samuelkadolph

def replace(path, pattern, replacement)
  File.open(path, "r+") do |file|
    contents = file.read

    file.truncate(0)
    file.pos = 0

    file << contents.gsub(pattern, replacement)
  end
end

samuelkadolph

#!/usr/bin/env ruby

require "date"
require "digest/md5"
require "erb"
require "optparse"
require "ostruct"
require "shellwords"
require "tempfile"

samuelkadolph

#include <pthread.h>
#include <stdio.h>

static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

extern void __wait() {
	printf("__wait pthread_mutex_lock # => %d\n", pthread_mutex_lock(&mutex));
	printf("__wait pthread_cond_wait # => %d\n", pthread_cond_wait(&cond, &mutex));
	printf("__wait pthread_mutex_unlock # => %d\n", pthread_mutex_unlock(&mutex));

samuelkadolph

$ sudo lsof -p 26564
COMMAND   PID USER   FD   TYPE             DEVICE  SIZE/OFF     NODE NAME
ruby    26564 root  cwd    DIR              202,1      4096   524302 APP_PATH/releases/20120726200801
ruby    26564 root  rtd    DIR              202,1      4096        2 /
ruby    26564 root  txt    REG              202,1   7265143   279257 /usr/lib/ruby/1.9.3-p194/bin/ruby
ruby    26564 root  mem    REG              202,1    101192    20884 /lib/x86_64-linux-gnu/libresolv-2.13.so
ruby    26564 root  mem    REG              202,1     31120    20306 /lib/x86_64-linux-gnu/libnss_dns-2.13.so
ruby    26564 root  mem    REG              202,1     88384     3968 /lib/x86_64-linux-gnu/libgcc_s.so.1
ruby    26564 root  mem    REG              202,1      5920   278994 /usr/lib/ruby/1.9.3-p194/lib/ruby/1.9.1/x86_64-linux/fiber.so
ruby    26564 root  mem    REG              202,1      6120   279010 /usr/lib/ruby/1.9.3-p194/lib/ruby/1.9.1/x86_64-linux/digest/md5.so

samuelkadolph

D, [2012-07-19T03:46:53.479610 #22645] DEBUG -- : waiting 4.0s after suspend/hibernation
I, [2012-07-19T03:46:48.494536 #28377]  INFO -- : Rainbows! ThreadPool worker_connections=100
E, [2012-07-19T03:46:47.459752 #22645] ERROR -- : reaped #<Process::Status: pid 22656 SIGKILL (signal 9)> worker=0
E, [2012-07-19T03:46:47.439877 #22645] ERROR -- : worker=0 PID:22656 timeout (7s > 6s), killing
D, [2012-07-19T03:45:11.205523 #14678] DEBUG -- : waiting 4.0s after suspend/hibernation
I, [2012-07-19T03:45:06.220187 #20041]  INFO -- : Rainbows! ThreadPool worker_connections=100
E, [2012-07-19T03:45:05.185902 #14678] ERROR -- : reaped #<Process::Status: pid 14689 SIGKILL (signal 9)> worker=0
E, [2012-07-19T03:45:05.167189 #14678] ERROR -- : worker=0 PID:14689 timeout (7s > 6s), killing
D, [2012-07-19T03:42:08.010851 #30981] DEBUG -- : waiting 4.0s after suspend/hibernation
I, [2012-07-19T03:42:03.025937 #3666]  INFO -- : Rainbows! ThreadPool worker_connections=100

samuelkadolph

  * json (1.7.3)
  * kgio (2.7.4)
  * linecache19 (0.5.12)
  * mongrel (1.2.0.pre2)
  * mysql2 (0.2.6)
  * nokogiri (1.5.5)
  * raindrops (0.10.0)
  * unicorn (4.3.1)

samuelkadolph

class String
  def parse_unicode
    dup.parse_unicode!
  end

  def parse_unicode!
    gsub!(/\\u([0-9a-fA-F]{4})/) { [$1.to_i(16)].pack("U") }
  end
end

samuelkadolph

method(:foo).to_java.source_location(Thread.current.to_java.getContext())

samuelkadolph

require "ffi"

class ULLEnum < FFI::Enum
  def native_type
    FFI::Type::ULONG_LONG
  end
end

class MachMsgHeader < FFI::Struct
  layout :bits, :uint, :size, :uint, :remote_port, :uint, :local_port, :uint, :reserved, :uint, :id, :int

samuelkadolph

require "ffi"

module GetPass
  extend FFI::Library

  ffi_lib "libc"
  attach_function :getpass, [:string], :string
end

GetPass.getpass("Prompt: ") # => "secret"