/usr/lib/ruby/vendor_ruby/thread_order/mutex.rb is in ruby-thread-order 1.1.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | class ThreadOrder
Mutex = if defined? ::Mutex
# On 1.9 and up, this is in core, so we just use the real one
::Mutex
else
# On 1.8.7, it's in the stdlib.
# We don't want to load the stdlib, b/c this is a test tool, and can affect the test environment,
# causing tests to pass where they should fail.
#
# So we're transcribing/modifying it from https://github.com/ruby/ruby/blob/v1_8_7_374/lib/thread.rb#L56
# Some methods we don't need are deleted.
# Anything I don't understand (there's quite a bit, actually) is left in.
Class.new do
def initialize
@waiting = []
@locked = false;
@waiting.taint
self.taint
end
def lock
while (Thread.critical = true; @locked)
@waiting.push Thread.current
Thread.stop
end
@locked = true
Thread.critical = false
self
end
def unlock
return unless @locked
Thread.critical = true
@locked = false
begin
t = @waiting.shift
t.wakeup if t
rescue ThreadError
retry
end
Thread.critical = false
begin
t.run if t
rescue ThreadError
end
self
end
def synchronize
lock
begin
yield
ensure
unlock
end
end
end
end
end
|