%threads.entities; ]>

The lock_error class defines an exception type thrown to indicate a locking related error has been detected. Examples of errors indicated by a lock_error exception include a lock operation which can be determined to result in a deadlock, or unlock operations attempted by a thread that does not own the lock. std::logical_error Constructs a lock_error object. The thread_resource_error class defines an exception type that is thrown by constructors in the &Boost.Threads; library when thread-related resources can not be acquired. thread_resource_error is used only when thread-related resources cannot be acquired; memory allocation failures are indicated by std::bad_alloc. std::runtime_error Constructs a thread_resource_error object.