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19 lines
430 B
Ruby
19 lines
430 B
Ruby
require 'objspace'
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require 'meminfo/ext'
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# MemInfo gives a handful of methods allowing inspection of process memory use.
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module MemInfo
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module_function
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class ProcessNotFound < StandardError; end
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def rss(pid = Process.pid)
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Integer(ps_rss(pid)) * 1024
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rescue TypeError
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raise ProcessNotFound, pid
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end
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private def ps_rss(pid)
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`ps ax -o rss,pid`.each_line.grep(/^\s*(\d+)\s+#{pid}$/) { $1 }.first
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end
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end
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