class method

ZJIT.dump_exit_locations

dump_exit_locations(filename)

# File tmp/rubies/ruby-4.0.0/zjit.rb, line 140
def dump_exit_locations(filename)
  unless trace_exit_locations_enabled?
    raise ArgumentError, "--zjit-trace-exits must be enabled to use dump_exit_locations."
  end

  File.open(filename, "wb") do |file|
    Marshal.dump(RubyVM::ZJIT.exit_locations, file)
    file.size
  end
end

Marshal dumps exit locations to the given filename.

Usage:

In a script call:

Example

RubyVM::ZJIT.dump_exit_locations("my_file.dump")

Then run the file with the following options:

ruby --zjit --zjit-stats --zjit-trace-exits test.rb

Once the code is done running, use Stackprof to read the dump file. See Stackprof documentation for options.