posixtimer

posixtimer v0.1

[e-mail]

Released under the Ruby license

12.09.05

Things you can do with a posixtimer:

timer = Posix::Timer.new

Arm the timer for 10 seconds

begin

timer.arm(10.0)

# ..do something

rescue SignalException

# The timer times out here

end

Specify which type of SIGNAL to use:

Posix::Timer.new("ALRM") # default

Posix::Timer.new("USR1")

...

Pass a block, and it will be called upon timeout

a = Posix::Timer.new do

puts "hi"

raise MyCustomException

end

a.arm(5.0)

sleep 10.0

=> "hi"

MyCustomException is raised

Caveats

The Posix::Timer instance uses POSIX signals to trigger

the timeouts. This may conflict with other signals you wish to

use in your application.

Passing a block to the constructor will perform a Signal.trap on

the signal. This may override an existing Signal.trap. In a future

version I intend to rollback the previous trap context.

Multiple timers using the same signal may conflict.