[p5sagit/p5-mst-13.2.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 == MEMBER_TO_FPTR(Perl_runops_debug);

    if (flag >= 0)
	PL_runops 
	    = MEMBER_TO_FPTR(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(PERL_DEBUGGING_MSTATS) || defined(DEBUGGING_MSTATS)) \
	&& (defined(MYMALLOC) && !defined(PLAIN_MALLOC))
#   define mstat(str) dump_mstats(str)
#else
#   define mstat(str) \
	PerlIO_printf(Perl_debug_log, "%s: perl not compiled with DEBUGGING_MSTATS\n",str);
#endif

#if (defined(PERL_DEBUGGING_MSTATS) || defined(DEBUGGING_MSTATS)) \
	&& (defined(MYMALLOC) && !defined(PLAIN_MALLOC))

/* 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 (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;
	AV *av;
	int i;
	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(PERL_DEBUGGING_MSTATS) || defined(DEBUGGING_MSTATS) \ ) */ 
static void
fill_mstats(SV *sv, int level)
{
    croak("Cannot report mstats without Perl malloc");
}

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

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

#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: ")
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", FALSE);
    const STRLEN pv_lim = pv_lim_sv ? SvIV(pv_lim_sv) : 0;
    SV *dumpop = perl_get_sv("Devel::Peek::dump_ops", FALSE);
    const I32 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", FALSE);
    const STRLEN pv_lim = pv_lim_sv ? SvIV(pv_lim_sv) : 0;
    SV *dumpop = perl_get_sv("Devel::Peek::dump_ops", FALSE);
    const I32 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	2	#include "EXTERN.h"
	3	#include "perl.h"
	4	#include "XSUB.h"
	5
f681a178	6	static bool
bd16a5f0	7	_runops_debug(int flag)
	8	{
	9	dTHX;
7698c435	10	const bool d = PL_runops == MEMBER_TO_FPTR(Perl_runops_debug);
bd16a5f0	11
	12	if (flag >= 0)
	13	PL_runops
	14	= MEMBER_TO_FPTR(flag ? Perl_runops_debug : Perl_runops_standard);
	15	return d;
	16	}
	17
f681a178	18	static SV *
cea2e8a9	19	DeadCode(pTHX)
3967c732	20	{
8ecf7187	21	#ifdef PURIFY
	22	return Nullsv;
	23	#else
3967c732	24	SV* sva;
9c5ffd7c	25	SV* sv;
3967c732	26	SV* ret = newRV_noinc((SV*)newAV());
	27	register SV* svend;
	28	int tm = 0, tref = 0, ts = 0, ta = 0, tas = 0;
	29
	30	for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
	31	svend = &sva[SvREFCNT(sva)];
	32	for (sv = sva + 1; sv < svend; ++sv) {
	33	if (SvTYPE(sv) == SVt_PVCV) {
	34	CV cv = (CV)sv;
	35	AV* padlist = CvPADLIST(cv), *argav;
	36	SV** svp;
	37	SV** pad;
	38	int i = 0, j, levelm, totm = 0, levelref, totref = 0;
	39	int levels, tots = 0, levela, tota = 0, levelas, totas = 0;
	40	int dumpit = 0;
	41
aed2304a	42	if (CvISXSUB(sv)) {
3967c732	43	continue; /* XSUB */
	44	}
	45	if (!CvGV(sv)) {
	46	continue; /* file-level scope. */
	47	}
	48	if (!CvROOT(cv)) {
bf49b057	49	/* PerlIO_printf(Perl_debug_log, " no root?!\n"); */
3967c732	50	continue; /* autoloading stub. */
3967c732	51	}
bf49b057	52	do_gvgv_dump(0, Perl_debug_log, "GVGV::GV", CvGV(sv));
3967c732	53	if (CvDEPTH(cv)) {
bf49b057	54	PerlIO_printf(Perl_debug_log, " busy\n");
3967c732	55	continue;
	56	}
	57	svp = AvARRAY(padlist);
	58	while (++i <= AvFILL(padlist)) { /* Depth. */
	59	SV **args;
	60
	61	pad = AvARRAY((AV*)svp[i]);
	62	argav = (AV*)pad[0];
	63	if (!argav \|\| (SV*)argav == &PL_sv_undef) {
bf49b057	64	PerlIO_printf(Perl_debug_log, " closure-template\n");
3967c732	65	continue;
	66	}
	67	args = AvARRAY(argav);
	68	levelm = levels = levelref = levelas = 0;
	69	levela = sizeof(SV) (AvMAX(argav) + 1);
	70	if (AvREAL(argav)) {
	71	for (j = 0; j < AvFILL(argav); j++) {
	72	if (SvROK(args[j])) {
bf49b057	73	PerlIO_printf(Perl_debug_log, " ref in args!\n");
3967c732	74	levelref++;
	75	}
	76	/* else if (SvPOK(args[j]) && SvPVX(args[j])) { */
	77	else if (SvTYPE(args[j]) >= SVt_PV && SvLEN(args[j])) {
	78	levelas += SvLEN(args[j])/SvREFCNT(args[j]);
	79	}
	80	}
	81	}
	82	for (j = 1; j < AvFILL((AV)svp[1]); j++) { / Vars. */
	83	if (SvROK(pad[j])) {
	84	levelref++;
bf49b057	85	do_sv_dump(0, Perl_debug_log, pad[j], 0, 4, 0, 0);
3967c732	86	dumpit = 1;
	87	}
	88	/* else if (SvPOK(pad[j]) && SvPVX(pad[j])) { */
	89	else if (SvTYPE(pad[j]) >= SVt_PVAV) {
	90	if (!SvPADMY(pad[j])) {
	91	levelref++;
bf49b057	92	do_sv_dump(0, Perl_debug_log, pad[j], 0, 4, 0, 0);
3967c732	93	dumpit = 1;
	94	}
	95	}
	96	else if (SvTYPE(pad[j]) >= SVt_PV && SvLEN(pad[j])) {
3967c732	97	levels++;
	98	levelm += SvLEN(pad[j])/SvREFCNT(pad[j]);
	99	/* Dump(pad[j],4); */
	100	}
	101	}
bf49b057	102	PerlIO_printf(Perl_debug_log, " level %i: refs: %i, strings: %i in %i,\targsarray: %i, argsstrings: %i\n",
3967c732	103	i, levelref, levelm, levels, levela, levelas);
	104	totm += levelm;
	105	tota += levela;
	106	totas += levelas;
	107	tots += levels;
	108	totref += levelref;
	109	if (dumpit)
bf49b057	110	do_sv_dump(0, Perl_debug_log, (SV*)cv, 0, 2, 0, 0);
3967c732	111	}
3967c732	112	if (AvFILL(padlist) > 1) {
bf49b057	113	PerlIO_printf(Perl_debug_log, " total: refs: %i, strings: %i in %i,\targsarrays: %i, argsstrings: %i\n",
3967c732	114	totref, totm, tots, tota, totas);
	115	}
	116	tref += totref;
	117	tm += totm;
	118	ts += tots;
	119	ta += tota;
	120	tas += totas;
	121	}
	122	}
	123	}
bf49b057	124	PerlIO_printf(Perl_debug_log, "total: refs: %i, strings: %i in %i\targsarray: %i, argsstrings: %i\n", tref, tm, ts, ta, tas);
3967c732	125
3967c732	126	return ret;
3967c732	127	#endif /* !PURIFY */
8ecf7187	128	}
3967c732	129
7e84e004	130	#if (defined(PERL_DEBUGGING_MSTATS) \|\| defined(DEBUGGING_MSTATS)) \
7e84e004	131	&& (defined(MYMALLOC) && !defined(PLAIN_MALLOC))
3967c732	132	# define mstat(str) dump_mstats(str)
	133	#else
	134	# define mstat(str) \
bf49b057	135	PerlIO_printf(Perl_debug_log, "%s: perl not compiled with DEBUGGING_MSTATS\n",str);
3967c732	136	#endif
3967c732	137
7e84e004	138	#if (defined(PERL_DEBUGGING_MSTATS) \|\| defined(DEBUGGING_MSTATS)) \
7e84e004	139	&& (defined(MYMALLOC) && !defined(PLAIN_MALLOC))
d1424c31	140
	141	/* Very coarse overestimate, 2-per-power-of-2, one more to determine NBUCKETS. */
	142	# define _NBUCKETS (28IVSIZE+1)
	143
	144	struct mstats_buffer
	145	{
	146	perl_mstats_t buffer;
	147	UV buf[_NBUCKETS*4];
	148	};
	149
f681a178	150	static void
d1424c31	151	_fill_mstats(struct mstats_buffer *b, int level)
d1424c31	152	{
c024d977	153	dTHX;
d1424c31	154	b->buffer.nfree = b->buf;
	155	b->buffer.ntotal = b->buf + _NBUCKETS;
	156	b->buffer.bucket_mem_size = b->buf + 2*_NBUCKETS;
	157	b->buffer.bucket_available_size = b->buf + 3*_NBUCKETS;
	158	Zero(b->buf, (level ? 4_NBUCKETS: 2_NBUCKETS), unsigned long);
	159	get_mstats(&(b->buffer), _NBUCKETS, level);
	160	}
	161
f681a178	162	static void
d1424c31	163	fill_mstats(SV *sv, int level)
d1424c31	164	{
c024d977	165	dTHX;
d1424c31	166
	167	if (SvREADONLY(sv))
	168	croak("Cannot modify a readonly value");
	169	SvGROW(sv, sizeof(struct mstats_buffer)+1);
	170	_fill_mstats((struct mstats_buffer*)SvPVX(sv),level);
	171	SvCUR_set(sv, sizeof(struct mstats_buffer));
	172	*SvEND(sv) = '\0';
	173	SvPOK_only(sv);
	174	}
	175
f681a178	176	static void
7698c435	177	_mstats_to_hv(HV hv, const struct mstats_buffer b, int level)
d1424c31	178	{
c024d977	179	dTHX;
d1424c31	180	SV **svp;
	181	int type;
	182
	183	svp = hv_fetch(hv, "topbucket", 9, 1);
	184	sv_setiv(*svp, b->buffer.topbucket);
	185
	186	svp = hv_fetch(hv, "topbucket_ev", 12, 1);
	187	sv_setiv(*svp, b->buffer.topbucket_ev);
	188
	189	svp = hv_fetch(hv, "topbucket_odd", 13, 1);
	190	sv_setiv(*svp, b->buffer.topbucket_odd);
	191
	192	svp = hv_fetch(hv, "totfree", 7, 1);
	193	sv_setiv(*svp, b->buffer.totfree);
	194
	195	svp = hv_fetch(hv, "total", 5, 1);
	196	sv_setiv(*svp, b->buffer.total);
	197
	198	svp = hv_fetch(hv, "total_chain", 11, 1);
	199	sv_setiv(*svp, b->buffer.total_chain);
	200
	201	svp = hv_fetch(hv, "total_sbrk", 10, 1);
	202	sv_setiv(*svp, b->buffer.total_sbrk);
	203
	204	svp = hv_fetch(hv, "sbrks", 5, 1);
	205	sv_setiv(*svp, b->buffer.sbrks);
	206
	207	svp = hv_fetch(hv, "sbrk_good", 9, 1);
	208	sv_setiv(*svp, b->buffer.sbrk_good);
	209
	210	svp = hv_fetch(hv, "sbrk_slack", 10, 1);
	211	sv_setiv(*svp, b->buffer.sbrk_slack);
	212
	213	svp = hv_fetch(hv, "start_slack", 11, 1);
	214	sv_setiv(*svp, b->buffer.start_slack);
	215
	216	svp = hv_fetch(hv, "sbrked_remains", 14, 1);
	217	sv_setiv(*svp, b->buffer.sbrked_remains);
	218
	219	svp = hv_fetch(hv, "minbucket", 9, 1);
	220	sv_setiv(*svp, b->buffer.minbucket);
	221
	222	svp = hv_fetch(hv, "nbuckets", 8, 1);
	223	sv_setiv(*svp, b->buffer.nbuckets);
	224
	225	if (_NBUCKETS < b->buffer.nbuckets)
	226	warn("FIXME: internal mstats buffer too short");
	227
	228	for (type = 0; type < (level ? 4 : 2); type++) {
d05c1ba0	229	UV p = 0, p1 = 0;
d1424c31	230	AV *av;
	231	int i;
	232	static const char *types[4] = {
	233	"free", "used", "mem_size", "available_size"
	234	};
	235
	236	svp = hv_fetch(hv, types[type], strlen(types[type]), 1);
	237
	238	if (SvOK(svp) && !(SvROK(svp) && SvTYPE(SvRV(*svp)) == SVt_PVAV))
	239	croak("Unexpected value for the key '%s' in the mstats hash", types[type]);
	240	if (!SvOK(*svp)) {
	241	av = newAV();
d05c1ba0	242	(void)SvUPGRADE(*svp, SVt_RV);
b162af07	243	SvRV_set(svp, (SV)av);
d1424c31	244	SvROK_on(*svp);
	245	} else
	246	av = (AV)SvRV(svp);
	247
	248	av_extend(av, b->buffer.nbuckets - 1);
	249	/* XXXX What is the official way to reduce the size of the array? */
	250	switch (type) {
	251	case 0:
	252	p = b->buffer.nfree;
	253	break;
	254	case 1:
	255	p = b->buffer.ntotal;
	256	p1 = b->buffer.nfree;
	257	break;
	258	case 2:
	259	p = b->buffer.bucket_mem_size;
	260	break;
	261	case 3:
	262	p = b->buffer.bucket_available_size;
	263	break;
	264	}
	265	for (i = 0; i < b->buffer.nbuckets; i++) {
	266	svp = av_fetch(av, i, 1);
	267	if (type == 1)
	268	sv_setiv(*svp, p[i]-p1[i]);
	269	else
	270	sv_setuv(*svp, p[i]);
	271	}
	272	}
	273	}
f681a178	274
f681a178	275	static void
d1424c31	276	mstats_fillhash(SV *sv, int level)
	277	{
	278	struct mstats_buffer buf;
	279
	280	if (!(SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVHV))
	281	croak("Not a hash reference");
	282	_fill_mstats(&buf, level);
	283	_mstats_to_hv((HV *)SvRV(sv), &buf, level);
	284	}
f681a178	285
f681a178	286	static void
d1424c31	287	mstats2hash(SV sv, SV rv, int level)
	288	{
	289	if (!(SvROK(rv) && SvTYPE(SvRV(rv)) == SVt_PVHV))
	290	croak("Not a hash reference");
	291	if (!SvPOK(sv))
	292	croak("Undefined value when expecting mstats buffer");
	293	if (SvCUR(sv) != sizeof(struct mstats_buffer))
	294	croak("Wrong size for a value with a mstats buffer");
	295	_mstats_to_hv((HV )SvRV(rv), (struct mstats_buffer)SvPVX(sv), level);
	296	}
	297	#else /* !( defined(PERL_DEBUGGING_MSTATS) \|\| defined(DEBUGGING_MSTATS) \ ) */
f681a178	298	static void
d1424c31	299	fill_mstats(SV *sv, int level)
	300	{
	301	croak("Cannot report mstats without Perl malloc");
	302	}
f681a178	303
f681a178	304	static void
d1424c31	305	mstats_fillhash(SV *sv, int level)
	306	{
	307	croak("Cannot report mstats without Perl malloc");
	308	}
f681a178	309
f681a178	310	static void
d1424c31	311	mstats2hash(SV sv, SV rv, int level)
	312	{
	313	croak("Cannot report mstats without Perl malloc");
	314	}
	315	#endif /* defined(PERL_DEBUGGING_MSTATS) \|\| defined(DEBUGGING_MSTATS)... */
	316
83ee9e09	317	#define _CvGV(cv) \
83ee9e09	318	(SvROK(cv) && (SvTYPE(SvRV(cv))==SVt_PVCV) \
15bcf759	319	? SvREFCNT_inc(CvGV((CV*)SvRV(cv))) : &PL_sv_undef)
83ee9e09	320
3967c732	321	MODULE = Devel::Peek PACKAGE = Devel::Peek
	322
	323	void
	324	mstat(str="Devel::Peek::mstat: ")
	325	char *str
	326
	327	void
d1424c31	328	fill_mstats(SV *sv, int level = 0)
	329
	330	void
	331	mstats_fillhash(SV *sv, int level = 0)
	332	PROTOTYPE: \%;$
	333
	334	void
	335	mstats2hash(SV sv, SV rv, int level = 0)
	336	PROTOTYPE: $\%;$
	337
	338	void
3967c732	339	Dump(sv,lim=4)
	340	SV * sv
	341	I32 lim
	342	PPCODE:
	343	{
	344	SV *pv_lim_sv = perl_get_sv("Devel::Peek::pv_limit", FALSE);
7698c435	345	const STRLEN pv_lim = pv_lim_sv ? SvIV(pv_lim_sv) : 0;
3967c732	346	SV *dumpop = perl_get_sv("Devel::Peek::dump_ops", FALSE);
7698c435	347	const I32 save_dumpindent = PL_dumpindent;
3967c732	348	PL_dumpindent = 2;
eb160463	349	do_sv_dump(0, Perl_debug_log, sv, 0, lim,
eb160463	350	(bool)(dumpop && SvTRUE(dumpop)), pv_lim);
3967c732	351	PL_dumpindent = save_dumpindent;
	352	}
	353
	354	void
	355	DumpArray(lim,...)
	356	I32 lim
	357	PPCODE:
	358	{
	359	long i;
	360	SV *pv_lim_sv = perl_get_sv("Devel::Peek::pv_limit", FALSE);
7698c435	361	const STRLEN pv_lim = pv_lim_sv ? SvIV(pv_lim_sv) : 0;
3967c732	362	SV *dumpop = perl_get_sv("Devel::Peek::dump_ops", FALSE);
7698c435	363	const I32 save_dumpindent = PL_dumpindent;
3967c732	364	PL_dumpindent = 2;
	365
	366	for (i=1; i<items; i++) {
7b0972df	367	PerlIO_printf(Perl_debug_log, "Elt No. %ld 0x%"UVxf"\n", i - 1, PTR2UV(ST(i)));
eb160463	368	do_sv_dump(0, Perl_debug_log, ST(i), 0, lim,
eb160463	369	(bool)(dumpop && SvTRUE(dumpop)), pv_lim);
3967c732	370	}
	371	PL_dumpindent = save_dumpindent;
	372	}
	373
	374	void
	375	DumpProg()
	376	PPCODE:
	377	{
d2560b70	378	warn("dumpindent is %d", (int)PL_dumpindent);
3967c732	379	if (PL_main_root)
	380	op_dump(PL_main_root);
	381	}
	382
	383	I32
	384	SvREFCNT(sv)
	385	SV * sv
	386
	387	# PPCODE needed since otherwise sv_2mortal is inserted that will kill the value.
	388
	389	SV *
	390	SvREFCNT_inc(sv)
	391	SV * sv
	392	PPCODE:
	393	{
	394	RETVAL = SvREFCNT_inc(sv);
	395	PUSHs(RETVAL);
	396	}
	397
	398	# PPCODE needed since by default it is void
	399
8063af02	400	void
3967c732	401	SvREFCNT_dec(sv)
	402	SV * sv
	403	PPCODE:
	404	{
	405	SvREFCNT_dec(sv);
	406	PUSHs(sv);
	407	}
	408
	409	SV *
	410	DeadCode()
cea2e8a9	411	CODE:
	412	RETVAL = DeadCode(aTHX);
	413	OUTPUT:
	414	RETVAL
83ee9e09	415
	416	MODULE = Devel::Peek PACKAGE = Devel::Peek PREFIX = _
	417
	418	SV *
	419	_CvGV(cv)
	420	SV *cv
bd16a5f0	421
	422	bool
	423	_runops_debug(int flag = -1)