Class: Skylight::Core::GC Private

Inherits:
Object
  • Object
show all
Includes:
Util::Logging
Defined in:
lib/skylight/core/gc.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Defined Under Namespace

Classes: Window

Constant Summary collapse

METHODS =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

[ :enable, :total_time ]
TH_KEY =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

:SK_GC_CURR_WINDOW
MAX_COUNT =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

1000
MAX_TIME =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

30_000_000

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Util::Logging

#config_for_logging, #debug, #error, #fmt, #info, #log, #log_context, #log_env_prefix, #raise_on_error?, #t, #trace, #trace?, #warn

Constructor Details

#initialize(config, profiler) ⇒ GC

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of GC.



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# File 'lib/skylight/core/gc.rb', line 15

def initialize(config, profiler)
  @listeners = []
  @config    = config
  @lock      = Mutex.new
  @time      = 0

  if METHODS.all? { |m| profiler.respond_to?(m) }
    @profiler = profiler
    @time = @profiler.total_time
  else
    debug "disabling GC profiling"
  end
end

Instance Attribute Details

#config ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/skylight/core/gc.rb', line 13

def config
  @config
end

Instance Method Details

#enable ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/skylight/core/gc.rb', line 29

def enable
  @profiler.enable if @profiler
end

#release(win) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/skylight/core/gc.rb', line 62

def release(win)
  @lock.synchronize do
    @listeners.delete(win)
  end
end

#total_time ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Total time in microseconds for GC over entire process lifetime



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# File 'lib/skylight/core/gc.rb', line 34

def total_time
  @profiler ? @profiler.total_time : nil
end

#track ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/skylight/core/gc.rb', line 38

def track
  unless @profiler
    win = Window.new(nil)
  else
    win = Window.new(self)

    @lock.synchronize do
      __update
      @listeners << win

      # Cleanup any listeners that might have leaked
      until @listeners[0].time < MAX_TIME
        @listeners.shift
      end

      if @listeners.length > MAX_COUNT
        @listeners.shift
      end
    end
  end

  win
end

#update ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/skylight/core/gc.rb', line 68

def update
  @lock.synchronize do
    __update
  end

  nil
end