diff options
Diffstat (limited to 'contrib/perl5/ext/Devel/DProf')
| -rw-r--r-- | contrib/perl5/ext/Devel/DProf/Changes | 176 | ||||
| -rw-r--r-- | contrib/perl5/ext/Devel/DProf/DProf.pm | 196 | ||||
| -rw-r--r-- | contrib/perl5/ext/Devel/DProf/DProf.xs | 689 | ||||
| -rw-r--r-- | contrib/perl5/ext/Devel/DProf/Makefile.PL | 17 | ||||
| -rw-r--r-- | contrib/perl5/ext/Devel/DProf/Todo | 13 |
5 files changed, 1091 insertions, 0 deletions
diff --git a/contrib/perl5/ext/Devel/DProf/Changes b/contrib/perl5/ext/Devel/DProf/Changes new file mode 100644 index 0000000..216498b --- /dev/null +++ b/contrib/perl5/ext/Devel/DProf/Changes @@ -0,0 +1,176 @@ +1999 Jan 8 + + Ilya Zakharevich: + Newer perls: Add PERL_POLLUTE and dTHR. + +1998 Nov 10 +This version of DProf should work with older Perls too, but to get +full benefits some patches to 5.004_55 are needed. Patches take effect +after new version of Perl is installed, and DProf recompiled. + +Without these patches the overhead of DProf is too big, thus the statistic +may be very skewed. + +Oct 98: + Ilya Zakharevich: + DProf.xs + - correct defstash to PL_defstash + - nonlocal exits work + dprofpp + - nonlocal exits work + DProf.pm + - documentation updated + t/test6.* + - added + +Nov-Dec 97: + Jason E. Holt and Ilya Zakharevich: + DProf.xs + - will not wait until completion to write the output, size of buffer + regulated by PERL_DPROF_BUFFER, default 2**14 words; + + Ilya Zakharevich: + dprofpp + - smarter in fixing garbled profiles; + - subtracts DProf output overhead, and suggested profiler overhead; + - new options -A, -R, -g subroutine, -S; + - handles 'goto' too; + DProf.xs + - 7x denser output (time separated from name, ids for subs); + - outputs report-write overhead; + - optional higher-resolution (currently OS/2 only, cannot grok VMS code); + - outputs suggested profiler overhead; + - handles 'goto' too; + - handles PERL_DPROF_TICKS (on OS/2, VMS may be easily modified too) + +Jun 14, 97 andreas koenig adds the compatibility notes to the README +and lets the Makefile.PL die on $] < 5.004. + +Jun 06, 97 andreas koenig applies a patch by gurusamy sarathy because +Dean is not available for comments at that time. The patch is available +from CPAN in the authors/id/GSAR directory for inspection. + +Sep 30, 96 dmr + DProf.xs + - added Ilya's patches to fix "&bar as &bar(@_)" bug. This also fixes + the coredumps people have seen when using this with 5.003+. + DProf.pm + - updated manpage + t/bug.t + - moved to test5 + Makefile.PL + - remove special case for bug.t + +Jun 26, 96 dmr + dprofpp.PL + - smarter r.e. to find VERSION in Makefile (for MM5.27). + DProf.pm + - updated manpage + DProf.xs + - keep pid of profiled process, if process forks then only the + parent is profiled. Added test4 for this. + +Mar 2, 96 dmr + README + - updated + dprofpp + - updated manpage, point to DProf for raw profile description. + DProf.pm + - update manpage, update raw profile description with XS_VERSION. + - update manpage for AUTOLOAD changes. + DProf.xs + - smart handling of &AUTOLOAD--looks in $AUTOLOAD for the sub name. + this fixes one problem with corrupt profiles. + +Feb 5, 96 dmr + dprofpp + - updated manpage + - added -E/-I for exclusive/inclusive times + - added DPROFPP_OPTS -- lazily + - added -p/-Q for profile-then-analyze + - added version check + dprofpp.PL + - pull dprofpp's version id from the makefile + DProf.pm + - added version to bootstrap + - updated doc + - updated doc, DProf and -w are now friendly to each other + DProf.xs + - using savepv + - added Tim's patch to check for DBsub, avoids -MDevel::DProf coredump + - turn off warnings during newXS("DB::sub") + tests + - added Tim's patch to ignore Loader::import in results + - added Tim's patch to aid readability of test?.v output + + +-- from those days when I kept a unique changelog for each module -- + +# Devel::DProf - a Perl code profiler +# 31oct95 +# +# changes/bugs fixed since 5apr95 version -dmr: +# -added VMS patches from CharlesB. +# -now open ./tmon.out in BOOT. +# changes/bugs fixed since 2apr95 version -dmr: +# -now mallocing an extra byte for the \0 :) +# changes/bugs fixed since 01mar95 version -dmr: +# -stringified code ref is used for name of anonymous sub. +# -include stash name with stringified code ref. +# -use perl.c's DBsingle and DBsub. +# -now using croak() and warn(). +# -print "timer is on" before turning timer on. +# -use safefree() instead of free(). +# -rely on PM to provide full path name to tmon.out. +# -print errno if unable to write tmon.out. +# changes/bugs fixed since 03feb95 version -dmr: +# -comments +# changes/bugs fixed since 31dec94 version -dmr: +# -added patches from AndyD. +# + +# Devel::DProf - a Perl code profiler +# 31oct95 +# +# changes/bugs fixed since 05apr95 version -dmr: +# - VMS-related prob; now let tmon.out name be handled in XS. +# changes/bugs fixed since 01mar95 version -dmr: +# - record $pwd and build pathname for tmon.out +# changes/bugs fixed since 03feb95 version -dmr: +# - fixed some doc bugs +# - added require 5.000 +# - added -w note to bugs section of pod +# changes/bugs fixed since 31dec94 version -dmr: +# - podified +# + + +# dprofpp - display perl profile data +# 31oct95 +# +# changes/bugs fixed since 7oct95 version -dmr: +# - PL'd +# changes/bugs fixed since 5apr95 version -dmr: +# - touch up handling of exit timestamps. +# - suggests -F when exit timestamps are missing. +# - added compressed execution tree patches from AchimB, put under -t. +# now -z is the default action; user+system time. +# - doc changes. +# changes/bugs fixed since 10feb95 version -dmr: +# - summary info is printed by default, opt_c is gone. +# - fixed some doc bugs +# - changed name to dprofpp +# changes/bugs fixed since 03feb95 version -dmr: +# - fixed division by zero. +# - replace many local()s with my(). +# - now prints user+system times by default +# now -u prints user time, -U prints unsorted. +# - fixed documentation +# - fixed output, to clarify that times are given in seconds. +# - can now fake exit timestamps if the profile is garbled. +# changes/bugs fixed since 17jun94 version -dmr: +# - podified. +# - correct old documentation flaws. +# - added AndyD's patches. +# + diff --git a/contrib/perl5/ext/Devel/DProf/DProf.pm b/contrib/perl5/ext/Devel/DProf/DProf.pm new file mode 100644 index 0000000..38082fc --- /dev/null +++ b/contrib/perl5/ext/Devel/DProf/DProf.pm @@ -0,0 +1,196 @@ +require 5.005_64; + +=head1 NAME + +Devel::DProf - a Perl code profiler + +=head1 SYNOPSIS + + perl5 -d:DProf test.pl + +=head1 DESCRIPTION + +The Devel::DProf package is a Perl code profiler. This will collect +information on the execution time of a Perl script and of the subs in that +script. This information can be used to determine which subroutines are +using the most time and which subroutines are being called most often. This +information can also be used to create an execution graph of the script, +showing subroutine relationships. + +To profile a Perl script run the perl interpreter with the B<-d> debugging +switch. The profiler uses the debugging hooks. So to profile script +F<test.pl> the following command should be used: + + perl5 -d:DProf test.pl + +When the script terminates (or when the output buffer is filled) the +profiler will dump the profile information to a file called +F<tmon.out>. A tool like I<dprofpp> can be used to interpret the +information which is in that profile. The following command will +print the top 15 subroutines which used the most time: + + dprofpp + +To print an execution graph of the subroutines in the script use the +following command: + + dprofpp -T + +Consult L<dprofpp> for other options. + +=head1 PROFILE FORMAT + +The old profile is a text file which looks like this: + + #fOrTyTwO + $hz=100; + $XS_VERSION='DProf 19970606'; + # All values are given in HZ + $rrun_utime=2; $rrun_stime=0; $rrun_rtime=7 + PART2 + + 26 28 566822884 DynaLoader::import + - 26 28 566822884 DynaLoader::import + + 27 28 566822885 main::bar + - 27 28 566822886 main::bar + + 27 28 566822886 main::baz + + 27 28 566822887 main::bar + - 27 28 566822888 main::bar + [....] + +The first line is the magic number. The second line is the hertz value, or +clock ticks, of the machine where the profile was collected. The third line +is the name and version identifier of the tool which created the profile. +The fourth line is a comment. The fifth line contains three variables +holding the user time, system time, and realtime of the process while it was +being profiled. The sixth line indicates the beginning of the sub +entry/exit profile section. + +The columns in B<PART2> are: + + sub entry(+)/exit(-) mark + app's user time at sub entry/exit mark, in ticks + app's system time at sub entry/exit mark, in ticks + app's realtime at sub entry/exit mark, in ticks + fully-qualified sub name, when possible + +With newer perls another format is used, which may look like this: + + #fOrTyTwO + $hz=10000; + $XS_VERSION='DProf 19971213'; + # All values are given in HZ + $over_utime=5917; $over_stime=0; $over_rtime=5917; + $over_tests=10000; + $rrun_utime=1284; $rrun_stime=0; $rrun_rtime=1284; + $total_marks=6; + + PART2 + @ 406 0 406 + & 2 main bar + + 2 + @ 456 0 456 + - 2 + @ 1 0 1 + & 3 main baz + + 3 + @ 141 0 141 + + 2 + @ 141 0 141 + - 2 + @ 1 0 1 + & 4 main foo + + 4 + @ 142 0 142 + + & Devel::DProf::write + @ 5 0 5 + - & Devel::DProf::write + +(with high value of $ENV{PERL_DPROF_TICKS}). + +New C<$over_*> values show the measured overhead of making $over_tests +calls to the profiler These values are used by the profiler to +subtract the overhead from the runtimes. + +The lines starting with C<@> mark time passed from the previous C<@> +line. The lines starting with C<&> introduce new subroutine I<id> and +show the package and the subroutine name of this id. Lines starting +with C<+>, C<-> and C<*> mark entering and exit of subroutines by +I<id>s, and C<goto &subr>. + +The I<old-style> C<+>- and C<->-lines are used to mark the overhead +related to writing to profiler-output file. + +=head1 AUTOLOAD + +When Devel::DProf finds a call to an C<&AUTOLOAD> subroutine it looks at the +C<$AUTOLOAD> variable to find the real name of the sub being called. See +L<perlsub/"Autoloading">. + +=head1 ENVIRONMENT + +C<PERL_DPROF_BUFFER> sets size of output buffer in words. Defaults to 2**14. + +C<PERL_DPROF_TICKS> sets number of ticks per second on some systems where +a replacement for times() is used. Defaults to the value of C<HZ> macro. + +C<PERL_DPROF_OUT_FILE_NAME> sets the name of the output file. If not set, +defaults to tmon.out. + +=head1 BUGS + +Builtin functions cannot be measured by Devel::DProf. + +With a newer Perl DProf relies on the fact that the numeric slot of +$DB::sub contains an address of a subroutine. Excessive manipulation +of this variable may overwrite this slot, as in + + $DB::sub = 'current_sub'; + ... + $addr = $DB::sub + 0; + +will set this numeric slot to numeric value of the string +C<current_sub>, i.e., to C<0>. This will cause a segfault on the exit +from this subroutine. Note that the first assignment above does not +change the numeric slot (it will I<mark> it as invalid, but will not +write over it). + +Mail bug reports and feature requests to the perl5-porters mailing list at +F<E<lt>perl5-porters@perl.orgE<gt>>. + +=head1 SEE ALSO + +L<perl>, L<dprofpp>, times(2) + +=cut + +# This sub is needed for calibration. +package Devel::DProf; + +sub NONESUCH_noxs { + return $Devel::DProf::VERSION; +} + +package DB; + +# +# As of perl5.003_20, &DB::sub stub is not needed (some versions +# even had problems if stub was redefined with XS version). +# + +# disable DB single-stepping +BEGIN { $single = 0; } + +# This sub is needed during startup. +sub DB { +# print "nonXS DBDB\n"; +} + +use XSLoader (); + +# Underscore to allow older Perls to access older version from CPAN +$Devel::DProf::VERSION = '20000000.00_00'; # this version not authorized by + # Dean Roehrich. See "Changes" file. + +XSLoader::load 'Devel::DProf', $Devel::DProf::VERSION; + +1; diff --git a/contrib/perl5/ext/Devel/DProf/DProf.xs b/contrib/perl5/ext/Devel/DProf/DProf.xs new file mode 100644 index 0000000..31e984f --- /dev/null +++ b/contrib/perl5/ext/Devel/DProf/DProf.xs @@ -0,0 +1,689 @@ +#define PERL_NO_GET_CONTEXT +#include "EXTERN.h" +#include "perl.h" +#include "XSUB.h" + +/* For older Perls */ +#ifndef dTHR +# define dTHR int dummy_thr +#endif /* dTHR */ + +/*#define DBG_SUB 1 */ +/*#define DBG_TIMER 1 */ + +#ifdef DBG_SUB +# define DBG_SUB_NOTIFY(A,B) warn(A, B) +#else +# define DBG_SUB_NOTIFY(A,B) /* nothing */ +#endif + +#ifdef DBG_TIMER +# define DBG_TIMER_NOTIFY(A) warn(A) +#else +# define DBG_TIMER_NOTIFY(A) /* nothing */ +#endif + +/* HZ == clock ticks per second */ +#ifdef VMS +# define HZ ((I32)CLK_TCK) +# define DPROF_HZ HZ +# include <starlet.h> /* prototype for sys$gettim() */ +# define Times(ptr) (dprof_times(aTHX_ ptr)) +#else +# ifndef HZ +# ifdef CLK_TCK +# define HZ ((I32)CLK_TCK) +# else +# define HZ 60 +# endif +# endif +# ifdef OS2 /* times() has significant overhead */ +# define Times(ptr) (dprof_times(aTHX_ ptr)) +# define INCL_DOSPROFILE +# define INCL_DOSERRORS +# include <os2.h> +# define toLongLong(arg) (*(long long*)&(arg)) +# define DPROF_HZ g_dprof_ticks +# else +# define Times(ptr) (times(ptr)) +# define DPROF_HZ HZ +# endif +#endif + +XS(XS_Devel__DProf_END); /* used by prof_mark() */ + +/* Everything is built on times(2). See its manpage for a description + * of the timings. + */ + +union prof_any { + clock_t tms_utime; /* cpu time spent in user space */ + clock_t tms_stime; /* cpu time spent in system */ + clock_t realtime; /* elapsed real time, in ticks */ + char *name; + U32 id; + opcode ptype; +}; + +typedef union prof_any PROFANY; + +typedef struct { + U32 dprof_ticks; + char* out_file_name; /* output file (defaults to tmon.out) */ + PerlIO* fp; /* pointer to tmon.out file */ + long TIMES_LOCATION; /* Where in the file to store the time totals */ + int SAVE_STACK; /* How much data to buffer until end of run */ + int prof_pid; /* pid of profiled process */ + struct tms prof_start; + struct tms prof_end; + clock_t rprof_start; /* elapsed real time ticks */ + clock_t rprof_end; + clock_t wprof_u; + clock_t wprof_s; + clock_t wprof_r; + clock_t otms_utime; + clock_t otms_stime; + clock_t orealtime; + PROFANY* profstack; + int profstack_max; + int profstack_ix; + HV* cv_hash; + U32 total; + U32 lastid; + U32 default_perldb; + U32 depth; +#ifdef OS2 + ULONG frequ; + long long start_cnt; +#endif +#ifdef PERL_IMPLICIT_CONTEXT +# define register + pTHX; +# undef register +#endif +} prof_state_t; + +prof_state_t g_prof_state; + +#define g_dprof_ticks g_prof_state.dprof_ticks +#define g_out_file_name g_prof_state.out_file_name +#define g_fp g_prof_state.fp +#define g_TIMES_LOCATION g_prof_state.TIMES_LOCATION +#define g_SAVE_STACK g_prof_state.SAVE_STACK +#define g_prof_pid g_prof_state.prof_pid +#define g_prof_start g_prof_state.prof_start +#define g_prof_end g_prof_state.prof_end +#define g_rprof_start g_prof_state.rprof_start +#define g_rprof_end g_prof_state.rprof_end +#define g_wprof_u g_prof_state.wprof_u +#define g_wprof_s g_prof_state.wprof_s +#define g_wprof_r g_prof_state.wprof_r +#define g_otms_utime g_prof_state.otms_utime +#define g_otms_stime g_prof_state.otms_stime +#define g_orealtime g_prof_state.orealtime +#define g_profstack g_prof_state.profstack +#define g_profstack_max g_prof_state.profstack_max +#define g_profstack_ix g_prof_state.profstack_ix +#define g_cv_hash g_prof_state.cv_hash +#define g_total g_prof_state.total +#define g_lastid g_prof_state.lastid +#define g_default_perldb g_prof_state.default_perldb +#define g_depth g_prof_state.depth +#ifdef PERL_IMPLICIT_CONTEXT +# define g_THX g_prof_state.aTHX +#endif +#ifdef OS2 +# define g_frequ g_prof_state.frequ +# define g_start_cnt g_prof_state.start_cnt +#endif + +clock_t +dprof_times(pTHX_ struct tms *t) +{ +#ifdef OS2 + ULONG rc; + QWORD cnt; + STRLEN n_a; + + if (!g_frequ) { + if (CheckOSError(DosTmrQueryFreq(&g_frequ))) + croak("DosTmrQueryFreq: %s", SvPV(perl_get_sv("!",TRUE),n_a)); + else + g_frequ = g_frequ/DPROF_HZ; /* count per tick */ + if (CheckOSError(DosTmrQueryTime(&cnt))) + croak("DosTmrQueryTime: %s", + SvPV(perl_get_sv("!",TRUE), n_a)); + g_start_cnt = toLongLong(cnt); + } + + if (CheckOSError(DosTmrQueryTime(&cnt))) + croak("DosTmrQueryTime: %s", SvPV(perl_get_sv("!",TRUE), n_a)); + t->tms_stime = 0; + return (t->tms_utime = (toLongLong(cnt) - g_start_cnt)/g_frequ); +#else /* !OS2 */ +# ifdef VMS + clock_t retval; + /* Get wall time and convert to 10 ms intervals to + * produce the return value dprof expects */ +# if defined(__DECC) && defined (__ALPHA) +# include <ints.h> + uint64 vmstime; + _ckvmssts(sys$gettim(&vmstime)); + vmstime /= 100000; + retval = vmstime & 0x7fffffff; +# else + /* (Older hw or ccs don't have an atomic 64-bit type, so we + * juggle 32-bit ints (and a float) to produce a time_t result + * with minimal loss of information.) */ + long int vmstime[2],remainder,divisor = 100000; + _ckvmssts(sys$gettim((unsigned long int *)vmstime)); + vmstime[1] &= 0x7fff; /* prevent overflow in EDIV */ + _ckvmssts(lib$ediv(&divisor,vmstime,(long int *)&retval,&remainder)); +# endif + /* Fill in the struct tms using the CRTL routine . . .*/ + times((tbuffer_t *)t); + return (clock_t) retval; +# else /* !VMS && !OS2 */ + return times(t); +# endif +#endif +} + +static void +prof_dumpa(pTHX_ opcode ptype, U32 id) +{ + if (ptype == OP_LEAVESUB) { + PerlIO_printf(g_fp,"- %"UVxf"\n", (UV)id); + } + else if(ptype == OP_ENTERSUB) { + PerlIO_printf(g_fp,"+ %"UVxf"\n", (UV)id); + } + else if(ptype == OP_GOTO) { + PerlIO_printf(g_fp,"* %"UVxf"\n", (UV)id); + } + else if(ptype == OP_DIE) { + PerlIO_printf(g_fp,"/ %"UVxf"\n", (UV)id); + } + else { + PerlIO_printf(g_fp,"Profiler unknown prof code %d\n", ptype); + } +} + +static void +prof_dumps(pTHX_ U32 id, char *pname, char *gname) +{ + PerlIO_printf(g_fp,"& %"UVxf" %s %s\n", (UV)id, pname, gname); +} + +static void +prof_dumpt(pTHX_ long tms_utime, long tms_stime, long realtime) +{ + PerlIO_printf(g_fp,"@ %ld %ld %ld\n", tms_utime, tms_stime, realtime); +} + +static void +prof_dump_until(pTHX_ long ix) +{ + long base = 0; + struct tms t1, t2; + clock_t realtime1, realtime2; + + realtime1 = Times(&t1); + + while (base < ix) { + opcode ptype = g_profstack[base++].ptype; + if (ptype == OP_TIME) { + long tms_utime = g_profstack[base++].tms_utime; + long tms_stime = g_profstack[base++].tms_stime; + long realtime = g_profstack[base++].realtime; + + prof_dumpt(aTHX_ tms_utime, tms_stime, realtime); + } + else if (ptype == OP_GV) { + U32 id = g_profstack[base++].id; + char *pname = g_profstack[base++].name; + char *gname = g_profstack[base++].name; + + prof_dumps(aTHX_ id, pname, gname); + } + else { + U32 id = g_profstack[base++].id; + prof_dumpa(aTHX_ ptype, id); + } + } + PerlIO_flush(g_fp); + realtime2 = Times(&t2); + if (realtime2 != realtime1 || t1.tms_utime != t2.tms_utime + || t1.tms_stime != t2.tms_stime) { + g_wprof_r += realtime2 - realtime1; + g_wprof_u += t2.tms_utime - t1.tms_utime; + g_wprof_s += t2.tms_stime - t1.tms_stime; + + PerlIO_printf(g_fp,"+ & Devel::DProf::write\n"); + PerlIO_printf(g_fp,"@ %"IVdf" %"IVdf" %"IVdf"\n", + /* The (IV) casts are one possibility: + * the Painfully Correct Way would be to + * have Clock_t_f. */ + (IV)(t2.tms_utime - t1.tms_utime), + (IV)(t2.tms_stime - t1.tms_stime), + (IV)(realtime2 - realtime1)); + PerlIO_printf(g_fp,"- & Devel::DProf::write\n"); + g_otms_utime = t2.tms_utime; + g_otms_stime = t2.tms_stime; + g_orealtime = realtime2; + PerlIO_flush(g_fp); + } +} + +static void +prof_mark(pTHX_ opcode ptype) +{ + struct tms t; + clock_t realtime, rdelta, udelta, sdelta; + char *name, *pv; + char *hvname; + STRLEN len; + SV *sv; + U32 id; + SV *Sub = GvSV(PL_DBsub); /* name of current sub */ + + if (g_SAVE_STACK) { + if (g_profstack_ix + 5 > g_profstack_max) { + g_profstack_max = g_profstack_max * 3 / 2; + Renew(g_profstack, g_profstack_max, PROFANY); + } + } + + realtime = Times(&t); + rdelta = realtime - g_orealtime; + udelta = t.tms_utime - g_otms_utime; + sdelta = t.tms_stime - g_otms_stime; + if (rdelta || udelta || sdelta) { + if (g_SAVE_STACK) { + g_profstack[g_profstack_ix++].ptype = OP_TIME; + g_profstack[g_profstack_ix++].tms_utime = udelta; + g_profstack[g_profstack_ix++].tms_stime = sdelta; + g_profstack[g_profstack_ix++].realtime = rdelta; + } + else { /* Write it to disk now so's not to eat up core */ + if (g_prof_pid == (int)getpid()) { + prof_dumpt(aTHX_ udelta, sdelta, rdelta); + PerlIO_flush(g_fp); + } + } + g_orealtime = realtime; + g_otms_stime = t.tms_stime; + g_otms_utime = t.tms_utime; + } + + { + SV **svp; + char *gname, *pname; + CV *cv; + + cv = INT2PTR(CV*,SvIVX(Sub)); + svp = hv_fetch(g_cv_hash, (char*)&cv, sizeof(CV*), TRUE); + if (!SvOK(*svp)) { + GV *gv = CvGV(cv); + + sv_setiv(*svp, id = ++g_lastid); + pname = ((GvSTASH(gv) && HvNAME(GvSTASH(gv))) + ? HvNAME(GvSTASH(gv)) + : "(null)"); + gname = GvNAME(gv); + if (CvXSUB(cv) == XS_Devel__DProf_END) + return; + if (g_SAVE_STACK) { /* Store it for later recording -JH */ + g_profstack[g_profstack_ix++].ptype = OP_GV; + g_profstack[g_profstack_ix++].id = id; + g_profstack[g_profstack_ix++].name = pname; + g_profstack[g_profstack_ix++].name = gname; + } + else { /* Write it to disk now so's not to eat up core */ + /* Only record the parent's info */ + if (g_prof_pid == (int)getpid()) { + prof_dumps(aTHX_ id, pname, gname); + PerlIO_flush(g_fp); + } + else + PL_perldb = 0; /* Do not debug the kid. */ + } + } + else { + id = SvIV(*svp); + } + } + + g_total++; + if (g_SAVE_STACK) { /* Store it for later recording -JH */ + g_profstack[g_profstack_ix++].ptype = ptype; + g_profstack[g_profstack_ix++].id = id; + + /* Only record the parent's info */ + if (g_SAVE_STACK < g_profstack_ix) { + if (g_prof_pid == (int)getpid()) + prof_dump_until(aTHX_ g_profstack_ix); + else + PL_perldb = 0; /* Do not debug the kid. */ + g_profstack_ix = 0; + } + } + else { /* Write it to disk now so's not to eat up core */ + + /* Only record the parent's info */ + if (g_prof_pid == (int)getpid()) { + prof_dumpa(aTHX_ ptype, id); + PerlIO_flush(g_fp); + } + else + PL_perldb = 0; /* Do not debug the kid. */ + } +} + +#ifdef PL_NEEDED +# define defstash PL_defstash +#endif + +/* Counts overhead of prof_mark and extra XS call. */ +static void +test_time(pTHX_ clock_t *r, clock_t *u, clock_t *s) +{ + dTHR; + CV *cv = perl_get_cv("Devel::DProf::NONESUCH_noxs", FALSE); + int i, j, k = 0; + HV *oldstash = PL_curstash; + struct tms t1, t2; + clock_t realtime1, realtime2; + U32 ototal = g_total; + U32 ostack = g_SAVE_STACK; + U32 operldb = PL_perldb; + + g_SAVE_STACK = 1000000; + realtime1 = Times(&t1); + + while (k < 2) { + i = 0; + /* Disable debugging of perl_call_sv on second pass: */ + PL_curstash = (k == 0 ? PL_defstash : PL_debstash); + PL_perldb = g_default_perldb; + while (++i <= 100) { + j = 0; + g_profstack_ix = 0; /* Do not let the stack grow */ + while (++j <= 100) { +/* prof_mark(aTHX_ OP_ENTERSUB); */ + + PUSHMARK(PL_stack_sp); + perl_call_sv((SV*)cv, G_SCALAR); + PL_stack_sp--; +/* prof_mark(aTHX_ OP_LEAVESUB); */ + } + } + PL_curstash = oldstash; + if (k == 0) { /* Put time with debugging */ + realtime2 = Times(&t2); + *r = realtime2 - realtime1; + *u = t2.tms_utime - t1.tms_utime; + *s = t2.tms_stime - t1.tms_stime; + } + else { /* Subtract time without debug */ + realtime1 = Times(&t1); + *r -= realtime1 - realtime2; + *u -= t1.tms_utime - t2.tms_utime; + *s -= t1.tms_stime - t2.tms_stime; + } + k++; + } + g_total = ototal; + g_SAVE_STACK = ostack; + PL_perldb = operldb; +} + +static void +prof_recordheader(pTHX) +{ + clock_t r, u, s; + + /* g_fp is opened in the BOOT section */ + PerlIO_printf(g_fp, "#fOrTyTwO\n"); + PerlIO_printf(g_fp, "$hz=%"IVdf";\n", (IV)DPROF_HZ); + PerlIO_printf(g_fp, "$XS_VERSION='DProf %s';\n", XS_VERSION); + PerlIO_printf(g_fp, "# All values are given in HZ\n"); + test_time(aTHX_ &r, &u, &s); + PerlIO_printf(g_fp, + "$over_utime=%"IVdf"; $over_stime=%"IVdf"; $over_rtime=%"IVdf";\n", + /* The (IV) casts are one possibility: + * the Painfully Correct Way would be to + * have Clock_t_f. */ + (IV)u, (IV)s, (IV)r); + PerlIO_printf(g_fp, "$over_tests=10000;\n"); + + g_TIMES_LOCATION = PerlIO_tell(g_fp); + + /* Pad with whitespace. */ + /* This should be enough even for very large numbers. */ + PerlIO_printf(g_fp, "%*s\n", 240 , ""); + + PerlIO_printf(g_fp, "\n"); + PerlIO_printf(g_fp, "PART2\n"); + + PerlIO_flush(g_fp); +} + +static void +prof_record(pTHX) +{ + /* g_fp is opened in the BOOT section */ + + /* Now that we know the runtimes, fill them in at the recorded + location -JH */ + + clock_t r, u, s; + + if (g_SAVE_STACK) { + prof_dump_until(aTHX_ g_profstack_ix); + } + PerlIO_seek(g_fp, g_TIMES_LOCATION, SEEK_SET); + /* Write into reserved 240 bytes: */ + PerlIO_printf(g_fp, + "$rrun_utime=%"IVdf"; $rrun_stime=%"IVdf"; $rrun_rtime=%"IVdf";", + /* The (IV) casts are one possibility: + * the Painfully Correct Way would be to + * have Clock_t_f. */ + (IV)(g_prof_end.tms_utime-g_prof_start.tms_utime-g_wprof_u), + (IV)(g_prof_end.tms_stime-g_prof_start.tms_stime-g_wprof_s), + (IV)(g_rprof_end-g_rprof_start-g_wprof_r)); + PerlIO_printf(g_fp, "\n$total_marks=%"IVdf, (IV)g_total); + + PerlIO_close(g_fp); +} + +#define NONESUCH() + +static void +check_depth(pTHX_ void *foo) +{ + U32 need_depth = (U32)foo; + if (need_depth != g_depth) { + if (need_depth > g_depth) { + warn("garbled call depth when profiling"); + } + else { + I32 marks = g_depth - need_depth; + +/* warn("Check_depth: got %d, expected %d\n", g_depth, need_depth); */ + while (marks--) { + prof_mark(aTHX_ OP_DIE); + } + g_depth = need_depth; + } + } +} + +#define for_real +#ifdef for_real + +XS(XS_DB_sub) +{ + dXSARGS; + dORIGMARK; + SV *Sub = GvSV(PL_DBsub); /* name of current sub */ + +#ifdef PERL_IMPLICIT_CONTEXT + /* profile only the interpreter that loaded us */ + if (g_THX != aTHX) { + PUSHMARK(ORIGMARK); + perl_call_sv(INT2PTR(SV*,SvIV(Sub)), GIMME | G_NODEBUG); + } + else +#endif + { + HV *oldstash = PL_curstash; + + DBG_SUB_NOTIFY("XS DBsub(%s)\n", SvPV_nolen(Sub)); + + SAVEDESTRUCTOR_X(check_depth, (void*)g_depth); + g_depth++; + + prof_mark(aTHX_ OP_ENTERSUB); + PUSHMARK(ORIGMARK); + perl_call_sv(INT2PTR(SV*,SvIV(Sub)), GIMME | G_NODEBUG); + prof_mark(aTHX_ OP_LEAVESUB); + g_depth--; + } + return; +} + +XS(XS_DB_goto) +{ +#ifdef PERL_IMPLICIT_CONTEXT + if (g_THX == aTHX) +#endif + { + prof_mark(aTHX_ OP_GOTO); + return; + } +} + +#endif /* for_real */ + +#ifdef testing + + MODULE = Devel::DProf PACKAGE = DB + + void + sub(...) + PPCODE: + { + dORIGMARK; + HV *oldstash = PL_curstash; + SV *Sub = GvSV(PL_DBsub); /* name of current sub */ + /* SP -= items; added by xsubpp */ + DBG_SUB_NOTIFY("XS DBsub(%s)\n", SvPV_nolen(Sub)); + + sv_setiv(PL_DBsingle, 0); /* disable DB single-stepping */ + + prof_mark(aTHX_ OP_ENTERSUB); + PUSHMARK(ORIGMARK); + + PL_curstash = PL_debstash; /* To disable debugging of perl_call_sv */ + perl_call_sv(Sub, GIMME); + PL_curstash = oldstash; + + prof_mark(aTHX_ OP_LEAVESUB); + SPAGAIN; + /* PUTBACK; added by xsubpp */ + } + +#endif /* testing */ + +MODULE = Devel::DProf PACKAGE = Devel::DProf + +void +END() +PPCODE: + { + if (PL_DBsub) { + /* maybe the process forked--we want only + * the parent's profile. + */ + if ( +#ifdef PERL_IMPLICIT_CONTEXT + g_THX == aTHX && +#endif + g_prof_pid == (int)getpid()) + { + g_rprof_end = Times(&g_prof_end); + DBG_TIMER_NOTIFY("Profiler timer is off.\n"); + prof_record(aTHX); + } + } + } + +void +NONESUCH() + +BOOT: + { + g_TIMES_LOCATION = 42; + g_SAVE_STACK = 1<<14; + g_profstack_max = 128; +#ifdef PERL_IMPLICIT_CONTEXT + g_THX = aTHX; +#endif + + /* Before we go anywhere make sure we were invoked + * properly, else we'll dump core. + */ + if (!PL_DBsub) + croak("DProf: run perl with -d to use DProf.\n"); + + /* When we hook up the XS DB::sub we'll be redefining + * the DB::sub from the PM file. Turn off warnings + * while we do this. + */ + { + I32 warn_tmp = PL_dowarn; + PL_dowarn = 0; + newXS("DB::sub", XS_DB_sub, file); + newXS("DB::goto", XS_DB_goto, file); + PL_dowarn = warn_tmp; + } + + sv_setiv(PL_DBsingle, 0); /* disable DB single-stepping */ + + { + char *buffer = getenv("PERL_DPROF_BUFFER"); + + if (buffer) { + g_SAVE_STACK = atoi(buffer); + } + + buffer = getenv("PERL_DPROF_TICKS"); + + if (buffer) { + g_dprof_ticks = atoi(buffer); /* Used under OS/2 only */ + } + else { + g_dprof_ticks = HZ; + } + + buffer = getenv("PERL_DPROF_OUT_FILE_NAME"); + g_out_file_name = savepv(buffer ? buffer : "tmon.out"); + } + + if ((g_fp = PerlIO_open(g_out_file_name, "w")) == NULL) + croak("DProf: unable to write '%s', errno = %d\n", + g_out_file_name, errno); + + g_default_perldb = PERLDBf_NONAME | PERLDBf_SUB | PERLDBf_GOTO; + g_cv_hash = newHV(); + g_prof_pid = (int)getpid(); + + New(0, g_profstack, g_profstack_max, PROFANY); + prof_recordheader(aTHX); + DBG_TIMER_NOTIFY("Profiler timer is on.\n"); + g_orealtime = g_rprof_start = Times(&g_prof_start); + g_otms_utime = g_prof_start.tms_utime; + g_otms_stime = g_prof_start.tms_stime; + PL_perldb = g_default_perldb; + } diff --git a/contrib/perl5/ext/Devel/DProf/Makefile.PL b/contrib/perl5/ext/Devel/DProf/Makefile.PL new file mode 100644 index 0000000..667cc52 --- /dev/null +++ b/contrib/perl5/ext/Devel/DProf/Makefile.PL @@ -0,0 +1,17 @@ +use ExtUtils::MakeMaker; + +WriteMakefile( + NAME => 'Devel::DProf', + DISTNAME => 'DProf', + VERSION_FROM => 'DProf.pm', + clean => { 'FILES' => 'tmon.out t/tmon.out t/err'}, + XSPROTOARG => '-noprototypes', + DEFINE => '-DPERLDBf_NONAME=0x40 -DPERLDBf_GOTO=0x80 ' + .'-DG_NODEBUG=32 -DPL_NEEDED', + dist => { + COMPRESS => 'gzip -9f', + SUFFIX => 'gz', + DIST_DEFAULT => 'all tardist', + }, + MAN3PODS => {}, +); diff --git a/contrib/perl5/ext/Devel/DProf/Todo b/contrib/perl5/ext/Devel/DProf/Todo new file mode 100644 index 0000000..0e00347 --- /dev/null +++ b/contrib/perl5/ext/Devel/DProf/Todo @@ -0,0 +1,13 @@ +- work on test suite. +- localize the depth to guard against non-local exits. +Current overhead (with PERLDBf_NONAME) wrt non-debugging run (estimates): + 8% extra call frame on DB::sub + 7% output of subroutine data + 70% output of timing data (on OS/2, 35% with custom dprof_times()) +(Additional 17% are spent to write the output, but they are counted + and subtracted.) + +With compensation for DProf overhead all but some odd 12% are subtracted ?! + +- Calculate overhead/count for XS calls and Perl calls separately. +- goto &XSUB in pp_ctl.c; |
