Add GCSFilterDecode and GCSBlockFilterGetHash benchmarks.

All of the benchmarks are standardized on the BASIC filter parameters
so we can compare between all the benchmarks. All the GCS
benchmarks are renamed to have "GCS" as the prefix.

Author: pstratem

src/bench/gcs_filter.cpp

@@ -5,7 +5,7 @@
 #include <bench/bench.h>
 #include <blockfilter.h>
 
-static void ConstructGCSFilter(benchmark::Bench& bench)
+static const GCSFilter::ElementSet GenerateGCSTestElements()
 {
     GCSFilter::ElementSet elements;
     for (int i = 0; i < 10000; ++i) {
@@ -15,29 +15,56 @@ static void ConstructGCSFilter(benchmark::Bench& bench)
         elements.insert(std::move(element));
     }
 
+    return elements;
+}
+
+static void GCSBlockFilterGetHash(benchmark::Bench& bench)
+{
+    auto elements = GenerateGCSTestElements();
+
+    GCSFilter filter({0, 0, BASIC_FILTER_P, BASIC_FILTER_M}, elements);
+    BlockFilter block_filter(BlockFilterType::BASIC, {}, filter.GetEncoded(), /*skip_decode_check=*/false);
+
+    bench.run([&] {
+        block_filter.GetHash();
+    });
+}
+
+static void GCSFilterConstruct(benchmark::Bench& bench)
+{
+    auto elements = GenerateGCSTestElements();
+
     uint64_t siphash_k0 = 0;
     bench.batch(elements.size()).unit("elem").run([&] {
-        GCSFilter filter({siphash_k0, 0, 20, 1 << 20}, elements);
+        GCSFilter filter({siphash_k0, 0, BASIC_FILTER_P, BASIC_FILTER_M}, elements);
 
         siphash_k0++;
     });
 }
 
-static void MatchGCSFilter(benchmark::Bench& bench)
+static void GCSFilterDecode(benchmark::Bench& bench)
 {
-    GCSFilter::ElementSet elements;
-    for (int i = 0; i < 10000; ++i) {
-        GCSFilter::Element element(32);
-        element[0] = static_cast<unsigned char>(i);
-        element[1] = static_cast<unsigned char>(i >> 8);
-        elements.insert(std::move(element));
-    }
-    GCSFilter filter({0, 0, 20, 1 << 20}, elements);
+    auto elements = GenerateGCSTestElements();
 
-    bench.unit("elem").run([&] {
-        filter.Match(GCSFilter::Element());
+    GCSFilter filter({0, 0, BASIC_FILTER_P, BASIC_FILTER_M}, elements);
+    auto encoded = filter.GetEncoded();
+
+    bench.run([&] {
+        GCSFilter filter({0, 0, BASIC_FILTER_P, BASIC_FILTER_M}, encoded, /*skip_decode_check=*/false);
     });
 }
 
-BENCHMARK(ConstructGCSFilter);
-BENCHMARK(MatchGCSFilter);
+static void GCSFilterMatch(benchmark::Bench& bench)
+{
+    auto elements = GenerateGCSTestElements();
+
+    GCSFilter filter({0, 0, BASIC_FILTER_P, BASIC_FILTER_M}, elements);
+
+    bench.run([&] {
+        filter.Match(GCSFilter::Element());
+    });
+}
+BENCHMARK(GCSBlockFilterGetHash);
+BENCHMARK(GCSFilterConstruct);
+BENCHMARK(GCSFilterDecode);
+BENCHMARK(GCSFilterMatch);