diff options
Diffstat (limited to 'ext/Devel/Peek/Peek.xs')
| -rw-r--r-- | ext/Devel/Peek/Peek.xs | 187 |
1 files changed, 186 insertions, 1 deletions
diff --git a/ext/Devel/Peek/Peek.xs b/ext/Devel/Peek/Peek.xs index 9837e9ceb2..e5fc8ae2c9 100644 --- a/ext/Devel/Peek/Peek.xs +++ b/ext/Devel/Peek/Peek.xs @@ -125,6 +125,180 @@ DeadCode(pTHX) 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]; +}; + +void +_fill_mstats(struct mstats_buffer *b, int level) +{ + 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); +} + +void +fill_mstats(SV *sv, int level) +{ + int nbuckets; + struct mstats_buffer buf; + + 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); +} + +void +_mstats_to_hv(HV *hv, struct mstats_buffer *b, int level) +{ + 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, *p1; + 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(); + SvUPGRADE(*svp, SVt_RV); + SvRV(*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]); + } + } +} +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); +} +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) \ ) */ +void +fill_mstats(SV *sv, int level) +{ + croak("Cannot report mstats without Perl malloc"); +} +void +mstats_fillhash(SV *sv, int level) +{ + croak("Cannot report mstats without Perl malloc"); +} +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) @@ -136,6 +310,17 @@ 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 @@ -173,7 +358,7 @@ void DumpProg() PPCODE: { - warn("dumpindent is %d", PL_dumpindent); + warn("dumpindent is %d", (int)PL_dumpindent); if (PL_main_root) op_dump(PL_main_root); } |