Method: EventMachine::DeferrableChildProcess.open

Defined in:
lib/em/processes.rb

.open(cmd) ⇒ Object

Sugars a common use-case involving forked child processes.

open takes a String argument containing an shell command

string (including arguments if desired). #open immediately returns an EventMachine::Deferrable object, without blocking.

It also invokes EventMachine#popen to run the passed-in command in a forked child process.

When the forked child terminates, the Deferrable that

open calls its callbacks, passing the data returned

from the child process.



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# File 'lib/em/processes.rb', line 60

def self.open cmd
  EventMachine.popen( cmd, DeferrableChildProcess )
end