From aaa02e7f24a2f7d1d390053e3b5007a304fd5f21 Mon Sep 17 00:00:00 2001
From: Jeremy Rubin <jeremy.l.rubin@gmail.com>
Date: Tue, 10 Jan 2017 14:49:36 -0500
Subject: [PATCH] Add prevector destructor benchmark

---
 src/Makefile.bench.include         |  3 ++-
 src/bench/prevector_destructor.cpp | 36 ++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 src/bench/prevector_destructor.cpp

diff --git a/src/Makefile.bench.include b/src/Makefile.bench.include
index e58bd9dfb..2dc240e24 100644
--- a/src/Makefile.bench.include
+++ b/src/Makefile.bench.include
@@ -24,7 +24,8 @@ bench_bench_bitcoin_SOURCES = \
   bench/base58.cpp \
   bench/lockedpool.cpp \
   bench/perf.cpp \
-  bench/perf.h
+  bench/perf.h \
+  bench/prevector_destructor.cpp
 
 nodist_bench_bench_bitcoin_SOURCES = $(GENERATED_TEST_FILES)
 
diff --git a/src/bench/prevector_destructor.cpp b/src/bench/prevector_destructor.cpp
new file mode 100644
index 000000000..55af3de4f
--- /dev/null
+++ b/src/bench/prevector_destructor.cpp
@@ -0,0 +1,36 @@
+// Copyright (c) 2015-2017 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "bench.h"
+#include "prevector.h"
+
+static void PrevectorDestructor(benchmark::State& state)
+{
+    while (state.KeepRunning()) {
+        for (auto x = 0; x < 1000; ++x) {
+            prevector<28, unsigned char> t0;
+            prevector<28, unsigned char> t1;
+            t0.resize(28);
+            t1.resize(29);
+        }
+    }
+}
+
+static void PrevectorClear(benchmark::State& state)
+{
+
+    while (state.KeepRunning()) {
+        for (auto x = 0; x < 1000; ++x) {
+            prevector<28, unsigned char> t0;
+            prevector<28, unsigned char> t1;
+            t0.resize(28);
+            t0.clear();
+            t1.resize(29);
+            t0.clear();
+        }
+    }
+}
+
+BENCHMARK(PrevectorDestructor);
+BENCHMARK(PrevectorClear);