intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

2 files changed, 126 insertions, 0 deletions

diff --git a/util/generic/benchmark/cont_speed/main.cpp b/util/generic/benchmark/cont_speed/main.cpp
new file mode 100644
index 0000000000..01428c9974
--- /dev/null
+++ b/util/generic/benchmark/cont_speed/main.cpp
@@ -0,0 +1,117 @@
+#include <library/cpp/testing/benchmark/bench.h>
+
+#include <util/generic/xrange.h>
+#include <util/generic/string.h>
+#include <util/generic/vector.h>
+#include <util/generic/buffer.h>
+
+template <class C>
+Y_NO_INLINE void Run(const C& c) {
+    for (size_t i = 0; i < c.size(); ++i) {
+        Y_DO_NOT_OPTIMIZE_AWAY(c[i]);
+    }
+}
+
+template <class C>
+void Do(size_t len, auto& iface) {
+    C c(len, 0);
+
+    for (auto i : xrange(iface.Iterations())) {
+        Y_UNUSED(i);
+        Run(c);
+    }
+}
+
+Y_CPU_BENCHMARK(TVector10, iface) {
+    Do<TVector<char>>(10, iface);
+}
+
+Y_CPU_BENCHMARK(TVector100, iface) {
+    Do<TVector<char>>(100, iface);
+}
+
+Y_CPU_BENCHMARK(TVector1000, iface) {
+    Do<TVector<char>>(1000, iface);
+}
+
+Y_CPU_BENCHMARK(TString10, iface) {
+    Do<TString>(10, iface);
+}
+
+Y_CPU_BENCHMARK(TString100, iface) {
+    Do<TString>(100, iface);
+}
+
+Y_CPU_BENCHMARK(TString1000, iface) {
+    Do<TString>(1000, iface);
+}
+
+Y_CPU_BENCHMARK(StdString10, iface) {
+    Do<std::string>(10, iface);
+}
+
+Y_CPU_BENCHMARK(StdString100, iface) {
+    Do<std::string>(100, iface);
+}
+
+Y_CPU_BENCHMARK(StdString1000, iface) {
+    Do<std::string>(1000, iface);
+}
+
+struct TBuf: public TBuffer {
+    TBuf(size_t len, char v) {
+        for (size_t i = 0; i < len; ++i) {
+            Append(v);
+        }
+    }
+
+    inline const auto& operator[](size_t i) const noexcept {
+        return *(data() + i);
+    }
+};
+
+Y_CPU_BENCHMARK(TBuffer10, iface) {
+    Do<TBuf>(10, iface);
+}
+
+Y_CPU_BENCHMARK(TBuffer100, iface) {
+    Do<TBuf>(100, iface);
+}
+
+Y_CPU_BENCHMARK(TBuffer1000, iface) {
+    Do<TBuf>(1000, iface);
+}
+
+struct TArr {
+    inline TArr(size_t len, char ch)
+        : A(new char[len])
+        , L(len)
+    {
+        for (size_t i = 0; i < L; ++i) {
+            A[i] = ch;
+        }
+    }
+
+    inline const auto& operator[](size_t i) const noexcept {
+        return A[i];
+    }
+
+    inline size_t size() const noexcept {
+        return L;
+    }
+
+    char* A;
+    size_t L;
+};
+
+Y_CPU_BENCHMARK(Pointer10, iface) {
+    Do<TArr>(10, iface);
+}
+
+Y_CPU_BENCHMARK(Pointer100, iface) {
+    Do<TArr>(100, iface);
+}
+
+Y_CPU_BENCHMARK(Pointer1000, iface) {
+    Do<TArr>(1000, iface);
+}
diff --git a/util/generic/benchmark/cont_speed/ya.make b/util/generic/benchmark/cont_speed/ya.make
new file mode 100644
index 0000000000..6ff3fe767c
--- /dev/null
+++ b/util/generic/benchmark/cont_speed/ya.make
@@ -0,0 +1,9 @@
+Y_BENCHMARK()
+
+OWNER(g:util)
+
+SRCS(
+    main.cpp
+)
+
+END()