This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Update from y2038 project.
[perl5.git] / cop.h
diff --git a/cop.h b/cop.h
index ca9dae2..85ec068 100644 (file)
--- a/cop.h
+++ b/cop.h
@@ -139,7 +139,7 @@ struct cop {
     /* 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 */
+    /* 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 */
@@ -191,18 +191,12 @@ struct cop {
                                 ? gv_stashpv(CopSTASHPV(c),GV_ADD) : NULL)
 #  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) = 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)
@@ -219,19 +213,17 @@ struct cop {
 #  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)) : 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) = NULL))
-#  define CopLABEL_free(c)     (Safefree(CopLABEL(c)),(CopLABEL(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)
@@ -407,7 +399,7 @@ struct block_eval {
 #define CxOLD_IN_EVAL(cx)      (((cx)->blk_u16) & 0x7F)
 #define CxOLD_OP_TYPE(cx)      (((cx)->blk_u16) >> 7)
 
-#define PUSHEVAL(cx,n,fgv)                                             \
+#define PUSHEVAL(cx,n)                                                 \
     STMT_START {                                                       \
        assert(!(PL_in_eval & ~0x7F));                                  \
        assert(!(PL_op->op_type & ~0x1FF));                             \
@@ -436,13 +428,13 @@ struct block_loop {
     /* (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;
     union {
        struct { /* valid if type is LOOP_FOR or LOOP_PLAIN (but {NULL,0})*/
            AV * ary; /* use the stack if this is NULL */
@@ -461,28 +453,22 @@ struct block_loop {
 
 #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)) && SvPADMY(*CxITERVAR(cx))) \
-           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))                       \
-           && SvPADMY(*CxITERVAR(cx)))                                 \
-           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 + (c)->blk_oldcop->cop_label)
+#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)
 
@@ -500,27 +486,21 @@ struct block_loop {
        PUSHLOOP_OP_NEXT;                                               \
        cx->blk_loop.state_u.ary.ary = NULL;                            \
        cx->blk_loop.state_u.ary.ix = 0;                                \
-       CX_ITERDATA_SET(cx,NULL);
+       CX_ITERDATA_SET(cx, NULL, 0);
 
-#define PUSHLOOP_FOR(cx, dat, s)                                       \
+#define PUSHLOOP_FOR(cx, dat, s, offset)                               \
        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,dat);
+       CX_ITERDATA_SET(cx, dat, offset);
 
 #define POPLOOP(cx)                                                    \
        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.itersave) {                                    \
-           SV ** const s_v_p = CxITERVAR(cx);                          \
-           assert(SvPADMY(cx->blk_loop.itersave));                     \
-           sv_2mortal(*s_v_p);                                         \
-           *s_v_p = cx->blk_loop.itersave;                             \
-       }                                                               \
        if (CxTYPE(cx) == CXt_LOOP_FOR)                                 \
            SvREFCNT_dec(cx->blk_loop.state_u.ary.ary);
 
@@ -662,20 +642,27 @@ struct context {
 };
 #define cx_type cx_u.cx_subst.sbu_type
 
+/* 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_WHEN       3
-#define CXt_SUBST      4
-#define CXt_BLOCK      5
-#define CXt_FORMAT     6
-#define CXt_GIVEN      7
+#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   8
-#define CXt_LOOP_PLAIN 9
-#define CXt_LOOP_LAZYSV        10
-#define CXt_LOOP_LAZYIV        11
+#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
@@ -694,15 +681,14 @@ struct context {
 /* private flags for CXt_LOOP */
 #define CXp_FOR_DEF    0x10    /* foreach using $_ */
 #ifdef USE_ITHREADS
-#  define CXp_PADVAR   0x20    /* itervar lives on pad, iterdata has pad
-                                  offset; if not set, iterdata holds GV* */
-#  define CxPADLOOP(c) (CxTYPE_is_LOOP(c) && ((c)->cx_type & (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) == 0x8)
+#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 & (CXTYPEMASK|CXp_REAL))         \