blob: 5a9c4a27bb0802399febb74511664d72d339e3a6 (
plain)
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
61
62
63
64
65
66
|
# Global monotonic clock from Concurrent Ruby 1.0.
# Copyright (c) Jerry D'Antonio -- released under the MIT license.
# Slightly modified; used with permission.
# https://github.com/ruby-concurrency/concurrent-ruby
require 'thread'
class Bundler::ConnectionPool
class_definition = Class.new do
if defined?(Process::CLOCK_MONOTONIC)
# @!visibility private
def get_time
Process.clock_gettime(Process::CLOCK_MONOTONIC)
end
elsif defined?(RUBY_ENGINE) && RUBY_ENGINE == 'jruby'
# @!visibility private
def get_time
java.lang.System.nanoTime() / 1_000_000_000.0
end
else
# @!visibility private
def initialize
@mutex = Mutex.new
@last_time = Time.now.to_f
end
# @!visibility private
def get_time
@mutex.synchronize do
now = Time.now.to_f
if @last_time < now
@last_time = now
else # clock has moved back in time
@last_time += 0.000_001
end
end
end
end
end
##
# Clock that cannot be set and represents monotonic time since
# some unspecified starting point.
#
# @!visibility private
GLOBAL_MONOTONIC_CLOCK = class_definition.new
private_constant :GLOBAL_MONOTONIC_CLOCK
class << self
##
# Returns the current time a tracked by the application monotonic clock.
#
# @return [Float] The current monotonic time when `since` not given else
# the elapsed monotonic time between `since` and the current time
def monotonic_time
GLOBAL_MONOTONIC_CLOCK.get_time
end
end
end
|
