Sha256: d78cd4533c5d7e80c1eff7f660b6c09fe53e5f7c719408eecef909cdc92d63ae
Contents?: true
Size: 954 Bytes
Versions: 33
Compression:
Stored size: 954 Bytes
Contents
module Memory
WORD_SIZE = 8
OBJ_SIZE = 40 # some are smaller
OBJ_OVERHEAD = WORD_SIZE + OBJ_SIZE
def self.size(obj)
return WORD_SIZE if obj.is_a?(Fixnum)
case obj
when String
obj.size
when Array
obj.size * WORD_SIZE
when Hash
obj.size * WORD_SIZE * 2
#when Enumerable
# result = 0
# obj.each do |ref|
# result += WORD_SIZE
# end
# result
else
0
end + OBJ_OVERHEAD
rescue => e
puts "failed to get object size for #{obj.inspect}: #{e}"
return OBJ_OVERHEAD
end
end
module ObjectSpace
def self.memory_stats(*args)
stats = {}
self.each_object do |obj|
stats[obj.class] ||= []
stats[obj.class] << Memory.size(obj)
end
stats.map do |cls, sizes|
cnt = sizes.length
sum = sizes.reduce(:+)
avg = sum / cnt
[cls, [cnt, avg, sum]]
end.sort_by do |cls, sizes|
sizes[2]
end.reverse
end
end
Version data entries
33 entries across 33 versions & 2 rubygems