Class: Quebert::Support::PidFile
- Inherits:
-
Object
- Object
- Quebert::Support::PidFile
- Defined in:
- lib/quebert/support/pid_file.rb
Overview
Deal with all of our pid file stuff
Constant Summary collapse
- ProcessRunning =
Class.new(RuntimeError)
Instance Attribute Summary collapse
-
#path ⇒ Object
readonly
Returns the value of attribute path.
Class Method Summary collapse
-
.read(file) ⇒ Object
Read pids and turn them into ints.
-
.running?(pid) ⇒ Boolean
Tells us if a current process is running.
Instance Method Summary collapse
-
#initialize(path) ⇒ PidFile
constructor
A new instance of PidFile.
- #write! ⇒ Object
Constructor Details
#initialize(path) ⇒ PidFile
Returns a new instance of PidFile.
11 12 13 |
# File 'lib/quebert/support/pid_file.rb', line 11 def initialize(path) @path = path end |
Instance Attribute Details
#path ⇒ Object (readonly)
Returns the value of attribute path.
7 8 9 |
# File 'lib/quebert/support/pid_file.rb', line 7 def path @path end |
Class Method Details
.read(file) ⇒ Object
Read pids and turn them into ints
20 21 22 23 24 25 26 |
# File 'lib/quebert/support/pid_file.rb', line 20 def self.read(file) if File.file?(file) && pid = File.read(file) pid.to_i else nil end end |
.running?(pid) ⇒ Boolean
Tells us if a current process is running
29 30 31 32 33 34 35 |
# File 'lib/quebert/support/pid_file.rb', line 29 def self.running?(pid) Process.getpgid(pid) != -1 rescue Errno::EPERM true rescue Errno::ESRCH false end |
Instance Method Details
#write! ⇒ Object
15 16 17 |
# File 'lib/quebert/support/pid_file.rb', line 15 def write! remove_stale and write end |