variable.c (rb_autoload_load): There is a race condition while
autoloading. When two or more threads touch a single autoloaded
constant at a time, one of them does the require, but others
behave oddly. To fix this situation we now refrain from
deleting the autoload table while someone is doing the autoload.
That deletion is deferred to a point where a require ended
successfully. Doing so make it possible for multiple threads to
enter autoloading at the same time but the require is protected
against multiple simultaneous entrance anyway so all but one
thread gets blocked at that point. So with it, touching a
constant that gets autoloaded cause those threads to block until
there is another one that does the same thing. [ruby-core:36308] (#921)
Added by shyouhei (Shyouhei Urabe) almost 13 years ago
variable.c (rb_autoload_load): There is a race condition while
autoloading. When two or more threads touch a single autoloaded
constant at a time, one of them does the require, but others
behave oddly. To fix this situation we now refrain from
deleting the autoload table while someone is doing the autoload.
That deletion is deferred to a point where a require ended
successfully. Doing so make it possible for multiple threads to
enter autoloading at the same time but the require is protected
against multiple simultaneous entrance anyway so all but one
thread gets blocked at that point. So with it, touching a
constant that gets autoloaded cause those threads to block until
there is another one that does the same thing.
[ruby-core:36308] (#921)
variable.c (rb_const_get_0): ditto.
variable.c (autoload_node): ditto.
variable.c (autoload_delete): ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@31732 b2dd03c8-39d4-4d8f-98ff-823fe69b080e