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dfbdaa28a5
Introduce `--profile` support to the benchmark helper script, which will invoke `perf` on Linux. Additionally, add a `--flamegraph` output option based on that.
35 lines
680 B
Perl
Executable File
35 lines
680 B
Perl
Executable File
#!/usr/bin/perl -w
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#
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# stackcollapse-instruments.pl
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#
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# Parses a file containing a call tree as produced by XCode Instruments
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# (Edit > Deep Copy) and produces output suitable for flamegraph.pl.
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#
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# USAGE: ./stackcollapse-instruments.pl infile > outfile
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use strict;
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my @stack = ();
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<>;
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foreach (<>) {
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chomp;
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/\d+\.\d+ (?:min|s|ms)\s+\d+\.\d+%\s+(\d+(?:\.\d+)?) (min|s|ms)\t \t(\s*)(.+)/ or die;
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my $func = $4;
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my $depth = length ($3);
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$stack [$depth] = $4;
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foreach my $i (0 .. $depth - 1) {
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print $stack [$i];
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print ";";
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}
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my $time = 0 + $1;
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if ($2 eq "min") {
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$time *= 60*1000;
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} elsif ($2 eq "s") {
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$time *= 1000;
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}
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printf("%s %.0f\n", $func, $time);
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}
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