Class: GetProcessMem

Inherits:
Object
  • Object
show all
Defined in:
lib/get_process_mem.rb,
lib/get_process_mem/version.rb

Overview

Cribbed from Unicorn Worker Killer, thanks!

Constant Summary collapse

KB_TO_BYTE =

2**10 = 1024

1024
MB_TO_BYTE =

1024**2 = 1_048_576

1_048_576
GB_TO_BYTE =

1024**3 = 1_073_741_824

1_073_741_824
CONVERSION = 
{ "kb" => KB_TO_BYTE, "mb" => MB_TO_BYTE, "gb" => GB_TO_BYTE}
MEM_TYPE =

en.wikipedia.org/wiki/Resident_set_size

"rss"
VERSION = 
"0.0.2"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(pid = Process.pid, mem_type = MEM_TYPE) ⇒ GetProcessMem

Returns a new instance of GetProcessMem.



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# File 'lib/get_process_mem.rb', line 12

def initialize(pid = Process.pid, mem_type = MEM_TYPE)
  @process_file = Pathname.new "/proc/#{pid}/status"
  @pid          = pid
  @linux        = @process_file.exist?
  self.mem_type = mem_type
end

Instance Attribute Details

#pid ⇒ Object (readonly)

Returns the value of attribute pid.



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# File 'lib/get_process_mem.rb', line 10

def pid
  @pid
end

Instance Method Details

#bytes ⇒ Object 



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# File 'lib/get_process_mem.rb', line 23

def bytes
  memory =   linux_memory if linux?
  memory ||= ps_memory
end

#gb(b = bytes) ⇒ Object 



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# File 'lib/get_process_mem.rb', line 36

def gb(b = bytes)
  b.fdiv(GB_TO_BYTE)
end

#inspect ⇒ Object 



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# File 'lib/get_process_mem.rb', line 40

def inspect
  b = bytes
  "#<#{self.class}:0x%08x @mb=#{mb b } @gb=#{gb b } @kb=#{kb b } @bytes=#{b}>" % (object_id * 2)
end

#kb(b = bytes) ⇒ Object 



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# File 'lib/get_process_mem.rb', line 28

def kb(b = bytes)
  b.fdiv(KB_TO_BYTE)
end

#linux? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/get_process_mem.rb', line 19

def linux?
  @linux
end

#mb(b = bytes) ⇒ Object 



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# File 'lib/get_process_mem.rb', line 32

def mb(b = bytes)
  b.fdiv(MB_TO_BYTE)
end

#mem_type ⇒ Object 



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# File 'lib/get_process_mem.rb', line 45

def mem_type
  @mem_type
end

#mem_type=(mem_type) ⇒ Object 



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# File 'lib/get_process_mem.rb', line 49

def mem_type=(mem_type)
  @mem_type = mem_type.downcase
end