CHANGES: CHANGE 2: BGe 27-Nov-24 * Internal changes - Lanes is implemented in C++20: thread, condition_variable, mutex, string_view, variant, lambdas, templates, and more! - Almost all platform-specific code is gone (only a small bit for thread priority and affinity remains). - Decoda support inactive by default. - Deep userdata interface fully revamped to C++20 too. * Lanes API changes - Version is now 4.0.0 - Lanes module: - shared library is now lanes_core.[so|dll] instead of lanes/core.[so|dll] - lanes.register() is also available as lanes_register() in the exported C API. - lanes.sleep() accepts a new argument "indefinitely" to block forever (until hard cancellation is received). - function set_debug_threadname() available inside a Lane is renamed lane_threadname(); can now both read and write the name. - new function lanes.finally(). Installs a function that gets called at Lanes shutdown after attempting to terminate all lanes. - new function lanes.collectgarbage(), to force a full GC cycle in the keeper states. If some lanes still run after the finalizer, Lanes with throw an exception or freeze, depending on its return value. - Configuration settings: - Boolean parameters only accept boolean values. - allocator provider function is called with a string hint to distinguish internal allocations, lane and keeper states. - demote_full_userdata removed. Use __lanesconvert instead (see below). - keepers_gc_threshold added. Controls when GC runs inside keepers. - nb_keepers changed to nb_user_keepers. limited to 100 keepers on top of the internal keeper used by the timer Linda. - strip_functions added. Only useful for Lua 5.3+. - verbose_errors removed. Use lane error_trace_level instead. - with_timers is false by default. - Non-deep full userdata are processed during module registration just like ordinary module C functions, making them valid transferable (up)values (for example: io.stdin). - Lanes: - Can no longer be "killed" by hard-stopping their thread without any resource cleanup (see lane:cancel()). - lanes.gen() settings: - stricter check of base libraries (can raise an error if it doesn't exist in the Lua flavor it's built against). - error_trace_level added. Replaces the global verbose_errors setting. - name added. Can be used to set the name early (before the lane body calls lane_threadname()). - New generator lanes.coro() to start a lane as a coroutine. - New __close metamethod that calls join(). - lane:join() - Returns nil, error in case of problem. - Forces lane function body must return a non-nil first value on success because of the above. - lane:get_debug_threadname() renamed get_threadname(). - Lindas: - lanes.linda() - Arguments can be provided in any order. - Accepts a callback to be invoked by __close (see below). - Providing "auto" as name when constructing a Linda cause Lanes to provide a name built from the source location of the construction. - Specifying a group to lanes.linda() is mandatory when Lanes is configured with user Keepers. - linda:deep() result no longer contains the raw C pointer of the Linda object. - linda :receive(), :send(), :get(), :set(), :limit() return nil, error in case of problem. Returned values in case of success change too. - linda:limit() can be used to read the value if no new limit is provided. - linda:restrict() can restrain the use of send/receive or set/get on any key. - New __close metamethod that calls any suitable handler that was provided at Linda creation. - linda:dump() outputs .limit as 'unlimited' instead of -1 for unlimited keys. - linda:wake() can wake up threads waiting for a Linda without doing any I/O on it. - linda.status reads the cancel status of the Linda. - new function linda:collectgarbage() to force collection of all stale data in the associated keeper. - Deep userdata are an acceptable key to send data into (for example, another linda). - Full userdata conversion: - __lanesconvert added. - __lanesignore removed. Use __lanesconvert instead. CHANGE 1: BGe 9-Apr-24 * reset changelog, next entry will list API changes since last C-implementation. (end)