X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=Size.xs;h=f06f85e537bca9319ef0b93b10014d78a5772c92;hb=e0d4117e5dc4fe3966f1b0a7782b494d5d94d8bc;hp=6c13401475f80a6ff04354c02959493b4e9a6272;hpb=a0a834e7adba366e50a5de19cc3a5a66e2f2bd14;p=p5sagit%2FDevel-Size.git

diff --git a/Size.xs b/Size.xs
index 6c13401..f06f85e 100644
--- a/Size.xs
+++ b/Size.xs
@@ -1,3 +1,5 @@
+/* -*- mode: C -*- */
+
 #define PERL_NO_GET_CONTEXT
 
 #include "EXTERN.h"
@@ -15,6 +17,22 @@
 #ifndef SvOOK_offset
 #  define SvOOK_offset(sv, len) STMT_START { len = SvIVX(sv); } STMT_END
 #endif
+#ifndef SvIsCOW
+#  define SvIsCOW(sv)           ((SvFLAGS(sv) & (SVf_FAKE | SVf_READONLY)) == \
+                                    (SVf_FAKE | SVf_READONLY))
+#endif
+#ifndef SvIsCOW_shared_hash
+#  define SvIsCOW_shared_hash(sv)   (SvIsCOW(sv) && SvLEN(sv) == 0)
+#endif
+#ifndef SvSHARED_HEK_FROM_PV
+#  define SvSHARED_HEK_FROM_PV(pvx) \
+        ((struct hek*)(pvx - STRUCT_OFFSET(struct hek, hek_key)))
+#endif
+
+#if PERL_VERSION < 6
+#  define PL_opargs opargs
+#  define PL_op_name op_name
+#endif
 
 #ifdef _MSC_VER 
 /* "structured exception" handling is a Microsoft extension to C and C++.
@@ -23,7 +41,7 @@
     functionality on other platforms.  */
 #  include <excpt.h>
 #  define TRY_TO_CATCH_SEGV __try
-#  define CAUGHT_EXCEPTION __except(EXCEPTION EXCEPTION_EXECUTE_HANDLER)
+#  define CAUGHT_EXCEPTION __except(EXCEPTION_EXECUTE_HANDLER)
 #else
 #  define TRY_TO_CATCH_SEGV if(1)
 #  define CAUGHT_EXCEPTION else
@@ -141,7 +159,7 @@ free_tracking_at(void **tv, int level)
 	/* Nodes */
 	do {
 	    if (tv[i]) {
-		free_tracking_at(tv[i], level);
+		free_tracking_at((void **) tv[i], level);
 		Safefree(tv[i]);
 	    }
 	} while (i--);
@@ -176,7 +194,7 @@ free_state(struct state *st)
 #define SOME_RECURSION 1
 #define TOTAL_SIZE_RECURSION 2
 
-static bool sv_size(pTHX_ struct state *, const SV *const, const int recurse);
+static void sv_size(pTHX_ struct state *, const SV *const, const int recurse);
 
 typedef enum {
     OPc_NULL,   /* 0 */
@@ -191,6 +209,13 @@ typedef enum {
     OPc_PVOP,   /* 9 */
     OPc_LOOP,   /* 10 */
     OPc_COP /* 11 */
+#ifdef OA_CONDOP
+    , OPc_CONDOP /* 12 */
+#endif
+#ifdef OA_GVOP
+    , OPc_GVOP /* 13 */
+#endif
+
 } opclass;
 
 static opclass
@@ -236,9 +261,17 @@ cc_opclass(const OP * const o)
         case OA_SVOP: TAG;
         return OPc_SVOP;
 
+#ifdef OA_PADOP
         case OA_PADOP: TAG;
         return OPc_PADOP;
+#endif
+
+#ifdef OA_GVOP
+        case OA_GVOP: TAG;
+        return OPc_GVOP;
+#endif
 
+#ifdef OA_PVOP_OR_SVOP
         case OA_PVOP_OR_SVOP: TAG;
             /*
              * Character translations (tr///) are usually a PVOP, keeping a 
@@ -249,6 +282,7 @@ cc_opclass(const OP * const o)
              */
         return (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF))
             ? OPc_SVOP : OPc_PVOP;
+#endif
 
         case OA_LOOP: TAG;
         return OPc_LOOP;
@@ -298,6 +332,11 @@ cc_opclass(const OP * const o)
             return OPc_BASEOP;
         else
             return OPc_PVOP;
+
+#ifdef OA_CONDOP
+        case OA_CONDOP: TAG;
+	    return OPc_CONDOP;
+#endif
         }
         warn("Devel::Size: Can't determine class of operator %s, assuming BASEOP\n",
          PL_op_name[o->op_type]);
@@ -402,6 +441,14 @@ op_size(pTHX_ const OP * const baseop, struct state *st)
 	    op_size(aTHX_ ((BINOP *)baseop)->op_first, st);
 	    op_size(aTHX_ ((LOGOP *)baseop)->op_other, st);
 	    TAG;break;
+#ifdef OA_CONDOP
+	case OPc_CONDOP: TAG;
+	    st->total_size += sizeof(struct condop);
+	    op_size(aTHX_ ((BINOP *)baseop)->op_first, st);
+	    op_size(aTHX_ ((CONDOP *)baseop)->op_true, st);
+	    op_size(aTHX_ ((CONDOP *)baseop)->op_false, st);
+	    TAG;break;
+#endif
 	case OPc_LISTOP: TAG;
 	    st->total_size += sizeof(struct listop);
 	    op_size(aTHX_ ((LISTOP *)baseop)->op_first, st);
@@ -431,9 +478,17 @@ op_size(pTHX_ const OP * const baseop, struct state *st)
 		sv_size(aTHX_ st, ((SVOP *)baseop)->op_sv, SOME_RECURSION);
 	    }
 	    TAG;break;
+#ifdef OA_PADOP
       case OPc_PADOP: TAG;
 	  st->total_size += sizeof(struct padop);
 	  TAG;break;
+#endif
+#ifdef OA_GVOP
+      case OPc_GVOP: TAG;
+	  st->total_size += sizeof(struct gvop);
+	  sv_size(aTHX_ st, ((GVOP *)baseop)->op_gv, SOME_RECURSION);
+	  TAG;break;
+#endif
 	case OPc_PVOP: TAG;
 	    check_new_and_strlen(st, ((PVOP *)baseop)->op_pv);
 	    TAG;break;
@@ -481,6 +536,29 @@ op_size(pTHX_ const OP * const baseop, struct state *st)
   }
 }
 
+static void
+hek_size(pTHX_ struct state *st, HEK *hek, U32 shared)
+{
+    /* Hash keys can be shared. Have we seen this before? */
+    if (!check_new(st, hek))
+	return;
+    st->total_size += HEK_BASESIZE + hek->hek_len
+#if PERL_VERSION < 8
+	+ 1 /* No hash key flags prior to 5.8.0  */
+#else
+	+ 2
+#endif
+	;
+    if (shared) {
+#if PERL_VERSION < 10
+	st->total_size += sizeof(struct he);
+#else
+	st->total_size += STRUCT_OFFSET(struct shared_he, shared_he_hek);
+#endif
+    }
+}
+
+
 #if PERL_VERSION < 8 || PERL_SUBVERSION < 9
 #  define SVt_LAST 16
 #endif
@@ -582,19 +660,43 @@ const U8 body_sizes[SVt_LAST] = {
 #endif
 };
 
-static bool
+#ifdef PadlistNAMES
+static void
+padlist_size(pTHX_ struct state *const st, const PADLIST * const padl,
+	const int recurse) {
+    SSize_t i;
+    if (!check_new(st, padl))
+	return;
+    /* This relies on PADNAMELIST and PAD being typedefed to AV.  If that
+       ever changes, this code will need an update. */
+    st->total_size += sizeof(PADLIST);
+    sv_size(aTHX_ st, (SV*)PadlistNAMES(padl), recurse);
+    i = PadlistMAX(padl) + 1;
+    st->total_size += sizeof(PAD*) * i;
+    while (--i)
+	sv_size(aTHX_ st, (SV*)PadlistARRAY(padl)[i], recurse);
+}
+#else 
+static void
+padlist_size(pTHX_ struct state *const st, const AV * const padl,
+	const int recurse) {
+    sv_size(aTHX_ st, (SV*)padl, recurse);
+}
+#endif
+
+static void
 sv_size(pTHX_ struct state *const st, const SV * const orig_thing,
 	const int recurse) {
   const SV *thing = orig_thing;
   U32 type;
 
   if(!check_new(st, thing))
-      return FALSE;
+      return;
 
   type = SvTYPE(thing);
   if (type > SVt_LAST) {
       warn("Devel::Size: Unknown variable type: %d encountered\n", type);
-      return TRUE;
+      return;
   }
   st->total_size += sizeof(SV) + body_sizes[type];
 
@@ -656,23 +758,58 @@ sv_size(pTHX_ struct state *const st, const SV * const orig_thing,
         cur_entry = *(HvARRAY(thing) + cur_bucket);
         while (cur_entry) {
           st->total_size += sizeof(HE);
-          if (cur_entry->hent_hek) {
-            /* Hash keys can be shared. Have we seen this before? */
-            if (check_new(st, cur_entry->hent_hek)) {
-              st->total_size += HEK_BASESIZE + cur_entry->hent_hek->hek_len + 2;
-            }
-          }
+	  hek_size(aTHX_ st, cur_entry->hent_hek, HvSHAREKEYS(thing));
 	  if (recurse >= TOTAL_SIZE_RECURSION)
 	      sv_size(aTHX_ st, HeVAL(cur_entry), recurse);
           cur_entry = cur_entry->hent_next;
         }
       }
     }
+#ifdef HvAUX
+    if (SvOOK(thing)) {
+	/* This direct access is arguably "naughty": */
+	struct mro_meta *meta = HvAUX(thing)->xhv_mro_meta;
+#if PERL_VERSION > 13 || PERL_SUBVERSION > 8
+	/* As is this: */
+	I32 count = HvAUX(thing)->xhv_name_count;
+
+	if (count) {
+	    HEK **names = HvAUX(thing)->xhv_name_u.xhvnameu_names;
+	    if (count < 0)
+		count = -count;
+	    while (--count)
+		hek_size(aTHX_ st, names[count], 1);
+	}
+	else
+#endif
+	{
+	    hek_size(aTHX_ st, HvNAME_HEK(thing), 1);
+	}
+
+	st->total_size += sizeof(struct xpvhv_aux);
+	if (meta) {
+	    st->total_size += sizeof(struct mro_meta);
+	    sv_size(aTHX_ st, (SV *)meta->mro_nextmethod, TOTAL_SIZE_RECURSION);
+#if PERL_VERSION > 10 || (PERL_VERSION == 10 && PERL_SUBVERSION > 0)
+	    sv_size(aTHX_ st, (SV *)meta->isa, TOTAL_SIZE_RECURSION);
+#endif
+#if PERL_VERSION > 10
+	    sv_size(aTHX_ st, (SV *)meta->mro_linear_all, TOTAL_SIZE_RECURSION);
+	    sv_size(aTHX_ st, meta->mro_linear_current, TOTAL_SIZE_RECURSION);
+#else
+	    sv_size(aTHX_ st, (SV *)meta->mro_linear_dfs, TOTAL_SIZE_RECURSION);
+	    sv_size(aTHX_ st, (SV *)meta->mro_linear_c3, TOTAL_SIZE_RECURSION);
+#endif
+	}
+    }
+#else
+    check_new_and_strlen(st, HvNAME_get(thing));
+#endif
     TAG;break;
 
 
   case SVt_PVFM: TAG;
-    sv_size(aTHX_ st, (SV *)CvPADLIST(thing), SOME_RECURSION);
+    padlist_size(aTHX_ st, CvPADLIST(thing), SOME_RECURSION);
     sv_size(aTHX_ st, (SV *)CvOUTSIDE(thing), recurse);
 
     if (st->go_yell && !st->fm_whine) {
@@ -685,11 +822,11 @@ sv_size(pTHX_ struct state *const st, const SV * const orig_thing,
     sv_size(aTHX_ st, (SV *)CvSTASH(thing), SOME_RECURSION);
     sv_size(aTHX_ st, (SV *)SvSTASH(thing), SOME_RECURSION);
     sv_size(aTHX_ st, (SV *)CvGV(thing), SOME_RECURSION);
-    sv_size(aTHX_ st, (SV *)CvPADLIST(thing), SOME_RECURSION);
+    padlist_size(aTHX_ st, CvPADLIST(thing), SOME_RECURSION);
     sv_size(aTHX_ st, (SV *)CvOUTSIDE(thing), recurse);
     if (CvISXSUB(thing)) {
 	sv_size(aTHX_ st, cv_const_sv((CV *)thing), recurse);
-    } else {
+    } else if (CvROOT(thing)) {
 	op_size(aTHX_ CvSTART(thing), st);
 	op_size(aTHX_ CvROOT(thing), st);
     }
@@ -721,8 +858,14 @@ sv_size(pTHX_ struct state *const st, const SV * const orig_thing,
 
   case SVt_PVGV: TAG;
     if(isGV_with_GP(thing)) {
+#ifdef GvNAME_HEK
+	hek_size(aTHX_ st, GvNAME_HEK(thing), 1);
+#else	
 	st->total_size += GvNAMELEN(thing);
-#ifdef GvFILE
+#endif
+#ifdef GvFILE_HEK
+	hek_size(aTHX_ st, GvFILE_HEK(thing), 1);
+#elif defined(GvFILE)
 #  if !defined(USE_ITHREADS) || (PERL_VERSION > 8 || (PERL_VERSION == 8 && PERL_SUBVERSION > 8))
 	/* With itreads, before 5.8.9, this can end up pointing to freed memory
 	   if the GV was created in an eval, as GvFILE() points to CopFILE(),
@@ -758,6 +901,8 @@ sv_size(pTHX_ struct state *const st, const SV * const orig_thing,
   freescalar:
     if(recurse && SvROK(thing))
 	sv_size(aTHX_ st, SvRV_const(thing), recurse);
+    else if (SvIsCOW_shared_hash(thing))
+	hek_size(aTHX_ st, SvSHARED_HEK_FROM_PV(SvPVX(thing)), 1);
     else
 	st->total_size += SvLEN(thing);
 
@@ -769,7 +914,7 @@ sv_size(pTHX_ struct state *const st, const SV * const orig_thing,
     TAG;break;
 
   }
-  return TRUE;
+  return;
 }
 
 static struct state *
@@ -789,6 +934,9 @@ new_state(pTHX)
     check_new(st, &PL_sv_undef);
     check_new(st, &PL_sv_no);
     check_new(st, &PL_sv_yes);
+#if PERL_VERSION > 8 || (PERL_VERSION == 8 && PERL_SUBVERSION > 0)
+    check_new(st, &PL_sv_placeholder);
+#endif
     return st;
 }