Class: EnvUtil::Debugger

Inherits:
Object
  • Object
show all
Defined in:
lib/envutil.rb

Constant Summary collapse

PRECOMMAND =

sudo -n: --non-interactive

(%[sudo -n] if /darwin/ =~ RUBY_PLATFORM)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, &block) ⇒ Debugger

Returns a new instance of Debugger.



99
100
101
102
 
# File 'lib/envutil.rb', line 99

def initialize(name, &block)
  @name = name
  instance_eval(&block)
end

Instance Attribute Details

#name ⇒ Object

Returns the value of attribute name.



93
94
95
 
# File 'lib/envutil.rb', line 93

def name
  @name
end

Class Method Details

.register(name, &block) ⇒ Object 



95
96
97
 
# File 'lib/envutil.rb', line 95

def self.register(name, &block)
  @list << new(name, &block)
end

.search ⇒ Object 



151
152
153
154
155
156
 
# File 'lib/envutil.rb', line 151

def self.search
  # Cache the result even when no debugger is available, not to probe
  # unusable debuggers repeatedly.
  return @debugger if defined?(@debugger)
  @debugger = @list.find(&:usable?)
end

Instance Method Details

#dump(pid, timeout: 60, reprieve: timeout&.div(4)) ⇒ Object 



108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
 
# File 'lib/envutil.rb', line 108

def dump(pid, timeout: 60, reprieve: timeout&.div(4))
  dpid = start(pid, *command_file(File.join(__dir__, "dump.#{name}")), out: :err)
rescue Errno::ENOENT
  return
else
  return unless dpid
  [[timeout, :TERM], [reprieve, :KILL]].find do |t, sig|
    begin
      return EnvUtil.timeout(t) {Process.wait(dpid)}
    rescue Timeout::Error
      Process.kill(sig, dpid)
    end
  end
  true
end

#spawn(*args, **opts) ⇒ Object 



127
128
129
 
# File 'lib/envutil.rb', line 127

def spawn(*args, **opts)
  super(*PRECOMMAND, *args, **opts)
end

#start(pid, *args) ⇒ Object 



106
 
# File 'lib/envutil.rb', line 106

def start(pid, *args) end

#usable? ⇒ Boolean

Returns:

  • (Boolean) 


104
 
# File 'lib/envutil.rb', line 104

def usable?; false; end