module Aw
Namespace for the Aw
library.
@example Computes ‘6 * 7` in a sub-process and returns `42` to the current process.
Aw.fork! { 6 * 7 } # => 42
@example Computes ‘6 * 7` in a sub-process and returns `true` to the current process if no exception is thrown.
Aw.fork? { 6 * 7 } # => true
@api public
Public Class Methods
Runs the block inside a sub-process, and returns the computed value.
@param block [Proc] The code to run in a sub-process.
@example Computes ‘6 * 7` in a sub-process and returns `42` to the current process.
Aw.fork! { 6 * 7 } # => 42
@example Computes ‘nil + 1` in a sub-process and raises `NoMethodError` to the current process.
Aw.fork! { nil + 1 } # => raise NoMethodError (undefined method `+' for nil:NilClass)
@raise [Exception] Exceptions raised in a block of code are propagated. @return [#object_id] Returns the value that has been returned in the block.
# File lib/aw.rb, line 25 def self.fork!(&block) read, write = ::IO.pipe Fork.new(read, write).call(&block) end
Runs the block inside a sub-process, and returns ‘true` if no exception is thrown. Otherwise when an exception is raised, `false` is returned.
@param block [Proc] The code to run in a sub-process.
@example Computes ‘6 * 7` in a sub-process and returns `true` to the current process.
Aw.fork? { 6 * 7 } # => true
@example Computes ‘nil + 1` in a sub-process and returns `false` to the current process.
Aw.fork? { nil + 1 } # => false
@return [Boolean] Returns ‘true` if stat is successful, `false` if not.
# File lib/aw.rb, line 42 def self.fork?(&block) pid = ::Process.fork(&block) _, status = ::Process.wait2(pid) status.success? end