Sha256: b362a1bb9eb98769f9d2317a00293eaf04fd4b61bff40fc617d7a4d4b4feda83
Contents?: true
Size: 1.24 KB
Versions: 34
Compression:
Stored size: 1.24 KB
Contents
module Vagrant
module Util
# This module provies a `safe_exec` method which is a drop-in
# replacement for `Kernel.exec` which addresses a specific issue
# which manifests on OS X 10.5 (GH-51) and perhaps other operating systems.
# This issue causes `exec` to fail if there is more than one system
# thread. In that case, `safe_exec` automatically falls back to
# forking.
class SafeExec
def self.exec(command, *args)
# Create a list of things to rescue from. Since this is OS
# specific, we need to do some defined? checks here to make
# sure they exist.
rescue_from = []
rescue_from << Errno::EOPNOTSUPP if defined?(Errno::EOPNOTSUPP)
rescue_from << Errno::E045 if defined?(Errno::E045)
rescue_from << SystemCallError
fork_instead = false
begin
pid = nil
pid = fork if fork_instead
Kernel.exec(command, *args) if pid.nil?
Process.wait(pid) if pid
rescue *rescue_from
# We retried already, raise the issue and be done
raise if fork_instead
# The error manifested itself, retry with a fork.
fork_instead = true
retry
end
end
end
end
end
Version data entries
34 entries across 31 versions & 10 rubygems