Squashed 'third_party/immer/' content from commit ad3e3556d

git-subtree-dir: third_party/immer
git-subtree-split: ad3e3556d38bb75966dd24c61a774970a7c7957e

1 files changed, 245 insertions, 0 deletions

diff --git a/benchmark/vector/assoc.hpp b/benchmark/vector/assoc.hpp
new file mode 100644
index 000000000000..5619d7ee6936
--- /dev/null
+++ b/benchmark/vector/assoc.hpp
@@ -0,0 +1,245 @@
+//
+// 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/vector/common.hpp"
+
+namespace {
+
+template <typename Vektor>
+auto benchmark_assoc_std()
+{
+    return
+        [] (nonius::chronometer meter)
+        {
+            auto n = meter.param<N>();
+            auto v = Vektor(n, 0);
+            std::iota(v.begin(), v.end(), 0u);
+            auto all = std::vector<Vektor>(meter.runs(), v);
+            meter.measure([&] (int iter) {
+                auto& r = all[iter];
+                for (auto i = 0u; i < n; ++i)
+                    r[i] = n - i;
+                return r;
+            });
+        };
+}
+
+template <typename Vektor>
+auto benchmark_assoc_random_std()
+{
+    return
+        [](nonius::chronometer meter)
+        {
+            auto n = meter.param<N>();
+            auto g = make_generator(n);
+            auto v = Vektor(n, 0);
+            std::iota(v.begin(), v.end(), 0u);
+            auto all = std::vector<Vektor>(meter.runs(), v);
+            meter.measure([&] (int iter) {
+                auto& r = all[iter];
+                for (auto i = 0u; i < n; ++i)
+                    r[g[i]] = n - i;
+                return r;
+            });
+        };
+}
+
+template <typename Vektor,
+          typename PushFn=push_back_fn,
+          typename SetFn=set_fn>
+auto benchmark_assoc()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n = meter.param<N>();
+        if (n > get_limit<Vektor>{})
+            nonius::skip();
+
+        auto v = Vektor{};
+        for (auto i = 0u; i < n; ++i)
+            v = PushFn{}(std::move(v), i);
+
+        measure(meter, [&] {
+            auto r = v;
+            for (auto i = 0u; i < n; ++i)
+                r = SetFn{}(r, i, n - i);
+            return r;
+        });
+    };
+}
+
+template <typename Vektor,
+          typename PushFn=push_back_fn>
+auto benchmark_assoc_move()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n = meter.param<N>();
+        if (n > get_limit<Vektor>{})
+            nonius::skip();
+
+        auto v = Vektor{};
+        for (auto i = 0u; i < n; ++i)
+            v = PushFn{}(std::move(v), i);
+
+        measure(meter, [&] {
+            auto r = v;
+            for (auto i = 0u; i < n; ++i)
+                r = std::move(r).set(i, n - i);
+            return r;
+        });
+    };
+}
+
+template <typename Vektor,
+          typename PushFn=push_back_fn,
+          typename SetFn=set_fn>
+auto benchmark_assoc_random()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n = meter.param<N>();
+        if (n > get_limit<Vektor>{})
+            nonius::skip();
+
+        auto g = make_generator(n);
+        auto v = Vektor{};
+        for (auto i = 0u; i < n; ++i)
+            v = PushFn{}(std::move(v), i);
+
+        measure(meter, [&] {
+            auto r = v;
+            for (auto i = 0u; i < n; ++i)
+                r = SetFn{}(r, g[i], i);
+            return r;
+        });
+    };
+}
+
+template <typename Vektor,
+          typename PushFn=push_back_fn>
+auto benchmark_assoc_mut()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n = meter.param<N>();
+        if (n > get_limit<Vektor>{})
+            nonius::skip();
+
+        auto v = Vektor{};
+        for (auto i = 0u; i < n; ++i)
+            v = PushFn{}(std::move(v), i);
+
+        measure(meter, [&] {
+            auto r = v.transient();
+            for (auto i = 0u; i < n; ++i)
+                r.set(i, n - i);
+            return r;
+        });
+    };
+}
+
+template <typename Vektor,
+          typename PushFn=push_back_fn>
+auto benchmark_assoc_mut_random()
+{
+    return [] (nonius::chronometer meter)
+    {
+        auto n = meter.param<N>();
+        if (n > get_limit<Vektor>{})
+            nonius::skip();
+
+        auto g = make_generator(n);
+        auto v = Vektor{};
+        for (auto i = 0u; i < n; ++i)
+            v = PushFn{}(std::move(v), i);
+
+        measure(meter, [&] {
+            auto r = v.transient();
+            for (auto i = 0u; i < n; ++i)
+                r.set(g[i], i);
+            return r;
+        });
+    };
+}
+
+template <typename Fn>
+auto benchmark_assoc_librrb(Fn maker)
+{
+    return
+        [=] (nonius::chronometer meter) {
+            auto n = meter.param<N>();
+            auto v = maker(n);
+            measure(
+                meter, [&] {
+                    auto r = v;
+                    for (auto i = 0u; i < n; ++i)
+                        r = rrb_update(r, i, reinterpret_cast<void*>(n - i));
+                    return r;
+                });
+        };
+}
+
+template <typename Fn>
+auto benchmark_assoc_random_librrb(Fn maker)
+{
+    return
+        [=] (nonius::chronometer meter) {
+            auto n = meter.param<N>();
+            auto v = maker(n);
+            auto g = make_generator(n);
+            measure(
+                meter, [&] {
+                    auto r = v;
+                    for (auto i = 0u; i < n; ++i)
+                        r = rrb_update(r, g[i], reinterpret_cast<void*>(i));
+                    return r;
+                });
+        };
+}
+
+template <typename Fn>
+auto benchmark_assoc_mut_librrb(Fn maker)
+{
+    return
+        [=] (nonius::chronometer meter) {
+            auto n = meter.param<N>();
+            auto v = maker(n);
+            measure(
+                meter, [&] {
+                    auto r = rrb_to_transient(v);
+                    for (auto i = 0u; i < n; ++i)
+                        r = transient_rrb_update(
+                            r, i, reinterpret_cast<void*>(i));
+                    return r;
+                });
+        };
+}
+
+template <typename Fn>
+auto benchmark_assoc_mut_random_librrb(Fn maker)
+{
+    return
+        [=] (nonius::chronometer meter) {
+            auto n = meter.param<N>();
+            auto v = maker(n);
+            auto g = make_generator(n);
+            measure(
+                meter, [&] {
+                    auto r = rrb_to_transient(v);
+                    for (auto i = 0u; i < n; ++i)
+                        r = transient_rrb_update(
+                            r, g[i], reinterpret_cast<void*>(i));
+                    return r;
+                });
+        };
+}
+
+} // anonymous namespace