Class: Homebrew::DevCmd::Prof Private

Inherits:
AbstractCommand show all
Defined in:
dev-cmd/prof.rb,
sorbet/rbi/dsl/homebrew/dev_cmd/prof.rbi

This class is part of a private API. This class may only be used in the Homebrew/brew repository. Third parties should avoid using this class if possible, as it may be removed or changed without warning.

Defined Under Namespace

Classes: Args

Instance Method Summary collapse

Methods inherited from AbstractCommand

command, command_name, dev_cmd?, #initialize, parser

Constructor Details

This class inherits a constructor from Homebrew::AbstractCommand

Instance Method Details

#args ⇒ Homebrew::DevCmd::Prof::Args

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



10
 
# File 'sorbet/rbi/dsl/homebrew/dev_cmd/prof.rbi', line 10

def args; end

#run ⇒ void

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

This method returns an undefined value.



22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
 
# File 'dev-cmd/prof.rb', line 22

def run
  Homebrew.install_bundler_gems!(groups: ["prof"], setup_path: false)

  brew_rb = (HOMEBREW_LIBRARY_PATH/"brew.rb").resolved_path
  FileUtils.mkdir_p "prof"
  cmd = args.named.first

  case Commands.path(cmd)&.extname
  when ".rb"
    # expected file extension so we do nothing
  when ".sh"
    raise UsageError, <<~EOS
      `#{cmd}` is a Bash command!
      Try `hyperfine` for benchmarking instead.
    EOS
  else
    raise UsageError, "`#{cmd}` is an unknown command!"
  end

  Homebrew.setup_gem_environment!

  if args.stackprof?
    # odeprecated. vernier is better in every way
    with_env HOMEBREW_STACKPROF: "1" do
      system(*HOMEBREW_RUBY_EXEC_ARGS, brew_rb, *args.named)
    end
    output_filename = "prof/d3-flamegraph.html"
    safe_system "stackprof --d3-flamegraph prof/stackprof.dump > #{output_filename}"
    exec_browser output_filename
  elsif args.vernier?
    output_filename = "prof/vernier.json"
    Process::UID.change_privilege(Process.euid) if Process.euid != Process.uid
    safe_system "vernier", "run", "--output=#{output_filename}", "--allocation_sample_rate=500", "--",
                RUBY_PATH, brew_rb, *args.named
    ohai "Profiling complete!"
    puts "Upload the results from #{output_filename} to:"
    puts "  #{Formatter.url("https://vernier.prof")}"
  else
    output_filename = "prof/call_stack.html"
    safe_system "ruby-prof", "--printer=call_stack", "--file=#{output_filename}", brew_rb, "--", *args.named
    exec_browser output_filename
  end
rescue OptionParser::InvalidOption => e
  ofail e

  # The invalid option could have been meant for the subcommand.
  # Suggest `brew prof list -r` -> `brew prof -- list -r`
  args = ARGV - ["--"]
  puts "Try `brew prof -- #{args.join(" ")}` instead."
end