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and llunittype.h for now
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These encapsulate looping over a C++ iterable (be it a sequence container or
an associative container) and returning an LLSD array or map, respectively,
derived from the C++ container. By default, each C++ container item is
directly converted to LLSD.
Also make LLSDParam<LLSD> slightly more efficient by using
std::vector::emplace_back() instead of push_back(), which supports
std::vector<std::unique_ptr>, so we need not use std::shared_ptr.
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convert controlExists to string_view
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make the system ram function align across all supported platforms.
Taken from https://github.com/FirestormViewer/phoenix-firestorm/commit/3b074ba4af5e303125db606dd69eb4282a91f957
+ clean up FS specific comment markers and upstream code retention
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This is redundant (but harmless) on a Posix system, but it fills a missing
puzzle piece on Windows. The point of fsyspath is to be able to interchange
freely between fsyspath and std::string. Existing fsyspath could be
constructed and assigned from std::string, and we could explicitly call its
string() method to get a std::string, but an implicit fsyspath-to-string
conversion that worked on Posix would trip us up on Windows. Fix that.
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This replaces type_tag<T>(), which searched and possibly extended the type_tags
unordered_map at runtime. If we called lua_emplace<T>() from different threads,
that would require locking type_tags.
In contrast, the compiler must instantiate a distinct TypeTag<T> for every
distinct T passed to lua_emplace<T>(), so each gets a distinct value at static
initialization time. No locking is required; no lookup; no allocations.
Add a test to llluamanager_test.cpp to verify that each distinct T passed to
lua_emplace<T>() gets its own TypeTag<T>::value, and that each gets its own
destructor -- but that different lua_emplace<T>() calls with the same T share
the same TypeTag<T>::value and the same destructor.
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It turns out that Luau does not honor PUC-Rio Lua's __gc metafunction, so
despite elaborate measures, the previous lua_emplace<T>() implementation would
not have destroyed the contained C++ T object when the resulting userdata
object was garbage-collected.
Moreover, using LL.atexit() as the mechanism to destroy lua_emplace<T>()
userdata objects (e.g. LuaListener) would have been slightly fragile because
we also want to use LL.atexit() to make the final fiber.run() call, when
appropriate. Introducing an order dependency between fiber.run() and the
LuaListener destructor would not be robust.
Both of those problems are addressed by leveraging one of Luau's extensions
over PUC-Rio Lua. A Luau userdata object can have an int tag; and a tag can
have an associated C++ destructor function. When any userdata object bearing
that tag is garbage-collected, Luau will call that destructor; and Luau's
lua_close() function destroys all userdata objects.
The resulting lua_emplace<T>() and lua_toclass<T>() code is far simpler.
It only remains to generate a distinct int tag value for each different C++
type passed to the lua_emplace<T>() template.
unordered_map<std::type_index, int> addresses that need.
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#1814 and #1517 Fix mirror update rate and occlusion culling
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The help string for each lua_function() must restate the function name and its
arguments. The help string is all that's shown; unless it restates the
function name, LL.help() output lists terse explanations for functions whose
names are not shown.
Make help() prepend "LL." to help output, because these functions must be
accessed via the "builtin" LL table instead of directly populating the global
Lua namespace.
Similarly, before string name lookup, remove "LL." prefix if specified.
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On Mac it doesn't seem to matter, but on Windows, leaving it uninitialized can
produce garbage results and even crash the coroutine. This seems strange,
since we've been assuming lua_getinfo() treats its lua_Debug* as output-only.
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We might decide to leave some of them in place.
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Instead, make fiber.lua call LL.atexit(fiber.run) to schedule that final run()
call at ~LuaState() time using the generic mechanism.
Append an explicit fiber.run() call to a specific test in llluamanager_test.cpp
because the test code wants to interact with multiple Lua fibers *before* we
destroy the LuaState.
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so cleanup happens in reverse order, as is conventional.
Streamline LL.atexit() function: luaL_newmetatable() performs all the
find-or-create named Registry table logic.
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lua_emplace<T>() was passing LL.atexit() a closure binding the new userdata
with a cleanup function. The trouble with that was that a strong reference to
the new userdata would prevent it ever being garbage collected, even if that
was the only remaining reference.
Instead, create a new weak table referencing the userdata, and bind that into
the cleanup function's closure. Then if the only remaining reference to the
userdata is from the weak table, the userdata can be collected.
Make lua_emplace_call_gc<T>() check the bound weak table in case the userdata
has in fact been collected.
Also, in lua_toclass<T>(), use luaL_checkudata() to synopsize comparing the
putative userdata's metatable against the one synthesized by lua_emplace<T>().
This saves several explicit steps.
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source_path() previously reported the path of the module containing the
current (lowest-level) Lua function. The effect was that the Floater.lua
module would always try to look up the XUI file relative to
scripts/lua/require.
It makes more intuitive sense to make source_path() return the path containing
the top-level script, so that a script engaging the Floater.lua module looks
for the XUI file relative to the script.
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Instead of deriving LuaListener from LLInstanceTracker with an int key,
generating a unique int key and storing that key in the Registry, use new
lua_emplace<LuaState>() to store the LuaListener directly in a Lua userdata
object in the Lua Registry.
Because lua_emplace<T>() uses LL.atexit() to guarantee that ~LuaState will
destroy the T object, we no longer need ~LuaState() to make a special call
specifically to destroy the LuaListener, if any. So we no longer need
LuaState::getListener() separate from obtainListener().
Since LuaListener is no longer an LLInstanceTracker subclass, make
LuaState::obtainListener() return LuaListener& rather than LuaListener::ptr_t.
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Publish new LL.atexit() function that accepts a Lua function (or C++ closure)
and saves it (in Registry["atexit"] table) to call later.
Make ~LuaState() walk the Registry["atexit"] table, if it exists, calling each
function appended to that table.
(Consider using that mechanism to clean up a LuaListener, if one was
instantiated. Possibly also use for p.s. leap.run()? But that's run after
every expr() call, instead of only at ~LuaState() time. Pragmatically, though,
the distinction only matters for a LUA Debug Console LUA string with "clean
lua_State" unchecked.)
For use by future lua_function() entry points, lua_emplace<T>(ctor args...)
pushes a Lua userdata object containing a newly-constructed T instance --
actually a std::optional<T> to avoid double destruction. lua_emplace<T>() is
specifically intended to be usable even for T with a nontrivial destructor: it
gives the userdata a metatable with a __gc function that destroys the
contained T instance when the userdata is garbage collected. But since garbage
collection doesn't guarantee to clean up global variables with __gc methods,
lua_emplace<T>() also uses LL.atexit() to ensure that ~T() will run when the
LuaState is destroyed.
The companion to lua_emplace<T>() is lua_toclass<T>(), which returns a
non-nullptr T* if the referenced index is in fact a userdata created by
lua_emplace<T>() for the same T, that has not yet been destroyed. This lets
C++ code access a T previously embedded in Lua userdata.
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# Conflicts:
# .github/workflows/build.yaml
# indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
# indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
# indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
# indra/newview/llfilepicker.cpp
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We have log messages when a coroutine terminates abnormally, but we don't
report either when it starts or when it terminates normally. Address that.
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It's helpful to see when expr() is actually going to start running a
particular Lua chunk. We already report not only when it's done, but also
if/when we start and finish a p.s. fiber.run() call.
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to pick up Featurettes promotion + Brad's GitHub Windows build workaround.
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project/gltf_development
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Disable particular CRT and WinSock API warnings for functions Microsoft considers unsafe/deprecated
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#648: Release/materials featurette
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Fix/re-enable MSVC compiler warnings
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