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Don't count PL_sv_{undef,no,yes} in the size returned
[p5sagit/Devel-Size.git] / Size.xs
diff --git a/Size.xs b/Size.xs
index 6eb2982..c533942 100644 (file)
--- a/Size.xs
+++ b/Size.xs
@@ -83,11 +83,9 @@ check_new(struct state *st, const void *const p) {
     U8 **leaf_p;
     U8 *leaf;
     unsigned int i;
-    void **tv_p;
+    void **tv_p = (void **) (st->tracking);
 
-
-    if (NULL == p || NULL == st) return FALSE;
-    tv_p = (void **) (st->tracking);
+    if (NULL == p) return FALSE;
     TRY_TO_CATCH_SEGV { 
         const char c = *(const char *)p;
     }
@@ -162,7 +160,8 @@ free_state(struct state *st)
     Safefree(st);
 }
 
-static void thing_size(pTHX_ const SV *const, struct state *);
+static void sv_size(pTHX_ struct state *, const SV *const, bool recurse);
+
 typedef enum {
     OPc_NULL,   /* 0 */
     OPc_BASEOP, /* 1 */
@@ -410,7 +409,7 @@ op_size(pTHX_ const OP * const baseop, struct state *st)
       case OPc_SVOP: TAG;
         st->total_size += sizeof(struct pmop);
         if (check_new(st, cSVOPx(baseop)->op_sv)) {
-          thing_size(aTHX_ cSVOPx(baseop)->op_sv, st);
+           sv_size(aTHX_ st, cSVOPx(baseop)->op_sv, TRUE);
         }
         TAG;break;
       case OPc_PADOP: TAG;
@@ -447,10 +446,10 @@ op_size(pTHX_ const OP * const baseop, struct state *st)
           check_new_and_strlen(st, basecop->cop_stashpv);
 #else
           if (check_new(st, basecop->cop_stash)) {
-             thing_size(aTHX_ (SV *)basecop->cop_stash, st);
+             sv_size(aTHX_ st, (SV *)basecop->cop_stash, TRUE);
           }
           if (check_new(st, basecop->cop_filegv)) {
-             thing_size(aTHX_ (SV *)basecop->cop_filegv, st);
+             sv_size(aTHX_ st, (SV *)basecop->cop_filegv, TRUE);
           }
 #endif
 
@@ -471,7 +470,8 @@ op_size(pTHX_ const OP * const baseop, struct state *st)
 #endif
 
 static void
-thing_size(pTHX_ const SV * const orig_thing, struct state *st) {
+sv_size(pTHX_ struct state *const st, const SV * const orig_thing,
+       const bool recurse) {
   const SV *thing = orig_thing;
 
   st->total_size += sizeof(SV);
@@ -511,16 +511,16 @@ thing_size(pTHX_ const SV * const orig_thing, struct state *st) {
        much has been allocated */
   case SVt_PV: TAG;
     st->total_size += sizeof(XPV);
-    if(SvROK(thing))
-       thing_size(aTHX_ SvRV_const(thing), st);
+    if(recurse && SvROK(thing))
+       sv_size(aTHX_ st, SvRV_const(thing), TRUE);
     else
        st->total_size += SvLEN(thing);
     TAG;break;
     /* A string with an integer part? */
   case SVt_PVIV: TAG;
     st->total_size += sizeof(XPVIV);
-    if(SvROK(thing))
-       thing_size(aTHX_ SvRV_const(thing), st);
+    if(recurse && SvROK(thing))
+       sv_size(aTHX_ st, SvRV_const(thing), TRUE);
     else
        st->total_size += SvLEN(thing);
     if(SvOOK(thing)) {
@@ -530,15 +530,15 @@ thing_size(pTHX_ const SV * const orig_thing, struct state *st) {
     /* A scalar/string/reference with a float part? */
   case SVt_PVNV: TAG;
     st->total_size += sizeof(XPVNV);
-    if(SvROK(thing))
-       thing_size(aTHX_ SvRV_const(thing), st);
+    if(recurse && SvROK(thing))
+       sv_size(aTHX_ st, SvRV_const(thing), TRUE);
     else
        st->total_size += SvLEN(thing);
     TAG;break;
   case SVt_PVMG: TAG;
     st->total_size += sizeof(XPVMG);
-    if(SvROK(thing))
-       thing_size(aTHX_ SvRV_const(thing), st);
+    if(recurse && SvROK(thing))
+       sv_size(aTHX_ st, SvRV_const(thing), TRUE);
     else
        st->total_size += SvLEN(thing);
     magic_size(thing, st);
@@ -546,8 +546,8 @@ thing_size(pTHX_ const SV * const orig_thing, struct state *st) {
 #if PERL_VERSION <= 8
   case SVt_PVBM: TAG;
     st->total_size += sizeof(XPVBM);
-    if(SvROK(thing))
-       thing_size(aTHX_ SvRV_const(thing), st);
+    if(recurse && SvROK(thing))
+       sv_size(aTHX_ st, SvRV_const(thing), TRUE);
     else
        st->total_size += SvLEN(thing);
     magic_size(thing, st);
@@ -555,8 +555,8 @@ thing_size(pTHX_ const SV * const orig_thing, struct state *st) {
 #endif
   case SVt_PVLV: TAG;
     st->total_size += sizeof(XPVLV);
-    if(SvROK(thing))
-       thing_size(aTHX_ SvRV_const(thing), st);
+    if(recurse && SvROK(thing))
+       sv_size(aTHX_ st, SvRV_const(thing), TRUE);
     else
        st->total_size += SvLEN(thing);
     magic_size(thing, st);
@@ -588,7 +588,7 @@ thing_size(pTHX_ const SV * const orig_thing, struct state *st) {
        complain about AvARYLEN() passing thing to it.  */
     if (AvARYLEN(thing)) {
       if (check_new(st, AvARYLEN(thing))) {
-         thing_size(aTHX_ AvARYLEN(thing), st);
+         sv_size(aTHX_ st, AvARYLEN(thing), TRUE);
       }
     }
 #endif
@@ -625,24 +625,24 @@ thing_size(pTHX_ const SV * const orig_thing, struct state *st) {
 
     st->total_size += ((XPVIO *) SvANY(thing))->xpv_len;
     if (check_new(st, CvSTASH(thing))) {
-      thing_size(aTHX_ (SV *)CvSTASH(thing), st);
+       sv_size(aTHX_ st, (SV *)CvSTASH(thing), TRUE);
     }
     if (check_new(st, SvSTASH(thing))) {
-      thing_size(aTHX_ (SV *)SvSTASH(thing), st);
+       sv_size(aTHX_ st, (SV *)SvSTASH(thing), TRUE);
     }
     if (check_new(st, CvGV(thing))) {
-      thing_size(aTHX_ (SV *)CvGV(thing), st);
+       sv_size(aTHX_ st, (SV *)CvGV(thing), TRUE);
     }
     if (check_new(st, CvPADLIST(thing))) {
-      thing_size(aTHX_ (SV *)CvPADLIST(thing), st);
+       sv_size(aTHX_ st, (SV *)CvPADLIST(thing), TRUE);
     }
     if (check_new(st, CvOUTSIDE(thing))) {
-      thing_size(aTHX_ (SV *)CvOUTSIDE(thing), st);
+       sv_size(aTHX_ st, (SV *)CvOUTSIDE(thing), TRUE);
     }
     if (CvISXSUB(thing)) {
        SV *sv = cv_const_sv((CV *)thing);
        if (sv) {
-           thing_size(aTHX_ sv, st);
+           sv_size(aTHX_ st, sv, TRUE);
        }
     } else {
        op_size(aTHX_ CvSTART(thing), st);
@@ -665,22 +665,22 @@ thing_size(pTHX_ const SV * const orig_thing, struct state *st) {
     {
       SV *generic_thing;
       if ((generic_thing = (SV *)(GvGP(thing)->gp_sv))) {
-        thing_size(aTHX_ generic_thing, st);
+         sv_size(aTHX_ st, generic_thing, TRUE);
       }
       if ((generic_thing = (SV *)(GvGP(thing)->gp_form))) {
-        thing_size(aTHX_ generic_thing, st);
+         sv_size(aTHX_ st, generic_thing, TRUE);
       }
       if ((generic_thing = (SV *)(GvGP(thing)->gp_av))) {
-        thing_size(aTHX_ generic_thing, st);
+         sv_size(aTHX_ st, generic_thing, TRUE);
       }
       if ((generic_thing = (SV *)(GvGP(thing)->gp_hv))) {
-        thing_size(aTHX_ generic_thing, st);
+         sv_size(aTHX_ st, generic_thing, TRUE);
       }
       if ((generic_thing = (SV *)(GvGP(thing)->gp_egv))) {
-        thing_size(aTHX_ generic_thing, st);
+         sv_size(aTHX_ st, generic_thing, TRUE);
       }
       if ((generic_thing = (SV *)(GvGP(thing)->gp_cv))) {
-        thing_size(aTHX_ generic_thing, st);
+         sv_size(aTHX_ st, generic_thing, TRUE);
       }
     }
       }
@@ -691,10 +691,10 @@ thing_size(pTHX_ const SV * const orig_thing, struct state *st) {
     magic_size(thing, st);
     st->total_size += ((XPVIO *) SvANY(thing))->xpv_len;
     if (check_new(st, CvPADLIST(thing))) {
-      thing_size(aTHX_ (SV *)CvPADLIST(thing), st);
+       sv_size(aTHX_ st, (SV *)CvPADLIST(thing), TRUE);
     }
     if (check_new(st, CvOUTSIDE(thing))) {
-      thing_size(aTHX_ (SV *)CvOUTSIDE(thing), st);
+       sv_size(aTHX_ st, (SV *)CvOUTSIDE(thing), TRUE);
     }
 
     if (st->go_yell && !st->fm_whine) {
@@ -714,13 +714,13 @@ thing_size(pTHX_ const SV * const orig_thing, struct state *st) {
     check_new_and_strlen(st, ((XPVIO *) SvANY(thing))->xio_bottom_name);
     /* Throw the GVs on the list to be walked if they're not-null */
     if (((XPVIO *) SvANY(thing))->xio_top_gv) {
-      thing_size(aTHX_ (SV *)((XPVIO *) SvANY(thing))->xio_top_gv, st);
+       sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_top_gv, TRUE);
     }
     if (((XPVIO *) SvANY(thing))->xio_bottom_gv) {
-      thing_size(aTHX_ (SV *)((XPVIO *) SvANY(thing))->xio_bottom_gv, st);
+       sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_bottom_gv, TRUE);
     }
     if (((XPVIO *) SvANY(thing))->xio_fmt_gv) {
-      thing_size(aTHX_ (SV *)((XPVIO *) SvANY(thing))->xio_fmt_gv, st);
+       sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_fmt_gv, TRUE);
     }
 
     /* Only go trotting through the IO structures if they're really
@@ -749,6 +749,9 @@ new_state(pTHX)
     if (NULL != (warn_flag = perl_get_sv("Devel::Size::dangle", FALSE))) {
        st->dangle_whine = SvIV(warn_flag) ? TRUE : FALSE;
     }
+    check_new(st, &PL_sv_undef);
+    check_new(st, &PL_sv_no);
+    check_new(st, &PL_sv_yes);
     return st;
 }
 
@@ -776,7 +779,7 @@ CODE:
   }
 #endif
 
-  thing_size(aTHX_ thing, st);
+  sv_size(aTHX_ st, thing, FALSE);
   RETVAL = st->total_size;
   free_state(st);
 }
@@ -899,7 +902,7 @@ CODE:
     }
       }
       
-      thing_size(aTHX_ thing, st);
+      sv_size(aTHX_ st, thing, TRUE);
     } else {
     /* check_new() returned false: */
 #ifdef DEVEL_SIZE_DEBUGGING
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