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assertions around ref counting and (hack) fix crash on shutdown from dangling texture reference (reduced to 1 dangling texture from several hundred, can't find the remaining reference).
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Turns out that one of our WorkQueue integration tests was relying on the
incorrect runFor() behavior that we just fixed, so the test broke. Now that
runFor() doesn't wait around for work to be posted, use an explicit wait loop
instead.
To support this, add LLCond::get(functor), where functor must accept a const
reference to the stored data. This new get() returns whatever the functor
returns, allowing a caller to peek at the stored data.
Also use universal references for all remaining LLCond functor arguments.
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Reverting a merge is sticky: it tells git you never want to see that branch
again. Merging the DRTVWR-546 branch, which contained the revert, into the
glthread branch undid much of the development work on that branch. To restore
it we must revert the revert.
This reverts commit 029b41c0419e975bbb28454538b46dc69ce5d2ba.
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runFor(interval) and runUntil(timestamp) are intended, and documented, to run
*no longer than* the specified time. Instead, the initial implementation
always waited the full specified time, hoping for work to arrive. Fix that:
once we clear work that's already pending, return right away.
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It's sometimes important to finish other initialization before launching the
threads in the ThreadPool, so make that an explicit step. In particular, we
were launching the LLImageGL texture thread before initializing the GL
context, resulting in all gray textures.
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and correspondingly, ll_convert<std::wstring>(const wchar_t*).
Now that we're using ll_convert() for single-argument stringize(arg), make
sure it can efficiently handle the simple case of constructing a string from a
const char pointer.
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It's useful to be able to say STRINGIZE(item0 << item1 << item2), and we use
that a lot in our code base. But weird syntax aside, there are a couple
advantages to being able to write stringize(item0, item1, item2).
First, it allows stringize() to be used from within some other variadic
function, without having to make that function a macro that accepts an
arbitrary insertion-operator expression. There's no such thing as a member
macro.
Second, particularly for variadic functions, it allows us to optimize the
single-argument case stringize(item0). A macro can't do that. When item0 is
already a string of the desired char type, instead of streaming it into a
std::ostringstream and retrieving it again, we can simply return the input
string. When it's a pointer to the desired char type, we can directly
construct the result string without the help of std::ostringstream. When it's
a string of some other char type, we can engage ll_convert() to perform needed
conversions.
We generalize and optimize the generic gstringize() function, retaining the
role of stringize() and wstringize() as thin wrappers that merely provide the
desired char type.
Optimizing the single-argument case requires separately defining gstringize()
with two or more arguments: the general case. Then gstringize(arg) is
delegated to a gstringize_impl class template so we can partially specialize
to recognize a std::basic_string<desired_char_type> argument, as well as
desired_char_type*. Both these specializations engage ll_convert(), which
already handles the trivial case when no conversion is required.
Use of ll_convert() in this role supercedes and generalizes the previous
wstring_to_utf8str() and utf8str_to_wstring() overloads.
Also introduce stream_to(std::ostream&, ...) to support variadic streaming to
other destinations, e.g. a file, std::cout, ...
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wglCreateContextAttribs call
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(cherry picked from commit 18de6c9b989cc7060f2a314f5b68cc102677823b)
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instead of requiring a separate declaration for each subclass.
The previous way produces errors in clang.
(cherry picked from commit 8458ad8890cf0a11804996210d7bcfbdaa3eec2e)
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in stats window
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# Conflicts:
# README.md
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This reverts commit 5188a26a8521251dda07ac0140bb129f28417e49, reversing
changes made to 819088563e13f1d75e048311fbaf0df4a79b7e19.
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We want to skip calling PostMessage() to bump the window thread out of
GetMessage() in any frame with no work functions pending for that thread. That
test depends on being able to sense the size() of the queue. Having converted
to WorkQueue, we need that queue to support size().
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in stats window
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That is, when LLViewerFetchedTexture::scheduleCreateTexture() wants to call
createTexture() on the LLImageGLThread, but postCreateTexture() on the main
thread, use the "mainloop" WorkQueue to set up the handshake.
Give ThreadPool a public virtual run() method so a subclass can override with
desired behavior. This necessitates a virtual destructor. Add accessors for
embedded WorkQueue (for post calls), ThreadPool name and width (in threads).
Allow LLSimpleton::createInstance() to forward arguments to the subject
constructor.
Make LLImageGLThread an LLSimpleton - that abstraction didn't yet exist at the
time LLImageGLThread was coded. Also derive from ThreadPool rather than
LLThread. Make it a single-thread "pool" with a very large queue capacity.
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Give ThreadPool and WorkQueue the ability to override default
ThreadSafeSchedule capacity.
Instantiate "mainloop" WorkQueue and "General" ThreadPool with very large
capacity because we never want to have to block trying to push to either.
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postIfOpen() provides a no-exception alternative to post(), which blocks if
full but throws if closed. postIfOpen() likewise blocks if full, but returns
true if able to post and false if the queue was closed.
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instead of requiring a separate declaration for each subclass.
The previous way produces errors in clang.
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That function wants to pass a code_page to ll_convert_string_to_wide(), but
the code_page parameter was being mistaken for the length parameter, leading
to access violations.
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clang allows us to specify, as a default function parameter, an expression
involving a preceding parameter, e.g. (char* ptr, size_t len=strlen(ptr)). The
Microsoft compiler produces errors, requiring more overloads to address that.
Also #undef llstring.h's declaration helper macros at the bottom of the file.
Once we've used them to declare stuff, they need not (should not) be visible
to the consuming source file.
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Use new ll_convert_forms() macro in llstring.h to declare, for each
wide-string conversion function of interest, four overloads. The real one, the
nontrivial one, is (const char*, size_t len), implemented in llstring.cpp. Then
(const string&, size_t len), (const char*) and (const string&) are each
trivially implemented with an inline call to (const char*, size_t len).
Notably, we change all S32 len parameters to size_t. Using S32 is old skool.
Tweak each nontrivial implementation in llstring.cpp to accept (const char*,
size_t len) instead of (const string&) with or without explicit length.
Eliminate from llstring.cpp trivial overloads (deriving length from either a
const char* or from a string), since those are now inline in the header.
Of course three of those overloads will be unified once we enable C++17 and
change each relevant parameter to std::string_view, but we're not yet there.
Meanwhile, this suite of overloads minimizes, to the best of our ability, new
string allocations solely for parameter passing. And use of a macro means we
need only change the macro once we get std::string_view.
We take this step because some use cases require (const char*), some require
(const string&, size_t len), others (const char*, size_t len) ... We were
missing some key overloads, and had to work around them by instantiating new
string objects (necessitating both allocation and character copying) just to
pass the desired parameter. Using the macro ensures this consistent set of
overloads for every wide-string conversion function.
Additionally, knowing that the ugly-name overloads exist, ll_convert_forms()
implicitly defines corresponding ll_convert<TARGET>() overloads.
Streamline declarations of utf16str_to_wstring(), wstring_to_utf16str(),
utf8str_to_utf16str(), utf16str_to_utf8str(), utf8str_to_wstring(),
wstring_to_utf8str(), ll_convert_wide_to_wstring() and
ll_convert_wstring_to_wide() using ll_convert_forms().
Use corresponding new ll_convert_cp_forms() macro to declare consistent
overloads for conversion functions accepting an optional unsigned int
code_page parameter. We used to delegate to the .cpp file the implementation
of each overload accepting code_page so llstring.h need not include the
Windows header defining the CP_UTF8 default; this is more simply accomplished
by introducing a small ll_wstring_default_code_page() function to retrieve it
from the .cpp file. That lets us specify the code_page parameter as optional,
using that function as its default value.
Use ll_convert_cp_forms() to streamline declarations of
ll_convert_wide_to_string() and ll_convert_string_to_wide().
Introduce real implementations of ll_convert_wide_to_wstring() and
ll_convert_wstring_to_wide(). The previous implementations merely copied
individual characters, which is wrong: when we convert UTF16LE to UTF32, we
can and should fold multi-character UTF16LE encodings to the corresponding
single UTF32 character. The real implemenations leverage our awareness that
both llutf16string and Windows std::wstring (either variant) use UTF16LE
encoding, so we can reuse the corresponding llutf16string conversions.
Introduce generic ll_convert_length() function, specialized as either
std::strlen() or std::wcslen() depending on parameter type. (Even if
std::wcslen() is derived from classic C, why doesn't the C++ standard library
define a std::strlen(const wchar_t*) overload to call it?)
Fix ll_convert_alias()'s ll_convert_impl specialization's operator() to accept
boost::call_traits::param_type, so we can pass (e.g.) const std::wstring& but
also const wchar_t* instead of const wchar_t*&.
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LLMemTracked, introduce alignas, hook most/all reamining allocs, disable synchronous occlusion, and convert frequently accessed LLSingletons to LLSimpleton
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In llpreprocessor.h, consider the case of clang on Windows: #define
LL_WCHAR_T_NATIVE there as well as for the Microsoft compiler with /Zc:wchar_t
switch.
In stdtypes.h, inject a LLWCHAR_IS_WCHAR_T symbol to allow the preprocessor to
make decisions about when the types are identical.
llstring.h's conversion logic deals with three types of wide strings
(LLWString, std::wstring and utf16string) based on three types of wide char
(llwchar, wchar_t and U16, respectively). Sometimes they're three distinct
types, sometimes wchar_t is identical to llwchar and sometimes wchar_t is
identical to U16. Rationalize the three cases using ll_convert_u16_alias() and
new ll_convert_wstr_alias() macros.
stringize.h was directly calling wstring_to_utf8str() and utf8str_to_wstring(),
which was producing errors with VS 2019 clang since there isn't actually a
wstring_to_utf8str(std::wstring) overload. Use ll_convert<std::string>()
instead, since that redirects to the relevant ll_convert_wide_to_string()
function. (And now you see why we've been trying to migrate to the uniform
ll_convert<target>() wrapper!) Similarly, call ll_convert<std::wstring>()
instead of a two-step conversion from utf8str_to_wstring(), producing LLWString,
then a character-by-character copy from LLWString to std::wstring. That
isn't even correct: on Windows, we should be encoding from UTF32 to UTF16.
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postTo() sets up two-way communication: the caller asks to run work on some
other WorkQueue, expecting an eventual callback on the originating WorkQueue.
That permits us to transport any exception thrown by the work callable back to
rethrow on the originating WorkQueue.
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