This patch overhauls the FAIL* server code to leverage Boost asio to be able to
handle a large number of clients (>4000). In this implementation the server is
now single threaded. I've not encountered any problems with this for up to
about 10k clients. Boost ASIO can also be used multithreaded, but I assume the
FAIL* internal data structures (Synchronized*) will become a bottleneck first.
The code now additionally depends on Boost Coro and Boost Context, as well as
a C++ 14 compiler, although the only C++14 feature required is a lambda capture
with initializer, such as [ x = std::move(x) ]. gcc-4.9.2 does this.
The code could (and probably should) be cleaned up more. Comments are wordy,
code is unnecessary now (multiple server threads), code is not self-contained
(headers spread dependencies), many ifdef's (server performance measuring
should be runtime rather than a compile time option), and much more. But for
this patch I was going for a minimal changeset the get the functionality in,
to have an easier review. Alas, FAIL* has no Unit-test suite to run the changes
against.
To handle such a large number of clients more changes were necessary, for
example server status output is now performed every 1s, instead for every
request.
The class Minion was removed completely; the only thing it was doing was
encapsulate an int.
The server has now a runtime-configurable port, or it can select a free port on
its own if none is specified. This requires the CampaignManager to add a port
argument and instantiate the JobServer dynamically.
Change-Id: Iad9238972161f95f5802bd2251116f8aeee14884
The FailBochs client is not linked by the Bochs build system anymore, but
by our cmake scripts (make fail-client):
- All Bochs libraries are merged into libfailbochs.a (a new target
within the Bochs Autotools scripts).
- The previous libfail.a is *not* a merge of all Fail* libraries anymore,
but pulls these in via library dependencies.
Additionally I did a lot of build system cleanup, e.g. additional external
libraries may now be pulled in where they're needed.
git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1390 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
