/* cop.h
*
- * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005, 2006 by Larry Wall and others
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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.
*
- * Control ops (cops) are one of the three ops OP_NEXTSTATE, OP_DBSTATE,
- * and OP_SETSTATE that (loosely speaking) are separate statements.
+ * Control ops (cops) are one of the two ops OP_NEXTSTATE and OP_DBSTATE,
+ * that (loosely speaking) are separate statements.
* They hold information important for lexical state and error reporting.
* At run time, PL_curcop is set to point to the most recently executed cop,
* and thus can be used to determine our current state.
*/
/* A jmpenv packages the state required to perform a proper non-local jump.
- * Note that there is a start_env initialized when perl starts, and top_env
- * points to this initially, so top_env should always be non-null.
+ * Note that there is a PL_start_env initialized when perl starts, and
+ * PL_top_env points to this initially, so PL_top_env should always be
+ * non-null.
*
- * Existence of a non-null top_env->je_prev implies it is valid to call
- * longjmp() at that runlevel (we make sure start_env.je_prev is always
+ * Existence of a non-null PL_top_env->je_prev implies it is valid to call
+ * longjmp() at that runlevel (we make sure PL_start_env.je_prev is always
* null to ensure this).
*
* je_mustcatch, when set at any runlevel to TRUE, means eval ops must
#define JMPENV_PUSH(v) \
STMT_START { \
- DEBUG_l(Perl_deb(aTHX_ "Setting up jumplevel %p, was %p\n", \
- (void*)&cur_env, (void*)PL_top_env)); \
+ DEBUG_l({ \
+ int i = 0; JMPENV *p = PL_top_env; \
+ while (p) { i++; p = p->je_prev; } \
+ Perl_deb(aTHX_ "JUMPENV_PUSH level=%d at %s:%d\n", \
+ i, __FILE__, __LINE__);}) \
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", \
- (void*)PL_top_env, (void*)cur_env.je_prev)); \
+ DEBUG_l({ \
+ int i = -1; JMPENV *p = PL_top_env; \
+ while (p) { i++; p = p->je_prev; } \
+ Perl_deb(aTHX_ "JUMPENV_POP level=%d at %s:%d\n", \
+ i, __FILE__, __LINE__);}) \
+ assert(PL_top_env == &cur_env); \
PL_top_env = cur_env.je_prev; \
} STMT_END
#define JMPENV_JUMP(v) \
STMT_START { \
+ DEBUG_l({ \
+ int i = -1; JMPENV *p = PL_top_env; \
+ while (p) { i++; p = p->je_prev; } \
+ Perl_deb(aTHX_ "JUMPENV_JUMP(%d) level=%d at %s:%d\n", \
+ (int)v, i, __FILE__, __LINE__);}) \
OP_REG_TO_MEM; \
if (PL_top_env->je_prev) \
PerlProc_longjmp(PL_top_env->je_buf, (v)); \
} STMT_END
#define CATCH_GET (PL_top_env->je_mustcatch)
-#define CATCH_SET(v) (PL_top_env->je_mustcatch = (v))
+#define CATCH_SET(v) \
+ STMT_START { \
+ DEBUG_l( \
+ Perl_deb(aTHX_ \
+ "JUMPLEVEL set catch %d => %d (for %p) at %s:%d\n", \
+ PL_top_env->je_mustcatch, v, (void*)PL_top_env, \
+ __FILE__, __LINE__);) \
+ PL_top_env->je_mustcatch = (v); \
+ } STMT_END
+#include "mydtrace.h"
struct cop {
BASEOP
- char * cop_label; /* label for this construct */
+ /* 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 */
+ /* label for this construct is now stored in cop_hints_hash */
#ifdef USE_ITHREADS
char * cop_stashpv; /* package line was compiled in */
char * cop_file; /* file name the following line # is from */
#endif
U32 cop_hints; /* hints bits from pragmata */
U32 cop_seq; /* parse sequence number */
- line_t cop_line; /* line # of this command */
/* 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
# 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) \
# 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 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)
# ifdef DEBUGGING
# else
# define CopFILEAVx(c) (GvAV(CopFILEGV(c)))
# endif
-# define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : NULL)
+# define CopFILE(c) (CopFILEGV(c) && GvSV(CopFILEGV(c)) \
+ ? SvPVX(GvSV(CopFILEGV(c))) : NULL)
# define CopSTASH(c) ((c)->cop_stash)
# define CopSTASH_set(c,hv) ((c)->cop_stash = (hv))
# define CopSTASHPV(c) (CopSTASH(c) ? HvNAME_get(CopSTASH(c)) : NULL)
# define CopFILE_free(c) (SvREFCNT_dec(CopFILEGV(c)),(CopFILEGV(c) = NULL))
#endif /* USE_ITHREADS */
+#define CopLABEL(c) Perl_fetch_cop_label(aTHX_ (c)->cop_hints_hash, NULL, NULL)
+#define CopLABEL_alloc(pv) ((pv)?savepv(pv):NULL)
#define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv))
#define CopLINE(c) ((c)->cop_line)
#define CopLINE_set(c,l) (CopLINE(c) = (l))
/* OutCopFILE() is CopFILE for output (caller, die, warn, etc.) */
-#ifdef MACOS_TRADITIONAL
-# define OutCopFILE(c) MacPerl_MPWFileName(CopFILE(c))
-#else
-# define OutCopFILE(c) CopFILE(c)
-#endif
+#define OutCopFILE(c) CopFILE(c)
/* If $[ is non-zero, it's stored in cop_hints under the key "$[", and
HINT_ARYBASE is set to indicate this.
#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("$[")), \
+ if ((c) == &PL_compiling) { \
+ SV *val = newSViv(b); \
+ (void)hv_stores(GvHV(PL_hintgv), "$[", val); \
+ mg_set(val); \
+ PL_hints |= HINT_ARYBASE; \
+ } else { \
+ (c)->cop_hints_hash \
+ = Perl_refcounted_he_new(aTHX_ (c)->cop_hints_hash, \
+ newSVpvs_flags("$[", SVs_TEMP), \
sv_2mortal(newSViv(b))); \
+ } \
} \
} STMT_END
/* subroutine context */
struct block_sub {
+ OP * retop; /* op to execute on exit from sub */
+ /* Above here is the same for sub, format and eval. */
CV * cv;
- GV * gv;
- GV * dfoutgv;
+ /* Above here is the same for sub and format. */
AV * savearray;
AV * argarray;
I32 olddepth;
- U8 hasargs;
- U8 lval; /* XXX merge lval and hasargs? */
PAD *oldcomppad;
+};
+
+
+/* format context */
+struct block_format {
OP * retop; /* op to execute on exit from sub */
+ /* Above here is the same for sub, format and eval. */
+ CV * cv;
+ /* Above here is the same for sub and format. */
+ GV * gv;
+ GV * dfoutgv;
};
/* base for the next two macros. Don't use directly.
* decremented by LEAVESUB, the other by LEAVE. */
#define PUSHSUB_BASE(cx) \
+ ENTRY_PROBE(GvENAME(CvGV(cv)), \
+ CopFILE((const COP *)CvSTART(cv)), \
+ CopLINE((const COP *)CvSTART(cv))); \
+ \
cx->blk_sub.cv = cv; \
cx->blk_sub.olddepth = CvDEPTH(cv); \
- cx->blk_sub.hasargs = hasargs; \
+ cx->cx_type |= (hasargs) ? CXp_HASARGS : 0; \
cx->blk_sub.retop = NULL; \
if (!CvDEPTH(cv)) { \
SvREFCNT_inc_simple_void_NN(cv); \
#define PUSHSUB(cx) \
PUSHSUB_BASE(cx) \
- cx->blk_sub.lval = PL_op->op_private & \
+ cx->blk_u16 = PL_op->op_private & \
(OPpLVAL_INTRO|OPpENTERSUB_INARGS);
/* variant for use by OP_DBSTATE, where op_private holds hint bits */
#define PUSHSUB_DB(cx) \
PUSHSUB_BASE(cx) \
- cx->blk_sub.lval = 0;
+ cx->blk_u16 = 0;
-#define PUSHFORMAT(cx) \
- cx->blk_sub.cv = cv; \
- cx->blk_sub.gv = gv; \
- cx->blk_sub.retop = NULL; \
- cx->blk_sub.hasargs = 0; \
- cx->blk_sub.dfoutgv = PL_defoutgv; \
- SvREFCNT_inc_void(cx->blk_sub.dfoutgv)
+#define PUSHFORMAT(cx, retop) \
+ cx->blk_format.cv = cv; \
+ cx->blk_format.gv = gv; \
+ cx->blk_format.retop = (retop); \
+ cx->blk_format.dfoutgv = PL_defoutgv; \
+ SvREFCNT_inc_void(cx->blk_format.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
#define POPSUB(cx,sv) \
STMT_START { \
- if (cx->blk_sub.hasargs) { \
+ RETURN_PROBE(GvENAME(CvGV((const CV*)cx->blk_sub.cv)), \
+ CopFILE((COP*)CvSTART((const CV*)cx->blk_sub.cv)), \
+ CopLINE((COP*)CvSTART((const CV*)cx->blk_sub.cv))); \
+ \
+ if (CxHASARGS(cx)) { \
POP_SAVEARRAY(); \
/* abandon @_ if it got reified */ \
if (AvREAL(cx->blk_sub.argarray)) { \
cx->blk_sub.argarray = newAV(); \
av_extend(cx->blk_sub.argarray, fill); \
AvREIFY_only(cx->blk_sub.argarray); \
- CX_CURPAD_SV(cx->blk_sub, 0) = (SV*)cx->blk_sub.argarray; \
+ CX_CURPAD_SV(cx->blk_sub, 0) = MUTABLE_SV(cx->blk_sub.argarray); \
} \
else { \
CLEAR_ARGARRAY(cx->blk_sub.argarray); \
} \
} \
- sv = (SV*)cx->blk_sub.cv; \
- if (sv && (CvDEPTH((CV*)sv) = cx->blk_sub.olddepth)) \
+ sv = MUTABLE_SV(cx->blk_sub.cv); \
+ if (sv && (CvDEPTH((const CV*)sv) = cx->blk_sub.olddepth)) \
sv = NULL; \
} STMT_END
} STMT_END
#define POPFORMAT(cx) \
- setdefout(cx->blk_sub.dfoutgv); \
- SvREFCNT_dec(cx->blk_sub.dfoutgv);
+ setdefout(cx->blk_format.dfoutgv); \
+ SvREFCNT_dec(cx->blk_format.dfoutgv);
/* eval context */
struct block_eval {
- I32 old_in_eval;
- I32 old_op_type;
+ OP * retop; /* op to execute on exit from eval */
+ /* Above here is the same for sub, format and eval. */
SV * old_namesv;
OP * old_eval_root;
SV * cur_text;
CV * cv;
- OP * retop; /* op to execute on exit from eval */
JMPENV * cur_top_env; /* value of PL_top_env when eval CX created */
};
-#define PUSHEVAL(cx,n,fgv) \
+/* If we ever need more than 512 op types, change the shift from 7.
+ blku_gimme is actually also only 2 bits, so could be merged with something.
+*/
+
+#define CxOLD_IN_EVAL(cx) (((cx)->blk_u16) & 0x7F)
+#define CxOLD_OP_TYPE(cx) (((cx)->blk_u16) >> 7)
+
+#define PUSHEVAL(cx,n) \
STMT_START { \
- cx->blk_eval.old_in_eval = PL_in_eval; \
- cx->blk_eval.old_op_type = PL_op->op_type; \
+ assert(!(PL_in_eval & ~0x7F)); \
+ assert(!(PL_op->op_type & ~0x1FF)); \
+ cx->blk_u16 = (PL_in_eval & 0x7F) | ((U16)PL_op->op_type << 7); \
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.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; \
#define POPEVAL(cx) \
STMT_START { \
- PL_in_eval = cx->blk_eval.old_in_eval; \
- optype = cx->blk_eval.old_op_type; \
+ PL_in_eval = CxOLD_IN_EVAL(cx); \
+ optype = CxOLD_OP_TYPE(cx); \
PL_eval_root = cx->blk_eval.old_eval_root; \
if (cx->blk_eval.old_namesv) \
sv_2mortal(cx->blk_eval.old_namesv); \
/* loop context */
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;
+ PAD *oldcomppad; /* Also used for the GV, if targoffset is 0 */
+ /* This is also accesible via cx->blk_loop.my_op->op_targ */
+ PADOFFSET targoffset;
#else
+ OP * next_op;
SV ** itervar;
#endif
- SV * itersave;
- SV * iterlval;
- AV * iterary;
- IV iterix;
- IV itermax;
+ union {
+ struct { /* valid if type is LOOP_FOR or LOOP_PLAIN (but {NULL,0})*/
+ AV * ary; /* use the stack if this is NULL */
+ IV ix;
+ } ary;
+ struct { /* valid if type is LOOP_LAZYIV */
+ IV cur;
+ IV end;
+ } lazyiv;
+ struct { /* valid if type if LOOP_LAZYSV */
+ SV * cur;
+ SV * end; /* maxiumum value (or minimum in reverse) */
+ } lazysv;
+ } state_u;
};
#ifdef USE_ITHREADS
# define CxITERVAR(c) \
- ((c)->blk_loop.iterdata \
- ? (CxPADLOOP(cx) \
- ? &CX_CURPAD_SV( (c)->blk_loop, \
- INT2PTR(PADOFFSET, (c)->blk_loop.iterdata)) \
- : &GvSV((GV*)(c)->blk_loop.iterdata)) \
+ ((c)->blk_loop.oldcomppad \
+ ? (CxPADLOOP(c) \
+ ? &CX_CURPAD_SV( (c)->blk_loop, (c)->blk_loop.targoffset ) \
+ : &GvSV((GV*)(c)->blk_loop.oldcomppad)) \
: (SV**)NULL)
-# define CX_ITERDATA_SET(cx,idata) \
- CX_CURPAD_SAVE(cx->blk_loop); \
- if ((cx->blk_loop.iterdata = (idata))) \
- cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \
+# define CX_ITERDATA_SET(cx,idata,o) \
+ if ((cx->blk_loop.targoffset = (o))) \
+ CX_CURPAD_SAVE(cx->blk_loop); \
else \
- cx->blk_loop.itersave = NULL;
+ cx->blk_loop.oldcomppad = (idata);
#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 = NULL;
+# define CX_ITERDATA_SET(cx,ivar,o) \
+ cx->blk_loop.itervar = (SV**)(ivar);
+#endif
+#define CxLABEL(c) (0 + CopLABEL((c)->blk_oldcop))
+#define CxHASARGS(c) (((c)->cx_type & CXp_HASARGS) == CXp_HASARGS)
+#define CxLVAL(c) (0 + (c)->blk_u16)
+
+#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; \
+#define PUSHLOOP_PLAIN(cx, s) \
+ cx->blk_loop.resetsp = s - PL_stack_base; \
+ cx->blk_loop.my_op = cLOOP; \
+ PUSHLOOP_OP_NEXT; \
+ cx->blk_loop.state_u.ary.ary = NULL; \
+ cx->blk_loop.state_u.ary.ix = 0; \
+ CX_ITERDATA_SET(cx, NULL, 0);
+
+#define PUSHLOOP_FOR(cx, dat, s, offset) \
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 = NULL; \
- cx->blk_loop.iterary = NULL; \
- cx->blk_loop.iterix = -1; \
- CX_ITERDATA_SET(cx,dat);
+ cx->blk_loop.my_op = cLOOP; \
+ PUSHLOOP_OP_NEXT; \
+ cx->blk_loop.state_u.ary.ary = NULL; \
+ cx->blk_loop.state_u.ary.ix = 0; \
+ CX_ITERDATA_SET(cx, dat, offset);
#define POPLOOP(cx) \
- SvREFCNT_dec(cx->blk_loop.iterlval); \
- if (CxITERVAR(cx)) { \
- if (SvPADMY(cx->blk_loop.itersave)) { \
- SV ** const s_v_p = CxITERVAR(cx); \
- sv_2mortal(*s_v_p); \
- *s_v_p = cx->blk_loop.itersave; \
- } \
- else { \
- SvREFCNT_dec(cx->blk_loop.itersave); \
- } \
+ if (CxTYPE(cx) == CXt_LOOP_LAZYSV) { \
+ SvREFCNT_dec(cx->blk_loop.state_u.lazysv.cur); \
+ SvREFCNT_dec(cx->blk_loop.state_u.lazysv.end); \
} \
- if (cx->blk_loop.iterary && cx->blk_loop.iterary != PL_curstack)\
- SvREFCNT_dec(cx->blk_loop.iterary);
+ if (CxTYPE(cx) == CXt_LOOP_FOR) \
+ SvREFCNT_dec(cx->blk_loop.state_u.ary.ary);
/* given/when context */
struct block_givwhen {
/* context common to subroutines, evals and loops */
struct block {
+ U8 blku_type; /* what kind of context this is */
+ U8 blku_gimme; /* is this block running in list context? */
+ U16 blku_u16; /* used by block_sub and block_eval (so far) */
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;
+ struct block_format blku_format;
struct block_eval blku_eval;
struct block_loop blku_loop;
struct block_givwhen blku_givwhen;
#define blk_oldscopesp cx_u.cx_blk.blku_oldscopesp
#define blk_oldpm cx_u.cx_blk.blku_oldpm
#define blk_gimme cx_u.cx_blk.blku_gimme
+#define blk_u16 cx_u.cx_blk.blku_u16
#define blk_sub cx_u.cx_blk.blk_u.blku_sub
+#define blk_format cx_u.cx_blk.blk_u.blku_format
#define blk_eval cx_u.cx_blk.blk_u.blku_eval
#define blk_loop cx_u.cx_blk.blk_u.blku_loop
#define blk_givwhen cx_u.cx_blk.blk_u.blku_givwhen
+#define DEBUG_CX(action) \
+ DEBUG_l(WITH_THX( \
+ Perl_deb(aTHX_ "CX %ld %s %s (scope %ld,%ld) at %s:%d\n", \
+ (long)cxstack_ix, \
+ action, \
+ PL_block_type[CxTYPE(&cxstack[cxstack_ix])], \
+ (long)PL_scopestack_ix, \
+ (long)(cxstack[cxstack_ix].blk_oldscopesp), \
+ __FILE__, __LINE__)));
+
/* Enter a block. */
#define PUSHBLOCK(cx,t,sp) CXINC, cx = &cxstack[cxstack_ix], \
cx->cx_type = t, \
cx->blk_oldscopesp = PL_scopestack_ix, \
cx->blk_oldpm = PL_curpm, \
cx->blk_gimme = (U8)gimme; \
- DEBUG_l( PerlIO_printf(Perl_debug_log, "Entering block %ld, type %s\n", \
- (long)cxstack_ix, PL_block_type[CxTYPE(cx)]); )
+ DEBUG_CX("PUSH");
/* Exit a block (RETURN and LAST). */
-#define POPBLOCK(cx,pm) cx = &cxstack[cxstack_ix--], \
+#define POPBLOCK(cx,pm) \
+ DEBUG_CX("POP"); \
+ cx = &cxstack[cxstack_ix--], \
newsp = PL_stack_base + cx->blk_oldsp, \
PL_curcop = cx->blk_oldcop, \
PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \
PL_scopestack_ix = cx->blk_oldscopesp, \
pm = cx->blk_oldpm, \
- gimme = cx->blk_gimme; \
- DEBUG_SCOPE("POPBLOCK"); \
- DEBUG_l( PerlIO_printf(Perl_debug_log, "Leaving block %ld, type %s\n", \
- (long)cxstack_ix+1,PL_block_type[CxTYPE(cx)]); )
+ gimme = cx->blk_gimme;
/* Continue a block elsewhere (NEXT and REDO). */
-#define TOPBLOCK(cx) cx = &cxstack[cxstack_ix], \
+#define TOPBLOCK(cx) \
+ DEBUG_CX("TOP"); \
+ cx = &cxstack[cxstack_ix], \
PL_stack_sp = PL_stack_base + cx->blk_oldsp, \
PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \
PL_scopestack_ix = cx->blk_oldscopesp, \
- PL_curpm = cx->blk_oldpm; \
- DEBUG_SCOPE("TOPBLOCK");
+ PL_curpm = cx->blk_oldpm;
/* substitution context */
struct subst {
+ U8 sbu_type; /* what kind of context this is */
+ U8 sbu_rflags;
+ U16 sbu_rxtainted; /* matches 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;
#define sb_rxres cx_u.cx_subst.sbu_rxres
#define sb_rx cx_u.cx_subst.sbu_rx
-#define PUSHSUBST(cx) CXINC, cx = &cxstack[cxstack_ix], \
+#ifdef PERL_CORE
+# define PUSHSUBST(cx) CXINC, cx = &cxstack[cxstack_ix], \
cx->sb_iters = iters, \
cx->sb_maxiters = maxiters, \
cx->sb_rflags = r_flags, \
cx->sb_oldsave = oldsave, \
- cx->sb_once = once, \
cx->sb_rxtainted = rxtainted, \
cx->sb_orig = orig, \
cx->sb_dstr = dstr, \
cx->sb_strend = strend, \
cx->sb_rxres = NULL, \
cx->sb_rx = rx, \
- cx->cx_type = CXt_SUBST; \
+ cx->cx_type = CXt_SUBST | (once ? CXp_ONCE : 0); \
rxres_save(&cx->sb_rxres, rx); \
- ReREFCNT_inc(rx)
+ (void)ReREFCNT_inc(rx)
-#define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \
+# define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \
rxres_free(&cx->sb_rxres); \
ReREFCNT_dec(cx->sb_rx)
+#endif
+
+#define CxONCE(cx) ((cx)->cx_type & CXp_ONCE)
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
+/* If you re-order these, there is also an array of uppercase names in perl.h
+ and a static array of context names in pp_ctl.c */
+#define CXTYPEMASK 0xf
#define CXt_NULL 0
-#define CXt_SUB 1
-#define CXt_EVAL 2
-#define CXt_LOOP 3
-#define CXt_SUBST 4
-#define CXt_BLOCK 5
-#define CXt_FORMAT 6
-#define CXt_GIVEN 7
-#define CXt_WHEN 8
-
-/* private flags for CXt_SUB and CXt_NULL */
-#define CXp_MULTICALL 0x00000400 /* part of a multicall (so don't
- tear down context on exit). */
+#define CXt_WHEN 1
+#define CXt_BLOCK 2
+/* When micro-optimising :-) keep GIVEN next to the LOOPs, as these 5 share a
+ jump table in pp_ctl.c
+ The first 4 don't have a 'case' in at least one switch statement in pp_ctl.c
+*/
+#define CXt_GIVEN 3
+/* This is first so that CXt_LOOP_FOR|CXt_LOOP_LAZYIV is CXt_LOOP_LAZYIV */
+#define CXt_LOOP_FOR 4
+#define CXt_LOOP_PLAIN 5
+#define CXt_LOOP_LAZYSV 6
+#define CXt_LOOP_LAZYIV 7
+#define CXt_SUB 8
+#define CXt_FORMAT 9
+#define CXt_EVAL 10
+#define CXt_SUBST 11
+/* SUBST doesn't feature in all switch statements. */
+
+/* private flags for CXt_SUB and CXt_NULL
+ However, this is checked in many places which do not check the type, so
+ this bit needs to be kept clear for most everything else. For reasons I
+ haven't investigated, it can coexist with CXp_FOR_DEF */
+#define CXp_MULTICALL 0x10 /* part of a multicall (so don't
+ tear down context on exit). */
+
+/* private flags for CXt_SUB and CXt_FORMAT */
+#define CXp_HASARGS 0x20
/* private flags for CXt_EVAL */
-#define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */
-#define CXp_TRYBLOCK 0x00000200 /* eval{}, not eval'' or similar */
+#define CXp_REAL 0x20 /* truly eval'', not a lookalike */
+#define CXp_TRYBLOCK 0x40 /* eval{}, not eval'' or similar */
/* private flags for CXt_LOOP */
-#define CXp_FOREACH 0x00000200 /* a foreach loop */
-#define CXp_FOR_DEF 0x00000400 /* foreach using $_ */
+#define CXp_FOR_DEF 0x10 /* foreach using $_ */
#ifdef USE_ITHREADS
-# define CXp_PADVAR 0x00000100 /* itervar lives on pad, iterdata
- has pad offset; if not set,
- iterdata holds GV* */
-# define CxPADLOOP(c) (((c)->cx_type & (CXt_LOOP|CXp_PADVAR)) \
- == (CXt_LOOP|CXp_PADVAR))
+# define CxPADLOOP(c) ((c)->blk_loop.targoffset)
#endif
+/* private flags for CXt_SUBST */
+#define CXp_ONCE 0x10 /* What was sbu_once in struct subst */
+
#define CxTYPE(c) ((c)->cx_type & CXTYPEMASK)
+#define CxTYPE_is_LOOP(c) (((c)->cx_type & 0xC) == 0x4)
#define CxMULTICALL(c) (((c)->cx_type & CXp_MULTICALL) \
== CXp_MULTICALL)
-#define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \
+#define CxREALEVAL(c) (((c)->cx_type & (CXTYPEMASK|CXp_REAL)) \
== (CXt_EVAL|CXp_REAL))
-#define CxTRYBLOCK(c) (((c)->cx_type & (CXt_EVAL|CXp_TRYBLOCK)) \
+#define CxTRYBLOCK(c) (((c)->cx_type & (CXTYPEMASK|CXp_TRYBLOCK)) \
== (CXt_EVAL|CXp_TRYBLOCK))
-#define CxFOREACH(c) (((c)->cx_type & (CXt_LOOP|CXp_FOREACH)) \
- == (CXt_LOOP|CXp_FOREACH))
-#define CxFOREACHDEF(c) (((c)->cx_type & (CXt_LOOP|CXp_FOREACH|CXp_FOR_DEF))\
- == (CXt_LOOP|CXp_FOREACH|CXp_FOR_DEF))
+#define CxFOREACH(c) (CxTYPE_is_LOOP(c) && CxTYPE(c) != CXt_LOOP_PLAIN)
+#define CxFOREACHDEF(c) ((CxTYPE_is_LOOP(c) && CxTYPE(c) != CXt_LOOP_PLAIN) \
+ && ((c)->cx_type & CXp_FOR_DEF))
#define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc()))
=cut
*/
-#define G_SCALAR 0
-#define G_ARRAY 1
-#define G_VOID 128 /* skip this bit when adding flags below */
+#define G_SCALAR 2
+#define G_ARRAY 3
+#define G_VOID 1
+#define G_WANT 3
/* extra flags for Perl_call_* routines */
-#define G_DISCARD 2 /* Call FREETMPS. */
-#define G_EVAL 4 /* Assume eval {} around subroutine call. */
-#define G_NOARGS 8 /* Don't construct a @_ array. */
-#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 en eval context for call_sv or
+#define G_DISCARD 4 /* Call FREETMPS.
+ Don't change this without consulting the
+ hash actions codes defined in hv.h */
+#define G_EVAL 8 /* Assume eval {} around subroutine call. */
+#define G_NOARGS 16 /* Don't construct a @_ array. */
+#define G_KEEPERR 32 /* Append errors to $@, don't overwrite it */
+#define G_NODEBUG 64 /* Disable debugging at toplevel. */
+#define G_METHOD 128 /* Calling method. */
+#define G_FAKINGEVAL 256 /* Faking an eval context for call_sv or
fold_constants. */
+#define G_UNDEF_FILL 512 /* Fill the stack with &PL_sv_undef
+ A special case for UNSHIFT in
+ Perl_magic_methcall(). */
/* 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 */
#define PUSHSTACKi(type) \
STMT_START { \
PERL_SI *next = PL_curstackinfo->si_next; \
+ DEBUG_l({ \
+ int i = 0; PERL_SI *p = PL_curstackinfo; \
+ while (p) { i++; p = p->si_prev; } \
+ Perl_deb(aTHX_ "push STACKINFO %d at %s:%d\n", \
+ i, __FILE__, __LINE__);}) \
if (!next) { \
next = new_stackinfo(32, 2048/sizeof(PERL_CONTEXT) - 1); \
next->si_prev = PL_curstackinfo; \
STMT_START { \
dSP; \
PERL_SI * const prev = PL_curstackinfo->si_prev; \
+ DEBUG_l({ \
+ int i = -1; PERL_SI *p = PL_curstackinfo; \
+ while (p) { i++; p = p->si_prev; } \
+ Perl_deb(aTHX_ "pop STACKINFO %d at %s:%d\n", \
+ i, __FILE__, __LINE__);}) \
if (!prev) { \
PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \
my_exit(1); \
multicall_oldcatch = CATCH_GET; \
SAVETMPS; SAVEVPTR(PL_op); \
CATCH_SET(TRUE); \
+ PUSHSTACKi(PERLSI_SORT); \
PUSHBLOCK(cx, CXt_SUB|CXp_MULTICALL, PL_stack_sp); \
PUSHSUB(cx); \
if (++CvDEPTH(cv) >= 2) { \
LEAVESUB(multicall_cv); \
CvDEPTH(multicall_cv)--; \
POPBLOCK(cx,PL_curpm); \
+ POPSTACK; \
CATCH_SET(multicall_oldcatch); \
LEAVE; \
+ SPAGAIN; \
} STMT_END
/*
https://perl5.git.perl.org / perl5.git / blobdiff