break; \
+ } \
+ } \
+ } STMT_END
+
+#define SU_GET_CONTEXT(A, B) \
+ STMT_START { \
+ if (items > A) { \
+ SV *csv = ST(B); \
+ if (!SvOK(csv)) \
+ goto default_cx; \
+ cxix = SvIV(csv); \
+ if (cxix < 0) \
+ cxix = 0; \
+ else if (cxix > cxstack_ix) \
+ cxix = cxstack_ix; \
+ } else { \
+default_cx: \
+ cxix = cxstack_ix; \
+ if (PL_DBsub) \
+ SU_SKIP_DB(cxix); \
+ } \
+ } STMT_END
+
+#define SU_GET_LEVEL(A, B) \
+ STMT_START { \
+ level = 0; \
+ if (items > 0) { \
+ SV *lsv = ST(B); \
+ if (SvOK(lsv)) { \
+ level = SvIV(lsv); \
+ if (level < 0) \
+ level = 0; \
+ } \
+ } \
} STMT_END
XS(XS_Scope__Upper_unwind); /* prototype to pass -Wmissing-prototypes */
#else
dXSARGS;
#endif
+ dMY_CXT;
I32 cxix;
- su_ud_unwind *ud;
- SV *level;
- if (!items)
- Perl_croak(aTHX_ "Usage: Scope::Upper::unwind(..., level)");
+
PERL_UNUSED_VAR(cv); /* -W */
PERL_UNUSED_VAR(ax); /* -Wall */
- level = ST(items - 1);
- cxix = SvOK(level) ? SvIV(level) : 0;
- if (cxix < 0)
- cxix = 0;
- else if (cxix > cxstack_ix)
- cxix = cxstack_ix;
- cxix = cxstack_ix - cxix;
+
+ SU_GET_CONTEXT(0, items - 1);
do {
PERL_CONTEXT *cx = cxstack + cxix;
switch (CxTYPE(cx)) {
case CXt_SUB:
+ if (PL_DBsub && cx->blk_sub.cv == GvCV(PL_DBsub))
+ continue;
case CXt_EVAL:
case CXt_FORMAT:
- /* pp_entersub will try to sanitize the stack - screw that, we're insane */
- if (GIMME_V == G_SCALAR)
- PL_stack_sp = PL_stack_base + TOPMARK + 1;
- Newx(ud, 1, su_ud_unwind);
- ud->cxix = cxix;
- ud->items = items;
- SAVEDESTRUCTOR_X(su_unwind, ud);
+ MY_CXT.cxix = cxix;
+ MY_CXT.items = items;
+ /* pp_entersub will want to sanitize the stack after returning from there
+ * Screw that, we're insane */
+ if (GIMME_V == G_SCALAR) {
+ MY_CXT.savesp = PL_stack_sp;
+ /* dXSARGS calls POPMARK, so we need to match PL_markstack_ptr[1] */
+ PL_stack_sp = PL_stack_base + PL_markstack_ptr[1] + 1;
+ } else {
+ MY_CXT.savesp = NULL;
+ }
+ SAVEDESTRUCTOR_X(su_unwind, NULL);
return;
default:
break;
BOOT:
{
- HV *stash = gv_stashpv(__PACKAGE__, 1);
- newCONSTSUB(stash, "HERE", newSViv(0));
+ HV *stash;
+
+ MY_CXT_INIT;
+ MY_CXT.stack_placeholder = 0;
+
+ stash = gv_stashpv(__PACKAGE__, 1);
+ newCONSTSUB(stash, "TOP", newSViv(0));
+ newCONSTSUB(stash, "SU_THREADSAFE", newSVuv(SU_THREADSAFE));
+
newXSproto("Scope::Upper::unwind", XS_Scope__Upper_unwind, file, NULL);
}
-SV *
-TOP()
-PROTOTYPE:
+#if SU_THREADSAFE
+
+void
+CLONE(...)
+PROTOTYPE: DISABLE
CODE:
- RETVAL = newSViv(cxstack_ix);
-OUTPUT:
- RETVAL
+ PERL_UNUSED_VAR(items);
+ {
+ MY_CXT_CLONE;
+ }
+
+#endif /* SU_THREADSAFE */
SV *
-UP(...)
-PROTOTYPE: ;$
+HERE()
+PROTOTYPE:
PREINIT:
- I32 i = 0;
I32 cxix = cxstack_ix;
CODE:
- if (items)
- i = SvIV(ST(0));
- if (++i > cxix)
- i = cxix;
- RETVAL = newSViv(i);
+ if (PL_DBsub)
+ SU_SKIP_DB(cxix);
+ RETVAL = newSViv(cxix);
OUTPUT:
RETVAL
SV *
-DOWN(...)
+UP(...)
PROTOTYPE: ;$
PREINIT:
- I32 i = 0;
+ I32 cxix;
CODE:
- if (items)
- i = SvIV(ST(0));
- if (--i < 0)
- i = 0;
- RETVAL = newSViv(i);
+ SU_GET_CONTEXT(0, 0);
+ if (--cxix < 0)
+ cxix = 0;
+ if (PL_DBsub)
+ SU_SKIP_DB(cxix);
+ RETVAL = newSViv(cxix);
OUTPUT:
RETVAL
void
SUB(...)
PROTOTYPE: ;$
+PREINIT:
+ I32 cxix;
PPCODE:
- SU_DOPOPTOCX(CXt_SUB);
+ SU_GET_CONTEXT(0, 0);
+ for (; cxix >= 0; --cxix) {
+ PERL_CONTEXT *cx = cxstack + cxix;
+ switch (CxTYPE(cx)) {
+ default:
+ continue;
+ case CXt_SUB:
+ if (PL_DBsub && cx->blk_sub.cv == GvCV(PL_DBsub))
+ continue;
+ ST(0) = sv_2mortal(newSViv(cxix));
+ XSRETURN(1);
+ }
+ }
+ XSRETURN_UNDEF;
void
EVAL(...)
PROTOTYPE: ;$
+PREINIT:
+ I32 cxix;
PPCODE:
- SU_DOPOPTOCX(CXt_EVAL);
+ SU_GET_CONTEXT(0, 0);
+ for (; cxix >= 0; --cxix) {
+ PERL_CONTEXT *cx = cxstack + cxix;
+ switch (CxTYPE(cx)) {
+ default:
+ continue;
+ case CXt_EVAL:
+ ST(0) = sv_2mortal(newSViv(cxix));
+ XSRETURN(1);
+ }
+ }
+ XSRETURN_UNDEF;
+
+void
+SCOPE(...)
+PROTOTYPE: ;$
+PREINIT:
+ I32 cxix, level;
+PPCODE:
+ SU_GET_LEVEL(0, 0);
+ cxix = cxstack_ix;
+ if (PL_DBsub) {
+ SU_SKIP_DB(cxix);
+ while (cxix > 0) {
+ if (--level < 0)
+ break;
+ --cxix;
+ SU_SKIP_DB(cxix);
+ }
+ } else {
+ cxix -= level;
+ if (cxix < 0)
+ cxix = 0;
+ }
+ ST(0) = sv_2mortal(newSViv(cxix));
+ XSRETURN(1);
+
+void
+CALLER(...)
+PROTOTYPE: ;$
+PREINIT:
+ I32 cxix, level;
+PPCODE:
+ SU_GET_LEVEL(0, 0);
+ for (cxix = cxstack_ix; cxix > 0; --cxix) {
+ PERL_CONTEXT *cx = cxstack + cxix;
+ switch (CxTYPE(cx)) {
+ case CXt_SUB:
+ if (PL_DBsub && cx->blk_sub.cv == GvCV(PL_DBsub))
+ continue;
+ case CXt_EVAL:
+ case CXt_FORMAT:
+ if (--level < 0)
+ goto done;
+ break;
+ }
+ }
+done:
+ ST(0) = sv_2mortal(newSViv(cxix));
+ XSRETURN(1);
+
+void
+want_at(...)
+PROTOTYPE: ;$
+PREINIT:
+ I32 cxix;
+PPCODE:
+ SU_GET_CONTEXT(0, 0);
+ while (cxix > 0) {
+ PERL_CONTEXT *cx = cxstack + cxix--;
+ switch (CxTYPE(cx)) {
+ case CXt_SUB:
+ case CXt_EVAL:
+ case CXt_FORMAT: {
+ I32 gimme = cx->blk_gimme;
+ switch (gimme) {
+ case G_VOID: XSRETURN_UNDEF; break;
+ case G_SCALAR: XSRETURN_NO; break;
+ case G_ARRAY: XSRETURN_YES; break;
+ }
+ break;
+ }
+ }
+ }
+ XSRETURN_UNDEF;
void
reap(SV *hook, ...)
PROTOTYPE: &;$
PREINIT:
- I32 level = 0;
+ I32 cxix;
su_ud_reap *ud;
CODE:
- SU_GET_LEVEL(1);
+ SU_GET_CONTEXT(1, 1);
Newx(ud, 1, su_ud_reap);
SU_UD_ORIGIN(ud) = NULL;
SU_UD_HANDLER(ud) = su_reap;
ud->cb = newSVsv(hook);
- su_init(level, ud, 3);
+ su_init(cxix, ud, 3);
void
localize(SV *sv, SV *val, ...)
PROTOTYPE: $$;$
PREINIT:
- I32 level = 0;
+ I32 cxix;
+ I32 size = 3;
su_ud_localize *ud;
CODE:
- SU_GET_LEVEL(2);
+ SU_GET_CONTEXT(2, 2);
Newx(ud, 1, su_ud_localize);
SU_UD_ORIGIN(ud) = NULL;
SU_UD_HANDLER(ud) = su_localize;
- SvREFCNT_inc(sv);
- ud->sv = sv;
- ud->val = newSVsv(val);
- ud->elem = NULL;
- su_init(level, ud, 3);
+ su_ud_localize_init(ud, sv, val, NULL);
+#if !SU_HAS_PERL(5, 8, 9)
+ if (ud->type >= SVt_PVGV)
+ size = 6;
+#endif
+ su_init(cxix, ud, size);
void
localize_elem(SV *sv, SV *elem, SV *val, ...)
PROTOTYPE: $$$;$
PREINIT:
- I32 level = 0;
+ I32 cxix;
su_ud_localize *ud;
CODE:
- SU_GET_LEVEL(3);
+ if (SvTYPE(sv) >= SVt_PVGV)
+ croak("Can't infer the element localization type from a glob and the value");
+ SU_GET_CONTEXT(3, 3);
Newx(ud, 1, su_ud_localize);
SU_UD_ORIGIN(ud) = NULL;
SU_UD_HANDLER(ud) = su_localize;
- SvREFCNT_inc(sv);
- ud->sv = sv;
- ud->val = newSVsv(val);
- SvREFCNT_inc(elem);
- ud->elem = elem;
- su_init(level, ud, 4);
+ su_ud_localize_init(ud, sv, val, elem);
+ if (ud->type != SVt_PVAV && ud->type != SVt_PVHV) {
+ Safefree(ud);
+ croak("Can't localize an element of something that isn't an array or a hash");
+ }
+ su_init(cxix, ud, 4);
void
localize_delete(SV *sv, SV *elem, ...)
PROTOTYPE: $$;$
PREINIT:
- I32 level = 0;
+ I32 cxix;
+ I32 size = 4;
su_ud_localize *ud;
CODE:
- SU_GET_LEVEL(2);
+ SU_GET_CONTEXT(2, 2);
Newx(ud, 1, su_ud_localize);
SU_UD_ORIGIN(ud) = NULL;
SU_UD_HANDLER(ud) = su_localize;
- SvREFCNT_inc(sv);
- ud->sv = sv;
- ud->val = NULL;
- SvREFCNT_inc(elem);
- ud->elem = elem;
- su_init(level, ud, 4);
+ su_ud_localize_init(ud, sv, NULL, elem);
+#if !SU_HAS_PERL(5, 8, 9)
+ if (ud->type >= SVt_PVGV)
+ size = 6;
+#endif
+ su_init(cxix, ud, size);
projects / perl / modules / Scope-Upper.git / blobdiff