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authork0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2018-07-10 13:08:40 (GMT)
committerk0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2018-07-10 13:08:40 (GMT)
commit433af16167aec949c6345ad41b78b17c440b4a6d (patch)
tree42b9a14817cccef4a57177329381f97a7a2ac75c /benchmark/vm_thread_condvar2.rb
parentf992f4251874a025de09ffecf0f2b8cb984f2201 (diff)
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
Diffstat (limited to 'benchmark/vm_thread_condvar2.rb')
-rw-r--r--benchmark/vm_thread_condvar2.rb35
1 files changed, 35 insertions, 0 deletions
diff --git a/benchmark/vm_thread_condvar2.rb b/benchmark/vm_thread_condvar2.rb
new file mode 100644
index 0000000..7c8dc19
--- /dev/null
+++ b/benchmark/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)