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9581d6c898
Run like so:
$ ../tool/zjit_iongraph.rb ../build-dev/miniruby --zjit-call-threshold=2 tmp/ghbug.rb
false
false
tmp/ghbug.rb:3:in 'Object#doit': this shouldnt ever be nil (RuntimeError)
from tmp/ghbug.rb:10:in '<main>'
W, [2025-12-09T11:00:32.070382 #67400] WARN -- : Command failed with exit status 1
zjit_iongraph_67405.html
$
Then open zjit_iongraph_67405.html with your browser.
39 lines
1.2 KiB
Ruby
Executable File
39 lines
1.2 KiB
Ruby
Executable File
#!/usr/bin/env ruby
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require 'json'
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require 'logger'
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LOGGER = Logger.new($stderr)
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def run_ruby *cmd
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# Find the first --zjit* option and add --zjit-dump-hir-iongraph after it
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zjit_index = cmd.find_index { |arg| arg.start_with?("--zjit") }
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raise "No --zjit option found in command" unless zjit_index
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cmd.insert(zjit_index + 1, "--zjit-dump-hir-iongraph")
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pid = Process.spawn(*cmd)
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_, status = Process.wait2(pid)
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if status.exitstatus != 0
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LOGGER.warn("Command failed with exit status #{status.exitstatus}")
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end
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pid
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end
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usage = "Usage: zjit_iongraph.rb <path_to_ruby> <options>"
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RUBY = ARGV[0] || raise(usage)
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OPTIONS = ARGV[1..]
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pid = run_ruby(RUBY, *OPTIONS)
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functions = Dir["/tmp/zjit-iongraph-#{pid}/fun*.json"].map do |path|
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JSON.parse(File.read(path))
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end
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if functions.empty?
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LOGGER.warn("No iongraph functions found for PID #{pid}")
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end
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json = JSON.dump({version: 1, functions: functions})
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# Get zjit_iongraph.html from the sibling file next to this script
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html = File.read(File.join(File.dirname(__FILE__), "zjit_iongraph.html"))
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html.sub!("{{ IONJSON }}", json)
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output_path = "zjit_iongraph_#{pid}.html"
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File.write(output_path, html)
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puts "Wrote iongraph to #{output_path}"
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