Class: WithAdvisoryLock::Flock
- Inherits:
-
Base
- Object
- Base
- WithAdvisoryLock::Flock
show all
- Defined in:
- lib/with_advisory_lock/flock.rb
Instance Attribute Summary
Attributes inherited from Base
#connection, #lock_name, #timeout_seconds
Instance Method Summary
collapse
Methods inherited from Base
#already_locked?, #initialize, lock_stack, #lock_str, #stable_hashcode, #unique_column_name, #with_advisory_lock_if_needed, #yield_with_lock, #yield_with_lock_and_timeout
Instance Method Details
#file_io ⇒ Object
15
16
17
18
19
20
|
# File 'lib/with_advisory_lock/flock.rb', line 15
def file_io
@file_io ||= begin
FileUtils.touch(filename)
File.open(filename, 'r+')
end
end
|
#filename ⇒ Object
6
7
8
9
10
11
12
13
|
# File 'lib/with_advisory_lock/flock.rb', line 6
def filename
@filename ||= begin
safe = lock_str.to_s.gsub(/[^a-z0-9]/i, '')
fn = ".lock-#{safe}-#{stable_hashcode(lock_str)}"
ENV['FLOCK_DIR'] ? File.expand_path(fn, ENV['FLOCK_DIR']) : fn
end
end
|
#release_lock ⇒ Object
26
27
28
|
# File 'lib/with_advisory_lock/flock.rb', line 26
def release_lock
0 == file_io.flock(File::LOCK_UN)
end
|
#try_lock ⇒ Object
22
23
24
|
# File 'lib/with_advisory_lock/flock.rb', line 22
def try_lock
0 == file_io.flock(File::LOCK_EX|File::LOCK_NB)
end
|