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ruby--ruby/benchmark/vm_thread_condvar1.rb
k0kubun 433af16167 benchmark: drop all bm_ prefix for legacy driver.rb
benchmark/*.rb is only benchmarks now. We don't need prefixes.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63928 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-07-10 13:08:40 +00:00

28 lines
476 B
Ruby

# two threads, two mutex, two condvar ping-pong
require 'thread'
m1 = Mutex.new
m2 = Mutex.new
cv1 = ConditionVariable.new
cv2 = 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