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Versions: 93
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Stored size: 1.96 KB
Contents
# -*- encoding: binary -*-
# :enddoc:
$stdout.sync = $stderr.sync = true
$stdin.binmode
$stdout.binmode
$stderr.binmode
require 'unicorn'
module Unicorn::Launcher
# We don't do a lot of standard daemonization stuff:
# * umask is whatever was set by the parent process at startup
# and can be set in config.ru and config_file, so making it
# 0000 and potentially exposing sensitive log data can be bad
# policy.
# * don't bother to chdir("/") here since unicorn is designed to
# run inside APP_ROOT. Unicorn will also re-chdir() to
# the directory it was started in when being re-executed
# to pickup code changes if the original deployment directory
# is a symlink or otherwise got replaced.
def self.daemonize!(options)
cfg = Unicorn::Configurator
$stdin.reopen("/dev/null")
# We only start a new process group if we're not being reexecuted
# and inheriting file descriptors from our parent
unless ENV['UNICORN_FD']
# grandparent - reads pipe, exits when master is ready
# \_ parent - exits immediately ASAP
# \_ unicorn master - writes to pipe when ready
rd, wr = IO.pipe
grandparent = $$
if fork
wr.close # grandparent does not write
else
rd.close # unicorn master does not read
Process.setsid
exit if fork # parent dies now
end
if grandparent == $$
# this will block until HttpServer#join runs (or it dies)
master_pid = (rd.readpartial(16) rescue nil).to_i
unless master_pid > 1
warn "master failed to start, check stderr log for details"
exit!(1)
end
exit 0
else # unicorn master process
options[:ready_pipe] = wr
end
end
# $stderr/$stderr can/will be redirected separately in the Unicorn config
cfg::DEFAULTS[:stderr_path] ||= "/dev/null"
cfg::DEFAULTS[:stdout_path] ||= "/dev/null"
cfg::RACKUP[:daemonized] = true
end
end
Version data entries
93 entries across 91 versions & 11 rubygems