|
Server IP : 172.16.15.8 / Your IP : 3.21.46.68 Web Server : Apache System : Linux zeus.vwu.edu 4.18.0-553.27.1.el8_10.x86_64 #1 SMP Wed Nov 6 14:29:02 UTC 2024 x86_64 User : apache ( 48) PHP Version : 7.2.24 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON Directory (0555) : /bin/ |
| [ Home ] | [ C0mmand ] | [ Upload File ] |
|---|
#!/usr/bin/perl
##--------------------------------------------------------------------##
##--- The cache simulation framework: instrumentation, recording ---##
##--- and results printing. ---##
##--- callgrind_annotate ---##
##--------------------------------------------------------------------##
# This file is part of Callgrind, a cache-simulator and call graph
# tracer built on Valgrind.
#
# Copyright (C) 2003-2017 Josef Weidendorfer
# Josef.Weidendorfer@gmx.de
#
# This file is based heavily on cg_annotate, part of Valgrind.
# Copyright (C) 2002-2017 Nicholas Nethercote
# njn@valgrind.org
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <http://www.gnu.org/licenses/>.
#
# The GNU General Public License is contained in the file COPYING.
#----------------------------------------------------------------------------
# Annotator for cachegrind/callgrind.
#
# File format is described in /docs/techdocs.html.
#
# Performance improvements record, using cachegrind.out for cacheprof, doing no
# source annotation (irrelevant ones removed):
# user time
# 1. turned off warnings in add_hash_a_to_b() 3.81 --> 3.48s
# [now add_array_a_to_b()]
# 6. make line_to_CC() return a ref instead of a hash 3.01 --> 2.77s
#
#10. changed file format to avoid file/fn name repetition 2.40s
# (not sure why higher; maybe due to new '.' entries?)
#11. changed file format to drop unnecessary end-line "."s 2.36s
# (shrunk file by about 37%)
#12. switched from hash CCs to array CCs 1.61s
#13. only adding b[i] to a[i] if b[i] defined (was doing it if
# either a[i] or b[i] was defined, but if b[i] was undefined
# it just added 0) 1.48s
#14. Stopped converting "." entries to undef and then back 1.16s
#15. Using foreach $i (x..y) instead of for ($i = 0...) in
# add_array_a_to_b() 1.11s
#
# Auto-annotating primes:
#16. Finding count lengths by int((length-1)/3), not by
# commifying (halves the number of commify calls) 1.68s --> 1.47s
use strict;
use warnings;
#----------------------------------------------------------------------------
# Overview: the running example in the comments is for:
# - events = A,B,C,D
# - --show=C,A,D
# - --sort=D,C
#----------------------------------------------------------------------------
#----------------------------------------------------------------------------
# Global variables, main data structures
#----------------------------------------------------------------------------
# CCs are arrays, the counts corresponding to @events, with 'undef'
# representing '.'. This makes things fast (faster than using hashes for CCs)
# but we have to use @sort_order and @show_order below to handle the --sort and
# --show options, which is a bit tricky.
#----------------------------------------------------------------------------
# Total counts for summary (an array reference).
my $summary_CC;
my $totals_CC;
my $summary_calculated = 0;
# Totals for each function, for overall summary.
# hash(filename:fn_name => CC array)
my %fn_totals;
# Individual CCs, organised by filename and line_num for easy annotation.
# hash(filename => hash(line_num => CC array))
my %all_ind_CCs;
# Files chosen for annotation on the command line.
# key = basename (trimmed of any directory), value = full filename
my %user_ann_files;
# Generic description string.
my $desc = "";
# Command line of profiled program.
my $cmd = "";
# Info on the profiled process.
my $creator = "";
my $pid = "";
my $part = "";
my $thread = "";
# Positions used for cost lines; default: line numbers
my $has_line = 1;
my $has_addr = 0;
# Events in input file, eg. (A,B,C,D)
my @events;
my $events;
# Events to show, from command line, eg. (C,A,D)
my @show_events;
# Map from @show_events indices to @events indices, eg. (2,0,3). Gives the
# order in which we must traverse @events in order to show the @show_events,
# eg. (@events[$show_order[1]], @events[$show_order[2]]...) = @show_events.
# (Might help to think of it like a hash (0 => 2, 1 => 0, 2 => 3).)
my @show_order;
# Print out the function totals sorted by these events, eg. (D,C).
my @sort_events;
# Map from @sort_events indices to @events indices, eg. (3,2). Same idea as
# for @show_order.
my @sort_order;
# Thresholds, one for each sort event (or default to 1 if no sort events
# specified). We print out functions and do auto-annotations until we've
# handled this proportion of all the events thresholded.
my @thresholds;
my $default_threshold = 99;
my $single_threshold = $default_threshold;
# If on, show a percentage for each non-zero count.
my $show_percs = 1;
# If on, automatically annotates all files that are involved in getting over
# all the threshold counts.
my $auto_annotate = 1;
# Number of lines to show around each annotated line.
my $context = 8;
# Directories in which to look for annotation files.
my @include_dirs = ("");
# Verbose mode
my $verbose = "1";
# Inclusive statistics (with subroutine events)
my $inclusive = 0;
# Inclusive totals for each function, for overall summary.
# hash(filename:fn_name => CC array)
my %cfn_totals;
# hash( file:func => [ called file:func ])
my $called_funcs;
# hash( file:func => [ calling file:func ])
my $calling_funcs;
# hash( file:func,line => [called file:func ])
my $called_from_line;
# hash( file:func,line => file:func
my %func_of_line;
# hash (file:func => object name)
my %obj_name;
# Print out the callers of a function
my $tree_caller = 0;
# Print out the called functions
my $tree_calling = 0;
# hash( file:func,cfile:cfunc => call CC[])
my %call_CCs;
# hash( file:func,cfile:cfunc => call counter)
my %call_counter;
# hash(context, index) => realname for compressed traces
my %compressed;
# Input file name, will be set in process_cmd_line
my $input_file = "";
# Version number
my $version = "3.22.0";
# Usage message.
my $usage = <<END
usage: callgrind_annotate [options] [callgrind-out-file [source-files...]]
options for the user, with defaults in [ ], are:
-h --help show this message
--version show version
--show=A,B,C only show figures for events A,B,C [all]
--threshold=<0--100> percentage of counts (of primary sort event) we
are interested in [$default_threshold%]
--sort=A,B,C sort columns by events A,B,C [event column order]
Each event can optionally be followed by a :
and a threshold percentage. If some event specific
threshold are given, --threshold value is ignored.
--show-percs=yes|no show a percentage for each non-zero count [yes]
--auto=yes|no annotate all source files containing functions
that helped reach the event count threshold [yes]
--context=N print N lines of context before and after
annotated lines [8]
--inclusive=yes|no add subroutine costs to functions calls [no]
--tree=none|caller| print for each function their callers,
calling|both the called functions or both [none]
-I --include=<dir> add <dir> to list of directories to search for
source files
END
;
# Used in various places of output.
my $fancy = '-' x 80 . "\n";
sub safe_div($$)
{
my ($x, $y) = @_;
return ($y == 0 ? 0 : $x / $y);
}
#-----------------------------------------------------------------------------
# Argument and option handling
#-----------------------------------------------------------------------------
sub process_cmd_line()
{
for my $arg (@ARGV) {
# Option handling
if ($arg =~ /^-/) {
# --version
if ($arg =~ /^--version$/) {
die("callgrind_annotate-$version\n");
# --show=A,B,C
} elsif ($arg =~ /^--show=(.*)$/) {
@show_events = split(/,/, $1);
# --sort=A,B,C
} elsif ($arg =~ /^--sort=(.*)$/) {
@sort_events = split(/,/, $1);
my $th_specified = 0;
foreach my $i (0 .. scalar @sort_events - 1) {
if ($sort_events[$i] =~ /.*:([\d\.]+)%?$/) {
my $th = $1;
($th >= 0 && $th <= 100) or die($usage);
$sort_events[$i] =~ s/:.*//;
$thresholds[$i] = $th;
$th_specified = 1;
} else {
$thresholds[$i] = 0;
}
}
if (not $th_specified) {
@thresholds = ();
}
# --threshold=X (tolerates a trailing '%')
} elsif ($arg =~ /^--threshold=([\d\.]+)%?$/) {
$single_threshold = $1;
($1 >= 0 && $1 <= 100) or die($usage);
# --show-percs=yes|no
} elsif ($arg =~ /^--show-percs=yes$/) {
$show_percs = 1;
} elsif ($arg =~ /^--show-percs=no$/) {
$show_percs = 0;
# --auto=yes|no
} elsif ($arg =~ /^--auto=(yes|no)$/) {
$auto_annotate = 1 if ($1 eq "yes");
$auto_annotate = 0 if ($1 eq "no");
# --context=N
} elsif ($arg =~ /^--context=([\d\.]+)$/) {
$context = $1;
if ($context < 0) {
die($usage);
}
# --inclusive=yes|no
} elsif ($arg =~ /^--inclusive=(yes|no)$/) {
$inclusive = 1 if ($1 eq "yes");
$inclusive = 0 if ($1 eq "no");
# --tree=none|caller|calling|both
} elsif ($arg =~ /^--tree=(none|caller|calling|both)$/) {
$tree_caller = 1 if ($1 eq "caller" || $1 eq "both");
$tree_calling = 1 if ($1 eq "calling" || $1 eq "both");
# --include=A,B,C
} elsif ($arg =~ /^(-I|--include)=(.*)$/) {
my $inc = $2;
$inc =~ s|/$||; # trim trailing '/'
push(@include_dirs, "$inc/");
} else { # -h and --help fall under this case
die($usage);
}
# Argument handling -- annotation file checking and selection.
# Stick filenames into a hash for quick 'n easy lookup throughout
} else {
if ($input_file eq "") {
$input_file = $arg;
}
else {
my $readable = 0;
foreach my $include_dir (@include_dirs) {
if (-r $include_dir . $arg) {
$readable = 1;
}
}
$readable or die("File $arg not found in any of: @include_dirs\n");
$user_ann_files{$arg} = 1;
}
}
}
if ($input_file eq "") {
$input_file = (<callgrind.out*>)[0];
if (!defined $input_file) {
$input_file = (<cachegrind.out*>)[0];
}
(defined $input_file) or die($usage);
print "Reading data from '$input_file'...\n";
}
}
#-----------------------------------------------------------------------------
# Reading of input file
#-----------------------------------------------------------------------------
sub max ($$)
{
my ($x, $y) = @_;
return ($x > $y ? $x : $y);
}
# Add the two arrays; any '.' entries are ignored. Two tricky things:
# 1. If $a2->[$i] is undefined, it defaults to 0 which is what we want; we turn
# off warnings to allow this. This makes things about 10% faster than
# checking for definedness ourselves.
# 2. We don't add an undefined count or a ".", even though it's value is 0,
# because we don't want to make an $a2->[$i] that is undef become 0
# unnecessarily.
sub add_array_a_to_b ($$)
{
my ($a1, $a2) = @_;
my $n = max(scalar @$a1, scalar @$a2);
$^W = 0;
foreach my $i (0 .. $n-1) {
$a2->[$i] += $a1->[$i] if (defined $a1->[$i] && "." ne $a1->[$i]);
}
$^W = 1;
}
# Is this a line with all events zero?
sub is_zero ($)
{
my ($CC) = @_;
my $isZero = 1;
foreach my $i (0 .. (scalar @$CC)-1) {
$isZero = 0 if ($CC->[$i] >0);
}
return $isZero;
}
# Add each event count to the CC array. '.' counts become undef, as do
# missing entries (implicitly).
sub line_to_CC ($)
{
my @CC = (split /\s+/, $_[0]);
(@CC <= @events) or die("Line $.: too many event counts\n");
return \@CC;
}
sub uncompressed_name($$)
{
my ($context, $name) = @_;
if ($name =~ /^\((\d+)\)\s*(.*)$/) {
my $index = $1;
my $realname = $2;
if ($realname eq "") {
$realname = $compressed{$context,$index};
}
else {
$compressed{$context,$index} = $realname;
}
return $realname;
}
return $name;
}
sub read_input_file()
{
open(INPUTFILE, "< $input_file") || die "File $input_file not opened\n";
my $line;
# Read header
while(<INPUTFILE>) {
# Skip comments and empty lines.
if (/^\s*$/ || /^\#/) { ; }
elsif (/^version:\s*(\d+)/) {
# Can't read format with major version > 1
($1<2) or die("Can't read format with major version $1.\n");
}
elsif (/^pid:\s+(.*)$/) { $pid = $1; }
elsif (/^thread:\s+(.*)$/) { $thread = $1; }
elsif (/^part:\s+(.*)$/) { $part = $1; }
elsif (/^desc:\s+(.*)$/) {
my $dline = $1;
# suppress profile options in description output
if ($dline =~ /^Option:/) {;}
else { $desc .= "$dline\n"; }
}
elsif (/^cmd:\s+(.*)$/) { $cmd = $1; }
elsif (/^creator:\s+(.*)$/) { $creator = $1; }
elsif (/^positions:\s+(.*)$/) {
my $positions = $1;
$has_line = ($positions =~ /line/);
$has_addr = ($positions =~ /(addr|instr)/);
}
elsif (/^event:\s+.*$/) {
# ignore lines giving a long name to an event
}
elsif (/^events:\s+(.*)$/) {
$events = $1;
# events line is last in header
last;
}
else {
warn("WARNING: header line $. malformed, ignoring\n");
if ($verbose) { chomp; warn(" line: '$_'\n"); }
}
}
# Read "events:" line. We make a temporary hash in which the Nth event's
# value is N, which is useful for handling --show/--sort options below.
($events ne "") or die("Line $.: missing events line\n");
@events = split(/\s+/, $events);
my %events;
my $n = 0;
foreach my $event (@events) {
$events{$event} = $n;
$n++
}
# If no --show arg give, default to showing all events in the file.
# If --show option is used, check all specified events appeared in the
# "events:" line. Then initialise @show_order.
if (@show_events) {
foreach my $show_event (@show_events) {
(defined $events{$show_event}) or
die("--show event `$show_event' did not appear in input\n");
}
} else {
@show_events = @events;
}
foreach my $show_event (@show_events) {
push(@show_order, $events{$show_event});
}
# Do as for --show, but if no --sort arg given, default to sorting by
# column order (ie. first column event is primary sort key, 2nd column is
# 2ndary key, etc).
if (@sort_events) {
foreach my $sort_event (@sort_events) {
(defined $events{$sort_event}) or
die("--sort event `$sort_event' did not appear in input\n");
}
} else {
@sort_events = @events;
}
foreach my $sort_event (@sort_events) {
push(@sort_order, $events{$sort_event});
}
# If multiple threshold args weren't given via --sort, stick in the single
# threshold (either from --threshold if used, or the default otherwise) for
# the primary sort event, and 0% for the rest.
if (not @thresholds) {
foreach my $e (@sort_order) {
push(@thresholds, 0);
}
$thresholds[0] = $single_threshold;
} else {
# setting $single_threshold to 0 to ensure the 'per event'
# threshold logic is used.
$single_threshold = 0;
}
# Current directory, used to strip from file names if absolute
my $pwd = `pwd`;
chomp $pwd;
$pwd .= '/';
my $curr_obj = "";
my $curr_file;
my $curr_fn;
my $curr_name;
my $curr_line_num = 0;
my $prev_line_num = 0;
my $curr_cobj = "";
my $curr_cfile = "";
my $curr_cfunc = "";
my $curr_cname;
my $curr_call_counter = 0;
my $curr_cfn_CC = [];
my $curr_fn_CC = [];
my $curr_file_ind_CCs = {}; # hash(line_num => CC)
# Read body of input file.
while (<INPUTFILE>) {
# Skip comments and empty lines.
next if /^\s*$/ || /^\#/;
$prev_line_num = $curr_line_num;
s/^\+(\d+)/$prev_line_num+$1/e;
s/^\-(\d+)/$prev_line_num-$1/e;
s/^\*/$prev_line_num/e;
if (s/^(-?\d+|0x\w+)\s+//) {
$curr_line_num = $1;
if ($has_addr) {
if ($has_line) {
s/^\+(\d+)/$prev_line_num+$1/e;
s/^\-(\d+)/$prev_line_num-$1/e;
s/^\*/$prev_line_num/e;
if (s/^(\d+)\s+//) { $curr_line_num = $1; }
}
else { $curr_line_num = 0; }
}
my $CC = line_to_CC($_);
if ($curr_call_counter>0) {
# print "Read ($curr_name => $curr_cname) $curr_call_counter\n";
if (!defined $call_CCs{$curr_name,$curr_cname}) {
$call_CCs{$curr_name,$curr_cname} = [];
$call_counter{$curr_name,$curr_cname} = 0;
}
add_array_a_to_b($CC, $call_CCs{$curr_name,$curr_cname});
$call_counter{$curr_name,$curr_cname} += $curr_call_counter;
my $tmp = $called_from_line->{$curr_file,$curr_line_num};
if (!defined $tmp) {
$func_of_line{$curr_file,$curr_line_num} = $curr_name;
}
$tmp = {} unless defined $tmp;
$$tmp{$curr_cname} = 1;
$called_from_line->{$curr_file,$curr_line_num} = $tmp;
if (!defined $call_CCs{$curr_name,$curr_cname,$curr_line_num}) {
$call_CCs{$curr_name,$curr_cname,$curr_line_num} = [];
$call_counter{$curr_name,$curr_cname,$curr_line_num} = 0;
}
add_array_a_to_b($CC, $call_CCs{$curr_name,$curr_cname,$curr_line_num});
$call_counter{$curr_name,$curr_cname,$curr_line_num} += $curr_call_counter;
$curr_call_counter = 0;
# inclusive costs
$curr_cfn_CC = $cfn_totals{$curr_cname};
$curr_cfn_CC = [] unless (defined $curr_cfn_CC);
add_array_a_to_b($CC, $curr_cfn_CC);
$cfn_totals{$curr_cname} = $curr_cfn_CC;
if ($inclusive) {
add_array_a_to_b($CC, $curr_fn_CC);
}
next;
}
add_array_a_to_b($CC, $curr_fn_CC);
# If curr_file is selected, add CC to curr_file list. We look for
# full filename matches; or, if auto-annotating, we have to
# remember everything -- we won't know until the end what's needed.
if ($auto_annotate || defined $user_ann_files{$curr_file}) {
my $tmp = $curr_file_ind_CCs->{$curr_line_num};
$tmp = [] unless defined $tmp;
add_array_a_to_b($CC, $tmp);
$curr_file_ind_CCs->{$curr_line_num} = $tmp;
}
} elsif (s/^fn=(.*)$//) {
# Commit result from previous function
$fn_totals{$curr_name} = $curr_fn_CC if (defined $curr_name);
# Setup new one
$curr_fn = uncompressed_name("fn",$1);
$curr_name = "$curr_file:$curr_fn";
$obj_name{$curr_name} = $curr_obj;
$curr_fn_CC = $fn_totals{$curr_name};
$curr_fn_CC = [] unless (defined $curr_fn_CC);
} elsif (s/^ob=(.*)$//) {
$curr_obj = uncompressed_name("ob",$1);
} elsif (s/^fl=(.*)$//) {
$all_ind_CCs{$curr_file} = $curr_file_ind_CCs
if (defined $curr_file);
$curr_file = uncompressed_name("fl",$1);
$curr_file =~ s/^\Q$pwd\E//;
$curr_file_ind_CCs = $all_ind_CCs{$curr_file};
$curr_file_ind_CCs = {} unless (defined $curr_file_ind_CCs);
} elsif (s/^(fi|fe)=(.*)$//) {
(defined $curr_name) or die("Line $.: Unexpected fi/fe line\n");
$fn_totals{$curr_name} = $curr_fn_CC;
$all_ind_CCs{$curr_file} = $curr_file_ind_CCs;
$curr_file = uncompressed_name("fl",$2);
$curr_file =~ s/^\Q$pwd\E//;
$curr_name = "$curr_file:$curr_fn";
$curr_file_ind_CCs = $all_ind_CCs{$curr_file};
$curr_file_ind_CCs = {} unless (defined $curr_file_ind_CCs);
$curr_fn_CC = $fn_totals{$curr_name};
$curr_fn_CC = [] unless (defined $curr_fn_CC);
} elsif (s/^cob=(.*)$//) {
$curr_cobj = uncompressed_name("ob",$1);
} elsif (s/^cf[il]=(.*)$//) {
$curr_cfile = uncompressed_name("fl",$1);
} elsif (s/^cfn=(.*)$//) {
$curr_cfunc = uncompressed_name("fn",$1);
if ($curr_cfile eq "") {
$curr_cname = "$curr_file:$curr_cfunc";
}
else {
$curr_cname = "$curr_cfile:$curr_cfunc";
$curr_cfile = "";
}
my $tmp = $calling_funcs->{$curr_cname};
$tmp = {} unless defined $tmp;
$$tmp{$curr_name} = 1;
$calling_funcs->{$curr_cname} = $tmp;
my $tmp2 = $called_funcs->{$curr_name};
$tmp2 = {} unless defined $tmp2;
$$tmp2{$curr_cname} = 1;
$called_funcs->{$curr_name} = $tmp2;
} elsif (s/^calls=(\d+)//) {
$curr_call_counter = $1;
} elsif (s/^(jump|jcnd)=//) {
#ignore jump information
} elsif (s/^jfi=(.*)$//) {
# side effect needed: possibly add compression mapping
uncompressed_name("fl",$1);
# ignore jump information
} elsif (s/^jfn=(.*)$//) {
# side effect needed: possibly add compression mapping
uncompressed_name("fn",$1);
# ignore jump information
} elsif (s/^totals:\s+//) {
$totals_CC = line_to_CC($_);
} elsif (s/^summary:\s+//) {
$summary_CC = line_to_CC($_);
} else {
warn("WARNING: line $. malformed, ignoring\n");
if ($verbose) { chomp; warn(" line: '$_'\n"); }
}
}
# Finish up handling final filename/fn_name counts
$fn_totals{"$curr_file:$curr_fn"} = $curr_fn_CC
if (defined $curr_file && defined $curr_fn);
$all_ind_CCs{$curr_file} =
$curr_file_ind_CCs if (defined $curr_file);
# Correct inclusive totals
if ($inclusive) {
foreach my $name (keys %cfn_totals) {
$fn_totals{$name} = $cfn_totals{$name};
}
}
close(INPUTFILE);
if ((not defined $summary_CC) || is_zero($summary_CC)) {
$summary_CC = $totals_CC;
# if neither 'summary:' nor 'totals:' line is given,
# calculate summary from fn_totals hash
if ((not defined $summary_CC) || is_zero($summary_CC)) {
$summary_calculated = 1;
$summary_CC = [];
foreach my $name (keys %fn_totals) {
add_array_a_to_b($fn_totals{$name}, $summary_CC);
}
}
}
}
#-----------------------------------------------------------------------------
# Print options used
#-----------------------------------------------------------------------------
sub print_options ()
{
print($fancy);
print "Profile data file '$input_file'";
if ($creator ne "") { print " (creator: $creator)"; }
print "\n";
print($fancy);
print($desc);
my $target = $cmd;
if ($target eq "") { $target = "(unknown)"; }
if ($pid ne "") {
$target .= " (PID $pid";
if ($part ne "") { $target .= ", part $part"; }
if ($thread ne "") { $target .= ", thread $thread"; }
$target .= ")";
}
print("Profiled target: $target\n");
print("Events recorded: @events\n");
print("Events shown: @show_events\n");
print("Event sort order: @sort_events\n");
print("Thresholds: @thresholds\n");
my @include_dirs2 = @include_dirs; # copy @include_dirs
shift(@include_dirs2); # remove "" entry, which is always the first
unshift(@include_dirs2, "") if (0 == @include_dirs2);
my $include_dir = shift(@include_dirs2);
print("Include dirs: $include_dir\n");
foreach my $include_dir (@include_dirs2) {
print(" $include_dir\n");
}
my @user_ann_files = keys %user_ann_files;
unshift(@user_ann_files, "") if (0 == @user_ann_files);
my $user_ann_file = shift(@user_ann_files);
print("User annotated: $user_ann_file\n");
foreach $user_ann_file (@user_ann_files) {
print(" $user_ann_file\n");
}
my $is_on = ($auto_annotate ? "on" : "off");
print("Auto-annotation: $is_on\n");
print("\n");
}
#-----------------------------------------------------------------------------
# Print summary and sorted function totals
#-----------------------------------------------------------------------------
sub mycmp ($$)
{
my ($c, $d) = @_;
# Iterate through sort events (eg. 3,2); return result if two are different
foreach my $i (@sort_order) {
my ($x, $y);
$x = $c->[$i];
$y = $d->[$i];
$x = -1 unless defined $x;
$y = -1 unless defined $y;
my $cmp = $y <=> $x; # reverse sort
if (0 != $cmp) {
return $cmp;
}
}
# Exhausted events, equal
return 0;
}
sub commify ($) {
my ($val) = @_;
1 while ($val =~ s/^(\d+)(\d{3})/$1,$2/);
return $val;
}
# Because the counts can get very big, and we don't want to waste screen space
# and make lines too long, we compute exactly how wide each column needs to be
# by finding the widest entry for each one.
sub compute_CC_col_widths (@)
{
my @CCs = @_;
my $CC_col_widths = [];
# Initialise with minimum widths (from event names)
foreach my $event (@events) {
push(@$CC_col_widths, length($event));
}
# Find maximum width count for each column. @CC_col_width positions
# correspond to @CC positions.
foreach my $CC (@CCs) {
foreach my $i (0 .. scalar(@$CC)-1) {
if (defined $CC->[$i]) {
# Find length, accounting for commas that will be added, and
# possibly a percentage.
my $length = length $CC->[$i];
my $width = $length + int(($length - 1) / 3);
if ($show_percs) {
$width += 9; # e.g. " (12.34%)" is 9 chars
}
$CC_col_widths->[$i] = max($CC_col_widths->[$i], $width);
}
}
}
return $CC_col_widths;
}
# Print the CC with each column's size dictated by $CC_col_widths.
sub print_CC ($$)
{
my ($CC, $CC_col_widths) = @_;
foreach my $i (@show_order) {
my $count = (defined $CC->[$i] ? commify($CC->[$i]) : ".");
my $perc = "";
if ($show_percs) {
if (defined $CC->[$i] && $CC->[$i] != 0) {
# Try our best to keep the number fitting into 5 chars. This
# requires dropping a digit after the decimal place if it's
# sufficiently negative (e.g. "-10.0") or positive (e.g.
# "100.0"). Thanks to diffs it's possible to have even more
# extreme values, like "-100.0" or "1000.0"; those rare case
# will end up with slightly wrong indenting, oh well.
$perc = safe_div($CC->[$i] * 100, $summary_CC->[$i]);
$perc = (-9.995 < $perc && $perc < 99.995)
? sprintf(" (%5.2f%%)", $perc)
: sprintf(" (%5.1f%%)", $perc);
} else {
# Don't show percentages for "." and "0" entries.
$perc = " ";
}
}
# $reps will be negative for the extreme values mentioned above. The
# use of max() avoids a possible warning about a negative repeat count.
my $text = $count . $perc;
my $len = length($text);
my $reps = $CC_col_widths->[$i] - length($text);
my $space = ' ' x max($reps, 0);
print("$space$text ");
}
}
sub print_events ($)
{
my ($CC_col_widths) = @_;
foreach my $i (@show_order) {
my $event = $events[$i];
my $event_width = length($event);
my $col_width = $CC_col_widths->[$i];
my $space = ' ' x ($col_width - $event_width);
print("$event$space ");
}
}
# Prints summary and function totals (with separate column widths, so that
# function names aren't pushed over unnecessarily by huge summary figures).
# Also returns a hash containing all the files that are involved in getting the
# events count above the thresholds (ie. all the interesting ones).
sub print_summary_and_fn_totals ()
{
my @fn_fullnames = keys %fn_totals;
# Work out the size of each column for printing (summary and functions
# separately).
my $summary_CC_col_widths = compute_CC_col_widths($summary_CC);
my $fn_CC_col_widths = compute_CC_col_widths(values %fn_totals);
# Header and counts for summary
print($fancy);
print_events($summary_CC_col_widths);
print("\n");
print($fancy);
print_CC($summary_CC, $summary_CC_col_widths);
print(" PROGRAM TOTALS");
if ($summary_calculated) {
print(" (calculated)");
}
print("\n\n");
# Header for functions
print($fancy);
print_events($fn_CC_col_widths);
print(" file:function\n");
print($fancy);
# Sort function names into order dictated by --sort option.
@fn_fullnames = sort {
mycmp($fn_totals{$a}, $fn_totals{$b}) || $a cmp $b
} @fn_fullnames;
# Assertion
(scalar @sort_order == scalar @thresholds) or
die("sort_order length != thresholds length:\n",
" @sort_order\n @thresholds\n");
my $threshold_files = {};
# @curr_totals has the same shape as @sort_order and @thresholds
my @curr_totals = ();
foreach my $e (@thresholds) {
push(@curr_totals, 0);
}
# Print functions, stopping when the threshold has been reached.
foreach my $fn_name (@fn_fullnames) {
# if $single_threshold is 100 the user want to see everything,
# so do not enter the filtering logic, as truncation can cause
# some functions to not be shown.
if ($single_threshold < 100) {
# Stop when we've reached all the thresholds
my $reached_all_thresholds = 1;
foreach my $i (0 .. scalar @thresholds - 1) {
my $prop = $curr_totals[$i] * 100;
if (defined $summary_CC->[$sort_order[$i]] &&
$summary_CC->[$sort_order[$i]] >0) {
$prop = $prop / $summary_CC->[$sort_order[$i]];
}
$reached_all_thresholds &&= ($prop >= $thresholds[$i]);
}
last if $reached_all_thresholds;
}
if ($tree_caller || $tree_calling) { print "\n"; }
if ($tree_caller && ($fn_name ne "???:???")) {
# Print function callers
my $tmp1 = $calling_funcs->{$fn_name};
if (defined $tmp1) {
# Sort calling functions into order dictated by --sort option.
my @callings = sort {
mycmp($call_CCs{$a,$fn_name}, $call_CCs{$b,$fn_name})
} keys %$tmp1;
foreach my $calling (@callings) {
if (defined $call_counter{$calling,$fn_name}) {
print_CC($call_CCs{$calling,$fn_name}, $fn_CC_col_widths);
print" < $calling (";
print commify($call_counter{$calling,$fn_name}) . "x)";
if (defined $obj_name{$calling}) {
print " [$obj_name{$calling}]";
}
print "\n";
}
}
}
}
# Print function results
my $fn_CC = $fn_totals{$fn_name};
print_CC($fn_CC, $fn_CC_col_widths);
if ($tree_caller || $tree_calling) { print " * "; }
print(" $fn_name");
if ((defined $obj_name{$fn_name}) &&
($obj_name{$fn_name} ne "")) {
print " [$obj_name{$fn_name}]";
}
print "\n";
if ($tree_calling && ($fn_name ne "???:???")) {
# Print called functions
my $tmp2 = $called_funcs->{$fn_name};
if (defined $tmp2) {
# Sort called functions into order dictated by --sort option.
my @calleds = sort {
mycmp($call_CCs{$fn_name,$a}, $call_CCs{$fn_name,$b})
} keys %$tmp2;
foreach my $called (@calleds) {
if (defined $call_counter{$fn_name,$called}) {
print_CC($call_CCs{$fn_name,$called}, $fn_CC_col_widths);
print" > $called (";
print commify($call_counter{$fn_name,$called}) . "x)";
if (defined $obj_name{$called}) {
print " [$obj_name{$called}]";
}
print "\n";
}
}
}
}
# Update the threshold counts
my $filename = $fn_name;
$filename =~ s/:.+$//; # remove function name
$threshold_files->{$filename} = 1;
foreach my $i (0 .. scalar @sort_order - 1) {
if ($inclusive) {
$curr_totals[$i] = $summary_CC->[$sort_order[$i]] -
$fn_CC->[$sort_order[$i]]
if (defined $fn_CC->[$sort_order[$i]]);
} else {
$curr_totals[$i] += $fn_CC->[$sort_order[$i]]
if (defined $fn_CC->[$sort_order[$i]]);
}
}
}
print("\n");
return $threshold_files;
}
#-----------------------------------------------------------------------------
# Annotate selected files
#-----------------------------------------------------------------------------
# Issue a warning that the source file is more recent than the input file.
sub warning_on_src_more_recent_than_inputfile ($)
{
my $src_file = $_[0];
my $warning = <<END
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@ WARNING @@ WARNING @@ WARNING @@ WARNING @@ WARNING @@ WARNING @@ WARNING @@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ Source file '$src_file' is more recent than input file '$input_file'.
@ Annotations may not be correct.
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
END
;
print($warning);
}
# If there is information about lines not in the file, issue a warning
# explaining possible causes.
sub warning_on_nonexistent_lines ($$$)
{
my ($src_more_recent_than_inputfile, $src_file, $excess_line_nums) = @_;
my $cause_and_solution;
if ($src_more_recent_than_inputfile) {
$cause_and_solution = <<END
@@ cause: '$src_file' has changed since information was gathered.
@@ If so, a warning will have already been issued about this.
@@ solution: Recompile program and rerun under "valgrind --cachesim=yes" to
@@ gather new information.
END
# We suppress warnings about .h files
} elsif ($src_file =~ /\.h$/) {
$cause_and_solution = <<END
@@ cause: bug in the Valgrind's debug info reader that screws up with .h
@@ files sometimes
@@ solution: none, sorry
END
} else {
$cause_and_solution = <<END
@@ cause: not sure, sorry
END
}
my $warning = <<END
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@ WARNING @@ WARNING @@ WARNING @@ WARNING @@ WARNING @@ WARNING @@ WARNING @@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@
@@ Information recorded about lines past the end of '$src_file'.
@@
@@ Probable cause and solution:
$cause_and_solution@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
END
;
print($warning);
}
sub annotate_ann_files($)
{
my ($threshold_files) = @_;
my %all_ann_files;
my @unfound_auto_annotate_files;
my $printed_totals_CC = [];
# If auto-annotating, add interesting files (but not "???")
if ($auto_annotate) {
delete $threshold_files->{"???"};
%all_ann_files = (%user_ann_files, %$threshold_files)
} else {
%all_ann_files = %user_ann_files;
}
# Track if we did any annotations.
my $did_annotations = 0;
LOOP:
foreach my $src_file (keys %all_ann_files) {
my $opened_file = "";
my $full_file_name = "";
foreach my $include_dir (@include_dirs) {
my $try_name = $include_dir . $src_file;
if (open(INPUTFILE, "< $try_name")) {
$opened_file = $try_name;
$full_file_name = ($include_dir eq ""
? $src_file
: "$include_dir + $src_file");
last;
}
}
if (not $opened_file) {
# Failed to open the file. If chosen on the command line, die.
# If arose from auto-annotation, print a little message.
if (defined $user_ann_files{$src_file}) {
die("File $src_file not opened in any of: @include_dirs\n");
} else {
push(@unfound_auto_annotate_files, $src_file);
}
} else {
# File header (distinguish between user- and auto-selected files).
print("$fancy");
my $ann_type =
(defined $user_ann_files{$src_file} ? "User" : "Auto");
print("-- $ann_type-annotated source: $full_file_name\n");
print("$fancy");
# Get file's CCs
my $src_file_CCs = $all_ind_CCs{$src_file};
if (!defined $src_file_CCs) {
print(" No information has been collected for $src_file\n\n");
next LOOP;
}
$did_annotations = 1;
# Numeric, not lexicographic sort!
my @line_nums = sort {$a <=> $b} keys %$src_file_CCs;
# If $src_file more recent than cachegrind.out, issue warning
my $src_more_recent_than_inputfile = 0;
if ((stat $opened_file)[9] > (stat $input_file)[9]) {
$src_more_recent_than_inputfile = 1;
warning_on_src_more_recent_than_inputfile($src_file);
}
# Work out the size of each column for printing
my $CC_col_widths = compute_CC_col_widths(values %$src_file_CCs);
# Events header
print_events($CC_col_widths);
print("\n\n");
# Shift out 0 if it's in the line numbers (from unknown entries,
# likely due to bugs in Valgrind's stabs debug info reader)
shift(@line_nums) if (0 == $line_nums[0]);
# Finds interesting line ranges -- all lines with a CC, and all
# lines within $context lines of a line with a CC.
my $n = @line_nums;
my @pairs;
for (my $i = 0; $i < $n; $i++) {
push(@pairs, $line_nums[$i] - $context); # lower marker
while ($i < $n-1 &&
$line_nums[$i] + 2*$context >= $line_nums[$i+1]) {
$i++;
}
push(@pairs, $line_nums[$i] + $context); # upper marker
}
# Annotate chosen lines, tracking total counts of lines printed
$pairs[0] = 1 if ($pairs[0] < 1);
while (@pairs) {
my $low = shift @pairs;
my $high = shift @pairs;
while ($. < $low-1) {
my $tmp = <INPUTFILE>;
last unless (defined $tmp); # hack to detect EOF
}
my $src_line;
# Print line number, unless start of file
print("-- line $low " . '-' x 40 . "\n") if ($low != 1);
while (($. < $high) && ($src_line = <INPUTFILE>)) {
if (defined $line_nums[0] && $. == $line_nums[0]) {
print_CC($src_file_CCs->{$.}, $CC_col_widths);
add_array_a_to_b($src_file_CCs->{$.},
$printed_totals_CC);
shift(@line_nums);
} else {
print_CC([], $CC_col_widths);
}
print(" $src_line");
my $tmp = $called_from_line->{$src_file,$.};
my $func = $func_of_line{$src_file,$.};
if (defined $tmp) {
# Sort called functions into order dictated by --sort option.
my @calleds = sort {
mycmp($call_CCs{$func,$a}, $call_CCs{$func,$b})
} keys %$tmp;
foreach my $called (@calleds) {
if (defined $call_CCs{$func,$called,$.}) {
print_CC($call_CCs{$func,$called,$.}, $CC_col_widths);
print " => $called (";
print commify($call_counter{$func,$called,$.}) . "x)\n";
}
}
}
}
# Print line number, unless EOF
if ($src_line) {
print("-- line $high " . '-' x 40 . "\n");
} else {
last;
}
}
# If there was info on lines past the end of the file...
if (@line_nums) {
foreach my $line_num (@line_nums) {
print_CC($src_file_CCs->{$line_num}, $CC_col_widths);
print(" <bogus line $line_num>\n");
}
print("\n");
warning_on_nonexistent_lines($src_more_recent_than_inputfile,
$src_file, \@line_nums);
}
print("\n");
# Print summary of counts attributed to file but not to any
# particular line (due to incomplete debug info).
if ($src_file_CCs->{0}) {
print_CC($src_file_CCs->{0}, $CC_col_widths);
print(" <counts for unidentified lines in $src_file>\n\n");
}
close(INPUTFILE);
}
}
# Print list of unfound auto-annotate selected files.
if (@unfound_auto_annotate_files) {
print("$fancy");
print("The following files chosen for auto-annotation could not be found:\n");
print($fancy);
foreach my $f (sort @unfound_auto_annotate_files) {
print(" $f\n");
}
print("\n");
}
# If we did any annotating, show how many events were covered by annotated
# lines above.
if ($did_annotations) {
foreach (my $i = 0; $i < @$summary_CC; $i++) {
# Some files (in particular the files produced by --xtree-memory)
# have non additive self costs, so have a special case for these
# to print all functions and also to avoid a division by 0.
if ($summary_CC->[$i] == 0
|| $printed_totals_CC->[$i] > $summary_CC->[$i]) {
# Set the summary_CC value equal to the printed_totals_CC value
# so that the percentage printed by the print_CC call below is
# 100%. This is ok because the summary_CC value is not used
# again afterward.
$summary_CC->[$i] = $printed_totals_CC->[$i];
}
}
my $CC_col_widths = compute_CC_col_widths($printed_totals_CC);
print($fancy);
print_events($CC_col_widths);
print("\n");
print($fancy);
print_CC($printed_totals_CC, $CC_col_widths);
print(" events annotated\n\n");
}
}
#----------------------------------------------------------------------------
# "main()"
#----------------------------------------------------------------------------
process_cmd_line();
read_input_file();
print_options();
my $threshold_files = print_summary_and_fn_totals();
annotate_ann_files($threshold_files);
##--------------------------------------------------------------------##
##--- end vg_annotate.in ---##
##--------------------------------------------------------------------##