Rename ext/Devel/DProf to ext/Devel-DProf

6 files changed, 1348 insertions, 0 deletions

diff --git a/ext/Devel-DProf/Changes b/ext/Devel-DProf/Changes
new file mode 100644
index 0000000000..1d1ba0e7b9
--- /dev/null
+++ b/ext/Devel-DProf/Changes
@@ -0,0 +1,204 @@
+2003 Aug 1
+ Radu Greab:
+  DProf.xs:
+    - do not assume that $^P stays unchanged inside the profiled subroutine
+  DProf.pm:
+    - increase VERSION
+
+2003 Jul 6
+
+ Radu Greab:
+  DProf.xs:
+    - improved the mapping between subroutines and identifiers
+    - do not assume that $^P stays unchanged during the lifetime of the script
+    - panic when the profiled subroutine is leaved with goto/last/next
+  DProf.pm:
+    - document the problem with the subroutines exited with goto/last/next
+  t/test{7,8}*
+    - added
+
+2003 Jan 8
+
+ Blair Zajac:
+  DProf.xs:
+    - To avoid core dumps, increase stack size by 10 instead of 5.
+    - Assert that g_profstack is large enough when DEBUGGING is defined
+  DProf.pm:
+    - Bump VERSION.
+
+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/ext/Devel-DProf/DProf.pm b/ext/Devel-DProf/DProf.pm
new file mode 100644
index 0000000000..7405b78dcf
--- /dev/null
+++ b/ext/Devel-DProf/DProf.pm
@@ -0,0 +1,238 @@
+use 5.006_001;
+
+=head1 NAME
+
+Devel::DProf - a Perl code profiler
+
+=head1 SYNOPSIS
+
+	perl -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:
+
+	perl -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.
+
+Lines starting with C<@> mark the amount of time passed since the
+previous C<@> line.  The numbers following the C<@> are integer tick
+counts representing user, system, and real time.  Divide these numbers
+by the $hz value in the header to get seconds.
+
+Lines starting with C<&> map subroutine identifiers (an integer) to
+subroutine packages and names.  These should only occur once per
+subroutine.
+
+Lines starting with C<+> or C<-> mark normal entering and exit of
+subroutines.  The number following is a reference to a subroutine
+identifier.
+
+Lines starting with C<*> mark where subroutines are entered by C<goto
+&subr>, but note that the return will still be marked as coming from
+the original sub.  The sequence might look like this:
+
+	+ 5
+	* 6
+	- 5
+
+Lines starting with C</> is like C<-> but mark where subroutines are
+exited by dying.  Example:
+
+	+ 5
+	+ 6
+	/ 6
+	/ 5
+
+Finally you might find C<@> time stamp marks surrounded by C<+ &
+Devel::DProf::write> and C<- & Devel::DProf::write> lines.  These 3
+lines are outputted when printing of the mark above actually consumed
+measurable time.
+
+=head1 AUTOLOAD
+
+When Devel::DProf finds a call to an C<&AUTOLOAD> subroutine it looks at the
+C<$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).
+
+Another problem is that if a subroutine exits using goto(LABEL),
+last(LABEL) or next(LABEL) then perl may crash or Devel::DProf will die
+with the error:
+
+   panic: Devel::DProf inconsistent subroutine return
+
+For example, this code will break under Devel::DProf:
+
+   sub foo {
+     last FOO;
+   }
+   FOO: {
+     foo();
+   }
+
+A pattern like this is used by Test::More's skip() function, for
+example.  See L<perldiag> for more details.
+
+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 { $single = 0; }
+
+# This sub is needed during startup.
+sub DB { 
+#	print "nonXS DBDB\n";
+}
+
+use XSLoader ();
+
+$Devel::DProf::VERSION = '20080331.00';  # this version not authorized by
+				         # Dean Roehrich. See "Changes" file.
+
+XSLoader::load 'Devel::DProf', $Devel::DProf::VERSION;
+
+1;
diff --git a/ext/Devel-DProf/DProf.xs b/ext/Devel-DProf/DProf.xs
new file mode 100644
index 0000000000..4eef0bc289
--- /dev/null
+++ b/ext/Devel-DProf/DProf.xs
@@ -0,0 +1,785 @@
+#define PERL_NO_GET_CONTEXT
+#include "EXTERN.h"
+#include "perl.h"
+#include "XSUB.h"
+
+/* define DBG_SUB to cause a warning on each subroutine entry. */
+/*#define DBG_SUB 1      */
+
+/* define DBG_TIMER to cause a warning when the timer is turned on and off. */
+/*#define DBG_TIMER 1  */
+
+#ifdef DEBUGGING
+#define ASSERT(x) assert(x)
+#else
+#define ASSERT(x)
+#endif
+
+static CV *
+db_get_cv(pTHX_ SV *sv)
+{
+	CV *cv;
+
+	if (SvIOK(sv)) {			/* if (PERLDB_SUB_NN) { */
+	    cv = INT2PTR(CV*,SvIVX(sv));
+	} else {
+	    if (SvPOK(sv)) {
+		STRLEN len;
+		const char *const name = SvPV(sv, len);
+		cv = get_cvn_flags(name, len, GV_ADD | SvUTF8(sv));
+	    } else if (SvROK(sv)) {
+		cv = (CV*)SvRV(sv);
+	    } else {
+		croak("DProf: don't know what subroutine to profile");
+	    }
+	}
+	return cv;
+}
+
+#ifdef DBG_SUB
+#  define DBG_SUB_NOTIFY(A) dprof_dbg_sub_notify(aTHX_ A)
+void
+dprof_dbg_sub_notify(pTHX_ SV *Sub) {
+    CV * const cv = db_get_cv(aTHX_ Sub);
+    GV * const gv = cv ? CvGV(cv) : NULL;
+    if (cv && gv) {
+	warn("XS DBsub(%s::%s)\n",
+	     ((GvSTASH(gv) && HvNAME_get(GvSTASH(gv))) ?
+	      HvNAME_get(GvSTASH(gv)) : "(null)"),
+	     GvNAME(gv));
+    } else {
+	warn("XS DBsub(unknown) at %x", Sub);
+    }
+}
+#else
+#  define DBG_SUB_NOTIFY(A)  /* nothing */
+#endif
+
+
+#ifdef DBG_TIMER
+#  define DBG_TIMER_NOTIFY(A) warn(A)
+#else
+#  define DBG_TIMER_NOTIFY(A)  /* nothing */
+#endif
+
+/* HZ == clock ticks per second */
+#ifdef VMS
+#  define HZ ((I32)CLK_TCK)
+#  define DPROF_HZ HZ
+#  include <starlet.h>  /* prototype for sys$gettim() */
+#  include <lib$routines.h>
+#  define Times(ptr) (dprof_times(aTHX_ ptr))
+#  define NEEDS_DPROF_TIMES
+#else
+#  ifdef BSDish
+#    define Times(ptr) (dprof_times(aTHX_ ptr))
+#    define NEEDS_DPROF_TIMES
+#    define HZ 1000000
+#    define DPROF_HZ HZ
+#  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 NEEDS_DPROF_TIMES
+#      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
+#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 */
+        const char *name;
+        U32 id;
+        opcode ptype;
+};
+
+typedef union prof_any PROFANY;
+
+typedef struct {
+    U32		dprof_ticks;
+    const char*	out_file_name;	/* output file (defaults to tmon.out) */
+    PerlIO*	fp;		/* pointer to tmon.out file */
+    Off_t	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;	/* cache of CV to identifier mappings */
+    SV*		key_hash;	/* key for cv_hash */
+    U32		total;
+    U32		lastid;
+    U32		default_perldb;
+    UV		depth;
+#ifdef OS2
+    ULONG	frequ;
+    long long	start_cnt;
+#endif
+#ifdef PERL_IMPLICIT_CONTEXT
+    PerlInterpreter *my_perl;
+#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_key_hash		g_prof_state.key_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.my_perl
+#endif
+#ifdef OS2
+#  define g_frequ		g_prof_state.frequ
+#  define g_start_cnt		g_prof_state.start_cnt
+#endif
+
+#ifdef NEEDS_DPROF_TIMES
+static clock_t
+dprof_times(pTHX_ struct tms *t)
+{
+#ifdef OS2
+    ULONG rc;
+    QWORD cnt;
+    
+    if (!g_frequ) {
+	if (CheckOSError(DosTmrQueryFreq(&g_frequ)))
+	    croak("DosTmrQueryFreq: %s", SvPV_nolen(perl_get_sv("!",GV_ADD)));
+	else
+	    g_frequ = g_frequ/DPROF_HZ;	/* count per tick */
+	if (CheckOSError(DosTmrQueryTime(&cnt)))
+	    croak("DosTmrQueryTime: %s",
+		  SvPV_nolen_const(perl_get_sv("!",GV_ADD)));
+	g_start_cnt = toLongLong(cnt);
+    }
+
+    if (CheckOSError(DosTmrQueryTime(&cnt)))
+	    croak("DosTmrQueryTime: %s", SvPV_nolen(perl_get_sv("!",GV_ADD)));
+    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 */
+#    ifdef BSDish
+#      include <sys/resource.h>
+    struct rusage ru;
+    struct timeval tv;
+    /* Measure offset from start time to avoid overflow  */
+    static struct timeval tv0 = { 0, 0 };
+
+    if (!tv0.tv_sec)
+        if (gettimeofday(&tv0, NULL) < 0)
+            croak("gettimeofday: %s", SvPV_nolen_const(perl_get_sv("!",GV_ADD)));
+    
+    if (getrusage(0, &ru) < 0)
+        croak("getrusage: %s", SvPV_nolen_const(perl_get_sv("!",GV_ADD)));
+
+    if (gettimeofday(&tv, NULL) < 0)
+        croak("gettimeofday: %s", SvPV_nolen_const(perl_get_sv("!",GV_ADD)));
+
+    t->tms_stime = DPROF_HZ * ru.ru_stime.tv_sec + ru.ru_stime.tv_usec;
+    t->tms_utime = DPROF_HZ * ru.ru_utime.tv_sec + ru.ru_utime.tv_usec;
+
+    if (tv.tv_usec < tv0.tv_usec)
+        tv.tv_sec--, tv.tv_usec += DPROF_HZ;
+
+    return DPROF_HZ * (tv.tv_sec - tv0.tv_sec) + tv.tv_usec - tv0.tv_usec;
+#    else  /* !VMS && !OS2 && !BSD! */
+    return times(t);
+#    endif
+#  endif
+#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, const char *pname, const 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 realtime2;
+
+    const clock_t realtime1 = Times(&t1);
+
+    while (base < ix) {
+	const opcode ptype = g_profstack[base++].ptype;
+	if (ptype == OP_TIME) {
+	    const long tms_utime = g_profstack[base++].tms_utime;
+	    const long tms_stime = g_profstack[base++].tms_stime;
+	    const long realtime = g_profstack[base++].realtime;
+
+	    prof_dumpt(aTHX_ tms_utime, tms_stime, realtime);
+	}
+	else if (ptype == OP_GV) {
+	    const U32 id = g_profstack[base++].id;
+	    const char * const pname = g_profstack[base++].name;
+	    const char * const gname = g_profstack[base++].name;
+
+	    prof_dumps(aTHX_ id, pname, gname);
+	}
+	else {
+	    const 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
+set_cv_key(pTHX_ CV *cv, const char *pname, const char *gname)
+{
+	SvGROW(g_key_hash, sizeof(CV**) + strlen(pname) + strlen(gname) + 3);
+	sv_setpvn(g_key_hash, (char*)&cv, sizeof(CV**));
+	sv_catpv(g_key_hash, pname);
+	sv_catpv(g_key_hash, "::");
+	sv_catpv(g_key_hash, gname);
+}
+
+static void
+prof_mark(pTHX_ opcode ptype)
+{
+    struct tms t;
+    clock_t realtime, rdelta, udelta, sdelta;
+    U32 id;
+    SV * const Sub = GvSV(PL_DBsub);	/* name of current sub */
+
+    if (g_SAVE_STACK) {
+	if (g_profstack_ix + 10 > 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) {
+	    ASSERT(g_profstack_ix + 4 <= g_profstack_max);
+	    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 * const cv = db_get_cv(aTHX_ Sub);
+	GV * const gv = CvGV(cv);
+	if (isGV_with_GP(gv)) {
+	    pname = GvSTASH(gv) ? HvNAME_get(GvSTASH(gv)) : NULL;
+	    pname = pname ? pname : (char *) "(null)";
+	    gname = GvNAME(gv);
+	} else {
+	    gname = pname = (char *) "(null)";
+	}
+
+	set_cv_key(aTHX_ cv, pname, gname);
+	svp = hv_fetch(g_cv_hash, SvPVX_const(g_key_hash), SvCUR(g_key_hash), TRUE);
+	if (!SvOK(*svp)) {
+	    sv_setiv(*svp, id = ++g_lastid);
+	    if (CvXSUB(cv) == XS_Devel__DProf_END)
+		return;
+	    if (g_SAVE_STACK) { /* Store it for later recording  -JH */
+		ASSERT(g_profstack_ix + 4 <= g_profstack_max);
+		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 */
+	ASSERT(g_profstack_ix + 2 <= g_profstack_max);
+	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. */
+    }
+}
+
+/* Counts overhead of prof_mark and extra XS call. */
+static void
+test_time(pTHX_ clock_t *r, clock_t *u, clock_t *s)
+{
+    CV * const cv = get_cvs("Devel::DProf::NONESUCH_noxs", 0);
+    HV * const oldstash = PL_curstash;
+    struct tms t1, t2;
+    const U32 ototal = g_total;
+    const U32 ostack = g_SAVE_STACK;
+    const U32 operldb = PL_perldb;
+    int k = 0;
+
+    clock_t realtime1 = Times(&t1);
+    clock_t realtime2 = 0;
+
+    g_SAVE_STACK = 1000000;
+
+    while (k < 2) {
+	int 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) {
+	    int 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 */
+
+    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)
+{
+    const U32 need_depth = PTR2UV(foo);
+    if (need_depth != g_depth) {
+	if (need_depth > g_depth) {
+	    warn("garbled call depth when profiling");
+	}
+	else {
+	    IV 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);
+XS(XS_DB_sub)
+{
+    dMARK;
+    dORIGMARK;
+    SV * const 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((SV*)db_get_cv(aTHX_ Sub), GIMME_V | G_NODEBUG);
+    }
+    else
+#endif
+    {
+	HV * const oldstash = PL_curstash;
+	const I32 old_scopestack_ix = PL_scopestack_ix;
+	const I32 old_cxstack_ix = cxstack_ix;
+
+        DBG_SUB_NOTIFY(Sub);
+
+	SAVEDESTRUCTOR_X(check_depth, INT2PTR(void*,g_depth));
+	g_depth++;
+
+        prof_mark(aTHX_ OP_ENTERSUB);
+        PUSHMARK(ORIGMARK);
+        perl_call_sv((SV*)db_get_cv(aTHX_ Sub), GIMME_V | G_NODEBUG);
+        PL_curstash = oldstash;
+
+	/* Make sure we are on the same context and scope as before the call
+	 * to the sub. If the called sub was exited via a goto, next or
+	 * last then this will try to croak(), however perl may still crash
+	 * with a segfault. */
+	if (PL_scopestack_ix != old_scopestack_ix || cxstack_ix != old_cxstack_ix)
+	    croak("panic: Devel::DProf inconsistent subroutine return");
+
+        prof_mark(aTHX_ OP_LEAVESUB);
+	g_depth--;
+    }
+    return;
+}
+
+XS(XS_DB_goto);
+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 * const oldstash = PL_curstash;
+		SV * const Sub = GvSV(PL_DBsub);	/* name of current sub */
+                /* SP -= items;  added by xsubpp */
+                DBG_SUB_NOTIFY(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_V);
+                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.
+         */
+        {
+	    const bool 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 */
+
+	{
+	    const 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_key_hash = newSV(256);
+        g_prof_pid = (int)getpid();
+
+	Newx(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/ext/Devel-DProf/Makefile.PL b/ext/Devel-DProf/Makefile.PL
new file mode 100644
index 0000000000..5d975eabef
--- /dev/null
+++ b/ext/Devel-DProf/Makefile.PL
@@ -0,0 +1,19 @@
+BEGIN {
+	require 5.006;
+}
+
+use ExtUtils::MakeMaker;
+
+WriteMakefile(
+	NAME		=> 'Devel::DProf',
+	DISTNAME	=> 'DProf',
+	VERSION_FROM	=> 'DProf.pm',
+	clean		=> { 'FILES' => 'tmon.out t/tmon.out t/err'},
+	XSPROTOARG	=> '-noprototypes',
+	dist		=> {
+			     COMPRESS => 'gzip -9f',
+			     SUFFIX => 'gz',
+			     DIST_DEFAULT => 'all tardist',
+			   },
+	MAN3PODS	=> {},
+);
diff --git a/ext/Devel-DProf/Todo b/ext/Devel-DProf/Todo
new file mode 100644
index 0000000000..0e003471d6
--- /dev/null
+++ b/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;
diff --git a/ext/Devel-DProf/t/DProf.t b/ext/Devel-DProf/t/DProf.t
new file mode 100644
index 0000000000..afffaeaaa4
--- /dev/null
+++ b/ext/Devel-DProf/t/DProf.t
@@ -0,0 +1,89 @@
+#!perl
+
+BEGIN {
+    chdir( 't' ) if -d 't';
+    @INC = '../lib';
+    require './test.pl';      # for which_perl() etc
+    require Config; import Config;
+    if ($Config{'extensions'} !~ /\bDevel\/DProf\b/){
+      print "1..0 # Skip: Devel::DProf was not built\n";
+      exit 0;
+    }
+}
+
+END {
+    while(-e 'tmon.out' && unlink 'tmon.out') {}
+    while(-e 'err' && unlink 'err') {}
+}
+
+use Benchmark qw( timediff timestr );
+use Getopt::Std 'getopts';
+getopts('vI:p:');
+
+# -v   Verbose
+# -I   Add to @INC
+# -p   Name of perl binary
+
+@tests = @ARGV ? @ARGV : sort (<lib/dprof/*_t>, <lib/dprof/*_v>);  # glob-sort, for OS/2
+
+$path_sep = $Config{path_sep} || ':';
+$perl5lib = $opt_I || join( $path_sep, @INC );
+$perl = $opt_p || which_perl();
+
+if( $opt_v ){
+	print "tests: @tests\n";
+	print "perl: $perl\n";
+	print "perl5lib: $perl5lib\n";
+}
+if( $perl =~ m|^\./| ){
+	# turn ./perl into ../perl, because of chdir(t) above.
+	$perl = ".$perl";
+}
+if( ! -f $perl ){ die "Where's Perl?" }
+
+sub profile {
+	my $test = shift;
+	my @results;
+	local $ENV{PERL5LIB} = $perl5lib;
+	my $opt_d = '-d:DProf';
+
+	my $t_start = new Benchmark;
+	open( R, "$perl -f \"$opt_d\" $test |" ) || warn "$0: Can't run. $!\n";
+	@results = <R>;
+	close R or warn "Could not close: $!";
+	my $t_total = timediff( new Benchmark, $t_start );
+
+	if( $opt_v ){
+		print "\n";
+		print @results
+	}
+
+        print '# ' . timestr( $t_total, 'nop' ), "\n";
+}
+
+
+sub verify {
+	my $test = shift;
+
+	my $command = $perl.' "-I../lib" "-I./lib/dprof" '.$test;
+	$command .= ' -v' if $opt_v;
+	$command .= ' -p '. $perl;
+	system $command;
+}
+
+
+$| = 1;
+print "1..20\n";
+while( @tests ){
+	$test = shift @tests;
+	$test =~ s/\.$// if $^O eq 'VMS';
+	if( $test =~ /_t$/i ){
+		print "# $test" . '.' x (20 - length $test);
+		profile $test;
+	}
+	else{
+		verify $test;
+	}
+}
+
+unlink("tmon.out");