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LLTextureFetchWorker::doWork()
The trouble lines are:
U8 * buffer = (U8 *) ALLOCATE_MEM(LLImageBase::getPrivatePool(), total_size);
if (cur_size > 0)
{
memcpy(buffer, mFormattedImage->getData(), cur_size);
}
If 'cur_size > mHttpReplyOffset + append_size' then 'total_size -= src_offset' will cause
total_size to be smaller than cur_size causing a write access violation on the memcpy.
Since the response is invalid it seemed best to make it follow the other failed partial condition.
(transplanted from 737e28ec6b4d74f3ff915a4effc13d7b615a6a9b)
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files exactly match the payload sent to simulator.
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objects is failing, changed to create LLSD blob earlier and just copy that.
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as well.
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texture list.
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The fix in fllowing:
LLTextureFetch has object LLTextureInfo which is has Recorder object.
The recorder object activate (Recorder::handleStart()) self AccumulatorBufferGroup
(Recorder::mBuffers into the current (LLTrace::get_thread_recorder()) ThreadRecorder object
which created (as I understand) one per thread, and time to time send accumulated data to the master ThreadRecorder.
The problem is that LLTextureFetch also can uses from the main thread.
I decide add parameter to CTOR LLTextureInfo(bool postponeStartRecoreder) -
if it false the recorder start immediatly in LLTextureInfo CTOR body, if true we need to start it manually.
Also I add another one LLTextureInfo in LLTextureFetch::mTextureInfoMainThread which is intended
for accumulate data from the main thread.
The postponed Recorder started/stoped from LLTextureFetch::startThread()/endThread().
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NoOpDeletor
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cancel calls.
Refactor any remaining LLCore::HTTPHandlers to use boost::shared_ptr
Started minor refactor in the materials manager into coroutines (unfinished)
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change host == LLHost() to host.isInvalid()
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The problem was that class-static LLUrlEntryParcel::sRegionHost was being
initialized by copying class-static LLHost::invalid. Naturally, these two
statics are initialized in different source files. Since C++ makes no promises
about the relative order in which objects in different object files are
initialized, it seems we hit a case in which we were trying to initialize
sRegionHost by copying a completely uninitialized LLHost::invalid.
In general we might attempt to address such cross-translation-unit issues by
introducing an LLSingleton. But in this particular case, the punch line is
that LLHost::invalid is explicitly constructed identically to a
default-constructed LLHost! In other words, LLHost::invalid provides nothing
we couldn't get from LLHost(). All it gives us is an opportunity for glitches
such as the above.
Remove LLHost::invalid and all references, replacing with LLHost().
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intrusive_ptr<> for refrence counting.
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unused variables, unused const-variables, unused member variables & functions etc. Also removed flags from CMake
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accept headers in mesh and textures. For texture metrics
reporting, use the AP_INVENTORY policy class which is
non-pipelined and pointing (usually) in the right direction.
Use a do-while(false) structure to manage common exit path
code in onCompleted() methods. Identical to a 'goto' but
might amuse the pedantic. Tuning on background fetch to
have it cycle faster. This is experimental. I suspect
with HTTP balancing in llcorehttp, we can do away with the
timers here.
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code to use utils for any LLSD interfaces.
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some problems disabling pipelining on a multi handle with outstanding
requests so build a more conservative system that allows requests
to drain before setting curl multi options. Would rather not have
this but it is significantly safer. "HttpPipelining" debug setting
is now fully dynamic. Connection limits can also be made dynamic
in the near future. Upped the default connection count back to 8 for
now but will revisit this in the tuning phase. It might be time to
combine mesh and textures into a single asset class. For normal
server operations that would be a clear path, but for server under
load, the current scheme may be better. Minor cleanup in logging
to elminate some redundant strings. Might add some more tracing to the
stall logic 'just in case'.
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Intended for users with bad networking gear or twitchy ISPs, if set to
True, forces plain GET requests to asset servers for textures and meshes.
This change kicked off a slight refactor in the mesh repository code which
made it resilient against unexpected 200's and responses not covering
the requested start range. There's still too much data copying in the
Mesh code (always has been). Would love to fix that and get rid of the
monolithic temp buffer. Cleaned up white space damage caused by unnamed
linden who likes to drag his magical editor through code.
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data so their isn't an opportunity for gaps over overruns (init_data).
Start some preliminary tweaking of policy class numbers. It looks
like I can easily drop the default connection count to '4' and
still hit the throttles. Did some experiments running pipeline
deeper which was mostly fine for textures but tended to slow
meshes. Reason uncertain but a depth of '5' seems generally healthy
for mesh. I had one run of 52.6S with a theoretical minimum of 51.2S.
That's as good as I've ever seen.
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