File: vm_thread_condvar1.rb

package info (click to toggle)
ruby3.3 3.3.8-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 153,620 kB
  • sloc: ruby: 1,244,308; ansic: 836,474; yacc: 28,074; pascal: 6,748; sh: 3,913; python: 1,719; cpp: 1,158; makefile: 742; asm: 712; javascript: 394; lisp: 97; perl: 62; awk: 36; sed: 23; xml: 4
file content (28 lines) | stat: -rw-r--r-- 508 bytes parent folder | download | duplicates (3) 
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
 
# two threads, two mutex, two condvar ping-pong
require 'thread'
m1 = Thread::Mutex.new
m2 = Thread::Mutex.new
cv1 = Thread::ConditionVariable.new
cv2 = Thread::ConditionVariable.new
max = 100000
i = 0
wait = nil
m2.synchronize do
  wait = Thread.new do
    m1.synchronize do
      m2.synchronize { cv2.signal }
      while (i += 1) < max
        cv1.wait(m1)
        cv2.signal
      end
    end
  end
  cv2.wait(m2)
end
m1.synchronize do
  while i < max
    cv1.signal
    cv2.wait(m1)
  end
end
wait.join