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|
module Spring
module Watcher
class Polling < Abstract
attr_reader :mtime
def initialize(root, latency)
super
@mtime = 0
@poller = nil
end
def check_stale
synchronize { mark_stale if mtime < compute_mtime }
end
def add(*)
check_stale if @poller
super
end
def start
unless @poller
@poller = Thread.new {
Thread.current.abort_on_exception = true
loop do
Kernel.sleep latency
check_stale
end
}
end
end
def stop
if @poller
@poller.kill
@poller = nil
end
end
def subjects_changed
@mtime = compute_mtime
end
private
def compute_mtime
expanded_files.map { |f| File.mtime(f).to_f }.max || 0
rescue Errno::ENOENT
# if a file does no longer exist, the watcher is always stale.
Float::MAX
end
def expanded_files
files + Dir["{#{directories.map { |d| "#{d}/**/*" }.join(",")}}"]
end
end
end
end
|
