* Removed the 'RequestQueue' from other PerServiceRequestQueue occurances
in the code.
* Made wantsMoreHTTPRequestsFor and checkBandwidthUsage threadsafe (by
grouping the static variables of AIPerService into thread ThreadSafe
groups.
Most notably getMesh (the only one possibly using any significant
bandwidth), but in general every type of requests that just have to
happen anyway and in the order they are requested: they are just passed
to the curl thread, but now the curl thread will queue them and hold
back if the (general) service they use is loaded too heavily.
Don't pass arguments to wantsMoreHTTPRequestsFor, but use globals in
llmessage: AIPerService::sHTTPThrottleBandwidth125 and
AIPerService::sNoHTTPBandwidthThrottling instead.
This is needed later on.
Move the destructor (and copy constructor while I was at it) to the .cpp
file in order to avoid instantiating the destructor of
boost::intrusive_ptr<ThreadSafeBufferedCurlEasyRequest> from a header,
which would require the class ThreadSafeBufferedCurlEasyRequest
to be defined in that header, which is unnecessary. In other words,
this avoid the need to include "aicurl.h" in headers using
AIPerService[Ptr].
Also fixed indentation of a comment.
Adds throttling based on on average bandwidth usage per HTTP service.
Since only HTTP textures are using this, they are still starved by other
services like inventory and mesh dowloads. Also, it will be needed to
move the maximum number of connections per service the to the PerService
class, and dynamically tune them: reducing the number of connections is
the first thing to do when using too much bandwidth.
I also added a graph for HTTP texture bandwidth to the stats floater.
For some reason the average bandwidth (over 1 second) look almost like
scattered noise... weird for something that is averaged...
