1244 lines
37 KiB
Perl
Executable File
1244 lines
37 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# flamegraph.pl flame stack grapher.
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#
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# This takes stack samples and renders a call graph, allowing hot functions
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# and codepaths to be quickly identified. Stack samples can be generated using
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# tools such as DTrace, perf, SystemTap, and Instruments.
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#
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# USAGE: ./flamegraph.pl [options] input.txt > graph.svg
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#
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# grep funcA input.txt | ./flamegraph.pl [options] > graph.svg
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#
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# Then open the resulting .svg in a web browser, for interactivity: mouse-over
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# frames for info, click to zoom, and ctrl-F to search.
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#
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# Options are listed in the usage message (--help).
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#
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# The input is stack frames and sample counts formatted as single lines. Each
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# frame in the stack is semicolon separated, with a space and count at the end
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# of the line. These can be generated for Linux perf script output using
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# stackcollapse-perf.pl, for DTrace using stackcollapse.pl, and for other tools
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# using the other stackcollapse programs. Example input:
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#
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# swapper;start_kernel;rest_init;cpu_idle;default_idle;native_safe_halt 1
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#
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# An optional extra column of counts can be provided to generate a differential
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# flame graph of the counts, colored red for more, and blue for less. This
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# can be useful when using flame graphs for non-regression testing.
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# See the header comment in the difffolded.pl program for instructions.
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#
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# The input functions can optionally have annotations at the end of each
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# function name, following a precedent by some tools (Linux perf's _[k]):
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# _[k] for kernel
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# _[i] for inlined
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# _[j] for jit
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# _[w] for waker
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# Some of the stackcollapse programs support adding these annotations, eg,
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# stackcollapse-perf.pl --kernel --jit. They are used merely for colors by
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# some palettes, eg, flamegraph.pl --color=java.
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#
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# The output flame graph shows relative presence of functions in stack samples.
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# The ordering on the x-axis has no meaning; since the data is samples, time
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# order of events is not known. The order used sorts function names
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# alphabetically.
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#
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# While intended to process stack samples, this can also process stack traces.
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# For example, tracing stacks for memory allocation, or resource usage. You
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# can use --title to set the title to reflect the content, and --countname
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# to change "samples" to "bytes" etc.
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#
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# There are a few different palettes, selectable using --color. By default,
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# the colors are selected at random (except for differentials). Functions
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# called "-" will be printed gray, which can be used for stack separators (eg,
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# between user and kernel stacks).
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#
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# HISTORY
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#
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# This was inspired by Neelakanth Nadgir's excellent function_call_graph.rb
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# program, which visualized function entry and return trace events. As Neel
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# wrote: "The output displayed is inspired by Roch's CallStackAnalyzer which
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# was in turn inspired by the work on vftrace by Jan Boerhout". See:
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# https://blogs.oracle.com/realneel/entry/visualizing_callstacks_via_dtrace_and
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#
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# Copyright 2016 Netflix, Inc.
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# Copyright 2011 Joyent, Inc. All rights reserved.
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# Copyright 2011 Brendan Gregg. All rights reserved.
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
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# Common Development and Distribution License (the "License").
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# You may not use this file except in compliance with the License.
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#
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# You can obtain a copy of the license at docs/cddl1.txt or
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# http://opensource.org/licenses/CDDL-1.0.
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# See the License for the specific language governing permissions
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# and limitations under the License.
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#
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# When distributing Covered Code, include this CDDL HEADER in each
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# file and include the License file at docs/cddl1.txt.
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# If applicable, add the following below this CDDL HEADER, with the
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# fields enclosed by brackets "[]" replaced with your own identifying
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# information: Portions Copyright [yyyy] [name of copyright owner]
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#
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# CDDL HEADER END
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#
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# 11-Oct-2014 Adrien Mahieux Added zoom.
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# 21-Nov-2013 Shawn Sterling Added consistent palette file option
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# 17-Mar-2013 Tim Bunce Added options and more tunables.
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# 15-Dec-2011 Dave Pacheco Support for frames with whitespace.
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# 10-Sep-2011 Brendan Gregg Created this.
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use strict;
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use Getopt::Long;
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use open qw(:std :utf8);
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# tunables
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my $encoding;
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my $fonttype = "Verdana";
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my $imagewidth = 1200; # max width, pixels
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my $frameheight = 16; # max height is dynamic
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my $fontsize = 12; # base text size
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my $fontwidth = 0.59; # avg width relative to fontsize
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my $minwidth = 0.1; # min function width, pixels
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my $nametype = "Function:"; # what are the names in the data?
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my $countname = "samples"; # what are the counts in the data?
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my $colors = "hot"; # color theme
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my $bgcolors = ""; # background color theme
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my $nameattrfile; # file holding function attributes
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my $timemax; # (override the) sum of the counts
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my $factor = 1; # factor to scale counts by
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my $hash = 0; # color by function name
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my $palette = 0; # if we use consistent palettes (default off)
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my %palette_map; # palette map hash
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my $pal_file = "palette.map"; # palette map file name
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my $stackreverse = 0; # reverse stack order, switching merge end
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my $inverted = 0; # icicle graph
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my $flamechart = 0; # produce a flame chart (sort by time, do not merge stacks)
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my $negate = 0; # switch differential hues
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my $titletext = ""; # centered heading
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my $titledefault = "Flame Graph"; # overwritten by --title
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my $titleinverted = "Icicle Graph"; # " "
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my $searchcolor = "rgb(230,0,230)"; # color for search highlighting
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my $notestext = ""; # embedded notes in SVG
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my $subtitletext = ""; # second level title (optional)
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my $help = 0;
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sub usage {
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die <<USAGE_END;
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USAGE: $0 [options] infile > outfile.svg\n
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--title TEXT # change title text
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--subtitle TEXT # second level title (optional)
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--width NUM # width of image (default 1200)
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--height NUM # height of each frame (default 16)
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--minwidth NUM # omit smaller functions (default 0.1 pixels)
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--fonttype FONT # font type (default "Verdana")
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--fontsize NUM # font size (default 12)
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--countname TEXT # count type label (default "samples")
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--nametype TEXT # name type label (default "Function:")
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--colors PALETTE # set color palette. choices are: hot (default), mem,
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# io, wakeup, chain, java, js, perl, red, green, blue,
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# aqua, yellow, purple, orange
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--bgcolors COLOR # set background colors. gradient choices are yellow
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# (default), blue, green, grey; flat colors use "#rrggbb"
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--hash # colors are keyed by function name hash
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--cp # use consistent palette (palette.map)
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--reverse # generate stack-reversed flame graph
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--inverted # icicle graph
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--flamechart # produce a flame chart (sort by time, do not merge stacks)
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--negate # switch differential hues (blue<->red)
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--notes TEXT # add notes comment in SVG (for debugging)
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--help # this message
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eg,
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$0 --title="Flame Graph: malloc()" trace.txt > graph.svg
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USAGE_END
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}
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GetOptions(
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'fonttype=s' => \$fonttype,
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'width=i' => \$imagewidth,
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'height=i' => \$frameheight,
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'encoding=s' => \$encoding,
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'fontsize=f' => \$fontsize,
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'fontwidth=f' => \$fontwidth,
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'minwidth=f' => \$minwidth,
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'title=s' => \$titletext,
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'subtitle=s' => \$subtitletext,
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'nametype=s' => \$nametype,
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'countname=s' => \$countname,
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'nameattr=s' => \$nameattrfile,
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'total=s' => \$timemax,
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'factor=f' => \$factor,
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'colors=s' => \$colors,
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'bgcolors=s' => \$bgcolors,
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'hash' => \$hash,
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'cp' => \$palette,
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'reverse' => \$stackreverse,
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'inverted' => \$inverted,
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'flamechart' => \$flamechart,
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'negate' => \$negate,
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'notes=s' => \$notestext,
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'help' => \$help,
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) or usage();
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$help && usage();
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# internals
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my $ypad1 = $fontsize * 3; # pad top, include title
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my $ypad2 = $fontsize * 2 + 10; # pad bottom, include labels
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my $ypad3 = $fontsize * 2; # pad top, include subtitle (optional)
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my $xpad = 10; # pad lefm and right
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my $framepad = 1; # vertical padding for frames
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my $depthmax = 0;
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my %Events;
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my %nameattr;
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if ($flamechart && $titletext eq "") {
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$titletext = "Flame Chart";
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}
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if ($titletext eq "") {
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unless ($inverted) {
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$titletext = $titledefault;
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} else {
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$titletext = $titleinverted;
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}
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}
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if ($nameattrfile) {
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# The name-attribute file format is a function name followed by a tab then
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# a sequence of tab separated name=value pairs.
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open my $attrfh, $nameattrfile or die "Can't read $nameattrfile: $!\n";
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while (<$attrfh>) {
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chomp;
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my ($funcname, $attrstr) = split /\t/, $_, 2;
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die "Invalid format in $nameattrfile" unless defined $attrstr;
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$nameattr{$funcname} = { map { split /=/, $_, 2 } split /\t/, $attrstr };
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}
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}
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if ($notestext =~ /[<>]/) {
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die "Notes string can't contain < or >"
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}
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# background colors:
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# - yellow gradient: default (hot, java, js, perl)
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# - green gradient: mem
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# - blue gradient: io, wakeup, chain
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# - gray gradient: flat colors (red, green, blue, ...)
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if ($bgcolors eq "") {
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# choose a default
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if ($colors eq "mem") {
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$bgcolors = "green";
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} elsif ($colors =~ /^(io|wakeup|chain)$/) {
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$bgcolors = "blue";
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} elsif ($colors =~ /^(red|green|blue|aqua|yellow|purple|orange)$/) {
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$bgcolors = "grey";
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} else {
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$bgcolors = "yellow";
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}
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}
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my ($bgcolor1, $bgcolor2);
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if ($bgcolors eq "yellow") {
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$bgcolor1 = "#eeeeee"; # background color gradient start
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$bgcolor2 = "#eeeeb0"; # background color gradient stop
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} elsif ($bgcolors eq "blue") {
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$bgcolor1 = "#eeeeee"; $bgcolor2 = "#e0e0ff";
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} elsif ($bgcolors eq "green") {
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$bgcolor1 = "#eef2ee"; $bgcolor2 = "#e0ffe0";
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} elsif ($bgcolors eq "grey") {
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$bgcolor1 = "#f8f8f8"; $bgcolor2 = "#e8e8e8";
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} elsif ($bgcolors =~ /^#......$/) {
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$bgcolor1 = $bgcolor2 = $bgcolors;
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} else {
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die "Unrecognized bgcolor option \"$bgcolors\""
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}
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# SVG functions
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{ package SVG;
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sub new {
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my $class = shift;
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my $self = {};
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bless ($self, $class);
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return $self;
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}
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sub header {
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my ($self, $w, $h) = @_;
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my $enc_attr = '';
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if (defined $encoding) {
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$enc_attr = qq{ encoding="$encoding"};
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}
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$self->{svg} .= <<SVG;
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<?xml version="1.0"$enc_attr standalone="no"?>
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<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
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<svg version="1.1" width="$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">
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<!-- Flame graph stack visualization. See https://github.com/brendangregg/FlameGraph for latest version, and http://www.brendangregg.com/flamegraphs.html for examples. -->
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<!-- NOTES: $notestext -->
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SVG
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}
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sub include {
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my ($self, $content) = @_;
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$self->{svg} .= $content;
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}
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sub colorAllocate {
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my ($self, $r, $g, $b) = @_;
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return "rgb($r,$g,$b)";
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}
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sub group_start {
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my ($self, $attr) = @_;
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my @g_attr = map {
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exists $attr->{$_} ? sprintf(qq/$_="%s"/, $attr->{$_}) : ()
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} qw(id class);
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push @g_attr, $attr->{g_extra} if $attr->{g_extra};
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if ($attr->{href}) {
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my @a_attr;
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push @a_attr, sprintf qq/xlink:href="%s"/, $attr->{href} if $attr->{href};
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# default target=_top else links will open within SVG <object>
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push @a_attr, sprintf qq/target="%s"/, $attr->{target} || "_top";
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push @a_attr, $attr->{a_extra} if $attr->{a_extra};
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$self->{svg} .= sprintf qq/<a %s>\n/, join(' ', (@a_attr, @g_attr));
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} else {
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$self->{svg} .= sprintf qq/<g %s>\n/, join(' ', @g_attr);
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}
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$self->{svg} .= sprintf qq/<title>%s<\/title>/, $attr->{title}
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if $attr->{title}; # should be first element within g container
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}
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sub group_end {
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my ($self, $attr) = @_;
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$self->{svg} .= $attr->{href} ? qq/<\/a>\n/ : qq/<\/g>\n/;
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}
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sub filledRectangle {
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my ($self, $x1, $y1, $x2, $y2, $fill, $extra) = @_;
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$x1 = sprintf "%0.1f", $x1;
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$x2 = sprintf "%0.1f", $x2;
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my $w = sprintf "%0.1f", $x2 - $x1;
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my $h = sprintf "%0.1f", $y2 - $y1;
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$extra = defined $extra ? $extra : "";
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$self->{svg} .= qq/<rect x="$x1" y="$y1" width="$w" height="$h" fill="$fill" $extra \/>\n/;
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}
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sub stringTTF {
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my ($self, $id, $x, $y, $str, $extra) = @_;
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$x = sprintf "%0.2f", $x;
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$id = defined $id ? qq/id="$id"/ : "";
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$extra ||= "";
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$self->{svg} .= qq/<text $id x="$x" y="$y" $extra>$str<\/text>\n/;
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}
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sub svg {
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my $self = shift;
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return "$self->{svg}</svg>\n";
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}
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1;
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}
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sub namehash {
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# Generate a vector hash for the name string, weighting early over
|
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# later characters. We want to pick the same colors for function
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# names across different flame graphs.
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my $name = shift;
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my $vector = 0;
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my $weight = 1;
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my $max = 1;
|
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my $mod = 10;
|
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# if module name present, trunc to 1st char
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$name =~ s/.(.*?)`//;
|
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foreach my $c (split //, $name) {
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my $i = (ord $c) % $mod;
|
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$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);
|
||
$v2 = rand(1);
|
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$v3 = rand(1);
|
||
}
|
||
|
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# theme palettes
|
||
if (defined $type and $type eq "hot") {
|
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my $r = 205 + int(50 * $v3);
|
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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 $type eq "java") {
|
||
# Handle both annotations (_[j], _[i], ...; which are
|
||
# accurate), as well as input that lacks any annotations, as
|
||
# best as possible. Without annotations, we get a little hacky
|
||
# and match on java|org|com, etc.
|
||
if ($name =~ m:_\[j\]$:) { # jit annotation
|
||
$type = "green";
|
||
} elsif ($name =~ m:_\[i\]$:) { # inline annotation
|
||
$type = "aqua";
|
||
} elsif ($name =~ m:^L?(java|javax|jdk|net|org|com|io|sun)/:) { # Java
|
||
$type = "green";
|
||
} elsif ($name =~ /:::/) { # Java, typical perf-map-agent method separator
|
||
$type = "green";
|
||
} elsif ($name =~ /::/) { # C++
|
||
$type = "yellow";
|
||
} elsif ($name =~ m:_\[k\]$:) { # kernel annotation
|
||
$type = "orange";
|
||
} elsif ($name =~ /::/) { # C++
|
||
$type = "yellow";
|
||
} 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 $type eq "js") {
|
||
# Handle both annotations (_[j], _[i], ...; which are
|
||
# accurate), as well as input that lacks any annotations, as
|
||
# best as possible. Without annotations, we get a little hacky,
|
||
# and match on a "/" with a ".js", etc.
|
||
if ($name =~ m:_\[j\]$:) { # jit annotation
|
||
if ($name =~ m:/:) {
|
||
$type = "green"; # source
|
||
} else {
|
||
$type = "aqua"; # builtin
|
||
}
|
||
} elsif ($name =~ /::/) { # C++
|
||
$type = "yellow";
|
||
} elsif ($name =~ m:/.*\.js:) { # 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 @SortedData;
|
||
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, $line;
|
||
}
|
||
}
|
||
|
||
if ($flamechart) {
|
||
# In flame chart mode, just reverse the data so time moves from left to right.
|
||
@SortedData = reverse @Data;
|
||
} else {
|
||
@SortedData = sort @Data;
|
||
}
|
||
|
||
# process and merge frames
|
||
foreach (@SortedData) {
|
||
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);
|
||
$im->stringTTF(undef, int($imagewidth / 2), $fontsize * 2,
|
||
"ERROR: No valid input provided to flamegraph.pl.");
|
||
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 + 1) * $frameheight) + $ypad1 + $ypad2;
|
||
$imageheight += $ypad3 if $subtitletext ne "";
|
||
my $titlesize = $fontsize + 5;
|
||
my $im = SVG->new();
|
||
my ($black, $vdgrey, $dgrey) = (
|
||
$im->colorAllocate(0, 0, 0),
|
||
$im->colorAllocate(160, 160, 160),
|
||
$im->colorAllocate(200, 200, 200),
|
||
);
|
||
$im->header($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="$bgcolor2" offset="95%" />
|
||
</linearGradient>
|
||
</defs>
|
||
<style type="text/css">
|
||
text { font-family:$fonttype; font-size:${fontsize}px; fill:$black; }
|
||
#search, #ignorecase { opacity:0.1; cursor:pointer; }
|
||
#search:hover, #search.show, #ignorecase:hover, #ignorecase.show { opacity:1; }
|
||
#subtitle { text-anchor:middle; font-color:$vdgrey; }
|
||
#title { text-anchor:middle; font-size:${titlesize}px}
|
||
#unzoom { cursor:pointer; }
|
||
#frames > *:hover { stroke:black; stroke-width:0.5; cursor:pointer; }
|
||
.hide { display:none; }
|
||
.parent { opacity:0.5; }
|
||
</style>
|
||
<script type="text/ecmascript">
|
||
<![CDATA[
|
||
"use strict";
|
||
var details, searchbtn, unzoombtn, matchedtxt, svg, searching, currentSearchTerm, ignorecase, ignorecaseBtn;
|
||
function init(evt) {
|
||
details = document.getElementById("details").firstChild;
|
||
searchbtn = document.getElementById("search");
|
||
ignorecaseBtn = document.getElementById("ignorecase");
|
||
unzoombtn = document.getElementById("unzoom");
|
||
matchedtxt = document.getElementById("matched");
|
||
svg = document.getElementsByTagName("svg")[0];
|
||
searching = 0;
|
||
currentSearchTerm = null;
|
||
|
||
// use GET parameters to restore a flamegraphs state.
|
||
var params = get_params();
|
||
if (params.x && params.y)
|
||
zoom(find_group(document.querySelector('[x="' + params.x + '"][y="' + params.y + '"]')));
|
||
if (params.s) search(params.s);
|
||
}
|
||
|
||
// event listeners
|
||
window.addEventListener("click", function(e) {
|
||
var target = find_group(e.target);
|
||
if (target) {
|
||
if (target.nodeName == "a") {
|
||
if (e.ctrlKey === false) return;
|
||
e.preventDefault();
|
||
}
|
||
if (target.classList.contains("parent")) unzoom();
|
||
zoom(target);
|
||
if (!document.querySelector('.parent')) {
|
||
clearzoom();
|
||
return;
|
||
}
|
||
|
||
// set parameters for zoom state
|
||
var el = target.querySelector("rect");
|
||
if (el && el.attributes && el.attributes.y && el.attributes._orig_x) {
|
||
var params = get_params()
|
||
params.x = el.attributes._orig_x.value;
|
||
params.y = el.attributes.y.value;
|
||
history.replaceState(null, null, parse_params(params));
|
||
}
|
||
}
|
||
else if (e.target.id == "unzoom") clearzoom();
|
||
else if (e.target.id == "search") search_prompt();
|
||
else if (e.target.id == "ignorecase") toggle_ignorecase();
|
||
}, false)
|
||
|
||
// mouse-over for info
|
||
// show
|
||
window.addEventListener("mouseover", function(e) {
|
||
var target = find_group(e.target);
|
||
if (target) details.nodeValue = "$nametype " + g_to_text(target);
|
||
}, false)
|
||
|
||
// clear
|
||
window.addEventListener("mouseout", function(e) {
|
||
var target = find_group(e.target);
|
||
if (target) details.nodeValue = ' ';
|
||
}, false)
|
||
|
||
// ctrl-F for search
|
||
// ctrl-I to toggle case-sensitive search
|
||
window.addEventListener("keydown",function (e) {
|
||
if (e.keyCode === 114 || (e.ctrlKey && e.keyCode === 70)) {
|
||
e.preventDefault();
|
||
search_prompt();
|
||
}
|
||
else if (e.ctrlKey && e.keyCode === 73) {
|
||
e.preventDefault();
|
||
toggle_ignorecase();
|
||
}
|
||
}, false)
|
||
|
||
// functions
|
||
function get_params() {
|
||
var params = {};
|
||
var paramsarr = window.location.search.substr(1).split('&');
|
||
for (var i = 0; i < paramsarr.length; ++i) {
|
||
var tmp = paramsarr[i].split("=");
|
||
if (!tmp[0] || !tmp[1]) continue;
|
||
params[tmp[0]] = decodeURIComponent(tmp[1]);
|
||
}
|
||
return params;
|
||
}
|
||
function parse_params(params) {
|
||
var uri = "?";
|
||
for (var key in params) {
|
||
uri += key + '=' + encodeURIComponent(params[key]) + '&';
|
||
}
|
||
if (uri.slice(-1) == "&")
|
||
uri = uri.substring(0, uri.length - 1);
|
||
if (uri == '?')
|
||
uri = window.location.href.split('?')[0];
|
||
return uri;
|
||
}
|
||
function find_child(node, selector) {
|
||
var children = node.querySelectorAll(selector);
|
||
if (children.length) return children[0];
|
||
}
|
||
function find_group(node) {
|
||
var parent = node.parentElement;
|
||
if (!parent) return;
|
||
if (parent.id == "frames") return node;
|
||
return find_group(parent);
|
||
}
|
||
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 there's any manipulation we want to do to the function
|
||
// name before it's searched, do it here before returning.
|
||
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]").attributes.x.value + 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 * $xpad) / width;
|
||
|
||
// XXX: Workaround for JavaScript float issues (fix me)
|
||
var fudge = 0.0001;
|
||
|
||
unzoombtn.classList.remove("hide");
|
||
|
||
var el = document.getElementById("frames").children;
|
||
for (var i = 0; i < el.length; i++) {
|
||
var e = el[i];
|
||
var a = find_child(e, "rect").attributes;
|
||
var ex = parseFloat(a.x.value);
|
||
var ew = parseFloat(a.width.value);
|
||
var upstack;
|
||
// Is it an ancestor
|
||
if ($inverted == 0) {
|
||
upstack = parseFloat(a.y.value) > ymin;
|
||
} else {
|
||
upstack = parseFloat(a.y.value) < ymin;
|
||
}
|
||
if (upstack) {
|
||
// Direct ancestor
|
||
if (ex <= xmin && (ex+ew+fudge) >= xmax) {
|
||
e.classList.add("parent");
|
||
zoom_parent(e);
|
||
update_text(e);
|
||
}
|
||
// not in current path
|
||
else
|
||
e.classList.add("hide");
|
||
}
|
||
// Children maybe
|
||
else {
|
||
// no common path
|
||
if (ex < xmin || ex + fudge >= xmax) {
|
||
e.classList.add("hide");
|
||
}
|
||
else {
|
||
zoom_child(e, xmin, ratio);
|
||
update_text(e);
|
||
}
|
||
}
|
||
}
|
||
search();
|
||
}
|
||
function unzoom() {
|
||
unzoombtn.classList.add("hide");
|
||
var el = document.getElementById("frames").children;
|
||
for(var i = 0; i < el.length; i++) {
|
||
el[i].classList.remove("parent");
|
||
el[i].classList.remove("hide");
|
||
zoom_reset(el[i]);
|
||
update_text(el[i]);
|
||
}
|
||
search();
|
||
}
|
||
function clearzoom() {
|
||
unzoom();
|
||
|
||
// remove zoom state
|
||
var params = get_params();
|
||
if (params.x) delete params.x;
|
||
if (params.y) delete params.y;
|
||
history.replaceState(null, null, parse_params(params));
|
||
}
|
||
|
||
// search
|
||
function toggle_ignorecase() {
|
||
ignorecase = !ignorecase;
|
||
if (ignorecase) {
|
||
ignorecaseBtn.classList.add("show");
|
||
} else {
|
||
ignorecaseBtn.classList.remove("show");
|
||
}
|
||
reset_search();
|
||
search();
|
||
}
|
||
function reset_search() {
|
||
var el = document.querySelectorAll("#frames rect");
|
||
for (var i = 0; i < el.length; i++) {
|
||
orig_load(el[i], "fill")
|
||
}
|
||
var params = get_params();
|
||
delete params.s;
|
||
history.replaceState(null, null, parse_params(params));
|
||
}
|
||
function search_prompt() {
|
||
if (!searching) {
|
||
var term = prompt("Enter a search term (regexp " +
|
||
"allowed, eg: ^ext4_)"
|
||
+ (ignorecase ? ", ignoring case" : "")
|
||
+ "\\nPress Ctrl-i to toggle case sensitivity", "");
|
||
if (term != null) search(term);
|
||
} else {
|
||
reset_search();
|
||
searching = 0;
|
||
currentSearchTerm = null;
|
||
searchbtn.classList.remove("show");
|
||
searchbtn.firstChild.nodeValue = "Search"
|
||
matchedtxt.classList.add("hide");
|
||
matchedtxt.firstChild.nodeValue = ""
|
||
}
|
||
}
|
||
function search(term) {
|
||
if (term) currentSearchTerm = term;
|
||
|
||
var re = new RegExp(currentSearchTerm, ignorecase ? 'i' : '');
|
||
var el = document.getElementById("frames").children;
|
||
var matches = new Object();
|
||
var maxwidth = 0;
|
||
for (var i = 0; i < el.length; i++) {
|
||
var e = el[i];
|
||
var func = g_to_func(e);
|
||
var rect = find_child(e, "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;
|
||
var params = get_params();
|
||
params.s = currentSearchTerm;
|
||
history.replaceState(null, null, parse_params(params));
|
||
|
||
searchbtn.classList.add("show");
|
||
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;
|
||
});
|
||
// 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.
|
||
var fudge = 0.0001; // JavaScript floating point
|
||
for (var k in keys) {
|
||
var x = parseFloat(keys[k]);
|
||
var w = matches[keys[k]];
|
||
if (x >= lastx + lastw - fudge) {
|
||
count += w;
|
||
lastx = x;
|
||
lastw = w;
|
||
}
|
||
}
|
||
// display matched percent
|
||
matchedtxt.classList.remove("hide");
|
||
var pct = 100 * count / maxwidth;
|
||
if (pct != 100) pct = pct.toFixed(1)
|
||
matchedtxt.firstChild.nodeValue = "Matched: " + pct + "%";
|
||
}
|
||
]]>
|
||
</script>
|
||
INC
|
||
$im->include($inc);
|
||
$im->filledRectangle(0, 0, $imagewidth, $imageheight, 'url(#background)');
|
||
$im->stringTTF("title", int($imagewidth / 2), $fontsize * 2, $titletext);
|
||
$im->stringTTF("subtitle", int($imagewidth / 2), $fontsize * 4, $subtitletext) if $subtitletext ne "";
|
||
$im->stringTTF("details", $xpad, $imageheight - ($ypad2 / 2), " ");
|
||
$im->stringTTF("unzoom", $xpad, $fontsize * 2, "Reset Zoom", 'class="hide"');
|
||
$im->stringTTF("search", $imagewidth - $xpad - 100, $fontsize * 2, "Search");
|
||
$im->stringTTF("ignorecase", $imagewidth - $xpad - 16, $fontsize * 2, "ic");
|
||
$im->stringTTF("matched", $imagewidth - $xpad - 100, $imageheight - ($ypad2 / 2), " ");
|
||
|
||
if ($palette) {
|
||
read_palette();
|
||
}
|
||
|
||
# draw frames
|
||
$im->group_start({id => "frames"});
|
||
while (my ($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, $y2);
|
||
unless ($inverted) {
|
||
$y1 = $imageheight - $ypad2 - ($depth + 1) * $frameheight + $framepad;
|
||
$y2 = $imageheight - $ypad2 - $depth * $frameheight;
|
||
} else {
|
||
$y1 = $ypad1 + $depth * $frameheight;
|
||
$y2 = $ypad1 + ($depth + 1) * $frameheight - $framepad;
|
||
}
|
||
|
||
my $samples = sprintf "%.0f", ($etime - $stime) * $factor;
|
||
(my $samples_txt = $samples) # add commas per perlfaq5
|
||
=~ s/(^[-+]?\d+?(?=(?>(?:\d{3})+)(?!\d))|\G\d{3}(?=\d))/$1,/g;
|
||
|
||
my $info;
|
||
if ($func eq "" and $depth == 0) {
|
||
$info = "all ($samples_txt $countname, 100%)";
|
||
} else {
|
||
my $pct = sprintf "%.2f", ((100 * $samples) / ($timemax * $factor));
|
||
my $escaped_func = $func;
|
||
# clean up SVG breaking characters:
|
||
$escaped_func =~ s/&/&/g;
|
||
$escaped_func =~ s/</</g;
|
||
$escaped_func =~ s/>/>/g;
|
||
$escaped_func =~ s/"/"/g;
|
||
$escaped_func =~ s/_\[[kwij]\]$//; # strip any annotation
|
||
unless (defined $delta) {
|
||
$info = "$escaped_func ($samples_txt $countname, $pct%)";
|
||
} else {
|
||
my $d = $negate ? -$delta : $delta;
|
||
my $deltapct = sprintf "%.2f", ((100 * $d) / ($timemax * $factor));
|
||
$deltapct = $d > 0 ? "+$deltapct" : $deltapct;
|
||
$info = "$escaped_func ($samples_txt $countname, $pct%; $deltapct%)";
|
||
}
|
||
}
|
||
|
||
my $nameattr = { %{ $nameattr{$func}||{} } }; # shallow clone
|
||
$nameattr->{title} ||= $info;
|
||
$im->group_start($nameattr);
|
||
|
||
my $color;
|
||
if ($func eq "--") {
|
||
$color = $vdgrey;
|
||
} elsif ($func eq "-") {
|
||
$color = $dgrey;
|
||
} elsif (defined $delta) {
|
||
$color = color_scale($delta, $maxdelta);
|
||
} elsif ($palette) {
|
||
$color = color_map($colors, $func);
|
||
} else {
|
||
$color = color($colors, $hash, $func);
|
||
}
|
||
$im->filledRectangle($x1, $y1, $x2, $y2, $color, 'rx="2" ry="2"');
|
||
|
||
my $chars = int( ($x2 - $x1) / ($fontsize * $fontwidth));
|
||
my $text = "";
|
||
if ($chars >= 3) { # room for one char plus two dots
|
||
$func =~ s/_\[[kwij]\]$//; # strip any annotation
|
||
$text = substr $func, 0, $chars;
|
||
substr($text, -2, 2) = ".." if $chars < length $func;
|
||
$text =~ s/&/&/g;
|
||
$text =~ s/</</g;
|
||
$text =~ s/>/>/g;
|
||
}
|
||
$im->stringTTF(undef, $x1 + 3, 3 + ($y1 + $y2) / 2, $text);
|
||
|
||
$im->group_end($nameattr);
|
||
}
|
||
$im->group_end();
|
||
|
||
print $im->svg;
|
||
|
||
if ($palette) {
|
||
write_palette();
|
||
}
|
||
|
||
# vim: ts=8 sts=8 sw=8 noexpandtab
|