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Thanks to Joe Gross for pointing this out (again?).
Apologies to anyone who pointed it out earlier and
we didn't listen.
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Requires new "SCUpgradeReq" message that marks upgrades
for store conditionals, so downstream caches can fail
these when they run into invalidations.
See http://www.m5sim.org/flyspray/task/197
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Only set the dirty bit when we actually write to a block
(not if we thought we might but didn't, as in a failed
SC or CAS). This requires makeing sure the dirty bit
stays set when we get an exclusive (writable) copy
in a cache-to-cache transfer from another owner, which
n turn requires copying the mem-inhibit flag from
timing-mode requests to their associated responses.
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One big difference is that PrioHeap puts the smallest element at the
top of the heap, whereas stl puts the largest element on top, so I
changed all comparisons so they did the right thing.
Some usage of PrioHeap was simply changed to a std::vector, using sort
at the right time, other usage had me just use the various heap functions
in the stl.
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add a couple of helper functions to base for deleteing all pointers in
a container and outputting containers to a stream
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This was somewhat tricky because the RefCnt API was somewhat odd. The
biggest confusion was that the the RefCnt object's constructor that
took a TYPE& cloned the object. I created an explicit virtual clone()
function for things that took advantage of this version of the
constructor. I was conservative and used clone() when I was in doubt
of whether or not it was necessary. I still think that there are
probably too many instances of clone(), but hopefully not too many.
I converted several instances of const MsgPtr & to a simple MsgPtr.
If the function wants to avoid the overhead of creating another
reference, then it should just use a regular pointer instead of a ref
counting ptr.
There were a couple of instances where refcounted objects were created
on the stack. This seems pretty dangerous since if you ever
accidentally make a reference to that object with a ref counting
pointer, bad things are bound to happen.
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and force it to True for builds that imply Ruby protocols
(else unexpected things happen when testing these builds
with RUBY=False).
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Further cleanup should probably be done to make this class be non-Ruby
specific and put it in src/base.
There are probably several cases where this class is used, std::bitset
could be used instead.
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In addition to obvious changes, this required a slight change to the slicc
grammar to allow types with :: in them. Otherwise slicc barfs on std::string
which we need for the headers that slicc generates.
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--HG--
rename : configs/ruby/MESI_CMP_directory.py => configs/ruby/protocols/MESI_CMP_directory.py
rename : configs/ruby/MI_example.py => configs/ruby/protocols/MI_example.py
rename : configs/ruby/MOESI_CMP_directory.py => configs/ruby/protocols/MOESI_CMP_directory.py
rename : configs/ruby/MOESI_CMP_token.py => configs/ruby/protocols/MOESI_CMP_token.py
rename : configs/ruby/MOESI_hammer.py => configs/ruby/protocols/MOESI_hammer.py
rename : configs/ruby/networks/MeshDirCorners.py => src/mem/ruby/network/topologies/MeshDirCorners.py
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Previously, the set size was set to 4. This was mostly do to the fact that a
crazy graduate student use to create networks with 256 l2 cache banks. Now it
is far more likely that users will create systems with less than 64 of any
particular controller type. Therefore Ruby should be optimized for a set size
of 1.
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Reordered vnet priorities to agree with PerfectSwitch for protocols MI_example,
MOESI_CMP_token, and MOESI_hammer
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The RubySystem flag no_mem_vec will disable Ruby from allocating it's memory
data array.
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The patch includes direct support for the MI example protocol.
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Fix bug in Ruby Event queue to avoid multiple wakeups of same consumer in
same cycle
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Mostly files missed during import or screwed up during import
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It's a power of two anyway, so why use it in the first place.
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Do not use "using namespace std;" in headers
Include header files as needed
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This makes it easier to add global variables like protocol
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Plus, a minor bugfix that neglects to update blk->contextSrc in certain cases on a cache insert.
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On the config end, if a shared L2 is created for the system, it is
parameterized to have n sharers as defined by option.num_cpus. In addition to
making the cache sharing aware so that discriminating tag policies can make use
of context_ids to make decisions, I added an occupancy AverageStat and an occ %
stat to each cache so that you could know which contexts are occupying how much
cache on average, both in terms of blocks and percentage. Note that since
devices have context_id -1, having an array of occ stats that correspond to
each context_id will break here, so in FS mode I add an extra bucket for device
blocks. This bucket is explicitly not added in SE mode in order to not only
avoid ugliness in the stats.txt file, but to avoid broken stats (some formulas
break when a bucket is 0).
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Fixed data block assignment to not delete if not internally allocated.
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