diff options
Diffstat (limited to 'indra/llcommon/llsingleton.h')
| -rw-r--r-- | indra/llcommon/llsingleton.h | 38 |
1 files changed, 16 insertions, 22 deletions
diff --git a/indra/llcommon/llsingleton.h b/indra/llcommon/llsingleton.h index 1b915dfd6e..859e271e26 100644 --- a/indra/llcommon/llsingleton.h +++ b/indra/llcommon/llsingleton.h @@ -27,7 +27,6 @@ #include <boost/noncopyable.hpp> #include <boost/unordered_set.hpp> -#include <boost/intrusive_ptr.hpp> #include <list> #include <vector> #include <typeinfo> @@ -36,8 +35,6 @@ class LLSingletonBase: private boost::noncopyable { public: class MasterList; - class MasterRefcount; - typedef boost::intrusive_ptr<MasterRefcount> ref_ptr_t; private: // All existing LLSingleton instances are tracked in this master list. @@ -119,9 +116,6 @@ protected: const char* p3="", const char* p4=""); static std::string demangle(const char* mangled); - // obtain canonical ref_ptr_t - static ref_ptr_t get_master_refcount(); - // Default methods in case subclass doesn't declare them. virtual void initSingleton() {} virtual void cleanupSingleton() {} @@ -175,10 +169,6 @@ public: static void deleteAll(); }; -// support ref_ptr_t -void intrusive_ptr_add_ref(LLSingletonBase::MasterRefcount*); -void intrusive_ptr_release(LLSingletonBase::MasterRefcount*); - // Most of the time, we want LLSingleton_manage_master() to forward its // methods to real LLSingletonBase methods. template <class T> @@ -298,8 +288,7 @@ private: // stores pointer to singleton instance struct SingletonLifetimeManager { - SingletonLifetimeManager(): - mMasterRefcount(LLSingletonBase::get_master_refcount()) + SingletonLifetimeManager() { construct(); } @@ -317,17 +306,14 @@ private: // of static-object destruction, mean that we DO NOT WANT this // destructor to delete this LLSingleton. This destructor will run // without regard to any other LLSingleton whose cleanup might - // depend on its existence. What we really want is to count the - // runtime's attempts to cleanup LLSingleton static data -- and on - // the very last one, call LLSingletonBase::deleteAll(). That - // method will properly honor cross-LLSingleton dependencies. This - // is why we store an intrusive_ptr to a MasterRefcount: our - // ref_ptr_t member counts SingletonLifetimeManager instances. - // Once the runtime destroys the last of these, THEN we can delete - // every remaining LLSingleton. + // depend on its existence. If you want to clean up LLSingletons, + // call LLSingletonBase::deleteAll() sometime before static-object + // destruction begins. That method will properly honor cross- + // LLSingleton dependencies. Otherwise we simply leak LLSingleton + // instances at shutdown. Since the whole process is terminating + // anyway, that's not necessarily a bad thing; it depends on what + // resources your LLSingleton instances are managing. } - - LLSingletonBase::ref_ptr_t mMasterRefcount; }; protected: @@ -452,6 +438,14 @@ public: return sData.mInitState == INITIALIZED; } + // Has this singleton been deleted? This can be useful during shutdown + // processing to avoid "resurrecting" a singleton we thought we'd already + // cleaned up. + static bool wasDeleted() + { + return sData.mInitState == DELETED; + } + private: struct SingletonData { |