From 02c402366613c106b79a84bb28a1ce56b9b43ed5 Mon Sep 17 00:00:00 2001
From: sdong <siying.d@fb.com>
Date: Tue, 5 Aug 2014 11:24:01 -0700
Subject: [PATCH] Remove port::MemoryBarrier() from table_reader_bench

Summary: port::MemoryBarrier() is not recommended to use outside of port. Remove it.

Test Plan: run table_reader_bench

Reviewers: ljin, yhchiang, igor

Reviewed By: igor

Subscribers: leveldb

Differential Revision: https://reviews.facebook.net/D21075
---
 table/table_reader_bench.cc | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/table/table_reader_bench.cc b/table/table_reader_bench.cc
index 80c8eb2f8..effa90a0b 100644
--- a/table/table_reader_bench.cc
+++ b/table/table_reader_bench.cc
@@ -144,14 +144,12 @@ void TableReaderBenchmark(Options& opts, EnvOptions& env_options,
           // Query one existing key;
           std::string key = MakeKey(r1, r2, through_db);
           uint64_t start_time = Now(env, measured_by_nanosecond);
-          port::MemoryBarrier();
           if (!through_db) {
             s = table_reader->Get(read_options, key, arg, DummySaveValue,
                                   nullptr);
           } else {
             s = db->Get(read_options, key, &result);
           }
-          port::MemoryBarrier();
           hist.Add(Now(env, measured_by_nanosecond) - start_time);
         } else {
           int r2_len;
@@ -167,7 +165,6 @@ void TableReaderBenchmark(Options& opts, EnvOptions& env_options,
           std::string end_key = MakeKey(r1, r2 + r2_len, through_db);
           uint64_t total_time = 0;
           uint64_t start_time = Now(env, measured_by_nanosecond);
-          port::MemoryBarrier();
           Iterator* iter;
           if (!through_db) {
             iter = table_reader->NewIterator(read_options);
@@ -180,7 +177,6 @@ void TableReaderBenchmark(Options& opts, EnvOptions& env_options,
               break;
             }
             // verify key;
-            port::MemoryBarrier();
             total_time += Now(env, measured_by_nanosecond) - start_time;
             assert(Slice(MakeKey(r1, r2 + count, through_db)) == iter->key());
             start_time = Now(env, measured_by_nanosecond);
@@ -195,7 +191,6 @@ void TableReaderBenchmark(Options& opts, EnvOptions& env_options,
             assert(false);
           }
           delete iter;
-          port::MemoryBarrier();
           total_time += Now(env, measured_by_nanosecond) - start_time;
           hist.Add(total_time);
         }