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Change projects to cmake targetsto get rid of havig to hardcore
include directories and link libraries in consumer projects.
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# Conflicts:
# autobuild.xml
# doc/contributions.txt
# indra/cmake/GLOD.cmake
# indra/llcommon/tests/llprocess_test.cpp
# indra/newview/VIEWER_VERSION.txt
# indra/newview/lldrawpoolavatar.cpp
# indra/newview/llfloatermodelpreview.cpp
# indra/newview/llmodelpreview.cpp
# indra/newview/llviewertexturelist.cpp
# indra/newview/llvovolume.cpp
# indra/newview/viewer_manifest.py
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# Conflicts:
# autobuild.xml
# indra/llcommon/llsys.cpp
# indra/newview/app_settings/key_bindings.xml
# indra/newview/llfloatereditextdaycycle.cpp
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This changeset makes it possible to build the Second Life viewer using
Python 3. It is designed to be used with an equivalent Autobuild branch
so that a developer can compile without needing Python 2 on their
machine.
Breaking change: Python 2 support ending
Rather than supporting two versions of Python, including one that was
discontinued at the beginning of the year, this branch focuses on
pouring future effort into Python 3 only. As a result, scripts do not
need to be backwards compatible. This means that build environments,
be they on personal computers and on build agents, need to have a
compatible interpreter.
Notes
- SLVersionChecker will still use Python 2 on macOS
- Fixed the message template url used by template_verifier.py
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DRTVWR-540: Make Sync test failure more informative
* DRTVWR-540: Make Sync test failure more informative
Approved-by: Andrey Kleshchev
Approved-by: Andrey Lihatskiy
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because it causes frame stalls while logging.
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Bring in Oz's tweaks to the way BugSplat is engaged and tested, plus a few
other miscellaneous goodies.
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results in a version of the DRTVWR-519 that matches what was presemt before it was deployed as a release viewer *plus* 3 small fixes from Maxim (See commits). This branch can now be used for additional fixes before eventually being used to release D-519 as normal
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DRTVWR-519"
This reverts commit e61f485a04dc8c8ac6bcf6a24848359092884d14, reversing
changes made to 00c47d079f7e958e473ed4083a7f7691fa02dcd5.
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llcache but @henri's suggestion that that doesn't reflect the other files in the same place and it should be llfilesystem is a good one so I changed it over
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changes to remove LLVFS and LLVFSThread classes along with the associated source files. The existing llvfs folder is renamed to llcache. Also includes changes to CMake script in many places to reflect changes. Eventually, llvfile source file and class will be renamed but that is not in this change.
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The timeout is meant to prevent a deadlocked test program from hanging a
build. It's not intended to ensure some sort of SLA for the operations under
test. Empirically, using a longer timeout helps some test programs. The only
downside of increasing the timeout is that if some test does hang, it takes
longer to notice. But changes on the order of a few seconds are negligible.
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On Mac, even if you run a test program with --debug or set LOGTEST=DEBUG, it
won't log to stderr if you're filtering build output or running the build in
an emacs compile buffer. This is because, on Mac, a viewer launched by mouse
rather than from the command line is passed a stderr stream that ultimately
gets logged to the system Console. The shouldLogToStderr() function is
intended to avoid spamming the Console with the (voluminous) viewer log
output. It tests whether stderr isatty() and, if not, suppresses calling
LLError::logToStderr().
This makes debugging test programs using log output trickier than necessary.
Change shouldLogToStderr() to permit logging when either stderr isatty() or is
a pipe. The original intention is preserved in that empirically, a viewer
launched by mouse is passed a stderr stream identified as a character device
rather than as a pipe.
Also introduce SetEnv, a class that facilitates setting (e.g.) LOGTEST=DEBUG
for specific test programs without setting it for all test programs in the
build. Using the constructor for a static object means you can set environment
variables before main() is entered, which is important because it's the main()
function in test.cpp that acts on the LOGTEST and LOGFAIL environment
variables.
These changes make it unnecessary to retain the temporary change in test.cpp
to force LOGTEST to DEBUG.
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Using Sync with multiple threads is trickier than with coroutines. In
particular, Sync::bump() was racy (get() and set() as two different
operations), and threads were proceeding when they should have waited.
Fortunately LLCond, on which Sync is based, already supports atomic update
operations. Use that for bump().
But to nail things down even more specifically, add set(n) to complement
yield_until(n). Using those methods, there should be no ambiguity about which
call in one thread synchronizes with which call in the other thread.
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Sometimes it's useful to be able to temporarily override an existing LOGFAIL
setting in the current environment. It's far more convenient to prepend
LOGFAIL='' to a command than to 'unset LOGFAIL' as a whole separate command --
and then remember to restore its previous value.
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Introduce LLCoros::Stop exception, with subclasses Stopping, Stopped and
Shutdown. Add LLCoros::checkStop(), intended to be called periodically by any
coroutine with nontrivial lifespan. It checks the LLApp status and, unless
isRunning(), throws one of these new exceptions.
Make LLCoros::toplevel() catch Stop specially and log forcible coroutine
termination.
Now that LLApp status matters even in a test program, introduce a trivial
LLTestApp subclass whose sole function is to make isRunning() true.
(LLApp::setStatus() is protected: only a subclass can call it.) Add LLTestApp
instances to lleventcoro_test.cpp and lllogin_test.cpp.
Make LLCoros::toplevel() accept parameters by value rather than by const
reference so we can continue using them even after context switches.
Make private LLCoros::get_CoroData() static. Given that we've observed some
coroutines living past LLCoros destruction, making the caller call
LLCoros::instance() is more dangerous than encapsulating it within a static
method -- since the encapsulated call can check LLCoros::wasDeleted() first
and do something reasonable instead. This also eliminates the need for both a
const and non-const overload.
Defend LLCoros::delete_CoroData() (cleanup function for fiber_specific_ptr for
CoroData, implicitly called after coroutine termination) against calls after
~LLCoros().
Add a status string to coroutine-local data, with LLCoro::setStatus(),
getStatus() and RAII class TempStatus.
Add an optional 'when' string argument to LLCoros::printActiveCoroutines().
Make ~LLCoros() print the coroutines still active at destruction.
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No one uses LLEventQueue to defer posted events until the next mainloop tick
-- and with LLCoros moving to Boost.Fiber, cross-coroutine event posting works
that way anyway, making LLEventQueue pretty unnecessary.
The static RegisterFlush instance in llevents.cpp was used to call
LLEventPumps::flush() once per mainloop tick, which in turn called flush() on
every registered LLEventPump. But the only reason for that mechanism was to
support LLEventQueue. In fact, when LLEventMailDrop overrode its flush()
method for something quite different, it was startling to find that the new
flush() override was being called once per frame -- which caused at least one
fairly mysterious bug. Remove RegisterFlush. Both LLEventPumps::flush() and
LLEventPump::flush() remain for now, though intended usage is unclear.
Eliminating LLEventQueue means we must at least repurpose
LLEventPumps::mQueueNames, a map intended to make LLEventPumps::obtain()
instantiate an LLEventQueue rather than the default LLEventPump. Replace it
with mFactories, a map from desired instance name to a callable returning
LLEventPump*. New map initialization syntax plus lambda support allows us to
populate that map at compile time with little lambdas returning the correct
subclass instance.
Similarly, LLLeapListener::newpump() used to check the ["type"] entry in the
LLSD request specifically for "LLEventQueue". Introduce another such map in
llleaplistener.cpp for potential future extensibility.
Eliminate the LLEventQueue-specific test.
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LLEventDetail::visit_and_connect() promised special treatment for the
specific case when an LLEventPump::listen() listener was composed of (possibly
nested) boost::bind() objects storing boost::weak_ptr values -- specifically
boost::bind() rather than std::bind or lambdas, specifically boost::weak_ptr
rather than std::weak_ptr.
Outside of self-tests, it does not appear that anyone actually uses that
support.
There is good reason not to: it's a silent side effect of a complicated
compile-time inspection that could be silently derailed by use of std::bind()
or a lambda or a std::weak_ptr. Can you be sure you've engaged that promise?
How?
A more robust guarantee can be achieved by storing an LLTempBoundConnection in
the transient object itself. When the object is destroyed, the listener is
disconnected. Normal C++ rules around object destruction guarantee it. This
idiom is widely used.
There are a couple good reasons to remove the visit_and_connect() machinery:
* boost::bind() and boost::weak_ptr do not constitute the wave of the future.
Preferring those constructs to lambdas and std::weak_ptr penalizes new code,
whether by silently failing or by discouraging use of modern idioms.
* The visit_and_connect() machinery was always complicated, and apparently
never very robust. Most of its promised features have been commented out
over the years. Making the code base simpler, clearer and more maintainable
is always a useful effect.
LLEventDetail::visit_and_connect() was also used by the four
LLNotificationChannelBase::connectMumble() methods. Streamline those as well.
Of course, remove related test code.
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The only usage of any of this was in test code.
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The comments within indra/test/test.cpp promise that --debug is, in fact, like
LOGTEST=DEBUG. Until now, that was a lie. LOGTEST=level displayed log output
on stderr as well as in testprogram.log, while --debug did not.
Add LLError::logToStderr() function, and make initForApplication() (i.e.
commonInit()) call that instead of instantiating RecordToStderr inline. Also
call it when test.cpp recognizes --debug switch.
Remove the mFileRecorder, mFixedBufferRecorder and mFileRecorderFileName
members from SettingsConfig. That tactic doesn't scale.
Instead, add findRecorder<RECORDER>() and removeRecorder<RECORDER>() template
functions to locate (or remove) a RecorderPtr to an object of the specified
subclass. Both are based on an underlying findRecorderPos<RECORDER>() template
function. Since we never expect to manage more than a handful of RecorderPtrs,
and since access to the deleted members is very much application setup rather
than any kind of ongoing access, a search loop suffices.
logToFile() uses removeRecorder<RecordToFile>() rather than removing
mFileRecorder (the only use of mFileRecorder).
logToFixedBuffer() uses removeRecorder<RecordToFixedBuffer>() rather than
removing mFixedBufferRecorder (the only use of mFixedBufferRecorder).
Make RecordToFile store the filename with which it was instantiated. Add a
getFilename() method to retrieve it. logFileName() is now based on
findRecorder<RecordToFile>() instead of mFileRecorderFileName (the only use of
mFileRecorderFileName).
Make RecordToStderr::mUseANSI a simple bool rather than a three-state enum,
and set it immediately on construction. Apparently the reason it was set
lazily was because it consults its own checkANSI() method, and of course
'this' doesn't acquire the leaf class type until the constructor has completed
successfully. But since nothing in checkANSI() depends on anything else in
RecordToStderr, making it static solves that problem.
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Sync is specifically intended for test programs. It is based on an
LLScalarCond<int>. The idea is that each of two coroutines can watch for the
other to get a chance to run, indicated by incrementing the wrapped int and
notifying the wrapped condition_variable. This is less hand-wavy than calling
llcoro::suspend() and hoping that the other routine will have had a chance to
run.
Use Sync in lleventcoro_test.cpp.
Also refactor lleventcoro_test.cpp so that instead of a collection of static
data requiring a clear() call at start of each individual test function, the
relevant data is all part of the test_data struct common to all test
functions. Make the helper coroutine functions members of test_data too.
Introduce llcoro::logname(), a convenience function to log the name of the
currently executing coroutine or "main" if in the thread's main coroutine.
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which is, of course, different in Visual Studio (__FUNCSIG__).
Use LL_PRETTY_FUNCTION in DEBUG output instead of plain __FUNCTION__.
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Longtime fans will remember that the "dcoroutine" library is a Google Summer
of Code project by Giovanni P. Deretta. He originally called it
"Boost.Coroutine," and we originally added it to our 3p-boost autobuild
package as such. But when the official Boost.Coroutine library came along
(with a very different API), and we still needed the API of the GSoC project,
we renamed the unofficial one "dcoroutine" to allow coexistence.
The "dcoroutine" library had an internal low-level API more or less analogous
to Boost.Context. We later introduced an implementation of that internal API
based on Boost.Context, a step towards eliminating the GSoC code in favor of
official, supported Boost code.
However, recent versions of Boost.Context no longer support the API on which
we built the shim for "dcoroutine." We started down the path of reimplementing
that shim using the current Boost.Context API -- then realized that it's time
to bite the bullet and replace the "dcoroutine" API with the Boost.Fiber API,
which we've been itching to do for literally years now.
Naturally, most of the heavy lifting is in llcoros.{h,cpp} and
lleventcoro.{h,cpp} -- which is good: the LLCoros layer abstracts away most of
the differences between "dcoroutine" and Boost.Fiber.
The one feature Boost.Fiber does not provide is the ability to forcibly
terminate some other fiber. Accordingly, disable LLCoros::kill() and
LLCoprocedureManager::shutdown(). The only known shutdown() call was in
LLCoprocedurePool's destructor.
We also took the opportunity to remove postAndSuspend2() and its associated
machinery: FutureListener2, LLErrorEvent, errorException(), errorLog(),
LLCoroEventPumps. All that dual-LLEventPump stuff was introduced at a time
when the Responder pattern was king, and we assumed we'd want to listen on one
LLEventPump with the success handler and on another with the error handler. We
have never actually used that in practice. Remove associated tests, of course.
There is one other semantic difference that necessitates patching a number of
tests: with "dcoroutine," fulfilling a future IMMEDIATELY resumes the waiting
coroutine. With Boost.Fiber, fulfilling a future merely marks the fiber as
ready to resume next time the scheduler gets around to it. To observe the test
side effects, we've inserted a number of llcoro::suspend() calls -- also in
the main loop.
For a long time we retained a single unit test exercising the raw "dcoroutine"
API. Remove that.
Eliminate llcoro_get_id.{h,cpp}, which provided llcoro::get_id(), which was a
hack to emulate fiber-local variables. Since Boost.Fiber has an actual API for
that, remove the hack.
In fact, use (new alias) LLCoros::local_ptr for LLSingleton's dependency
tracking in place of llcoro::get_id().
In CMake land, replace BOOST_COROUTINE_LIBRARY with BOOST_FIBER_LIBRARY. We
don't actually use the Boost.Coroutine for anything (though there exist
plausible use cases).
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Use them in place of awkward try/catch test boilerplate.
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get and documenting it
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stack frame
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