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require 'childprocess/version'
require 'childprocess/errors'
require 'childprocess/abstract_process'
require 'childprocess/abstract_io'
require 'childprocess/process_spawn_process'
require "fcntl"
require 'logger'
module ChildProcess
@posix_spawn = false
class << self
attr_writer :logger
def new(*args)
case os
when :macosx, :linux, :solaris, :bsd, :cygwin, :aix
Unix::Process.new(*args)
when :windows
Windows::Process.new(*args)
else
raise Error, "unsupported platform #{platform_name.inspect}"
end
end
alias_method :build, :new
def logger
return @logger if defined?(@logger) and @logger
@logger = Logger.new($stderr)
@logger.level = $DEBUG ? Logger::DEBUG : Logger::INFO
@logger
end
def platform
os
end
def platform_name
@platform_name ||= "#{arch}-#{os}"
end
def unix?
!windows?
end
def linux?
os == :linux
end
def jruby?
RUBY_ENGINE == 'jruby'
end
def windows?
os == :windows
end
def posix_spawn_chosen_explicitly?
@posix_spawn || %w[1 true].include?(ENV['CHILDPROCESS_POSIX_SPAWN'])
end
def posix_spawn?
false
end
#
# Set this to true to enable experimental use of posix_spawn.
#
def posix_spawn=(bool)
@posix_spawn = bool
end
def os
return :windows if ENV['FAKE_WINDOWS'] == 'true'
@os ||= (
require "rbconfig"
host_os = RbConfig::CONFIG['host_os'].downcase
case host_os
when /linux/
:linux
when /darwin|mac os/
:macosx
when /mswin|msys|mingw32/
:windows
when /cygwin/
:cygwin
when /solaris|sunos/
:solaris
when /bsd|dragonfly/
:bsd
when /aix/
:aix
else
raise Error, "unknown os: #{host_os.inspect}"
end
)
end
def arch
@arch ||= (
host_cpu = RbConfig::CONFIG['host_cpu'].downcase
case host_cpu
when /i[3456]86/
if workaround_older_macosx_misreported_cpu?
# Workaround case: older 64-bit Darwin Rubies misreported as i686
"x86_64"
else
"i386"
end
when /amd64|x86_64/
"x86_64"
when /ppc|powerpc/
"powerpc"
else
host_cpu
end
)
end
#
# By default, a child process will inherit open file descriptors from the
# parent process. This helper provides a cross-platform way of making sure
# that doesn't happen for the given file/io.
#
def close_on_exec(file)
if file.respond_to?(:close_on_exec=)
file.close_on_exec = true
else
raise Error, "not sure how to set close-on-exec for #{file.inspect} on #{platform_name.inspect}"
end
end
private
def warn_once(msg)
@warnings ||= {}
unless @warnings[msg]
@warnings[msg] = true
logger.warn msg
end
end
# Workaround: detect the situation that an older Darwin Ruby is actually
# 64-bit, but is misreporting cpu as i686, which would imply 32-bit.
#
# @return [Boolean] `true` if:
# (a) on Mac OS X
# (b) actually running in 64-bit mode
def workaround_older_macosx_misreported_cpu?
os == :macosx && is_64_bit?
end
# @return [Boolean] `true` if this Ruby represents `1` in 64 bits (8 bytes).
def is_64_bit?
1.size == 8
end
end # class << self
end # ChildProcess
if ChildProcess.windows?
require 'childprocess/windows'
else
require 'childprocess/unix'
end
|
