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authorVincent Ambo <mail@tazj.in>2020-07-15T07·20+0100
committerVincent Ambo <mail@tazj.in>2020-07-15T07·23+0100
commit1213b086a1015a662ab7ebd658f784534fd3116a (patch)
treed3bc8f3b7f40b8b60f0ef6fbd649cf765f4fdfb6 /third_party/immer/benchmark/set/access.hpp
parent1390827b9ea1e04bc9863e48930bfd16db3b716e (diff)
parent7f19d641647ac4ef313ed88d6b5c140983ce5436 (diff)
merge(3p/immer): Subtree merge at 'ad3e3556d' as 'third_party/immer' r/1299
Change-Id: I9636a41ad44b4218293833fd3e9456d9b07c731b
Diffstat (limited to 'third_party/immer/benchmark/set/access.hpp')
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diff --git a/third_party/immer/benchmark/set/access.hpp b/third_party/immer/benchmark/set/access.hpp
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+//
+// immer: immutable data structures for C++
+// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
+//
+// This software is distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
+//
+
+#pragma once
+
+#include "benchmark/config.hpp"
+
+#include <immer/set.hpp>
+#include <hash_trie.hpp> // Phil Nash
+#include <boost/container/flat_set.hpp>
+#include <set>
+#include <unordered_set>
+
+namespace {
+
+template <typename T=unsigned>
+auto make_generator_ranged(std::size_t runs)
+{
+    assert(runs > 0);
+    auto engine = std::default_random_engine{13};
+    auto dist = std::uniform_int_distribution<T>{0, (T)runs-1};
+    auto r = std::vector<T>(runs);
+    std::generate_n(r.begin(), runs, std::bind(dist, engine));
+    return r;
+}
+
+template <typename Generator, typename Set>
+auto benchmark_access_std()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n  = meter.param<N>();
+        auto g1 = Generator{}(n);
+        auto g2 = make_generator_ranged(n);
+
+        auto v = Set{};
+        for (auto i = 0u; i < n; ++i)
+            v.insert(g1[i]);
+
+        measure(meter, [&] {
+            auto c = 0u;
+            for (auto i = 0u; i < n; ++i)
+                c += v.count(g1[g2[i]]);
+            volatile auto r = c;
+            return r;
+        });
+    };
+}
+
+template <typename Generator, typename Set>
+auto benchmark_access_hamt()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n = meter.param<N>();
+        auto g1 = Generator{}(n);
+        auto g2 = make_generator_ranged(n);
+
+        auto v = Set{};
+        for (auto i = 0u; i < n; ++i)
+            v.insert(g1[i]);
+
+        measure(meter, [&] {
+            auto c = 0u;
+            for (auto i = 0u; i < n; ++i) {
+                auto& x = g1[g2[i]];
+                auto leaf = v.find(x).leaf();
+                c += !!(leaf && leaf->find(x));
+            }
+            volatile auto r = c;
+            return r;
+        });
+    };
+}
+
+
+template <typename Generator, typename Set>
+auto benchmark_access()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n = meter.param<N>();
+        auto g1 = Generator{}(n);
+        auto g2 = make_generator_ranged(n);
+
+        auto v = Set{};
+        for (auto i = 0u; i < n; ++i)
+            v = v.insert(g1[i]);
+
+        measure(meter, [&] {
+            auto c = 0u;
+            for (auto i = 0u; i < n; ++i)
+                c += v.count(g1[g2[i]]);
+            volatile auto r = c;
+            return r;
+        });
+    };
+}
+
+template <typename Generator, typename Set>
+auto benchmark_bad_access_std()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n = meter.param<N>();
+        auto g1 = Generator{}(n*2);
+
+        auto v = Set{};
+        for (auto i = 0u; i < n; ++i)
+            v.insert(g1[i]);
+
+        measure(meter, [&] {
+            auto c = 0u;
+            for (auto i = 0u; i < n; ++i)
+                c += v.count(g1[n+i]);
+            volatile auto r = c;
+            return r;
+        });
+    };
+}
+
+template <typename Generator, typename Set>
+auto benchmark_bad_access_hamt()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n = meter.param<N>();
+        auto g1 = Generator{}(n*2);
+
+        auto v = Set{};
+        for (auto i = 0u; i < n; ++i)
+            v.insert(g1[i]);
+
+        measure(meter, [&] {
+            auto c = 0u;
+            for (auto i = 0u; i < n; ++i) {
+                auto& x = g1[n+i];
+                auto leaf = v.find(x).leaf();
+                c += !!(leaf && leaf->find(x));
+            }
+            volatile auto r = c;
+            return r;
+        });
+    };
+}
+
+
+template <typename Generator, typename Set>
+auto benchmark_bad_access()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n = meter.param<N>();
+        auto g1 = Generator{}(n*2);
+
+        auto v = Set{};
+        for (auto i = 0u; i < n; ++i)
+            v = v.insert(g1[i]);
+
+        measure(meter, [&] {
+            auto c = 0u;
+            for (auto i = 0u; i < n; ++i)
+                c += v.count(g1[n+i]);
+            volatile auto r = c;
+            return r;
+        });
+    };
+}
+
+} // namespace