without excessive memory needs. The assumption is that your CPU cache
works :-) (And that we're not going to bust it) */
-#define ALIGN_BITS ( sizeof(void*) >> 1 )
#define BYTE_BITS 3
#define LEAF_BITS (16 - BYTE_BITS)
#define LEAF_MASK 0x1FFF
/* Figure out how much magic is attached to the SV and return the
size */
static void
-magic_size(const SV * const thing, struct state *st) {
- MAGIC *magic_pointer;
+magic_size(pTHX_ const SV * const thing, struct state *st) {
+ MAGIC *magic_pointer = SvMAGIC(thing);
- /* Is there any? */
- if (!SvMAGIC(thing)) {
- /* No, bail */
- return;
- }
-
- /* Get the base magic pointer */
- magic_pointer = SvMAGIC(thing);
-
- /* Have we seen the magic pointer? */
+ /* Have we seen the magic pointer? (NULL has always been seen before) */
while (check_new(st, magic_pointer)) {
st->total_size += sizeof(MAGIC);
if (check_new(st, magic_pointer->mg_virtual)) {
st->total_size += sizeof(MGVTBL);
}
+ sv_size(aTHX_ st, magic_pointer->mg_obj, TOTAL_SIZE_RECURSION);
+ if (magic_pointer->mg_len == HEf_SVKEY) {
+ sv_size(aTHX_ st, (SV *)magic_pointer->mg_ptr, TOTAL_SIZE_RECURSION);
+ }
+#if defined(PERL_MAGIC_utf8) && defined (PERL_MAGIC_UTF8_CACHESIZE)
+ else if (magic_pointer->mg_type == PERL_MAGIC_utf8) {
+ if (check_new(st, magic_pointer->mg_ptr)) {
+ st->total_size += PERL_MAGIC_UTF8_CACHESIZE * 2 * sizeof(STRLEN);
+ }
+ }
+#endif
+ else if (magic_pointer->mg_len > 0) {
+ if (check_new(st, magic_pointer->mg_ptr)) {
+ st->total_size += magic_pointer->mg_len;
+ }
+ }
/* Get the next in the chain */
magic_pointer = magic_pointer->mg_moremagic;
st->total_size += sizeof(SV);
+ if (SvTYPE(thing) >= SVt_PVMG) {
+ magic_size(aTHX_ thing, st);
+ }
+
switch (SvTYPE(thing)) {
/* Is it undef? */
case SVt_NULL: TAG;
sv_size(aTHX_ st, SvRV_const(thing), recurse);
TAG;break;
#endif
- /* How about a plain string? In which case we need to add in how
- much has been allocated */
- case SVt_PV: TAG;
- st->total_size += sizeof(XPV);
- if(recurse && SvROK(thing))
- sv_size(aTHX_ st, SvRV_const(thing), recurse);
- else
- st->total_size += SvLEN(thing);
- TAG;break;
- /* A string with an integer part? */
- case SVt_PVIV: TAG;
- st->total_size += sizeof(XPVIV);
- if(recurse && SvROK(thing))
- sv_size(aTHX_ st, SvRV_const(thing), recurse);
- else
- st->total_size += SvLEN(thing);
- if(SvOOK(thing)) {
- st->total_size += SvIVX(thing);
- }
- TAG;break;
- /* A scalar/string/reference with a float part? */
- case SVt_PVNV: TAG;
- st->total_size += sizeof(XPVNV);
- if(recurse && SvROK(thing))
- sv_size(aTHX_ st, SvRV_const(thing), recurse);
- else
- st->total_size += SvLEN(thing);
- TAG;break;
- case SVt_PVMG: TAG;
- st->total_size += sizeof(XPVMG);
- if(recurse && SvROK(thing))
- sv_size(aTHX_ st, SvRV_const(thing), recurse);
- else
- st->total_size += SvLEN(thing);
- magic_size(thing, st);
- TAG;break;
-#if PERL_VERSION <= 8
- case SVt_PVBM: TAG;
- st->total_size += sizeof(XPVBM);
- if(recurse && SvROK(thing))
- sv_size(aTHX_ st, SvRV_const(thing), recurse);
- else
- st->total_size += SvLEN(thing);
- magic_size(thing, st);
- TAG;break;
-#endif
- case SVt_PVLV: TAG;
- st->total_size += sizeof(XPVLV);
- if(recurse && SvROK(thing))
- sv_size(aTHX_ st, SvRV_const(thing), recurse);
- else
- st->total_size += SvLEN(thing);
- magic_size(thing, st);
- TAG;break;
- /* How much space is dedicated to the array? Not counting the
- elements in the array, mind, just the array itself */
+
case SVt_PVAV: TAG;
st->total_size += sizeof(XPVAV);
/* Is there anything in the array? */
complain about AvARYLEN() passing thing to it. */
sv_size(aTHX_ st, AvARYLEN(thing), recurse);
#endif
- magic_size(thing, st);
TAG;break;
case SVt_PVHV: TAG;
/* First the base struct */
}
}
}
- magic_size(thing, st);
TAG;break;
+
+
+ case SVt_PVFM: TAG;
+ st->total_size += sizeof(XPVFM);
+ sv_size(aTHX_ st, (SV *)CvPADLIST(thing), SOME_RECURSION);
+ sv_size(aTHX_ st, (SV *)CvOUTSIDE(thing), recurse);
+
+ if (st->go_yell && !st->fm_whine) {
+ carp("Devel::Size: Calculated sizes for FMs are incomplete");
+ st->fm_whine = 1;
+ }
+ goto freescalar;
+
case SVt_PVCV: TAG;
st->total_size += sizeof(XPVCV);
- magic_size(thing, st);
- st->total_size += ((XPVIO *) SvANY(thing))->xpv_len;
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);
op_size(aTHX_ CvSTART(thing), st);
op_size(aTHX_ CvROOT(thing), st);
}
+ goto freescalar;
+
+ case SVt_PVIO: TAG;
+ st->total_size += sizeof(XPVIO);
+ /* Some embedded char pointers */
+ check_new_and_strlen(st, ((XPVIO *) SvANY(thing))->xio_top_name);
+ check_new_and_strlen(st, ((XPVIO *) SvANY(thing))->xio_fmt_name);
+ 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 */
+ sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_top_gv, recurse);
+ sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_bottom_gv, recurse);
+ sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_fmt_gv, recurse);
+
+ /* Only go trotting through the IO structures if they're really
+ trottable. If USE_PERLIO is defined we can do this. If
+ not... we can't, so we don't even try */
+#ifdef USE_PERLIO
+ /* Dig into xio_ifp and xio_ofp here */
+ warn("Devel::Size: Can't size up perlio layers yet\n");
+#endif
+ goto freescalar;
+
+#if PERL_VERSION <= 8
+ case SVt_PVBM: TAG;
+ st->total_size += sizeof(XPVBM);
+ goto freescalar;
+#endif
+
+ case SVt_PVLV: TAG;
+ st->total_size += sizeof(XPVLV);
+#if (PERL_VERSION < 9)
+ goto freescalar;
+#else
+ goto donegv;
+#endif
- TAG;break;
case SVt_PVGV: TAG;
- magic_size(thing, st);
st->total_size += sizeof(XPVGV);
+#if (PERL_VERSION >= 9)
+ donegv:
+#endif
if(isGV_with_GP(thing)) {
st->total_size += GvNAMELEN(thing);
#ifdef GvFILE
- /* Is there a file? */
+# 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(),
+ and the relevant COP has been freed on scope cleanup after the eval.
+ 5.8.9 adds a binary compatible fudge that catches the vast majority
+ of cases. 5.9.something added a proper fix, by converting the GP to
+ use a shared hash key (porperly reference counted), instead of a
+ char * (owned by who knows? possibly no-one now) */
check_new_and_strlen(st, GvFILE(thing));
+# endif
#endif
/* Is there something hanging off the glob? */
if (check_new(st, GvGP(thing))) {
sv_size(aTHX_ st, (SV *)(GvGP(thing)->gp_egv), recurse);
sv_size(aTHX_ st, (SV *)(GvGP(thing)->gp_cv), recurse);
}
+#if (PERL_VERSION >= 9)
+ TAG; break;
+#endif
}
- TAG;break;
- case SVt_PVFM: TAG;
- st->total_size += sizeof(XPVFM);
- magic_size(thing, st);
- st->total_size += ((XPVIO *) SvANY(thing))->xpv_len;
- sv_size(aTHX_ st, (SV *)CvPADLIST(thing), SOME_RECURSION);
- sv_size(aTHX_ st, (SV *)CvOUTSIDE(thing), recurse);
+ goto freescalar;
- if (st->go_yell && !st->fm_whine) {
- carp("Devel::Size: Calculated sizes for FMs are incomplete");
- st->fm_whine = 1;
+ case SVt_PVMG: TAG;
+ st->total_size += sizeof(XPVMG);
+ goto freescalar;
+
+ case SVt_PVNV: TAG;
+ st->total_size += sizeof(XPVNV);
+ goto freescalar;
+
+ case SVt_PVIV: TAG;
+ st->total_size += sizeof(XPVIV);
+ goto freescalar;
+
+ case SVt_PV: TAG;
+ st->total_size += sizeof(XPV);
+
+ freescalar:
+ if(recurse && SvROK(thing))
+ sv_size(aTHX_ st, SvRV_const(thing), recurse);
+ else
+ st->total_size += SvLEN(thing);
+
+ if(SvOOK(thing)) {
+ st->total_size += SvIVX(thing);
}
TAG;break;
- case SVt_PVIO: TAG;
- st->total_size += sizeof(XPVIO);
- magic_size(thing, st);
- if (check_new(st, (SvPVX_const(thing)))) {
- st->total_size += ((XPVIO *) SvANY(thing))->xpv_cur;
- }
- /* Some embedded char pointers */
- check_new_and_strlen(st, ((XPVIO *) SvANY(thing))->xio_top_name);
- check_new_and_strlen(st, ((XPVIO *) SvANY(thing))->xio_fmt_name);
- 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 */
- sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_top_gv, recurse);
- sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_bottom_gv, recurse);
- sv_size(aTHX_ st, (SV *)((XPVIO *) SvANY(thing))->xio_fmt_gv, recurse);
- /* Only go trotting through the IO structures if they're really
- trottable. If USE_PERLIO is defined we can do this. If
- not... we can't, so we don't even try */
-#ifdef USE_PERLIO
- /* Dig into xio_ifp and xio_ofp here */
- warn("Devel::Size: Can't size up perlio layers yet\n");
-#endif
- TAG;break;
default:
warn("Devel::Size: Unknown variable type: %d encountered\n", SvTYPE(thing) );
}
return TRUE;
}
+/* Frustratingly, the vtables aren't const in perl.h
+ gcc is happy enough to have non-const initialisers in a static array.
+ VC seems not to be. (Is it actually treating the file as C++?)
+ So do the maximally portable thing, unless we know it's gcc, in which case
+ we can do the more space efficient version. */
+
+#if __GNUC__
+void *vtables[] = {
+#include "vtables.inc"
+ NULL
+};
+#endif
+
static struct state *
new_state(pTHX)
{
SV *warn_flag;
struct state *st;
+#if __GNUC__
+ void **vt_p = vtables;
+#endif
+
Newxz(st, 1, struct state);
st->go_yell = TRUE;
if (NULL != (warn_flag = perl_get_sv("Devel::Size::warn", FALSE))) {
check_new(st, &PL_sv_undef);
check_new(st, &PL_sv_no);
check_new(st, &PL_sv_yes);
+#if __GNUC__
+ while(*vt_p)
+ check_new(st, *vt_p++);
+#else
+#include "vtables.inc"
+#endif
return st;
}
projects / p5sagit/Devel-Size.git / blobdiff