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{% skip_file if flag?(:win32) %} # FIXME: enable after #11647
{% if flag?(:musl) %}
# FIXME: These thread specs occasionally fail on musl/alpine based ci, so
# they're disabled for now to reduce noise.
# See https://github.com/crystal-lang/crystal/issues/8738
pending Thread::Mutex
{% skip_file %}
{% end %}
require "spec"
describe Thread::Mutex do
it "synchronizes" do
a = 0
mutex = Thread::Mutex.new
threads = 10.times.map do
Thread.new do
mutex.synchronize { a += 1 }
end
end.to_a
threads.each(&.join)
a.should eq(10)
end
it "won't lock recursively" do
mutex = Thread::Mutex.new
mutex.try_lock.should be_true
mutex.try_lock.should be_false
expect_raises(RuntimeError, "pthread_mutex_lock: ") { mutex.lock }
mutex.unlock
end
it "won't unlock from another thread" do
mutex = Thread::Mutex.new
mutex.lock
expect_raises(RuntimeError, "pthread_mutex_unlock: ") do
Thread.new { mutex.unlock }.join
end
mutex.unlock
end
end
|
