diff options
| author | shugo <shugo@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-11-20 03:01:55 +0000 |
|---|---|---|
| committer | shugo <shugo@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-11-20 03:01:55 +0000 |
| commit | 8d68f422dc1a42453fabd697f004e35c618ce3ea (patch) | |
| tree | 80ebfcafddf9bd9b52113b76943c55671788cddb /lib/monitor.rb | |
| parent | 59676f6d030ff06d6e577860150ed1aa3aa1046a (diff) | |
lib/monitor.rb: prevent to initialize MonitorMixin twice
Suggested by Benoit Daloze. [ruby-core:88504] [Feature #15000]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65822 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/monitor.rb')
| -rw-r--r-- | lib/monitor.rb | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/monitor.rb b/lib/monitor.rb index 288ed755ea..86c779f184 100644 --- a/lib/monitor.rb +++ b/lib/monitor.rb @@ -251,9 +251,12 @@ module MonitorMixin # Initializes the MonitorMixin after being included in a class or when an # object has been extended with the MonitorMixin def mon_initialize + if defined?(@mon_mutex) + raise ThreadError, "already initialized" + end + @mon_mutex = Thread::Mutex.new @mon_owner = nil @mon_count = 0 - @mon_mutex = Thread::Mutex.new end def mon_check_owner |