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ruby--ruby/benchmark/bm_vm_thread_mutex1.rb
k0kubun 8068d34cfe Revert "benchmark/*.yml: convert from benchmark/bm_*.rb"
This reverts r63900.

Having single-execution benchmark as a normal Ruby script is preferred
by ko1. I'm not a big fan of having inconsistent benchmark formats, but
I can understand some benefits of it.

common.mk: remove obsolsted benchmark-each PHONY declaration, support
running Ruby scripts added by this commit.

README.md: follow ARGS change

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63926 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-07-10 13:05:29 +00:00

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Ruby

# one thread, one mutex (no contention)
require 'thread'
m = Thread::Mutex.new
r = 0
max = 2000
lmax = max * max
(1..1).map{
Thread.new{
i = 0
while i<lmax
i += 1
m.synchronize{
r += 1
}
end
}
}.each{|e|
e.join
}
raise r.to_s if r != max * max