[perl5.git] / ext / Devel-Peek / Peek.xs

#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

static bool
_runops_debug(int flag)
{
    dTHX;
    const bool d = PL_runops == Perl_runops_debug;

    if (flag >= 0)
	PL_runops = flag ? Perl_runops_debug : Perl_runops_standard;
    return d;
}

static SV *
DeadCode(pTHX)
{
#ifdef PURIFY
    return Nullsv;
#else
    SV* sva;
    SV* sv;
    SV* ret = newRV_noinc((SV*)newAV());
    register SV* svend;
    int tm = 0, tref = 0, ts = 0, ta = 0, tas = 0;

    for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
	svend = &sva[SvREFCNT(sva)];
	for (sv = sva + 1; sv < svend; ++sv) {
	    if (SvTYPE(sv) == SVt_PVCV) {
		CV *cv = (CV*)sv;
		AV* padlist = CvPADLIST(cv), *argav;
		SV** svp;
		SV** pad;
		int i = 0, j, levelm, totm = 0, levelref, totref = 0;
		int levels, tots = 0, levela, tota = 0, levelas, totas = 0;
		int dumpit = 0;

		if (CvISXSUB(sv)) {
		    continue;		/* XSUB */
		}
		if (!CvGV(sv)) {
		    continue;		/* file-level scope. */
		}
		if (!CvROOT(cv)) {
		    /* PerlIO_printf(Perl_debug_log, "  no root?!\n"); */
		    continue;		/* autoloading stub. */
		}
		do_gvgv_dump(0, Perl_debug_log, "GVGV::GV", CvGV(sv));
		if (CvDEPTH(cv)) {
		    PerlIO_printf(Perl_debug_log, "  busy\n");
		    continue;
		}
		svp = AvARRAY(padlist);
		while (++i <= AvFILL(padlist)) { /* Depth. */
		    SV **args;
		    
		    pad = AvARRAY((AV*)svp[i]);
		    argav = (AV*)pad[0];
		    if (!argav || (SV*)argav == &PL_sv_undef) {
			PerlIO_printf(Perl_debug_log, "    closure-template\n");
			continue;
		    }
		    args = AvARRAY(argav);
		    levelm = levels = levelref = levelas = 0;
		    levela = sizeof(SV*) * (AvMAX(argav) + 1);
		    if (AvREAL(argav)) {
			for (j = 0; j < AvFILL(argav); j++) {
			    if (SvROK(args[j])) {
				PerlIO_printf(Perl_debug_log, "     ref in args!\n");
				levelref++;
			    }
			    /* else if (SvPOK(args[j]) && SvPVX(args[j])) { */
			    else if (SvTYPE(args[j]) >= SVt_PV && SvLEN(args[j])) {
				levelas += SvLEN(args[j])/SvREFCNT(args[j]);
			    }
			}
		    }
		    for (j = 1; j < AvFILL((AV*)svp[1]); j++) {	/* Vars. */
			if (SvROK(pad[j])) {
			    levelref++;
			    do_sv_dump(0, Perl_debug_log, pad[j], 0, 4, 0, 0);
			    dumpit = 1;
			}
			/* else if (SvPOK(pad[j]) && SvPVX(pad[j])) { */
			else if (SvTYPE(pad[j]) >= SVt_PVAV) {
			    if (!SvPADMY(pad[j])) {
				levelref++;
				do_sv_dump(0, Perl_debug_log, pad[j], 0, 4, 0, 0);
				dumpit = 1;
			    }
			}
			else if (SvTYPE(pad[j]) >= SVt_PV && SvLEN(pad[j])) {
			    levels++;
			    levelm += SvLEN(pad[j])/SvREFCNT(pad[j]);
				/* Dump(pad[j],4); */
			}
		    }
		    PerlIO_printf(Perl_debug_log, "    level %i: refs: %i, strings: %i in %i,\targsarray: %i, argsstrings: %i\n", 
			    i, levelref, levelm, levels, levela, levelas);
		    totm += levelm;
		    tota += levela;
		    totas += levelas;
		    tots += levels;
		    totref += levelref;
		    if (dumpit)
			do_sv_dump(0, Perl_debug_log, (SV*)cv, 0, 2, 0, 0);
		}
		if (AvFILL(padlist) > 1) {
		    PerlIO_printf(Perl_debug_log, "  total: refs: %i, strings: %i in %i,\targsarrays: %i, argsstrings: %i\n", 
			    totref, totm, tots, tota, totas);
		}
		tref += totref;
		tm += totm;
		ts += tots;
		ta += tota;
		tas += totas;
	    }
	}
    }
    PerlIO_printf(Perl_debug_log, "total: refs: %i, strings: %i in %i\targsarray: %i, argsstrings: %i\n", tref, tm, ts, ta, tas);

    return ret;
#endif /* !PURIFY */
}

#if defined(MYMALLOC)
#   define mstat(str) dump_mstats(str)
#else
#   define mstat(str) \
	PerlIO_printf(Perl_debug_log, "%s: perl not compiled with MYMALLOC\n",str);
#endif

#if defined(MYMALLOC)

/* Very coarse overestimate, 2-per-power-of-2, one more to determine NBUCKETS. */
#  define _NBUCKETS (2*8*IVSIZE+1)

struct mstats_buffer 
{
    perl_mstats_t buffer;
    UV buf[_NBUCKETS*4];
};

static void
_fill_mstats(struct mstats_buffer *b, int level)
{
    dTHX;
    b->buffer.nfree  = b->buf;
    b->buffer.ntotal = b->buf + _NBUCKETS;
    b->buffer.bucket_mem_size = b->buf + 2*_NBUCKETS;
    b->buffer.bucket_available_size = b->buf + 3*_NBUCKETS;
    Zero(b->buf, (level ? 4*_NBUCKETS: 2*_NBUCKETS), unsigned long);
    get_mstats(&(b->buffer), _NBUCKETS, level);
}

static void
fill_mstats(SV *sv, int level)
{
    dTHX;

    if (SvIsCOW(sv)) sv_force_normal(sv);
    if (SvREADONLY(sv))
	croak("Cannot modify a readonly value");
    SvGROW(sv, sizeof(struct mstats_buffer)+1);
    _fill_mstats((struct mstats_buffer*)SvPVX(sv),level);
    SvCUR_set(sv, sizeof(struct mstats_buffer));
    *SvEND(sv) = '\0';
    SvPOK_only(sv);
}

static void
_mstats_to_hv(HV *hv, const struct mstats_buffer *b, int level)
{
    dTHX;
    SV **svp;
    int type;

    svp = hv_fetch(hv, "topbucket", 9, 1);
    sv_setiv(*svp, b->buffer.topbucket);

    svp = hv_fetch(hv, "topbucket_ev", 12, 1);
    sv_setiv(*svp, b->buffer.topbucket_ev);

    svp = hv_fetch(hv, "topbucket_odd", 13, 1);
    sv_setiv(*svp, b->buffer.topbucket_odd);

    svp = hv_fetch(hv, "totfree", 7, 1);
    sv_setiv(*svp, b->buffer.totfree);

    svp = hv_fetch(hv, "total", 5, 1);
    sv_setiv(*svp, b->buffer.total);

    svp = hv_fetch(hv, "total_chain", 11, 1);
    sv_setiv(*svp, b->buffer.total_chain);

    svp = hv_fetch(hv, "total_sbrk", 10, 1);
    sv_setiv(*svp, b->buffer.total_sbrk);

    svp = hv_fetch(hv, "sbrks", 5, 1);
    sv_setiv(*svp, b->buffer.sbrks);

    svp = hv_fetch(hv, "sbrk_good", 9, 1);
    sv_setiv(*svp, b->buffer.sbrk_good);

    svp = hv_fetch(hv, "sbrk_slack", 10, 1);
    sv_setiv(*svp, b->buffer.sbrk_slack);

    svp = hv_fetch(hv, "start_slack", 11, 1);
    sv_setiv(*svp, b->buffer.start_slack);

    svp = hv_fetch(hv, "sbrked_remains", 14, 1);
    sv_setiv(*svp, b->buffer.sbrked_remains);
    
    svp = hv_fetch(hv, "minbucket", 9, 1);
    sv_setiv(*svp, b->buffer.minbucket);
    
    svp = hv_fetch(hv, "nbuckets", 8, 1);
    sv_setiv(*svp, b->buffer.nbuckets);

    if (_NBUCKETS < b->buffer.nbuckets) 
	warn("FIXME: internal mstats buffer too short");
    
    for (type = 0; type < (level ? 4 : 2); type++) {
	UV *p = 0, *p1 = 0, i;
	AV *av;
	static const char *types[4] = { 
	    "free", "used", "mem_size", "available_size"    
	};

	svp = hv_fetch(hv, types[type], strlen(types[type]), 1);

	if (SvOK(*svp) && !(SvROK(*svp) && SvTYPE(SvRV(*svp)) == SVt_PVAV))
	    croak("Unexpected value for the key '%s' in the mstats hash", types[type]);
	if (!SvOK(*svp)) {
	    av = newAV();
	    (void)SvUPGRADE(*svp, SVt_RV);
	    SvRV_set(*svp, (SV*)av);
	    SvROK_on(*svp);
	} else
	    av = (AV*)SvRV(*svp);

	av_extend(av, b->buffer.nbuckets - 1);
	/* XXXX What is the official way to reduce the size of the array? */
	switch (type) {
	case 0:
	    p = b->buffer.nfree;
	    break;
	case 1:
	    p = b->buffer.ntotal;
	    p1 = b->buffer.nfree;
	    break;
	case 2:
	    p = b->buffer.bucket_mem_size;
	    break;
	case 3:
	    p = b->buffer.bucket_available_size;
	    break;
	}
	for (i = 0; i < b->buffer.nbuckets; i++) {
	    svp = av_fetch(av, i, 1);
	    if (type == 1)
		sv_setiv(*svp, p[i]-p1[i]);
	    else
		sv_setuv(*svp, p[i]);
	}
    }
}

static void
mstats_fillhash(SV *sv, int level)
{
    struct mstats_buffer buf;

    if (!(SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVHV))
	croak("Not a hash reference");
    _fill_mstats(&buf, level);
    _mstats_to_hv((HV *)SvRV(sv), &buf, level);
}

static void
mstats2hash(SV *sv, SV *rv, int level)
{
    if (!(SvROK(rv) && SvTYPE(SvRV(rv)) == SVt_PVHV))
	croak("Not a hash reference");
    if (!SvPOK(sv))
	croak("Undefined value when expecting mstats buffer");
    if (SvCUR(sv) != sizeof(struct mstats_buffer))
	croak("Wrong size for a value with a mstats buffer");
    _mstats_to_hv((HV *)SvRV(rv), (struct mstats_buffer*)SvPVX(sv), level);
}
#else	/* defined(MYMALLOC) */ 
static void
fill_mstats(SV *sv, int level)
{
    PERL_UNUSED_ARG(sv);
    PERL_UNUSED_ARG(level);
    croak("Cannot report mstats without Perl malloc");
}

static void
mstats_fillhash(SV *sv, int level)
{
    PERL_UNUSED_ARG(sv);
    PERL_UNUSED_ARG(level);
    croak("Cannot report mstats without Perl malloc");
}

static void
mstats2hash(SV *sv, SV *rv, int level)
{
    PERL_UNUSED_ARG(sv);
    PERL_UNUSED_ARG(rv);
    PERL_UNUSED_ARG(level);
    croak("Cannot report mstats without Perl malloc");
}
#endif	/* defined(MYMALLOC) */ 

#define _CvGV(cv)					\
	(SvROK(cv) && (SvTYPE(SvRV(cv))==SVt_PVCV)	\
	 ? SvREFCNT_inc(CvGV((CV*)SvRV(cv))) : &PL_sv_undef)

MODULE = Devel::Peek		PACKAGE = Devel::Peek

void
mstat(str="Devel::Peek::mstat: ")
const char *str

void
fill_mstats(SV *sv, int level = 0)

void
mstats_fillhash(SV *sv, int level = 0)
    PROTOTYPE: \%;$

void
mstats2hash(SV *sv, SV *rv, int level = 0)
    PROTOTYPE: $\%;$

void
Dump(sv,lim=4)
SV *	sv
I32	lim
PPCODE:
{
    SV *pv_lim_sv = perl_get_sv("Devel::Peek::pv_limit", 0);
    const STRLEN pv_lim = pv_lim_sv ? SvIV(pv_lim_sv) : 0;
    SV *dumpop = perl_get_sv("Devel::Peek::dump_ops", 0);
    const U16 save_dumpindent = PL_dumpindent;
    PL_dumpindent = 2;
    do_sv_dump(0, Perl_debug_log, sv, 0, lim,
	       (bool)(dumpop && SvTRUE(dumpop)), pv_lim);
    PL_dumpindent = save_dumpindent;
}

void
DumpArray(lim,...)
I32	lim
PPCODE:
{
    long i;
    SV *pv_lim_sv = perl_get_sv("Devel::Peek::pv_limit", 0);
    const STRLEN pv_lim = pv_lim_sv ? SvIV(pv_lim_sv) : 0;
    SV *dumpop = perl_get_sv("Devel::Peek::dump_ops", 0);
    const U16 save_dumpindent = PL_dumpindent;
    PL_dumpindent = 2;

    for (i=1; i<items; i++) {
	PerlIO_printf(Perl_debug_log, "Elt No. %ld  0x%"UVxf"\n", i - 1, PTR2UV(ST(i)));
	do_sv_dump(0, Perl_debug_log, ST(i), 0, lim,
		   (bool)(dumpop && SvTRUE(dumpop)), pv_lim);
    }
    PL_dumpindent = save_dumpindent;
}

void
DumpProg()
PPCODE:
{
    warn("dumpindent is %d", (int)PL_dumpindent);
    if (PL_main_root)
	op_dump(PL_main_root);
}

I32
SvREFCNT(sv)
SV *	sv

# PPCODE needed since otherwise sv_2mortal is inserted that will kill the value.

SV *
SvREFCNT_inc(sv)
SV *	sv
PPCODE:
{
    RETVAL = SvREFCNT_inc(sv);
    PUSHs(RETVAL);
}

# PPCODE needed since by default it is void

void
SvREFCNT_dec(sv)
SV *	sv
PPCODE:
{
    SvREFCNT_dec(sv);
    PUSHs(sv);
}

SV *
DeadCode()
CODE:
    RETVAL = DeadCode(aTHX);
OUTPUT:
    RETVAL

MODULE = Devel::Peek		PACKAGE = Devel::Peek	PREFIX = _

SV *
_CvGV(cv)
    SV *cv

bool
_runops_debug(int flag = -1)
Commit	Line	Data
c5be433b	1	#define PERL_NO_GET_CONTEXT
3967c732 JD	2	#include "EXTERN.h"
	3	#include "perl.h"
	4	#include "XSUB.h"
	5
f681a178	6	static bool
bd16a5f0 IZ	7	_runops_debug(int flag)
	8	{
	9	dTHX;
ef69c8fc	10	const bool d = PL_runops == Perl_runops_debug;
bd16a5f0 IZ	11
bd16a5f0 IZ	12	if (flag >= 0)
ef69c8fc	13	PL_runops = flag ? Perl_runops_debug : Perl_runops_standard;
bd16a5f0 IZ	14	return d;
	15	}
	16
f681a178	17	static SV *
cea2e8a9	18	DeadCode(pTHX)
3967c732	19	{
8ecf7187 GS	20	#ifdef PURIFY
	21	return Nullsv;
	22	#else
3967c732	23	SV* sva;
9c5ffd7c	24	SV* sv;
3967c732 JD	25	SV* ret = newRV_noinc((SV*)newAV());
	26	register SV* svend;
	27	int tm = 0, tref = 0, ts = 0, ta = 0, tas = 0;
	28
	29	for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
	30	svend = &sva[SvREFCNT(sva)];
	31	for (sv = sva + 1; sv < svend; ++sv) {
	32	if (SvTYPE(sv) == SVt_PVCV) {
	33	CV cv = (CV)sv;
	34	AV* padlist = CvPADLIST(cv), *argav;
	35	SV** svp;
	36	SV** pad;
	37	int i = 0, j, levelm, totm = 0, levelref, totref = 0;
	38	int levels, tots = 0, levela, tota = 0, levelas, totas = 0;
	39	int dumpit = 0;
	40
aed2304a	41	if (CvISXSUB(sv)) {
3967c732 JD	42	continue; /* XSUB */
	43	}
	44	if (!CvGV(sv)) {
	45	continue; /* file-level scope. */
	46	}
	47	if (!CvROOT(cv)) {
bf49b057	48	/* PerlIO_printf(Perl_debug_log, " no root?!\n"); */
3967c732 JD	49	continue; /* autoloading stub. */
3967c732 JD	50	}
bf49b057	51	do_gvgv_dump(0, Perl_debug_log, "GVGV::GV", CvGV(sv));
3967c732	52	if (CvDEPTH(cv)) {
bf49b057	53	PerlIO_printf(Perl_debug_log, " busy\n");
3967c732 JD	54	continue;
	55	}
	56	svp = AvARRAY(padlist);
	57	while (++i <= AvFILL(padlist)) { /* Depth. */
	58	SV **args;
	59
	60	pad = AvARRAY((AV*)svp[i]);
	61	argav = (AV*)pad[0];
	62	if (!argav \|\| (SV*)argav == &PL_sv_undef) {
bf49b057	63	PerlIO_printf(Perl_debug_log, " closure-template\n");
3967c732 JD	64	continue;
	65	}
	66	args = AvARRAY(argav);
	67	levelm = levels = levelref = levelas = 0;
	68	levela = sizeof(SV) (AvMAX(argav) + 1);
	69	if (AvREAL(argav)) {
	70	for (j = 0; j < AvFILL(argav); j++) {
	71	if (SvROK(args[j])) {
bf49b057	72	PerlIO_printf(Perl_debug_log, " ref in args!\n");
3967c732 JD	73	levelref++;
	74	}
	75	/* else if (SvPOK(args[j]) && SvPVX(args[j])) { */
	76	else if (SvTYPE(args[j]) >= SVt_PV && SvLEN(args[j])) {
	77	levelas += SvLEN(args[j])/SvREFCNT(args[j]);
	78	}
	79	}
	80	}
	81	for (j = 1; j < AvFILL((AV)svp[1]); j++) { / Vars. */
	82	if (SvROK(pad[j])) {
	83	levelref++;
bf49b057	84	do_sv_dump(0, Perl_debug_log, pad[j], 0, 4, 0, 0);
3967c732 JD	85	dumpit = 1;
	86	}
	87	/* else if (SvPOK(pad[j]) && SvPVX(pad[j])) { */
	88	else if (SvTYPE(pad[j]) >= SVt_PVAV) {
	89	if (!SvPADMY(pad[j])) {
	90	levelref++;
bf49b057	91	do_sv_dump(0, Perl_debug_log, pad[j], 0, 4, 0, 0);
3967c732 JD	92	dumpit = 1;
	93	}
	94	}
	95	else if (SvTYPE(pad[j]) >= SVt_PV && SvLEN(pad[j])) {
3967c732 JD	96	levels++;
	97	levelm += SvLEN(pad[j])/SvREFCNT(pad[j]);
	98	/* Dump(pad[j],4); */
	99	}
	100	}
bf49b057	101	PerlIO_printf(Perl_debug_log, " level %i: refs: %i, strings: %i in %i,\targsarray: %i, argsstrings: %i\n",
3967c732 JD	102	i, levelref, levelm, levels, levela, levelas);
	103	totm += levelm;
	104	tota += levela;
	105	totas += levelas;
	106	tots += levels;
	107	totref += levelref;
	108	if (dumpit)
bf49b057	109	do_sv_dump(0, Perl_debug_log, (SV*)cv, 0, 2, 0, 0);
3967c732 JD	110	}
3967c732 JD	111	if (AvFILL(padlist) > 1) {
bf49b057	112	PerlIO_printf(Perl_debug_log, " total: refs: %i, strings: %i in %i,\targsarrays: %i, argsstrings: %i\n",
3967c732 JD	113	totref, totm, tots, tota, totas);
	114	}
	115	tref += totref;
	116	tm += totm;
	117	ts += tots;
	118	ta += tota;
	119	tas += totas;
	120	}
	121	}
	122	}
bf49b057	123	PerlIO_printf(Perl_debug_log, "total: refs: %i, strings: %i in %i\targsarray: %i, argsstrings: %i\n", tref, tm, ts, ta, tas);
3967c732 JD	124
3967c732 JD	125	return ret;
3967c732	126	#endif /* !PURIFY */
8ecf7187	127	}
3967c732	128
3128eefe	129	#if defined(MYMALLOC)
3967c732 JD	130	# define mstat(str) dump_mstats(str)
	131	#else
	132	# define mstat(str) \
3128eefe	133	PerlIO_printf(Perl_debug_log, "%s: perl not compiled with MYMALLOC\n",str);
3967c732 JD	134	#endif
3967c732 JD	135
3128eefe	136	#if defined(MYMALLOC)
d1424c31 IZ	137
	138	/* Very coarse overestimate, 2-per-power-of-2, one more to determine NBUCKETS. */
	139	# define _NBUCKETS (28IVSIZE+1)
	140
	141	struct mstats_buffer
	142	{
	143	perl_mstats_t buffer;
	144	UV buf[_NBUCKETS*4];
	145	};
	146
f681a178	147	static void
d1424c31 IZ	148	_fill_mstats(struct mstats_buffer *b, int level)
d1424c31 IZ	149	{
c024d977	150	dTHX;
d1424c31 IZ	151	b->buffer.nfree = b->buf;
	152	b->buffer.ntotal = b->buf + _NBUCKETS;
	153	b->buffer.bucket_mem_size = b->buf + 2*_NBUCKETS;
	154	b->buffer.bucket_available_size = b->buf + 3*_NBUCKETS;
	155	Zero(b->buf, (level ? 4_NBUCKETS: 2_NBUCKETS), unsigned long);
	156	get_mstats(&(b->buffer), _NBUCKETS, level);
	157	}
	158
f681a178	159	static void
d1424c31 IZ	160	fill_mstats(SV *sv, int level)
d1424c31 IZ	161	{
c024d977	162	dTHX;
d1424c31	163
4ab5bd5f	164	if (SvIsCOW(sv)) sv_force_normal(sv);
d1424c31 IZ	165	if (SvREADONLY(sv))
	166	croak("Cannot modify a readonly value");
	167	SvGROW(sv, sizeof(struct mstats_buffer)+1);
	168	_fill_mstats((struct mstats_buffer*)SvPVX(sv),level);
	169	SvCUR_set(sv, sizeof(struct mstats_buffer));
	170	*SvEND(sv) = '\0';
	171	SvPOK_only(sv);
	172	}
	173
f681a178	174	static void
7698c435	175	_mstats_to_hv(HV hv, const struct mstats_buffer b, int level)
d1424c31	176	{
c024d977	177	dTHX;
d1424c31 IZ	178	SV **svp;
	179	int type;
	180
	181	svp = hv_fetch(hv, "topbucket", 9, 1);
	182	sv_setiv(*svp, b->buffer.topbucket);
	183
	184	svp = hv_fetch(hv, "topbucket_ev", 12, 1);
	185	sv_setiv(*svp, b->buffer.topbucket_ev);
	186
	187	svp = hv_fetch(hv, "topbucket_odd", 13, 1);
	188	sv_setiv(*svp, b->buffer.topbucket_odd);
	189
	190	svp = hv_fetch(hv, "totfree", 7, 1);
	191	sv_setiv(*svp, b->buffer.totfree);
	192
	193	svp = hv_fetch(hv, "total", 5, 1);
	194	sv_setiv(*svp, b->buffer.total);
	195
	196	svp = hv_fetch(hv, "total_chain", 11, 1);
	197	sv_setiv(*svp, b->buffer.total_chain);
	198
	199	svp = hv_fetch(hv, "total_sbrk", 10, 1);
	200	sv_setiv(*svp, b->buffer.total_sbrk);
	201
	202	svp = hv_fetch(hv, "sbrks", 5, 1);
	203	sv_setiv(*svp, b->buffer.sbrks);
	204
	205	svp = hv_fetch(hv, "sbrk_good", 9, 1);
	206	sv_setiv(*svp, b->buffer.sbrk_good);
	207
	208	svp = hv_fetch(hv, "sbrk_slack", 10, 1);
	209	sv_setiv(*svp, b->buffer.sbrk_slack);
	210
	211	svp = hv_fetch(hv, "start_slack", 11, 1);
	212	sv_setiv(*svp, b->buffer.start_slack);
	213
	214	svp = hv_fetch(hv, "sbrked_remains", 14, 1);
	215	sv_setiv(*svp, b->buffer.sbrked_remains);
	216
	217	svp = hv_fetch(hv, "minbucket", 9, 1);
	218	sv_setiv(*svp, b->buffer.minbucket);
	219
	220	svp = hv_fetch(hv, "nbuckets", 8, 1);
	221	sv_setiv(*svp, b->buffer.nbuckets);
	222
	223	if (_NBUCKETS < b->buffer.nbuckets)
	224	warn("FIXME: internal mstats buffer too short");
	225
	226	for (type = 0; type < (level ? 4 : 2); type++) {
f0f74ded	227	UV p = 0, p1 = 0, i;
d1424c31	228	AV *av;
d1424c31 IZ	229	static const char *types[4] = {
	230	"free", "used", "mem_size", "available_size"
	231	};
	232
	233	svp = hv_fetch(hv, types[type], strlen(types[type]), 1);
	234
	235	if (SvOK(svp) && !(SvROK(svp) && SvTYPE(SvRV(*svp)) == SVt_PVAV))
	236	croak("Unexpected value for the key '%s' in the mstats hash", types[type]);
	237	if (!SvOK(*svp)) {
	238	av = newAV();
d05c1ba0	239	(void)SvUPGRADE(*svp, SVt_RV);
b162af07	240	SvRV_set(svp, (SV)av);
d1424c31 IZ	241	SvROK_on(*svp);
	242	} else
	243	av = (AV)SvRV(svp);
	244
	245	av_extend(av, b->buffer.nbuckets - 1);
	246	/* XXXX What is the official way to reduce the size of the array? */
	247	switch (type) {
	248	case 0:
	249	p = b->buffer.nfree;
	250	break;
	251	case 1:
	252	p = b->buffer.ntotal;
	253	p1 = b->buffer.nfree;
	254	break;
	255	case 2:
	256	p = b->buffer.bucket_mem_size;
	257	break;
	258	case 3:
	259	p = b->buffer.bucket_available_size;
	260	break;
	261	}
	262	for (i = 0; i < b->buffer.nbuckets; i++) {
	263	svp = av_fetch(av, i, 1);
	264	if (type == 1)
	265	sv_setiv(*svp, p[i]-p1[i]);
	266	else
	267	sv_setuv(*svp, p[i]);
	268	}
	269	}
	270	}
f681a178 AT	271
f681a178 AT	272	static void
d1424c31 IZ	273	mstats_fillhash(SV *sv, int level)
	274	{
	275	struct mstats_buffer buf;
	276
	277	if (!(SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVHV))
	278	croak("Not a hash reference");
	279	_fill_mstats(&buf, level);
	280	_mstats_to_hv((HV *)SvRV(sv), &buf, level);
	281	}
f681a178 AT	282
f681a178 AT	283	static void
d1424c31 IZ	284	mstats2hash(SV sv, SV rv, int level)
	285	{
	286	if (!(SvROK(rv) && SvTYPE(SvRV(rv)) == SVt_PVHV))
	287	croak("Not a hash reference");
	288	if (!SvPOK(sv))
	289	croak("Undefined value when expecting mstats buffer");
	290	if (SvCUR(sv) != sizeof(struct mstats_buffer))
	291	croak("Wrong size for a value with a mstats buffer");
	292	_mstats_to_hv((HV )SvRV(rv), (struct mstats_buffer)SvPVX(sv), level);
	293	}
3128eefe	294	#else /* defined(MYMALLOC) */
f681a178	295	static void
d1424c31 IZ	296	fill_mstats(SV *sv, int level)
d1424c31 IZ	297	{
c33e8be1 Z	298	PERL_UNUSED_ARG(sv);
c33e8be1 Z	299	PERL_UNUSED_ARG(level);
d1424c31 IZ	300	croak("Cannot report mstats without Perl malloc");
d1424c31 IZ	301	}
f681a178 AT	302
f681a178 AT	303	static void
d1424c31 IZ	304	mstats_fillhash(SV *sv, int level)
d1424c31 IZ	305	{
c33e8be1 Z	306	PERL_UNUSED_ARG(sv);
c33e8be1 Z	307	PERL_UNUSED_ARG(level);
d1424c31 IZ	308	croak("Cannot report mstats without Perl malloc");
d1424c31 IZ	309	}
f681a178 AT	310
f681a178 AT	311	static void
d1424c31 IZ	312	mstats2hash(SV sv, SV rv, int level)
d1424c31 IZ	313	{
c33e8be1 Z	314	PERL_UNUSED_ARG(sv);
	315	PERL_UNUSED_ARG(rv);
	316	PERL_UNUSED_ARG(level);
d1424c31 IZ	317	croak("Cannot report mstats without Perl malloc");
d1424c31 IZ	318	}
3128eefe	319	#endif /* defined(MYMALLOC) */
d1424c31	320
83ee9e09 GS	321	#define _CvGV(cv) \
83ee9e09 GS	322	(SvROK(cv) && (SvTYPE(SvRV(cv))==SVt_PVCV) \
15bcf759	323	? SvREFCNT_inc(CvGV((CV*)SvRV(cv))) : &PL_sv_undef)
83ee9e09	324
3967c732 JD	325	MODULE = Devel::Peek PACKAGE = Devel::Peek
	326
	327	void
	328	mstat(str="Devel::Peek::mstat: ")
d3f5e399	329	const char *str
3967c732 JD	330
3967c732 JD	331	void
d1424c31 IZ	332	fill_mstats(SV *sv, int level = 0)
	333
	334	void
	335	mstats_fillhash(SV *sv, int level = 0)
	336	PROTOTYPE: \%;$
	337
	338	void
	339	mstats2hash(SV sv, SV rv, int level = 0)
	340	PROTOTYPE: $\%;$
	341
	342	void
3967c732 JD	343	Dump(sv,lim=4)
	344	SV * sv
	345	I32 lim
	346	PPCODE:
	347	{
64ace3f8	348	SV *pv_lim_sv = perl_get_sv("Devel::Peek::pv_limit", 0);
7698c435	349	const STRLEN pv_lim = pv_lim_sv ? SvIV(pv_lim_sv) : 0;
64ace3f8	350	SV *dumpop = perl_get_sv("Devel::Peek::dump_ops", 0);
16d8f38a	351	const U16 save_dumpindent = PL_dumpindent;
3967c732	352	PL_dumpindent = 2;
eb160463 GS	353	do_sv_dump(0, Perl_debug_log, sv, 0, lim,
eb160463 GS	354	(bool)(dumpop && SvTRUE(dumpop)), pv_lim);
16d8f38a	355	PL_dumpindent = save_dumpindent;
3967c732 JD	356	}
	357
	358	void
	359	DumpArray(lim,...)
	360	I32 lim
	361	PPCODE:
	362	{
	363	long i;
64ace3f8	364	SV *pv_lim_sv = perl_get_sv("Devel::Peek::pv_limit", 0);
7698c435	365	const STRLEN pv_lim = pv_lim_sv ? SvIV(pv_lim_sv) : 0;
64ace3f8	366	SV *dumpop = perl_get_sv("Devel::Peek::dump_ops", 0);
16d8f38a	367	const U16 save_dumpindent = PL_dumpindent;
3967c732 JD	368	PL_dumpindent = 2;
	369
	370	for (i=1; i<items; i++) {
7b0972df	371	PerlIO_printf(Perl_debug_log, "Elt No. %ld 0x%"UVxf"\n", i - 1, PTR2UV(ST(i)));
eb160463 GS	372	do_sv_dump(0, Perl_debug_log, ST(i), 0, lim,
eb160463 GS	373	(bool)(dumpop && SvTRUE(dumpop)), pv_lim);
3967c732	374	}
16d8f38a	375	PL_dumpindent = save_dumpindent;
3967c732 JD	376	}
	377
	378	void
	379	DumpProg()
	380	PPCODE:
	381	{
d2560b70	382	warn("dumpindent is %d", (int)PL_dumpindent);
3967c732 JD	383	if (PL_main_root)
	384	op_dump(PL_main_root);
	385	}
	386
	387	I32
	388	SvREFCNT(sv)
	389	SV * sv
	390
	391	# PPCODE needed since otherwise sv_2mortal is inserted that will kill the value.
	392
	393	SV *
	394	SvREFCNT_inc(sv)
	395	SV * sv
	396	PPCODE:
	397	{
	398	RETVAL = SvREFCNT_inc(sv);
	399	PUSHs(RETVAL);
	400	}
	401
	402	# PPCODE needed since by default it is void
	403
8063af02	404	void
3967c732 JD	405	SvREFCNT_dec(sv)
	406	SV * sv
	407	PPCODE:
	408	{
	409	SvREFCNT_dec(sv);
	410	PUSHs(sv);
	411	}
	412
	413	SV *
	414	DeadCode()
cea2e8a9 GS	415	CODE:
	416	RETVAL = DeadCode(aTHX);
	417	OUTPUT:
	418	RETVAL
83ee9e09 GS	419
	420	MODULE = Devel::Peek PACKAGE = Devel::Peek PREFIX = _
	421
	422	SV *
	423	_CvGV(cv)
	424	SV *cv
bd16a5f0 IZ	425
	426	bool
	427	_runops_debug(int flag = -1)