diff options
Diffstat (limited to 'indra')
| -rw-r--r-- | indra/llcommon/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | indra/llcommon/llinttracker.h | 43 |
2 files changed, 44 insertions, 0 deletions
diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt index 8472eac9f6..8577d94be1 100644 --- a/indra/llcommon/CMakeLists.txt +++ b/indra/llcommon/CMakeLists.txt @@ -189,6 +189,7 @@ set(llcommon_HEADER_FILES llinitparam.h llinstancetracker.h llinstancetrackersubclass.h + llinttracker.h llkeybind.h llkeythrottle.h llleap.h diff --git a/indra/llcommon/llinttracker.h b/indra/llcommon/llinttracker.h new file mode 100644 index 0000000000..86c30bc7aa --- /dev/null +++ b/indra/llcommon/llinttracker.h @@ -0,0 +1,43 @@ +/** + * @file llinttracker.h + * @author Nat Goodspeed + * @date 2024-08-30 + * @brief LLIntTracker isa LLInstanceTracker with generated int keys. + * + * $LicenseInfo:firstyear=2024&license=viewerlgpl$ + * Copyright (c) 2024, Linden Research, Inc. + * $/LicenseInfo$ + */ + +#if ! defined(LL_LLINTTRACKER_H) +#define LL_LLINTTRACKER_H + +#include "llinstancetracker.h" + +template <typename T> +class LLIntTracker: public LLInstanceTracker<T, int> +{ + using super = LLInstanceTracker<T, int>; +public: + LLIntTracker(): + super(getUniqueKey()) + {} + +private: + static int getUniqueKey() + { + // Find a random key that does NOT already correspond to an instance. + // Passing a duplicate key to LLInstanceTracker would do Bad Things. + int key; + do + { + key = std::rand(); + } while (super::getInstance(key)); + // This could be racy, if we were instantiating new LLIntTracker<T>s + // on multiple threads. If we need that, have to lock between checking + // getInstance() and constructing the new super. + return key; + } +}; + +#endif /* ! defined(LL_LLINTTRACKER_H) */ |