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The observed crash was due to sharing a stateful global resource (the global
LLMessageSystem instance) between different tasks. Specifically, a coroutine
sets its mMessageReader one way, expecting that value to persist until it's
done with message parsing, but another coroutine sneaks in at a suspension
point and sets it differently.
Introduce LockMessageReader and LockMessageChecker classes, which must be
instantiated by a consumer of the resource. The constructor of each locks a
coroutine-aware mutex, so that for the lifetime of the lock object no other
coroutine can instantiate another.
Refactor the code so that LLMessageSystem::mMessageReader can only be modified
by LockMessageReader, not by direct assignment. mMessageReader is now an
instance of LLMessageReaderPointer, which supports dereferencing and
comparison but not assignment. Only LockMessageReader can change its value.
LockMessageReader addresses the use case in which the specific mMessageReader
value need only persist for the duration of a single method call. Add an
instance in LLMessageHandlerBridge::post().
LockMessageChecker is a subclass of LockMessageReader: both lock the same
mutex. LockMessageChecker addresses the use case in which the specific
mMessageReader value must persist across multiple method calls. Modify the
methods in question to require a LockMessageChecker instance. Provide
LockMessageChecker forwarding methods to facilitate calling the underlying
LLMessageSystem methods via the LockMessageChecker instance.
Add LockMessageChecker instances to LLAppViewer::idleNetwork(), a couple cases
in idle_startup() and LLMessageSystem::establishBidirectionalTrust().
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Specifically:
LLCoros::Mutex means boost::fibers::mutex
LLCoros::LockType means std::unique_lock<boost::fibers::mutex>
LLCoros::ConditionVariable means boost::fibers::condition_variable
LLCoros::cv_status means boost::fibers::cv_status
So as not to drag in all of boost::fibers::mutex.hpp or condition_variable.hpp
for each consumer of llcoros.h, instead #define LLCOROS_MUTEX_HEADER and
LLCOROS_CONDVAR_HEADER. Those who need them can #include the relevant macro.
Update llcond.h and llthreadsafequeue.h accordingly.
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for compatibility with Python llbase.llsd.parse().
The Python parse() currently requires uppercase hex digits for b16"hex"
coding; lowercase hex digits cause it to raise LLSDParseError.
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First, the signature classname(const T*) was wrong: that function could only
accept a pointer to const T. The expression classname(someptr) where someptr
was a pointer to non-const SomeType displayed "SomeType*" because it could
only match classname(const T&), where T was SomeType*.
classname(T* const) is what we should have written, meaning "const pointer to
T" rather than "pointer to const T."
Second, the previous implementation failed to handle the case in which the
pointer was nullptr.
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LLSDNotationFormatter (also LLSDNotationStreamer that uses it, plus
operator<<(std::ostream&, const LLSD&) that uses LLSDNotationStreamer) is most
useful for displaying LLSD to a human, e.g. for logging. Having the default
dump raw binary bytes into the log file is not only suboptimal, it can
truncate the output if one of those bytes is '\0'. (This is a problem with the
logging subsystem, but that's a story for another day.)
Use OPTIONS_PRETTY_BINARY wherever there is a default LLSDFormatter
::EFormatterOptions argument.
Also, allow setting LLSDFormatter subclass boolalpha(), realFormat() and
format(options) using optional constructor arguments. Naturally, each subclass
that supports this must accept and forward these constructor arguments to its
LLSDFormatter base class constructor.
Fix a couple bugs in LLSDNotationFormatter::format_impl() for an LLSD::Binary
value with OPTIONS_PRETTY_BINARY:
- The code unconditionally emitted a b(len) type prefix followed by either raw
binary or hex, depending on the option flag. OPTIONS_PRETTY_BINARY caused it
to emit "0x" before the hex representation of the data. This is wrong in
that it can't be read back by either the C++ or the Python LLSD parser.
Correct OPTIONS_PRETTY_BINARY formatting consists of b16"hex digits" rather
than b(len)"raw bytes".
- Although the code did set hex mode, it didn't set either the field width or
the fill character, so that a byte value less than 16 would emit a single
digit rather than two.
Instead of having one LLSDFormatter::format() method with an optional options
argument, declare two overloads. The format() overload without options passes
the mOptions data member to the overload accepting options.
Refactor the LLSDFormatter family, hoisting the recursive format_impl() method
(accepting level) to a pure virtual method at LLSDFormatter base-class level.
Most subclasses therefore need not override either base-class format() method,
only format_impl(). In fact the short format() overload isn't even virtual.
Consistently use LLSDFormatter::EFormatterOptions enum as the options
parameter wherever such options are accepted.
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Having it on just one source file was frustrating because the project build
failed before it reached the one source file with the switch.
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First, get rid of ancient cruft in the find_path() calls: on a 64-bit system,
"$ENV{PROGRAMFILES}" expands to the 64-bit 'Program Files' directory rather
than the 32-bit 'Program Files (x86)' directory, and none of the ancient cruft
would be found there anyway.
Empirically, find_path(dxdiag.h) is able to find the file using environment
variables (INCLUDE from VS variables?), so it doesn't need the specific
pathnames coded into that call.
Once we find DIRECTX_INCLUDE_DIR, don't immediately insert it into
include_directories: we've had troubles with incompatible Windows SDK versions
(compile errors in Microsoft header files!) when DIRECTX_INCLUDE_DIR preceded
the Windows SDK directory in the include path.
The DIRECTX_FIND_QUIETLY logic seemed backwards: the message(STATUS) output was
emitted only when DIRECTX_FIND_QUIETLY was false. Reverse that.
The ancient cruft in find_path(dxguid.lib) was causing it to find the wrong
(very old) DirectX library. Remove ancient cruft. But empirically, without
that, even once we've found DIRECTX_INCLUDE_DIR, CMake could not implicitly
find dxguid.lib. If the DirectX directory hierarchy were structured as
.../version/Include and .../version/Lib, a relative pathname would have been
sufficient hint. Unfortunately it's structured as .../Include/version and
.../Lib/version, so a relative pathname would have to include the specific
version. Instead, replace "/Include/" with "/Lib/". But even then, we have to
drill down to the architecture-specific subdirectory based on ADDRESS_SIZE.
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for new llsd_clone(), llsd_shallow() functions.
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following promotion of DRTVWR-500
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# Conflicts:
# indra/newview/pipeline.cpp
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following promotion of DRTVWR-440
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water Fresnel
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Apparently, in previous Boost versions, boost::noncopyable was sneaking into
the namespace via other headers. Now the compiler complains about its absence
without an explicit #include.
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to compile/link
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compile/link
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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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This allows one of the tests to specifically waitFor() the completion status
update from LLLogin, rather than the next status update to come along: the
coroutine potentially emits a whole sequence of status updates before
completion.
Then the waitFor() overload that merely waits for the next status update is
implemented by passing that specific predicate to the other overload.
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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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Fix light falloff being corrupted when editing value via build floater spinner
Approved-by: Dave Houlton
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Fix editing light color corrupting intensity and color values
Approved-by: Dave Houlton
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SL-12902 Better fix for light color values in color swatch not matching light color values inworld.
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light color values inworld.
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