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That is, our replacement `pairs()` forwards the call to built-in `pairs()`
when the passed object has no `__iter()` metamethod. Similarly, our
replacement `ipairs()` forwards to built-in `ipairs()` when the passed object
has no `__index()` metamethod.
This allows for the possibility that the built-in `pairs()` and `ipairs()`
functions engage more efficient implementations than the obvious ones.
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Specifically, make pairs(obj) honor obj's __iter() metamethod if any.
Make ipairs(obj) honor obj's __index() metamethod, if any. Given the semantics
of the __index() metamethod, though, this only works for a proxy table if the
proxy has no array entries (int keys) of its own.
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The point of LLIntTracker is to generate its keys implicitly, so that its int
getKey() can be treated more or less like an instance pointer, with the added
bonus that the key can be passed around via LLSD.
LLIntTracker generates random int keys to try to make it a little harder for
one script to mess with an LLIntTracker instance belonging to another.
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One could argue that LLInstanceTracker is a container of sorts, and erase() is
more conventional. This affects no other code, as destruct() is not currently
referenced.
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Replace the global next(), pairs() and ipairs() functions with a C++ function
that drills down through layers of setdtor() proxy objects and then forwards
the updated arguments to the original global function.
Add a Luau __iter() metamethod to setdtor() proxy objects that, like other
proxy metamethods, drills down to the underlying _target object. __iter()
recognizes the case of a _target table which itself has a __iter() metamethod.
Also add __idiv() metamethod to support integer division.
Add tests for proxy // division, next(proxy), next(proxy, key), pairs(proxy),
ipairs(proxy) and 'for k, v in proxy'. Also test the case where the table
wrapped in the proxy has an __iter() metamethod of its own.
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Trim redundant output from test_setdtor.lua.
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secondlife/viewer#2445
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`setdtor('description', object, function)` returns a proxy userdata object
referencing object and function. When the proxy is garbage-collected, or at
the end of the script, its destructor calls `function(object)`.
The original object may be retrieved as `proxy._target`, e.g. to pass it to
the `table` library. The proxy also has a metatable with metamethods
supporting arithmetic operations, string concatenation, length and table
indexing. For other operations, retrieve `proxy._target`. (But don't assign to
`proxy._target`. It will appear to work, in that subsequent references to
`proxy._target` will retrieve the replacement object -- however, the
destructor will still call `function(original object)`.)
Fix bugs in `lua_setfieldv()`, `lua_rawgetfield()` and `lua_rawsetfield()`.
Add C++ functions `lua_destroyuserdata()` to explicitly destroy a
`lua_emplace<T>()` userdata object, plus `lua_destroybounduserdata()`. The
latter can bind such a userdata object as an upvalue to pass to `LL.atexit()`.
Make `LL.help()` and `LL.leaphelp()` help text include the `LL.` prefix.
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and Beq (#2423)
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# Conflicts:
# indra/newview/llvoicewebrtc.cpp
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Otherwise, an exception raised in the block containing a LuaStackDelta
instance -- that might be caught -- would result in an LL_ERRS() crash. We
can't expect a block exited via exception to keep its contract wrt the Lua
data stack.
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Use a static unordered_map to allow a function receiving (lua_State* L) to
look up the LuaState instance managing that lua_State. We've thought about
this from time to time already. LuaState's constructor creates the map entry;
its destructor removes it; the new static getParent(lua_State* L) method
performs the lookup.
Migrate lluau::set_interrupts_counter() and check_interrupts_counter() into
LuaState member functions. Add a new mInterrupts counter for them.
Importantly, LuaState::check_interrupts_counter(), which is indirectly called
by a lua_callbacks().interrupt function, no longer performs any Lua stack
operations. Empirically, it seems the Lua engine is capable of interrupting
itself at a moment when re-entry confuses it.
Change previous lluau::set_interrupts_counter(L, 0) calls to
LuaState::getParent(L).set_interrupts_counter(0).
Also add LuaStackDelta class, and a lua_checkdelta() helper macro, to verify
that the Lua data stack depth on exit from a block differs from the depth on
entry by exactly the expected amount. Sprinkle lua_checkdelta() macros in
likely places.
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In fact we set mOldValue from mVar, and restore mVar from mOldValue, so the
VAR type makes the most sense. The previous way, you'd get actual errors if
you tried to use TempSet(pointervar, nullptr): that declared mOldValue to be
nullptr_t, which you can't initialize from mVar.
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# Conflicts:
# autobuild.xml
# indra/newview/llvoicewebrtc.cpp
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code in PCH (#2361)
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# Conflicts:
# .github/workflows/build.yaml
# autobuild.xml
# indra/cmake/Copy3rdPartyLibs.cmake
# indra/cmake/FreeType.cmake
# indra/newview/llappviewer.cpp
# indra/newview/skins/default/xui/en/floater_fast_timers.xml
# indra/newview/viewer_manifest.py
# indra/test/test.cpp
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release/2024.06-atlasaurus
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luaL_checkstack() accepts a third parameter which is included in the stack
overflow error message. We've been passing nullptr, leading to messages of the
form "stack overflow ((null))". lluau_checkstack() implicitly passes
__FUNCTION__, so we can distinguish which underlying luaL_checkstack() call
encountered the stack overflow condition.
Also, when calling each atexit() function, pass Luau's debug.traceback()
function as the lua_pcall() error handler. This should help diagnose errors in
atexit() functions.
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* Enable /permissive- on MSVC for better C++ conformance and fix related errors
* Clean up left over warning suppressions from old library or msvc versions
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and logging
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configurable at build time
Also copy tracy profiler client next to windows binary when enabled
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Add Throttle and LogThrottle classes to manage throttled APIs.
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# Conflicts:
# .github/workflows/build.yaml
# indra/llui/llscrolllistctrl.cpp
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release/2024.06-atlasaurus
# Conflicts:
# .github/workflows/build.yaml
# indra/newview/CMakeLists.txt
# indra/newview/llspeakers.cpp
# indra/newview/llvoicechannel.cpp
# indra/newview/llvoicechannel.h
# indra/newview/llvoiceclient.cpp
# indra/newview/llvoiceclient.h
# indra/newview/llvoicewebrtc.cpp
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Add test_flycam.lua to exercise the smaller intervals.
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The viewer's main thread's main fiber is responsible for coordinating just
about everything. With the default round_robin fiber scheduling algorithm,
launching too many additional fibers could starve the main fiber, resulting in
visible lag.
This custom scheduler tracks when it switches to and from the main fiber, and
at each context switch, how long it's been since the last time the main fiber
ran. If that exceeds a certain timeslice, it jumps the main fiber to the head
of the queue and resumes that instead of any other ready fiber.
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