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Idea: memsize_of() info for each classes. #12

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Idea: memsize_of() info for each classes. #12

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23 changes: 17 additions & 6 deletions lib/sigdump.rb
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Original file line number Diff line number Diff line change
@@ -1,3 +1,9 @@
begin
require 'objspace'
rescue LoadError
# skip
end

module Sigdump
VERSION = "0.2.4"

Expand All @@ -11,11 +17,12 @@ def self.setup(signal=ENV['SIGDUMP_SIGNAL'] || 'SIGCONT', path=ENV['SIGDUMP_PATH
end

def self.dump(path=ENV['SIGDUMP_PATH'])
p :dump
_open_dump_path(path) do |io|
io.write "Sigdump at #{Time.now} process #{Process.pid} (#{$0})\n"
dump_all_thread_backtrace(io)
dump_gc_stat(io)
dump_object_count(io)
dump_object_stat(io)
dump_gc_profiler_result(io)
end
end
Expand Down Expand Up @@ -59,7 +66,7 @@ def self.dump_backtrace(thread, io)
nil
end

def self.dump_object_count(io)
def self.dump_object_stat(io)
if defined?(ObjectSpace.count_objects)
# ObjectSpace doesn't work in JRuby

Expand All @@ -71,10 +78,14 @@ def self.dump_object_count(io)
string_size = 0
array_size = 0
hash_size = 0
cmap = {}
cmap = Hash.new{|h, k| h[k] = [0, 0]} # cnt, size
ObjectSpace.each_object {|o|
c = o.class
cmap[c] = (cmap[c] || 0) + 1
entry = cmap[c]
entry[0] += 1
# Note: memsize_of() is only a hint, not *correct* info.
entry[1] += ObjectSpace.memsize_of(o)

if c == String
string_size += o.bytesize
elsif c == Array
Expand All @@ -85,8 +96,8 @@ def self.dump_object_count(io)
}

io.write " All objects:\n"
cmap.sort_by {|k,v| -v }.each {|k,v|
io.write "%10s: %s\n" % [_fn(v), k]
cmap.sort_by {|k,(c,s)| -s}.each {|k,(c,s)|
io.write "%10s: %s (%s)\n" % [_fn(c), k, _fn(s)]
}

io.write " String #{_fn(string_size)} bytes\n"
Expand Down