Fully clean up before each round of benchmarks in RangeFindBenchmark.cpp

Summary: [Folly] Fully clean up before each round of benchmarks in `RangeFindBenchmark.cpp`.

The `vstr` and `vstrp` globals need to be cleaned up before each round of benchmarks.

Reviewed By: @​@​nbronson

Differential Revision: D2467254

diff --git a/folly/test/RangeFindBenchmark.cpp b/folly/test/RangeFindBenchmark.cpp
index 7d7a872d99340a48fd50fcd3afb216f2198f9b68..2c920b7246df5213444ecb19ca5e4c0f254a9db7 100644 (file)
--- a/folly/test/RangeFindBenchmark.cpp
+++ b/folly/test/RangeFindBenchmark.cpp
@@ -43,8 +43,11 @@ std::vector<StringPiece> vstrp;
 std::string file;
 
 void initStr(int len) {
-  cout << "string length " << len << ':' << endl;
   str.clear();
+  vstr.clear();
+  vstrp.clear();
+
+  cout << "string length " << len << ':' << endl;
   str.reserve(len + 1);
   str.append(len, 'a');
   str.append(1, 'b');