nurse

% ruby --disable-gems test.rb
{:T_HASH=>1, :T_DATA=>2}
{:T_ARRAY=>1, :T_HASH=>1, :T_DATA=>1}

nurse

require 'fiddle'
def create_large_string(size)
  func = Fiddle::Function.new(Fiddle::Handle::DEFAULT['rb_str_new'], [Fiddle::TYPE_VOIDP,Fiddle::TYPE_LONG], Fiddle::TYPE_VOIDP)
  # returns fast on environments whose malloc delays the actual allocation
  ptr = func.call(nil, size)
end

nurse

2016-09-12 07:02:10 +0900
target 0: ruby 2.4.0dev (2016-07-22 trunk 55727) [x86_64-linux] at "./miniruby55727 -I./lib -I. -I.ext/common --disable-gem"
target 1: built-ruby (ruby 2.4.0dev (2016-09-11) [x86_64-linux]) at "./miniruby -I./lib -I. -I.ext/common  --disable-gem"
measure target: real

-----------------------------------------------------------
app_answer

def ack(m, n)
  if m == 0 then

nurse

#!/usr/bin/env ruby
require 'pp'

files = {'vm.inc' => [], 'insns.def' => []}
current_insn = nil
current_filename = 'vm.inc'
lineno_offset = 0
IO.foreach('vm.inc') do |line|
  case line
  when /^INSN_ENTRY\((\w+)\)/

nurse

 Original:
 
 Performance counter stats for './miniruby -e@v=42; n=100_000_000;while n>0; x=@v; x=@v; x=@v; n-=1;end':

       5675.422561 task-clock (msec)         #    0.998 CPUs utilized
               159 context-switches          #    0.028 K/sec
                 2 cpu-migrations            #    0.000 K/sec
               889 page-faults               #    0.157 K/sec
       16521817067 cycles                    #    2.911 GHz
        4121915626 stalled-cycles-frontend   #   24.95% frontend cycles idle

nurse

#!/usr/bin/env ruby
#
# pid2line.rb
#
# Show source files and line numers of given process's threads
#
# This script works only on Linux.
# https://gist.github.com/nurse/0619b6af90df140508c2
#

nurse

Moved to https://bugs.ruby-lang.org/issues/12474

nurse

% time ./miniruby -e'a=100;i=0;while i<0xffffff;i+=1;a*=557;a+=2;a%=100000;end'
./miniruby -e'a=100;i=0;while i<0xffffff;i+=1;a*=557;a+=2;a%=100000;end'  2.64s user 0.01s system 99% cpu 2.649 total
% ruby -e'puts RubyVM::InstructionSequence.compile(%q{a=100;i=0;while i<0xffffff;i+=1;a*=557;a+=2;a%=
100000;end}).disasm'
== disasm: #<ISeq:<compiled>@<compiled>>================================
== catch table
| catch type: break  st: 0015 ed: 0060 sp: 0000 cont: 0060
| catch type: next   st: 0015 ed: 0060 sp: 0000 cont: 0012
| catch type: redo   st: 0015 ed: 0060 sp: 0000 cont: 0015
|------------------------------------------------------------------------

nurse

resources:
  - type: package
    name: zsh
  - type: package
    name: screen
  - type: package
    name: subversion

  - type: group
    name: <%= user %>

nurse

# p12ファイル内の秘密鍵に対応する公開鍵を表示
openssl pkcs12 -in foo.p12 -nodes | openssl rsa -passin pass: -pubout|openssl rsa -pubin -text

# 証明書を表示
openssl x509 -inform der -in ~/Downloads/ios_distribution.cer -text

openssl genrsa -des3 -out tls.2015.key 2048
openssl req -new -key tls.2015.key -out tls.2015.csr
mv tls.2015.key tls.2015.key.pass
openssl rsa -in tls.2015.key.pass -out tls.2015.key