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Diffstat (limited to 'benchmark/bm_vm_thread_condvar2.rb')
-rw-r--r-- | benchmark/bm_vm_thread_condvar2.rb | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/benchmark/bm_vm_thread_condvar2.rb b/benchmark/bm_vm_thread_condvar2.rb new file mode 100644 index 0000000000..7c8dc19481 --- /dev/null +++ b/benchmark/bm_vm_thread_condvar2.rb @@ -0,0 +1,35 @@ +# many threads, one mutex, many condvars +require 'thread' +m = Mutex.new +cv1 = ConditionVariable.new +cv2 = ConditionVariable.new +max = 1000 +n = 100 +waiting = 0 +scvs = [] +waiters = n.times.map do |i| + start_cv = ConditionVariable.new + scvs << start_cv + start_mtx = Mutex.new + start_mtx.synchronize do + th = Thread.new(start_mtx, start_cv) do |sm, scv| + m.synchronize do + sm.synchronize { scv.signal } + max.times do + cv2.signal if (waiting += 1) == n + cv1.wait(m) + end + end + end + start_cv.wait(start_mtx) + th + end +end +m.synchronize do + max.times do + cv2.wait(m) until waiting == n + waiting = 0 + cv1.broadcast + end +end +waiters.each(&:join) |