/
flamegraph.pl
executable file
·1078 lines (995 loc) · 31.3 KB
/
flamegraph.pl
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#!/usr/bin/perl -w
#
# flamegraph.pl flame stack grapher.
#
# This takes stack samples and renders a call graph, allowing hot functions
# and codepaths to be quickly identified. Stack samples can be generated using
# tools such as DTrace, perf, SystemTap, and Instruments.
#
# USAGE: ./flamegraph.pl [options] input.txt > graph.svg
#
# grep funcA input.txt | ./flamegraph.pl [options] > graph.svg
#
# Then open the resulting .svg in a web browser, for interactivity: mouse-over
# frames for info, click to zoom, and ctrl-F to search.
#
# Options are listed in the usage message (--help).
#
# The input is stack frames and sample counts formatted as single lines. Each
# frame in the stack is semicolon separated, with a space and count at the end
# of the line. These can be generated using DTrace with stackcollapse.pl,
# and other tools using the stackcollapse variants.
#
# An optional extra column of counts can be provided to generate a differential
# flame graph of the counts, colored red for more, and blue for less. This
# can be useful when using flame graphs for non-regression testing.
# See the header comment in the difffolded.pl program for instructions.
#
# The output graph shows relative presence of functions in stack samples. The
# ordering on the x-axis has no meaning; since the data is samples, time order
# of events is not known. The order used sorts function names alphabetically.
#
# While intended to process stack samples, this can also process stack traces.
# For example, tracing stacks for memory allocation, or resource usage. You
# can use --title to set the title to reflect the content, and --countname
# to change "samples" to "bytes" etc.
#
# There are a few different palettes, selectable using --color. By default,
# the colors are selected at random (except for differentials). Functions
# called "-" will be printed gray, which can be used for stack separators (eg,
# between user and kernel stacks).
#
# HISTORY
#
# This was inspired by Neelakanth Nadgir's excellent function_call_graph.rb
# program, which visualized function entry and return trace events. As Neel
# wrote: "The output displayed is inspired by Roch's CallStackAnalyzer which
# was in turn inspired by the work on vftrace by Jan Boerhout". See:
# https://blogs.oracle.com/realneel/entry/visualizing_callstacks_via_dtrace_and
#
# Copyright 2016 Netflix, Inc.
# Copyright 2011 Joyent, Inc. All rights reserved.
# Copyright 2011 Brendan Gregg. All rights reserved.
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at docs/cddl1.txt or
# http://opensource.org/licenses/CDDL-1.0.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at docs/cddl1.txt.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# 11-Oct-2014 Adrien Mahieux Added zoom.
# 21-Nov-2013 Shawn Sterling Added consistent palette file option
# 17-Mar-2013 Tim Bunce Added options and more tunables.
# 15-Dec-2011 Dave Pacheco Support for frames with whitespace.
# 10-Sep-2011 Brendan Gregg Created this.
use strict;
use Getopt::Long;
# tunables
my $encoding;
my $fonttype = "Verdana";
my $imagewidth = 1200; # max width, pixels
my $frameheight = 16; # max height is dynamic
my $fontsize = 12; # base text size
my $fontwidth = 0.59; # avg width relative to fontsize
my $minwidth = 0.1; # min function width, pixels
my $nametype = "Function:"; # what are the names in the data?
my $countname = "samples"; # what are the counts in the data?
my $colors = "hot"; # color theme
my $bgcolor1 = "#eeeeee"; # background color gradient start
my $bgcolor2 = "#eeeeb0"; # background color gradient stop
my $nameattrfile; # file holding function attributes
my $timemax; # (override the) sum of the counts
my $factor = 1; # factor to scale counts by
my $hash = 0; # color by function name
my $palette = 0; # if we use consistent palettes (default off)
my %palette_map; # palette map hash
my $pal_file = "palette.map"; # palette map file name
my $stackreverse = 0; # reverse stack order, switching merge end
my $inverted = 0; # icicle graph
my $negate = 0; # switch differential hues
my $titletext = ""; # centered heading
my $titledefault = "Flame Graph"; # overwritten by --title
my $titleinverted = "Icicle Graph"; # " "
my $searchcolor = "rgb(230,0,230)"; # color for search highlighting
my $help = 0;
sub usage {
die <<USAGE_END;
USAGE: $0 [options] infile > outfile.svg\n
--title # change title text
--width # width of image (default 1200)
--height # height of each frame (default 16)
--minwidth # omit smaller functions (default 0.1 pixels)
--fonttype # font type (default "Verdana")
--fontsize # font size (default 12)
--countname # count type label (default "samples")
--nametype # name type label (default "Function:")
--colors # set color palette. choices are: hot (default), mem, io,
# wakeup, chain, java, js, perl, red, green, blue, aqua,
# yellow, purple, orange
--hash # colors are keyed by function name hash
--cp # use consistent palette (palette.map)
--reverse # generate stack-reversed flame graph
--inverted # icicle graph
--negate # switch differential hues (blue<->red)
--help # this message
eg,
$0 --title="Flame Graph: malloc()" trace.txt > graph.svg
USAGE_END
}
GetOptions(
'fonttype=s' => \$fonttype,
'width=i' => \$imagewidth,
'height=i' => \$frameheight,
'encoding=s' => \$encoding,
'fontsize=f' => \$fontsize,
'fontwidth=f' => \$fontwidth,
'minwidth=f' => \$minwidth,
'title=s' => \$titletext,
'nametype=s' => \$nametype,
'countname=s' => \$countname,
'nameattr=s' => \$nameattrfile,
'total=s' => \$timemax,
'factor=f' => \$factor,
'colors=s' => \$colors,
'hash' => \$hash,
'cp' => \$palette,
'reverse' => \$stackreverse,
'inverted' => \$inverted,
'negate' => \$negate,
'help' => \$help,
) or usage();
$help && usage();
# internals
my $ypad1 = $fontsize * 4; # pad top, include title
my $ypad2 = $fontsize * 2 + 10; # pad bottom, include labels
my $xpad = 10; # pad lefm and right
my $framepad = 1; # vertical padding for frames
my $depthmax = 0;
my %Events;
my %nameattr;
if ($titletext eq "") {
unless ($inverted) {
$titletext = $titledefault;
} else {
$titletext = $titleinverted;
}
}
if ($nameattrfile) {
# The name-attribute file format is a function name followed by a tab then
# a sequence of tab separated name=value pairs.
open my $attrfh, $nameattrfile or die "Can't read $nameattrfile: $!\n";
while (<$attrfh>) {
chomp;
my ($funcname, $attrstr) = split /\t/, $_, 2;
die "Invalid format in $nameattrfile" unless defined $attrstr;
$nameattr{$funcname} = { map { split /=/, $_, 2 } split /\t/, $attrstr };
}
}
# background colors:
# - yellow gradient: default (hot, java, js, perl)
# - blue gradient: mem, chain
# - gray gradient: io, wakeup, flat colors (red, green, blue, ...)
if ($colors eq "mem" or $colors eq "chain") {
$bgcolor1 = "#eeeeee"; $bgcolor2 = "#e0e0ff";
}
if ($colors =~ /^(io|wakeup|red|green|blue|aqua|yellow|purple|orange)$/) {
$bgcolor1 = "#f8f8f8"; $bgcolor2 = "#e8e8e8";
}
# SVG functions
{ package SVG;
sub new {
my $class = shift;
my $self = {};
bless ($self, $class);
return $self;
}
sub header {
my ($self, $w, $h) = @_;
my $enc_attr = '';
if (defined $encoding) {
$enc_attr = qq{ encoding="$encoding"};
}
$self->{svg} .= <<SVG;
<?xml version="1.0"$enc_attr standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg version="1.1" width="$w" height="$h" onload="init(evt)" viewBox="0 0 $w $h" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<!-- Flame graph stack visualization. See https://github.com/brendangregg/FlameGraph for latest version, and http://www.brendangregg.com/flamegraphs.html for examples. -->
SVG
}
sub include {
my ($self, $content) = @_;
$self->{svg} .= $content;
}
sub colorAllocate {
my ($self, $r, $g, $b) = @_;
return "rgb($r,$g,$b)";
}
sub group_start {
my ($self, $attr) = @_;
my @g_attr = map {
exists $attr->{$_} ? sprintf(qq/$_="%s"/, $attr->{$_}) : ()
} qw(class style onmouseover onmouseout onclick);
push @g_attr, $attr->{g_extra} if $attr->{g_extra};
$self->{svg} .= sprintf qq/<g %s>\n/, join(' ', @g_attr);
$self->{svg} .= sprintf qq/<title>%s<\/title>/, $attr->{title}
if $attr->{title}; # should be first element within g container
if ($attr->{href}) {
my @a_attr;
push @a_attr, sprintf qq/xlink:href="%s"/, $attr->{href} if $attr->{href};
# default target=_top else links will open within SVG <object>
push @a_attr, sprintf qq/target="%s"/, $attr->{target} || "_top";
push @a_attr, $attr->{a_extra} if $attr->{a_extra};
$self->{svg} .= sprintf qq/<a %s>/, join(' ', @a_attr);
}
}
sub group_end {
my ($self, $attr) = @_;
$self->{svg} .= qq/<\/a>\n/ if $attr->{href};
$self->{svg} .= qq/<\/g>\n/;
}
sub filledRectangle {
my ($self, $x1, $y1, $x2, $y2, $fill, $extra) = @_;
$x1 = sprintf "%0.1f", $x1;
$x2 = sprintf "%0.1f", $x2;
my $w = sprintf "%0.1f", $x2 - $x1;
my $h = sprintf "%0.1f", $y2 - $y1;
$extra = defined $extra ? $extra : "";
$self->{svg} .= qq/<rect x="$x1" y="$y1" width="$w" height="$h" fill="$fill" $extra \/>\n/;
}
sub stringTTF {
my ($self, $color, $font, $size, $angle, $x, $y, $str, $loc, $extra) = @_;
$x = sprintf "%0.2f", $x;
$loc = defined $loc ? $loc : "left";
$extra = defined $extra ? $extra : "";
$self->{svg} .= qq/<text text-anchor="$loc" x="$x" y="$y" font-size="$size" font-family="$font" fill="$color" $extra >$str<\/text>\n/;
}
sub svg {
my $self = shift;
return "$self->{svg}</svg>\n";
}
1;
}
sub namehash {
# Generate a vector hash for the name string, weighting early over
# later characters. We want to pick the same colors for function
# names across different flame graphs.
my $name = shift;
my $vector = 0;
my $weight = 1;
my $max = 1;
my $mod = 10;
# if module name present, trunc to 1st char
$name =~ s/.(.*?)`//;
foreach my $c (split //, $name) {
my $i = (ord $c) % $mod;
$vector += ($i / ($mod++ - 1)) * $weight;
$max += 1 * $weight;
$weight *= 0.70;
last if $mod > 12;
}
return (1 - $vector / $max)
}
sub color {
my ($type, $hash, $name) = @_;
my ($v1, $v2, $v3);
if ($hash) {
$v1 = namehash($name);
$v2 = $v3 = namehash(scalar reverse $name);
} else {
$v1 = rand(1);
$v2 = rand(1);
$v3 = rand(1);
}
# theme palettes
if (defined $type and $type eq "hot") {
my $r = 205 + int(50 * $v3);
my $g = 0 + int(230 * $v1);
my $b = 0 + int(55 * $v2);
return "rgb($r,$g,$b)";
}
if (defined $type and $type eq "mem") {
my $r = 0;
my $g = 190 + int(50 * $v2);
my $b = 0 + int(210 * $v1);
return "rgb($r,$g,$b)";
}
if (defined $type and $type eq "io") {
my $r = 80 + int(60 * $v1);
my $g = $r;
my $b = 190 + int(55 * $v2);
return "rgb($r,$g,$b)";
}
# multi palettes
if (defined $type and $type eq "java") {
if ($name =~ m:/:) { # Java (match "/" in path)
$type = "green";
$type = "aqua" if $name =~ m/_\[i\]/; #inline
} elsif ($name =~ /::/) { # C++
$type = "yellow";
} elsif ($name =~ m:_\[k\]:) { # kernel
$type = "orange"
} else { # system
$type = "red";
}
# fall-through to color palettes
}
if (defined $type and $type eq "perl") {
if ($name =~ /::/) { # C++
$type = "yellow";
} elsif ($name =~ m:Perl: or $name =~ m:\.pl:) { # Perl
$type = "green";
} elsif ($name =~ m:_\[k\]:) { # kernel
$type = "orange"
} else { # system
$type = "red";
}
# fall-through to color palettes
}
if (defined $type and $type eq "js") {
if ($name =~ /::/) { # C++
$type = "yellow";
} elsif ($name =~ m:/:) { # JavaScript (match "/" in path)
$type = "green"
} elsif ($name =~ m/:/) { # JavaScript (match ":" in builtin)
$type = "aqua"
} elsif ($name =~ m/^ $/) { # Missing symbol
$type = "green"
} elsif ($name =~ m:_\[k\]:) { # kernel
$type = "orange"
} else { # system
$type = "red";
}
# fall-through to color palettes
}
if (defined $type and $type eq "wakeup") {
$type = "aqua";
# fall-through to color palettes
}
if (defined $type and $type eq "chain") {
if ($name =~ m:_\[w\]:) { # waker
$type = "aqua"
} else { # off-CPU
$type = "blue";
}
# fall-through to color palettes
}
# color palettes
if (defined $type and $type eq "red") {
my $r = 200 + int(55 * $v1);
my $x = 50 + int(80 * $v1);
return "rgb($r,$x,$x)";
}
if (defined $type and $type eq "green") {
my $g = 200 + int(55 * $v1);
my $x = 50 + int(60 * $v1);
return "rgb($x,$g,$x)";
}
if (defined $type and $type eq "blue") {
my $b = 205 + int(50 * $v1);
my $x = 80 + int(60 * $v1);
return "rgb($x,$x,$b)";
}
if (defined $type and $type eq "yellow") {
my $x = 175 + int(55 * $v1);
my $b = 50 + int(20 * $v1);
return "rgb($x,$x,$b)";
}
if (defined $type and $type eq "purple") {
my $x = 190 + int(65 * $v1);
my $g = 80 + int(60 * $v1);
return "rgb($x,$g,$x)";
}
if (defined $type and $type eq "aqua") {
my $r = 50 + int(60 * $v1);
my $g = 165 + int(55 * $v1);
my $b = 165 + int(55 * $v1);
return "rgb($r,$g,$b)";
}
if (defined $type and $type eq "orange") {
my $r = 190 + int(65 * $v1);
my $g = 90 + int(65 * $v1);
return "rgb($r,$g,0)";
}
return "rgb(0,0,0)";
}
sub color_scale {
my ($value, $max) = @_;
my ($r, $g, $b) = (255, 255, 255);
$value = -$value if $negate;
if ($value > 0) {
$g = $b = int(210 * ($max - $value) / $max);
} elsif ($value < 0) {
$r = $g = int(210 * ($max + $value) / $max);
}
return "rgb($r,$g,$b)";
}
sub color_map {
my ($colors, $func) = @_;
if (exists $palette_map{$func}) {
return $palette_map{$func};
} else {
$palette_map{$func} = color($colors, $hash, $func);
return $palette_map{$func};
}
}
sub write_palette {
open(FILE, ">$pal_file");
foreach my $key (sort keys %palette_map) {
print FILE $key."->".$palette_map{$key}."\n";
}
close(FILE);
}
sub read_palette {
if (-e $pal_file) {
open(FILE, $pal_file) or die "can't open file $pal_file: $!";
while ( my $line = <FILE>) {
chomp($line);
(my $key, my $value) = split("->",$line);
$palette_map{$key}=$value;
}
close(FILE)
}
}
my %Node; # Hash of merged frame data
my %Tmp;
# flow() merges two stacks, storing the merged frames and value data in %Node.
sub flow {
my ($last, $this, $v, $d) = @_;
my $len_a = @$last - 1;
my $len_b = @$this - 1;
my $i = 0;
my $len_same;
for (; $i <= $len_a; $i++) {
last if $i > $len_b;
last if $last->[$i] ne $this->[$i];
}
$len_same = $i;
for ($i = $len_a; $i >= $len_same; $i--) {
my $k = "$last->[$i];$i";
# a unique ID is constructed from "func;depth;etime";
# func-depth isn't unique, it may be repeated later.
$Node{"$k;$v"}->{stime} = delete $Tmp{$k}->{stime};
if (defined $Tmp{$k}->{delta}) {
$Node{"$k;$v"}->{delta} = delete $Tmp{$k}->{delta};
}
delete $Tmp{$k};
}
for ($i = $len_same; $i <= $len_b; $i++) {
my $k = "$this->[$i];$i";
$Tmp{$k}->{stime} = $v;
if (defined $d) {
$Tmp{$k}->{delta} += $i == $len_b ? $d : 0;
}
}
return $this;
}
# parse input
my @Data;
my $last = [];
my $time = 0;
my $delta = undef;
my $ignored = 0;
my $line;
my $maxdelta = 1;
# reverse if needed
foreach (<>) {
chomp;
$line = $_;
if ($stackreverse) {
# there may be an extra samples column for differentials
# XXX todo: redo these REs as one. It's repeated below.
my($stack, $samples) = (/^(.*)\s+?(\d+(?:\.\d*)?)$/);
my $samples2 = undef;
if ($stack =~ /^(.*)\s+?(\d+(?:\.\d*)?)$/) {
$samples2 = $samples;
($stack, $samples) = $stack =~ (/^(.*)\s+?(\d+(?:\.\d*)?)$/);
unshift @Data, join(";", reverse split(";", $stack)) . " $samples $samples2";
} else {
unshift @Data, join(";", reverse split(";", $stack)) . " $samples";
}
} else {
unshift @Data, $line;
}
}
# process and merge frames
foreach (sort @Data) {
chomp;
# process: folded_stack count
# eg: func_a;func_b;func_c 31
my ($stack, $samples) = (/^(.*)\s+?(\d+(?:\.\d*)?)$/);
unless (defined $samples and defined $stack) {
++$ignored;
next;
}
# there may be an extra samples column for differentials:
my $samples2 = undef;
if ($stack =~ /^(.*)\s+?(\d+(?:\.\d*)?)$/) {
$samples2 = $samples;
($stack, $samples) = $stack =~ (/^(.*)\s+?(\d+(?:\.\d*)?)$/);
}
$delta = undef;
if (defined $samples2) {
$delta = $samples2 - $samples;
$maxdelta = abs($delta) if abs($delta) > $maxdelta;
}
# for chain graphs, annotate waker frames with "_[w]", for later
# coloring. This is a hack, but has a precedent ("_[k]" from perf).
if ($colors eq "chain") {
my @parts = split ";--;", $stack;
my @newparts = ();
$stack = shift @parts;
$stack .= ";--;";
foreach my $part (@parts) {
$part =~ s/;/_[w];/g;
$part .= "_[w]";
push @newparts, $part;
}
$stack .= join ";--;", @parts;
}
# merge frames and populate %Node:
$last = flow($last, [ '', split ";", $stack ], $time, $delta);
if (defined $samples2) {
$time += $samples2;
} else {
$time += $samples;
}
}
flow($last, [], $time, $delta);
warn "Ignored $ignored lines with invalid format\n" if $ignored;
unless ($time) {
warn "ERROR: No stack counts found\n";
my $im = SVG->new();
# emit an error message SVG, for tools automating flamegraph use
my $imageheight = $fontsize * 5;
$im->header($imagewidth, $imageheight);
$im->stringTTF($im->colorAllocate(0, 0, 0), $fonttype, $fontsize + 2,
0.0, int($imagewidth / 2), $fontsize * 2,
"ERROR: No valid input provided to flamegraph.pl.", "middle");
print $im->svg;
exit 2;
}
if ($timemax and $timemax < $time) {
warn "Specified --total $timemax is less than actual total $time, so ignored\n"
if $timemax/$time > 0.02; # only warn is significant (e.g., not rounding etc)
undef $timemax;
}
$timemax ||= $time;
my $widthpertime = ($imagewidth - 2 * $xpad) / $timemax;
my $minwidth_time = $minwidth / $widthpertime;
# prune blocks that are too narrow and determine max depth
while (my ($id, $node) = each %Node) {
my ($func, $depth, $etime) = split ";", $id;
my $stime = $node->{stime};
die "missing start for $id" if not defined $stime;
if (($etime-$stime) < $minwidth_time) {
delete $Node{$id};
next;
}
$depthmax = $depth if $depth > $depthmax;
}
# draw canvas, and embed interactive JavaScript program
my $imageheight = ($depthmax * $frameheight) + $ypad1 + $ypad2;
my $im = SVG->new();
$im->header($imagewidth, $imageheight);
my $inc = <<INC;
<defs >
<linearGradient id="background" y1="0" y2="1" x1="0" x2="0" >
<stop stop-color="$bgcolor1" offset="5%" />
<stop stop-color="$bgcolor2" offset="95%" />
</linearGradient>
</defs>
<style type="text/css">
.func_g:hover { stroke:black; stroke-width:0.5; cursor:pointer; }
</style>
<script type="text/ecmascript">
<![CDATA[
var details, searchbtn, matchedtxt, svg;
function init(evt) {
details = document.getElementById("details").firstChild;
searchbtn = document.getElementById("search");
matchedtxt = document.getElementById("matched");
svg = document.getElementsByTagName("svg")[0];
searching = 0;
}
// mouse-over for info
function s(node) { // show
info = g_to_text(node);
details.nodeValue = "$nametype " + info;
}
function c() { // clear
details.nodeValue = ' ';
}
// ctrl-F for search
window.addEventListener("keydown",function (e) {
if (e.keyCode === 114 || (e.ctrlKey && e.keyCode === 70)) {
e.preventDefault();
search_prompt();
}
})
// functions
function find_child(parent, name, attr) {
var children = parent.childNodes;
for (var i=0; i<children.length;i++) {
if (children[i].tagName == name)
return (attr != undefined) ? children[i].attributes[attr].value : children[i];
}
return;
}
function orig_save(e, attr, val) {
if (e.attributes["_orig_"+attr] != undefined) return;
if (e.attributes[attr] == undefined) return;
if (val == undefined) val = e.attributes[attr].value;
e.setAttribute("_orig_"+attr, val);
}
function orig_load(e, attr) {
if (e.attributes["_orig_"+attr] == undefined) return;
e.attributes[attr].value = e.attributes["_orig_"+attr].value;
e.removeAttribute("_orig_"+attr);
}
function g_to_text(e) {
var text = find_child(e, "title").firstChild.nodeValue;
return (text)
}
function g_to_func(e) {
var func = g_to_text(e);
if (func != null)
func = func.replace(/ .*/, "");
return (func);
}
function update_text(e) {
var r = find_child(e, "rect");
var t = find_child(e, "text");
var w = parseFloat(r.attributes["width"].value) -3;
var txt = find_child(e, "title").textContent.replace(/\\([^(]*\\)\$/,"");
t.attributes["x"].value = parseFloat(r.attributes["x"].value) +3;
// Smaller than this size won't fit anything
if (w < 2*$fontsize*$fontwidth) {
t.textContent = "";
return;
}
t.textContent = txt;
// Fit in full text width
if (/^ *\$/.test(txt) || t.getSubStringLength(0, txt.length) < w)
return;
for (var x=txt.length-2; x>0; x--) {
if (t.getSubStringLength(0, x+2) <= w) {
t.textContent = txt.substring(0,x) + "..";
return;
}
}
t.textContent = "";
}
// zoom
function zoom_reset(e) {
if (e.attributes != undefined) {
orig_load(e, "x");
orig_load(e, "width");
}
if (e.childNodes == undefined) return;
for(var i=0, c=e.childNodes; i<c.length; i++) {
zoom_reset(c[i]);
}
}
function zoom_child(e, x, ratio) {
if (e.attributes != undefined) {
if (e.attributes["x"] != undefined) {
orig_save(e, "x");
e.attributes["x"].value = (parseFloat(e.attributes["x"].value) - x - $xpad) * ratio + $xpad;
if(e.tagName == "text") e.attributes["x"].value = find_child(e.parentNode, "rect", "x") + 3;
}
if (e.attributes["width"] != undefined) {
orig_save(e, "width");
e.attributes["width"].value = parseFloat(e.attributes["width"].value) * ratio;
}
}
if (e.childNodes == undefined) return;
for(var i=0, c=e.childNodes; i<c.length; i++) {
zoom_child(c[i], x-$xpad, ratio);
}
}
function zoom_parent(e) {
if (e.attributes) {
if (e.attributes["x"] != undefined) {
orig_save(e, "x");
e.attributes["x"].value = $xpad;
}
if (e.attributes["width"] != undefined) {
orig_save(e, "width");
e.attributes["width"].value = parseInt(svg.width.baseVal.value) - ($xpad*2);
}
}
if (e.childNodes == undefined) return;
for(var i=0, c=e.childNodes; i<c.length; i++) {
zoom_parent(c[i]);
}
}
function zoom(node) {
var attr = find_child(node, "rect").attributes;
var width = parseFloat(attr["width"].value);
var xmin = parseFloat(attr["x"].value);
var xmax = parseFloat(xmin + width);
var ymin = parseFloat(attr["y"].value);
var ratio = (svg.width.baseVal.value - 2*$xpad) / width;
// XXX: Workaround for JavaScript float issues (fix me)
var fudge = 0.0001;
var unzoombtn = document.getElementById("unzoom");
unzoombtn.style["opacity"] = "1.0";
var el = document.getElementsByTagName("g");
for(var i=0;i<el.length;i++){
var e = el[i];
var a = find_child(e, "rect").attributes;
var ex = parseFloat(a["x"].value);
var ew = parseFloat(a["width"].value);
// Is it an ancestor
if ($inverted == 0) {
var upstack = parseFloat(a["y"].value) > ymin;
} else {
var upstack = parseFloat(a["y"].value) < ymin;
}
if (upstack) {
// Direct ancestor
if (ex <= xmin && (ex+ew+fudge) >= xmax) {
e.style["opacity"] = "0.5";
zoom_parent(e);
e.onclick = function(e){unzoom(); zoom(this);};
update_text(e);
}
// not in current path
else
e.style["display"] = "none";
}
// Children maybe
else {
// no common path
if (ex < xmin || ex + fudge >= xmax) {
e.style["display"] = "none";
}
else {
zoom_child(e, xmin, ratio);
e.onclick = function(e){zoom(this);};
update_text(e);
}
}
}
}
function unzoom() {
var unzoombtn = document.getElementById("unzoom");
unzoombtn.style["opacity"] = "0.0";
var el = document.getElementsByTagName("g");
for(i=0;i<el.length;i++) {
el[i].style["display"] = "block";
el[i].style["opacity"] = "1";
zoom_reset(el[i]);
update_text(el[i]);
}
}
// search
function reset_search() {
var el = document.getElementsByTagName("rect");
for (var i=0; i < el.length; i++) {
orig_load(el[i], "fill")
}
}
function search_prompt() {
if (!searching) {
var term = prompt("Enter a search term (regexp " +
"allowed, eg: ^ext4_)", "");
if (term != null) {
search(term)
}
} else {
reset_search();
searching = 0;
searchbtn.style["opacity"] = "0.1";
searchbtn.firstChild.nodeValue = "Search"
matchedtxt.style["opacity"] = "0.0";
matchedtxt.firstChild.nodeValue = ""
}
}
function search(term) {
var re = new RegExp(term);
var el = document.getElementsByTagName("g");
var matches = new Object();
var maxwidth = 0;
for (var i = 0; i < el.length; i++) {
var e = el[i];
if (e.attributes["class"].value != "func_g")
continue;
var func = g_to_func(e);
var rect = find_child(e, "rect");
if (rect == null) {
// the rect might be wrapped in an anchor
// if nameattr href is being used
if (rect = find_child(e, "a")) {
rect = find_child(r, "rect");
}
}
if (func == null || rect == null)
continue;
// Save max width. Only works as we have a root frame
var w = parseFloat(rect.attributes["width"].value);
if (w > maxwidth)
maxwidth = w;
if (func.match(re)) {
// highlight
var x = parseFloat(rect.attributes["x"].value);
orig_save(rect, "fill");
rect.attributes["fill"].value =
"$searchcolor";
// remember matches
if (matches[x] == undefined) {
matches[x] = w;
} else {
if (w > matches[x]) {
// overwrite with parent
matches[x] = w;
}
}
searching = 1;
}
}
if (!searching)
return;
searchbtn.style["opacity"] = "1.0";
searchbtn.firstChild.nodeValue = "Reset Search"
// calculate percent matched, excluding vertical overlap
var count = 0;
var lastx = -1;
var lastw = 0;
var keys = Array();
for (k in matches) {
if (matches.hasOwnProperty(k))
keys.push(k);
}
// sort the matched frames by their x location
// ascending, then width descending
keys.sort(function(a, b){
return a - b;
if (a < b || a > b)
return a - b;
return matches[b] - matches[a];
});
// Step through frames saving only the biggest bottom-up frames
// thanks to the sort order. This relies on the tree property
// where children are always smaller than their parents.
for (var k in keys) {
var x = parseFloat(keys[k]);
var w = matches[keys[k]];
if (x >= lastx + lastw) {
count += w;
lastx = x;
lastw = w;
}
}
// display matched percent
matchedtxt.style["opacity"] = "1.0";
pct = 100 * count / maxwidth;
if (pct == 100)
pct = "100"
else
pct = pct.toFixed(1)
matchedtxt.firstChild.nodeValue = "Matched: " + pct + "%";
}
function searchover(e) {
searchbtn.style["opacity"] = "1.0";
}
function searchout(e) {
if (searching) {
searchbtn.style["opacity"] = "1.0";
} else {
searchbtn.style["opacity"] = "0.1";
}
}
]]>
</script>
INC
$im->include($inc);
$im->filledRectangle(0, 0, $imagewidth, $imageheight, 'url(#background)');
my ($white, $black, $vvdgrey, $vdgrey, $dgrey) = (
$im->colorAllocate(255, 255, 255),
$im->colorAllocate(0, 0, 0),
$im->colorAllocate(40, 40, 40),
$im->colorAllocate(160, 160, 160),
$im->colorAllocate(200, 200, 200),
);
$im->stringTTF($black, $fonttype, $fontsize + 5, 0.0, int($imagewidth / 2), $fontsize * 2, $titletext, "middle");
$im->stringTTF($black, $fonttype, $fontsize, 0.0, $xpad, $imageheight - ($ypad2 / 2), " ", "", 'id="details"');
$im->stringTTF($black, $fonttype, $fontsize, 0.0, $xpad, $fontsize * 2,
"Reset Zoom", "", 'id="unzoom" onclick="unzoom()" style="opacity:0.0;cursor:pointer"');
$im->stringTTF($black, $fonttype, $fontsize, 0.0, $imagewidth - $xpad - 100,
$fontsize * 2, "Search", "", 'id="search" onmouseover="searchover()" onmouseout="searchout()" onclick="search_prompt()" style="opacity:0.1;cursor:pointer"');
$im->stringTTF($black, $fonttype, $fontsize, 0.0, $imagewidth - $xpad - 100, $imageheight - ($ypad2 / 2), " ", "", 'id="matched"');
if ($palette) {
read_palette();
}
# draw frames
while (my ($id, $node) = each %Node) {
my ($func, $depth, $etime) = split ";", $id;
my $stime = $node->{stime};
my $delta = $node->{delta};
$etime = $timemax if $func eq "" and $depth == 0;
my $x1 = $xpad + $stime * $widthpertime;
my $x2 = $xpad + $etime * $widthpertime;
my ($y1, $y2);