mem-ruby: Move Bloom Filters to base

All Bloom Filters are completely independent of Ruby, and
therefore can be used everywhere.

As a side effect, Ruby was not using the filters, so
their dependency was removed.

Change-Id: Ic5f430610c33c0791fb81c79101ebe737189497e
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/18875
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>

src/base/filters/BloomFilters.py

@@ -33,7 +33,7 @@ from m5.SimObject import SimObject
 class BloomFilterBase(SimObject):
     type = 'BloomFilterBase'
     abstract = True
-    cxx_header = "mem/ruby/filters/AbstractBloomFilter.hh"
+    cxx_header = "base/filters/base.hh"
     cxx_class = 'BloomFilter::Base'
 
     size = Param.Int(4096, "Number of entries in the filter")
@@ -47,7 +47,7 @@ class BloomFilterBase(SimObject):
 class BloomFilterBlock(BloomFilterBase):
     type = 'BloomFilterBlock'
     cxx_class = 'BloomFilter::Block'
-    cxx_header = "mem/ruby/filters/BlockBloomFilter.hh"
+    cxx_header = "base/filters/block_bloom_filter.hh"
 
     masks_lsbs = VectorParam.Unsigned([Self.offset_bits,
         2 * Self.offset_bits], "Position of the LSB of each mask")
@@ -57,12 +57,12 @@ class BloomFilterBlock(BloomFilterBase):
 class BloomFilterBulk(BloomFilterBase):
     type = 'BloomFilterBulk'
     cxx_class = 'BloomFilter::Bulk'
-    cxx_header = "mem/ruby/filters/BulkBloomFilter.hh"
+    cxx_header = "base/filters/bulk_bloom_filter.hh"
 
 class BloomFilterLSBCounting(BloomFilterBase):
     type = 'BloomFilterLSBCounting'
     cxx_class = 'BloomFilter::LSBCounting'
-    cxx_header = "mem/ruby/filters/LSB_CountingBloomFilter.hh"
+    cxx_header = "base/filters/lsb_counting_bloom_filter.hh"
 
     # By default use 4-bit saturating counters
     max_value = Param.Int(15, "Maximum value of the filter entries")
@@ -73,7 +73,7 @@ class BloomFilterLSBCounting(BloomFilterBase):
 class BloomFilterMultiBitSel(BloomFilterBase):
     type = 'BloomFilterMultiBitSel'
     cxx_class = 'BloomFilter::MultiBitSel'
-    cxx_header = "mem/ruby/filters/MultiBitSelBloomFilter.hh"
+    cxx_header = "base/filters/multi_bit_sel_bloom_filter.hh"
 
     num_hashes = Param.Int(4, "Number of hashes")
     threshold = Self.num_hashes
@@ -83,12 +83,12 @@ class BloomFilterMultiBitSel(BloomFilterBase):
 class BloomFilterH3(BloomFilterMultiBitSel):
     type = 'BloomFilterH3'
     cxx_class = 'BloomFilter::H3'
-    cxx_header = "mem/ruby/filters/H3BloomFilter.hh"
+    cxx_header = "base/filters/h3_bloom_filter.hh"
 
-class BloomFilterMultiGrain(BloomFilterBase):
-    type = 'BloomFilterMultiGrain'
-    cxx_class = 'BloomFilter::MultiGrain'
-    cxx_header = "mem/ruby/filters/MultiGrainBloomFilter.hh"
+class BloomFilterMulti(BloomFilterBase):
+    type = 'BloomFilterMulti'
+    cxx_class = 'BloomFilter::Multi'
+    cxx_header = "base/filters/multi_bloom_filter.hh"
 
     # The base filter should not be used, since this filter is the combination
     # of multiple sub-filters, so we use a dummy value

src/base/filters/SConscript

@@ -1,5 +1,6 @@
 # -*- mode:python -*-
 
+# Copyright (c) 2019 Inria
 # Copyright (c) 2009 The Hewlett-Packard Development Company
 # All rights reserved.
 #
@@ -27,17 +28,15 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 # Authors: Nathan Binkert
+#          Daniel Carvalho
 
 Import('*')
 
-if env['PROTOCOL'] == 'None':
-    Return()
-
 SimObject('BloomFilters.py')
 
-Source('BlockBloomFilter.cc')
-Source('BulkBloomFilter.cc')
-Source('H3BloomFilter.cc')
-Source('LSB_CountingBloomFilter.cc')
-Source('MultiBitSelBloomFilter.cc')
-Source('MultiGrainBloomFilter.cc')
+Source('block_bloom_filter.cc')
+Source('bulk_bloom_filter.cc')
+Source('h3_bloom_filter.cc')
+Source('lsb_counting_bloom_filter.cc')
+Source('multi_bit_sel_bloom_filter.cc')
+Source('multi_bloom_filter.cc')

src/base/filters/base.hh

@@ -29,8 +29,8 @@
  * Authors: Daniel Carvalho
  */
 
-#ifndef __MEM_RUBY_FILTERS_ABSTRACTBLOOMFILTER_HH__
-#define __MEM_RUBY_FILTERS_ABSTRACTBLOOMFILTER_HH__
+#ifndef __BASE_FILTERS_BASE_HH__
+#define __BASE_FILTERS_BASE_HH__
 
 #include <vector>
 
@@ -148,4 +148,4 @@ class Base : public SimObject
 
 } // namespace BloomFilter
 
-#endif // __MEM_RUBY_FILTERS_ABSTRACTBLOOMFILTER_HH__
+#endif // __BASE_FILTERS_BASE_HH__

src/base/filters/block_bloom_filter.cc

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,9 +25,11 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#include "mem/ruby/filters/BlockBloomFilter.hh"
+#include "base/filters/block_bloom_filter.hh"
 
 #include "base/bitfield.hh"
 #include "base/logging.hh"

src/base/filters/block_bloom_filter.hh

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,14 +25,16 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#ifndef __MEM_RUBY_FILTERS_BLOCKBLOOMFILTER_HH__
-#define __MEM_RUBY_FILTERS_BLOCKBLOOMFILTER_HH__
+#ifndef __BASE_FILTERS_BLOCK_BLOOM_FILTER_HH__
+#define __BASE_FILTERS_BLOCK_BLOOM_FILTER_HH__
 
 #include <vector>
 
-#include "mem/ruby/filters/AbstractBloomFilter.hh"
+#include "base/filters/base.hh"
 
 struct BloomFilterBlockParams;
 
@@ -69,4 +72,4 @@ class Block : public Base
 
 } // namespace BloomFilter
 
-#endif // __MEM_RUBY_FILTERS_BLOCKBLOOMFILTER_HH__
+#endif // __BASE_FILTERS_BLOCK_BLOOM_FILTER_HH__

src/base/filters/bulk_bloom_filter.cc

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,9 +25,13 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#include "mem/ruby/filters/BulkBloomFilter.hh"
+#include "base/filters/bulk_bloom_filter.hh"
+
+#include <vector>
 
 #include <limits>
 

src/base/filters/bulk_bloom_filter.hh

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,14 +25,14 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#ifndef __MEM_RUBY_FILTERS_BULKBLOOMFILTER_HH__
-#define __MEM_RUBY_FILTERS_BULKBLOOMFILTER_HH__
+#ifndef __BASE_FILTERS_BULK_BLOOM_FILTER_HH__
+#define __BASE_FILTERS_BULK_BLOOM_FILTER_HH__
 
-#include <vector>
-
-#include "mem/ruby/filters/AbstractBloomFilter.hh"
+#include "base/filters/base.hh"
 
 struct BloomFilterBulkParams;
 
@@ -62,4 +63,4 @@ class Bulk : public Base
 
 } // namespace BloomFilter
 
-#endif // __MEM_RUBY_FILTERS_BULKBLOOMFILTER_HH__
+#endif // __BASE_FILTERS_BULK_BLOOM_FILTER_HH__

src/base/filters/h3_bloom_filter.cc

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,14 +25,16 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#include "mem/ruby/filters/H3BloomFilter.hh"
+#include "base/filters/h3_bloom_filter.hh"
 
 #include <limits>
 
-#include "base/logging.hh"
 #include "base/bitfield.hh"
+#include "base/logging.hh"
 #include "params/BloomFilterH3.hh"
 
 namespace BloomFilter {

src/base/filters/h3_bloom_filter.hh

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,12 +25,14 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#ifndef __MEM_RUBY_FILTERS_H3BLOOMFILTER_HH__
-#define __MEM_RUBY_FILTERS_H3BLOOMFILTER_HH__
+#ifndef __BASE_FILTERS_H3_BLOOM_FILTER_HH__
+#define __BASE_FILTERS_H3_BLOOM_FILTER_HH__
 
-#include "mem/ruby/filters/MultiBitSelBloomFilter.hh"
+#include "base/filters/multi_bit_sel_bloom_filter.hh"
 
 struct BloomFilterH3Params;
 
@@ -51,4 +54,4 @@ class H3 : public MultiBitSel
 
 } // namespace BloomFilter
 
-#endif // __MEM_RUBY_FILTERS_H3BLOOMFILTER_HH__
+#endif // __BASE_FILTERS_H3_BLOOM_FILTER_HH__

src/base/filters/lsb_counting_bloom_filter.cc

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,9 +25,11 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#include "mem/ruby/filters/LSB_CountingBloomFilter.hh"
+#include "base/filters/lsb_counting_bloom_filter.hh"
 
 #include "base/bitfield.hh"
 #include "params/BloomFilterLSBCounting.hh"

src/base/filters/lsb_counting_bloom_filter.hh

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,12 +25,14 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#ifndef __MEM_RUBY_FILTERS_LSB_COUNTINGBLOOMFILTER_HH__
-#define __MEM_RUBY_FILTERS_LSB_COUNTINGBLOOMFILTER_HH__
+#ifndef __BASE_FILTERS_LSB_COUNTING_BLOOM_FILTER_HH__
+#define __BASE_FILTERS_LSB_COUNTING_BLOOM_FILTER_HH__
 
-#include "mem/ruby/filters/AbstractBloomFilter.hh"
+#include "base/filters/base.hh"
 
 struct BloomFilterLSBCountingParams;
 
@@ -56,4 +59,4 @@ class LSBCounting : public Base
 
 } // namespace BloomFilter
 
-#endif //__MEM_RUBY_FILTERS_LSB_COUNTINGBLOOMFILTER_HH__
+#endif //__BASE_FILTERS_LSB_COUNTING_BLOOM_FILTER_HH__

src/base/filters/multi_bit_sel_bloom_filter.cc

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,9 +25,11 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#include "mem/ruby/filters/MultiBitSelBloomFilter.hh"
+#include "base/filters/multi_bit_sel_bloom_filter.hh"
 
 #include <limits>
 

src/base/filters/multi_bit_sel_bloom_filter.hh

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,12 +25,14 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#ifndef __MEM_RUBY_FILTERS_MULTIBITSELBLOOMFILTER_HH__
-#define __MEM_RUBY_FILTERS_MULTIBITSELBLOOMFILTER_HH__
+#ifndef __BASE_FILTERS_MULTI_BIT_SEL_BLOOM_FILTER_HH__
+#define __BASE_FILTERS_MULTI_BIT_SEL_BLOOM_FILTER_HH__
 
-#include "mem/ruby/filters/AbstractBloomFilter.hh"
+#include "base/filters/base.hh"
 
 struct BloomFilterMultiBitSelParams;
 
@@ -76,4 +79,4 @@ class MultiBitSel : public Base
 
 } // namespace BloomFilter
 
-#endif // __MEM_RUBY_FILTERS_MULTIBITSELBLOOMFILTER_HH__
+#endif // __BASE_FILTERS_MULTI_BIT_SEL_BLOOM_FILTER_HH__

src/base/filters/multi_bloom_filter.cc

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,26 +25,28 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#include "mem/ruby/filters/MultiGrainBloomFilter.hh"
+#include "base/filters/multi_bloom_filter.hh"
 
 #include "base/logging.hh"
-#include "params/BloomFilterMultiGrain.hh"
+#include "params/BloomFilterMulti.hh"
 
 namespace BloomFilter {
 
-MultiGrain::MultiGrain(const BloomFilterMultiGrainParams* p)
+Multi::Multi(const BloomFilterMultiParams* p)
     : Base(p), filters(p->filters)
 {
 }
 
-MultiGrain::~MultiGrain()
+Multi::~Multi()
 {
 }
 
 void
-MultiGrain::clear()
+Multi::clear()
 {
     for (auto& sub_filter : filters) {
         sub_filter->clear();
@@ -51,9 +54,9 @@ MultiGrain::clear()
 }
 
 void
-MultiGrain::merge(const Base* other)
+Multi::merge(const Base* other)
 {
-    auto* cast_other = static_cast<const MultiGrain*>(other);
+    auto* cast_other = static_cast<const Multi*>(other);
     assert(filters.size() == cast_other->filters.size());
     for (int i = 0; i < filters.size(); ++i){
         filters[i]->merge(cast_other->filters[i]);
@@ -61,7 +64,7 @@ MultiGrain::merge(const Base* other)
 }
 
 void
-MultiGrain::set(Addr addr)
+Multi::set(Addr addr)
 {
     for (auto& sub_filter : filters) {
         sub_filter->set(addr);
@@ -69,7 +72,7 @@ MultiGrain::set(Addr addr)
 }
 
 void
-MultiGrain::unset(Addr addr)
+Multi::unset(Addr addr)
 {
     for (auto& sub_filter : filters) {
         sub_filter->unset(addr);
@@ -77,7 +80,7 @@ MultiGrain::unset(Addr addr)
 }
 
 bool
-MultiGrain::isSet(Addr addr) const
+Multi::isSet(Addr addr) const
 {
     int count = 0;
     for (const auto& sub_filter : filters) {
@@ -89,7 +92,7 @@ MultiGrain::isSet(Addr addr) const
 }
 
 int
-MultiGrain::getCount(Addr addr) const
+Multi::getCount(Addr addr) const
 {
     int count = 0;
     for (const auto& sub_filter : filters) {
@@ -99,7 +102,7 @@ MultiGrain::getCount(Addr addr) const
 }
 
 int
-MultiGrain::getTotalCount() const
+Multi::getTotalCount() const
 {
     int count = 0;
     for (const auto& sub_filter : filters) {
@@ -110,9 +113,9 @@ MultiGrain::getTotalCount() const
 
 } // namespace BloomFilter
 
-BloomFilter::MultiGrain*
-BloomFilterMultiGrainParams::create()
+BloomFilter::Multi*
+BloomFilterMultiParams::create()
 {
-    return new BloomFilter::MultiGrain(this);
+    return new BloomFilter::Multi(this);
 }
 

src/base/filters/multi_bloom_filter.hh

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2019 Inria
  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
  * All rights reserved.
  *
@@ -24,16 +25,18 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Daniel Carvalho
  */
 
-#ifndef __MEM_RUBY_FILTERS_MULTIGRAINBLOOMFILTER_HH__
-#define __MEM_RUBY_FILTERS_MULTIGRAINBLOOMFILTER_HH__
+#ifndef __BASE_FILTERS_MULTI_BLOOM_FILTER_HH__
+#define __BASE_FILTERS_MULTI_BLOOM_FILTER_HH__
 
 #include <vector>
 
-#include "mem/ruby/filters/AbstractBloomFilter.hh"
+#include "base/filters/base.hh"
 
-struct BloomFilterMultiGrainParams;
+struct BloomFilterMultiParams;
 
 namespace BloomFilter {
 
@@ -42,11 +45,11 @@ namespace BloomFilter {
  * functionality. The results of the operations are the results of applying
  * them to each sub-filter.
  */
-class MultiGrain : public Base
+class Multi : public Base
 {
   public:
-    MultiGrain(const BloomFilterMultiGrainParams* p);
-    ~MultiGrain();
+    Multi(const BloomFilterMultiParams* p);
+    ~Multi();
 
     void clear() override;
     void set(Addr addr) override;
@@ -64,4 +67,4 @@ class MultiGrain : public Base
 
 } // namespace BloomFilter
 
-#endif // __MEM_RUBY_FILTERS_MULTIGRAINBLOOMFILTER_HH__
+#endif // __BASE_FILTERS_MULTI_BLOOM_FILTER_HH__

src/mem/ruby/SConscript

@@ -125,7 +125,6 @@ MakeInclude('common/MachineID.hh')
 MakeInclude('common/NetDest.hh')
 MakeInclude('common/Set.hh')
 MakeInclude('common/WriteMask.hh')
-MakeInclude('filters/AbstractBloomFilter.hh')
 MakeInclude('network/MessageBuffer.hh')
 MakeInclude('structures/CacheMemory.hh')
 MakeInclude('structures/DirectoryMemory.hh')

src/mem/ruby/protocol/RubySlicc_Types.sm

@@ -233,15 +233,6 @@ structure (TimerTable, inport="yes", external = "yes") {
   bool isSet(Addr);
 }
 
-structure (AbstractBloomFilter, external = "yes") {
-  void clear(int);
-  void set(Addr, int);
-  void unset(Addr, int);
-
-  bool isSet(Addr, int);
-  int getCount(Addr, int);
-}
-
 structure (Prefetcher, external = "yes") {
     void observeMiss(Addr, RubyRequestType);
     void observePfHit(Addr);