/* cop.h
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2004, 2005, 2006 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
#define JMPENV_PUSH(v) \
STMT_START { \
DEBUG_l(Perl_deb(aTHX_ "Setting up jumplevel %p, was %p\n", \
- &cur_env, PL_top_env)); \
+ (void*)&cur_env, (void*)PL_top_env)); \
cur_env.je_prev = PL_top_env; \
OP_REG_TO_MEM; \
cur_env.je_ret = PerlProc_setjmp(cur_env.je_buf, SCOPE_SAVES_SIGNAL_MASK); \
#define JMPENV_POP \
STMT_START { \
DEBUG_l(Perl_deb(aTHX_ "popping jumplevel was %p, now %p\n", \
- PL_top_env, cur_env.je_prev)); \
+ (void*)PL_top_env, (void*)cur_env.je_prev)); \
PL_top_env = cur_env.je_prev; \
} STMT_END
struct cop {
BASEOP
+ /* On LP64 putting this here takes advantage of the fact that BASEOP isn't
+ an exact multiple of 8 bytes to save structure padding. */
+ line_t cop_line; /* line # of this command */
char * cop_label; /* label for this construct */
#ifdef USE_ITHREADS
char * cop_stashpv; /* package line was compiled in */
HV * cop_stash; /* package line was compiled in */
GV * cop_filegv; /* file the following line # is from */
#endif
+ U32 cop_hints; /* hints bits from pragmata */
U32 cop_seq; /* parse sequence number */
- I32 cop_arybase; /* array base this line was compiled with */
- line_t cop_line; /* line # of this command */
- SV * cop_warnings; /* lexical warnings bitmask */
- SV * cop_io; /* lexical IO defaults */
+ /* Beware. mg.c and warnings.pl assume the type of this is STRLEN *: */
+ STRLEN * cop_warnings; /* lexical warnings bitmask */
+ /* compile time state of %^H. See the comment in op.c for how this is
+ used to recreate a hash to return from caller. */
+ struct refcounted_he * cop_hints_hash;
};
-#define Nullcop Null(COP*)
-
#ifdef USE_ITHREADS
# define CopFILE(c) ((c)->cop_file)
# define CopFILEGV(c) (CopFILE(c) \
- ? gv_fetchfile(CopFILE(c)) : Nullgv)
+ ? gv_fetchfile(CopFILE(c)) : NULL)
# ifdef NETWARE
# define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv))
+# define CopFILE_setn(c,pv,l) ((c)->cop_file = savepv((pv),(l)))
# else
# define CopFILE_set(c,pv) ((c)->cop_file = savesharedpv(pv))
+# define CopFILE_setn(c,pv,l) ((c)->cop_file = savesharedpvn((pv),(l)))
# endif
# define CopFILESV(c) (CopFILE(c) \
- ? GvSV(gv_fetchfile(CopFILE(c))) : Nullsv)
+ ? GvSV(gv_fetchfile(CopFILE(c))) : NULL)
# define CopFILEAV(c) (CopFILE(c) \
? GvAV(gv_fetchfile(CopFILE(c))) : NULL)
-# define CopFILEAVx(c) (assert(CopFILE(c)), \
+# ifdef DEBUGGING
+# define CopFILEAVx(c) (assert(CopFILE(c)), \
GvAV(gv_fetchfile(CopFILE(c))))
+# else
+# define CopFILEAVx(c) (GvAV(gv_fetchfile(CopFILE(c))))
+# endif
# define CopSTASHPV(c) ((c)->cop_stashpv)
# ifdef NETWARE
-# define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = ((pv) ? savepv(pv) : Nullch))
+# define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = ((pv) ? savepv(pv) : NULL))
# else
# define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savesharedpv(pv))
# endif
# define CopSTASH(c) (CopSTASHPV(c) \
? gv_stashpv(CopSTASHPV(c),GV_ADD) : NULL)
-# define CopSTASH_set(c,hv) CopSTASHPV_set(c, (hv) ? HvNAME_get(hv) : Nullch)
+# define CopSTASH_set(c,hv) CopSTASHPV_set(c, (hv) ? HvNAME_get(hv) : NULL)
# define CopSTASH_eq(c,hv) ((hv) && stashpv_hvname_match(c,hv))
+# define CopLABEL(c) ((c)->cop_label)
+# define CopLABEL_set(c,pv) (CopLABEL(c) = (pv))
# ifdef NETWARE
# define CopSTASH_free(c) SAVECOPSTASH_FREE(c)
# define CopFILE_free(c) SAVECOPFILE_FREE(c)
+# define CopLABEL_free(c) SAVECOPLABEL_FREE(c)
+# define CopLABEL_alloc(pv) ((pv)?savepv(pv):NULL)
# else
# define CopSTASH_free(c) PerlMemShared_free(CopSTASHPV(c))
-# define CopFILE_free(c) (PerlMemShared_free(CopFILE(c)),(CopFILE(c) = Nullch))
+# define CopFILE_free(c) (PerlMemShared_free(CopFILE(c)),(CopFILE(c) = NULL))
+# define CopLABEL_free(c) (PerlMemShared_free(CopLABEL(c)),(CopLABEL(c) = NULL))
+# define CopLABEL_alloc(pv) ((pv)?savesharedpv(pv):NULL)
# endif
#else
# define CopFILEGV(c) ((c)->cop_filegv)
# define CopFILEGV_set(c,gv) ((c)->cop_filegv = (GV*)SvREFCNT_inc(gv))
# define CopFILE_set(c,pv) CopFILEGV_set((c), gv_fetchfile(pv))
-# define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : Nullsv)
+# define CopFILE_setn(c,pv,l) CopFILEGV_set((c), gv_fetchfile_flags((pv),(l),0))
+# define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : NULL)
# define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : NULL)
-# define CopFILEAVx(c) (assert(CopFILEGV(c)), GvAV(CopFILEGV(c)))
-# define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : Nullch)
+# ifdef DEBUGGING
+# define CopFILEAVx(c) (assert(CopFILEGV(c)), GvAV(CopFILEGV(c)))
+# else
+# define CopFILEAVx(c) (GvAV(CopFILEGV(c)))
+# endif
+# define CopFILE(c) (CopFILEGV(c) && GvSV(CopFILEGV(c)) \
+ ? SvPVX(GvSV(CopFILEGV(c))) : NULL)
# define CopSTASH(c) ((c)->cop_stash)
+# define CopLABEL(c) ((c)->cop_label)
# define CopSTASH_set(c,hv) ((c)->cop_stash = (hv))
-# define CopSTASHPV(c) (CopSTASH(c) ? HvNAME_get(CopSTASH(c)) : Nullch)
+# define CopSTASHPV(c) (CopSTASH(c) ? HvNAME_get(CopSTASH(c)) : NULL)
/* cop_stash is not refcounted */
# define CopSTASHPV_set(c,pv) CopSTASH_set((c), gv_stashpv(pv,GV_ADD))
# define CopSTASH_eq(c,hv) (CopSTASH(c) == (hv))
+# define CopLABEL_alloc(pv) ((pv)?savepv(pv):NULL)
+# define CopLABEL_set(c,pv) (CopLABEL(c) = (pv))
# define CopSTASH_free(c)
-# define CopFILE_free(c) (SvREFCNT_dec(CopFILEGV(c)),(CopFILEGV(c) = Nullgv))
+# define CopFILE_free(c) (SvREFCNT_dec(CopFILEGV(c)),(CopFILEGV(c) = NULL))
+# define CopLABEL_free(c) (Safefree(CopLABEL(c)),(CopLABEL(c) = NULL))
#endif /* USE_ITHREADS */
# define OutCopFILE(c) CopFILE(c)
#endif
+/* If $[ is non-zero, it's stored in cop_hints under the key "$[", and
+ HINT_ARYBASE is set to indicate this.
+ Setting it is ineficient due to the need to create 2 mortal SVs, but as
+ using $[ is highly discouraged, no sane Perl code will be using it. */
+#define CopARYBASE_get(c) \
+ ((CopHINTS_get(c) & HINT_ARYBASE) \
+ ? SvIV(Perl_refcounted_he_fetch(aTHX_ (c)->cop_hints_hash, 0, \
+ "$[", 2, 0, 0)) \
+ : 0)
+#define CopARYBASE_set(c, b) STMT_START { \
+ if (b || ((c)->cop_hints & HINT_ARYBASE)) { \
+ (c)->cop_hints |= HINT_ARYBASE; \
+ if ((c) == &PL_compiling) \
+ PL_hints |= HINT_LOCALIZE_HH | HINT_ARYBASE; \
+ (c)->cop_hints_hash \
+ = Perl_refcounted_he_new(aTHX_ (c)->cop_hints_hash, \
+ sv_2mortal(newSVpvs("$[")), \
+ sv_2mortal(newSViv(b))); \
+ } \
+ } STMT_END
+
+/* FIXME NATIVE_HINTS if this is changed from op_private (see perl.h) */
+#define CopHINTS_get(c) ((c)->cop_hints + 0)
+#define CopHINTS_set(c, h) STMT_START { \
+ (c)->cop_hints = (h); \
+ } STMT_END
+
/*
* Here we have some enormously heavy (or at least ponderous) wizardry.
*/
GV * dfoutgv;
AV * savearray;
AV * argarray;
- long olddepth;
+ I32 olddepth;
U8 hasargs;
U8 lval; /* XXX merge lval and hasargs? */
PAD *oldcomppad;
cx->blk_sub.cv = cv; \
cx->blk_sub.olddepth = CvDEPTH(cv); \
cx->blk_sub.hasargs = hasargs; \
- cx->blk_sub.retop = Nullop; \
+ cx->blk_sub.retop = NULL; \
if (!CvDEPTH(cv)) { \
- (void)SvREFCNT_inc(cv); \
- (void)SvREFCNT_inc(cv); \
+ SvREFCNT_inc_simple_void_NN(cv); \
+ SvREFCNT_inc_simple_void_NN(cv); \
SAVEFREESV(cv); \
}
#define PUSHFORMAT(cx) \
cx->blk_sub.cv = cv; \
cx->blk_sub.gv = gv; \
- cx->blk_sub.retop = Nullop; \
+ cx->blk_sub.retop = NULL; \
cx->blk_sub.hasargs = 0; \
cx->blk_sub.dfoutgv = PL_defoutgv; \
- (void)SvREFCNT_inc(cx->blk_sub.dfoutgv)
+ SvREFCNT_inc_void(cx->blk_sub.dfoutgv)
#define POP_SAVEARRAY() \
STMT_START { \
#define CLEAR_ARGARRAY(ary) \
STMT_START { \
AvMAX(ary) += AvARRAY(ary) - AvALLOC(ary); \
- SvPV_set(ary, (char*)AvALLOC(ary)); \
+ AvARRAY(ary) = AvALLOC(ary); \
AvFILLp(ary) = -1; \
} STMT_END
POP_SAVEARRAY(); \
/* abandon @_ if it got reified */ \
if (AvREAL(cx->blk_sub.argarray)) { \
- SSize_t fill = AvFILLp(cx->blk_sub.argarray); \
+ const SSize_t fill = AvFILLp(cx->blk_sub.argarray); \
SvREFCNT_dec(cx->blk_sub.argarray); \
cx->blk_sub.argarray = newAV(); \
av_extend(cx->blk_sub.argarray, fill); \
} \
sv = (SV*)cx->blk_sub.cv; \
if (sv && (CvDEPTH((CV*)sv) = cx->blk_sub.olddepth)) \
- sv = Nullsv; \
+ sv = NULL; \
} STMT_END
#define LEAVESUB(sv) \
/* eval context */
struct block_eval {
- I32 old_in_eval;
- I32 old_op_type;
+ U8 old_in_eval;
+ U16 old_op_type;
SV * old_namesv;
OP * old_eval_root;
SV * cur_text;
STMT_START { \
cx->blk_eval.old_in_eval = PL_in_eval; \
cx->blk_eval.old_op_type = PL_op->op_type; \
- cx->blk_eval.old_namesv = (n ? newSVpv(n,0) : Nullsv); \
+ cx->blk_eval.old_namesv = (n ? newSVpv(n,0) : NULL); \
cx->blk_eval.old_eval_root = PL_eval_root; \
- cx->blk_eval.cur_text = PL_linestr; \
- cx->blk_eval.cv = Nullcv; /* set by doeval(), as applicable */ \
- cx->blk_eval.retop = Nullop; \
+ cx->blk_eval.cur_text = PL_parser ? PL_parser->linestr : NULL; \
+ cx->blk_eval.cv = NULL; /* set by doeval(), as applicable */ \
+ cx->blk_eval.retop = NULL; \
cx->blk_eval.cur_top_env = PL_top_env; \
} STMT_END
struct block_loop {
char * label;
I32 resetsp;
- OP * redo_op;
- OP * next_op;
- OP * last_op;
+ LOOP * my_op; /* My op, that contains redo, next and last ops. */
+ /* (except for non_ithreads we need to modify next_op in pp_ctl.c, hence
+ why next_op is conditionally defined below.) */
#ifdef USE_ITHREADS
void * iterdata;
PAD *oldcomppad;
#else
+ OP * next_op;
SV ** itervar;
#endif
SV * itersave;
+ /* (from inspection of source code) for a .. range of strings this is the
+ current string. */
SV * iterlval;
+ /* (from inspection of source code) for a foreach loop this is the array
+ being iterated over. For a .. range of numbers it's the current value.
+ A check is often made on the SvTYPE of iterary to determine whether
+ we are iterating over an array or a range. (numbers or strings) */
AV * iterary;
IV iterix;
+ /* (from inspection of source code) for a .. range of numbers this is the
+ maximum value. */
IV itermax;
};
+/* It might be possible to squeeze this structure further. As best I can tell
+ itermax and iterlval are never used at the same time, so it might be possible
+ to make them into a union. However, I'm not confident that there are enough
+ flag bits/NULLable pointers in this structure alone to encode which is
+ active. There is, however, U8 of space free in struct block, which could be
+ used. Right now it may not be worth squeezing this structure further, as it's
+ the largest part of struct block, and currently struct block is 64 bytes on
+ an ILP32 system, which will give good cache alignment.
+*/
#ifdef USE_ITHREADS
# define CxITERVAR(c) \
if ((cx->blk_loop.iterdata = (idata))) \
cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \
else \
- cx->blk_loop.itersave = Nullsv;
+ cx->blk_loop.itersave = NULL;
#else
# define CxITERVAR(c) ((c)->blk_loop.itervar)
# define CX_ITERDATA_SET(cx,ivar) \
if ((cx->blk_loop.itervar = (SV**)(ivar))) \
cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \
else \
- cx->blk_loop.itersave = Nullsv;
+ cx->blk_loop.itersave = NULL;
+#endif
+
+#ifdef USE_ITHREADS
+# define PUSHLOOP_OP_NEXT /* No need to do anything. */
+# define CX_LOOP_NEXTOP_GET(cx) ((cx)->blk_loop.my_op->op_nextop + 0)
+#else
+# define PUSHLOOP_OP_NEXT cx->blk_loop.next_op = cLOOP->op_nextop
+# define CX_LOOP_NEXTOP_GET(cx) ((cx)->blk_loop.next_op + 0)
#endif
#define PUSHLOOP(cx, dat, s) \
cx->blk_loop.label = PL_curcop->cop_label; \
cx->blk_loop.resetsp = s - PL_stack_base; \
- cx->blk_loop.redo_op = cLOOP->op_redoop; \
- cx->blk_loop.next_op = cLOOP->op_nextop; \
- cx->blk_loop.last_op = cLOOP->op_lastop; \
- cx->blk_loop.iterlval = Nullsv; \
+ cx->blk_loop.my_op = cLOOP; \
+ PUSHLOOP_OP_NEXT; \
+ cx->blk_loop.iterlval = NULL; \
cx->blk_loop.iterary = NULL; \
cx->blk_loop.iterix = -1; \
CX_ITERDATA_SET(cx,dat);
SvREFCNT_dec(cx->blk_loop.iterlval); \
if (CxITERVAR(cx)) { \
if (SvPADMY(cx->blk_loop.itersave)) { \
- SV **s_v_p = CxITERVAR(cx); \
+ SV ** const s_v_p = CxITERVAR(cx); \
sv_2mortal(*s_v_p); \
*s_v_p = cx->blk_loop.itersave; \
} \
/* context common to subroutines, evals and loops */
struct block {
+ U16 blku_type; /* what kind of context this is */
+ U8 blku_gimme; /* is this block running in list context? */
+ U8 blku_spare; /* Padding to match with struct subst */
I32 blku_oldsp; /* stack pointer to copy stuff down to */
COP * blku_oldcop; /* old curcop pointer */
I32 blku_oldmarksp; /* mark stack index */
I32 blku_oldscopesp; /* scope stack index */
PMOP * blku_oldpm; /* values of pattern match vars */
- U8 blku_gimme; /* is this block running in list context? */
union {
struct block_sub blku_sub;
/* substitution context */
struct subst {
+ U16 sbu_type; /* what kind of context this is */
+ U8 sbu_once; /* Actually both booleans, but U8 to matches */
+ U8 sbu_rxtainted; /* struct block */
I32 sbu_iters;
I32 sbu_maxiters;
I32 sbu_rflags;
I32 sbu_oldsave;
- bool sbu_once;
- bool sbu_rxtainted;
char * sbu_orig;
SV * sbu_dstr;
SV * sbu_targ;
cx->sb_s = s, \
cx->sb_m = m, \
cx->sb_strend = strend, \
- cx->sb_rxres = Null(void*), \
+ cx->sb_rxres = NULL, \
cx->sb_rx = rx, \
cx->cx_type = CXt_SUBST; \
- rxres_save(&cx->sb_rxres, rx)
+ rxres_save(&cx->sb_rxres, rx); \
+ (void)ReREFCNT_inc(rx)
#define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \
- rxres_free(&cx->sb_rxres)
+ rxres_free(&cx->sb_rxres); \
+ ReREFCNT_dec(cx->sb_rx)
struct context {
- U32 cx_type; /* what kind of context this is */
union {
struct block cx_blk;
struct subst cx_subst;
} cx_u;
};
+#define cx_type cx_u.cx_subst.sbu_type
#define CXTYPEMASK 0xff
#define CXt_NULL 0
#define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */
#define G_NODEBUG 32 /* Disable debugging at toplevel. */
#define G_METHOD 64 /* Calling method. */
+#define G_FAKINGEVAL 256 /* Faking an eval context for call_sv or
+ fold_constants. */
/* flag bits for PL_in_eval */
#define EVAL_NULL 0 /* not in an eval */
struct stackinfo {
AV * si_stack; /* stack for current runlevel */
PERL_CONTEXT * si_cxstack; /* context stack for runlevel */
+ struct stackinfo * si_prev;
+ struct stackinfo * si_next;
I32 si_cxix; /* current context index */
I32 si_cxmax; /* maximum allocated index */
I32 si_type; /* type of runlevel */
- struct stackinfo * si_prev;
- struct stackinfo * si_next;
I32 si_markoff; /* offset where markstack begins for us.
* currently used only with DEBUGGING,
* but not #ifdef-ed for bincompat */
CATCH_SET(multicall_oldcatch); \
LEAVE; \
} STMT_END
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */
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