Lint everything

Summary:
```
arc2 lint --everything
```

run the linter on the whole code repo to fix exisitng lint issues

Test Plan: make check -j64

Reviewers: sdong, rven, anthony, kradhakrishnan, yhchiang

Reviewed By: yhchiang

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D50769

db/db_bench.cc

@@ -377,7 +377,7 @@ DEFINE_int32(random_access_max_buffer_size, 1024 * 1024,
              "Maximum windows randomaccess buffer size");
 
 DEFINE_int32(writable_file_max_buffer_size, 1024 * 1024,
-             "Maximum write buffer for Writeable File");
+             "Maximum write buffer for Writable File");
 
 DEFINE_int32(skip_table_builder_flush, false, "Skip flushing block in "
              "table builder ");

db/listener_test.cc

@@ -533,4 +533,3 @@ int main(int argc, char** argv) {
   ::testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }
-

port/port.h

@@ -19,4 +19,3 @@
 #elif defined(OS_WIN)
 #include "port/win/port_win.h"
 #endif
-

port/port_posix.h

@@ -32,14 +32,11 @@
   #else
     #define PLATFORM_IS_LITTLE_ENDIAN false
   #endif
-#elif defined(OS_FREEBSD)
+#elif defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || \
+    defined(OS_DRAGONFLYBSD) || defined(OS_ANDROID)
   #include <sys/endian.h>
   #include <sys/types.h>
   #define PLATFORM_IS_LITTLE_ENDIAN (_BYTE_ORDER == _LITTLE_ENDIAN)
-#elif defined(OS_OPENBSD) || defined(OS_NETBSD) ||\
-      defined(OS_DRAGONFLYBSD) || defined(OS_ANDROID)
-  #include <sys/types.h>
-  #include <sys/endian.h>
 #else
   #include <endian.h>
 #endif
@@ -159,4 +156,3 @@ extern int GetMaxOpenFiles();
 
 } // namespace port
 } // namespace rocksdb
-

port/win/env_win.cc

@@ -970,8 +970,7 @@ class WinWritableFile : public WritableFile {
   virtual Status PositionedAppend(const Slice& data, uint64_t offset) override {
     Status s;
 
-    SSIZE_T ret = pwrite(hFile_, data.data(), 
-      data.size(), offset);
+    SSIZE_T ret = pwrite(hFile_, data.data(), data.size(), offset);
 
     // Error break
     if (ret < 0) {

port/win/port_win.cc

@@ -67,7 +67,7 @@ bool CondVar::TimedWait(uint64_t abs_time_us) {
   using namespace std::chrono;
 
   // MSVC++ library implements wait_until in terms of wait_for so
-  // we need to convert absoulte wait into relative wait.
+  // we need to convert absolute wait into relative wait.
   microseconds usAbsTime(abs_time_us);
 
   microseconds usNow(

port/win/win_logger.cc

@@ -10,6 +10,8 @@
 // Logger implementation that can be shared by all environments
 // where enough posix functionality is available.
 
+#include "port/win/win_logger.h"
+
 #include <stdint.h>
 #include <algorithm>
 #include <stdio.h>
@@ -21,7 +23,6 @@
 
 #include <Windows.h>
 
-#include "port/win/win_logger.h"
 #include "port/sys_time.h"
 #include "util/iostats_context_imp.h"
 
@@ -53,8 +54,9 @@ void WinLogger::close() { CloseHandle(file_); }
 void WinLogger::Flush() {
   if (flush_pending_) {
     flush_pending_ = false;
-    // With Windows API writes go to OS buffers directly so no fflush needed unlike 
-    // with C runtime API. We don't flush all the way to disk for perf reasons.
+    // With Windows API writes go to OS buffers directly so no fflush needed
+    // unlike with C runtime API. We don't flush all the way to disk
+    // for perf reasons.
   }
 
   last_flush_micros_ = env_->NowMicros();
@@ -141,8 +143,9 @@ void WinLogger::Logv(const char* format, va_list ap) {
         static_cast<uint64_t>(now_tv.tv_sec) * 1000000 + now_tv.tv_usec;
     if (now_micros - last_flush_micros_ >= flush_every_seconds_ * 1000000) {
       flush_pending_ = false;
-      // With Windows API writes go to OS buffers directly so no fflush needed unlike 
-      // with C runtime API. We don't flush all the way to disk for perf reasons.
+      // With Windows API writes go to OS buffers directly so no fflush needed
+      // unlike with C runtime API. We don't flush all the way to disk
+      // for perf reasons.
       last_flush_micros_ = now_micros;
     }
     break;

third-party/gtest-1.7.0/fused-src/gtest/gtest-all.cc

@@ -2592,7 +2592,7 @@ class Hunk {
   // Print a unified diff header for one hunk.
   // The format is
   //   "@@ -<left_start>,<left_length> +<right_start>,<right_length> @@"
-  // where the left/right parts are ommitted if unnecessary.
+  // where the left/right parts are omitted if unnecessary.
   void PrintHeader(std::ostream* ss) const {
     *ss << "@@ ";
     if (removes_) {

util/options_helper.cc

@@ -1384,8 +1384,8 @@ Status GetTableFactoryFromMap(
     return Status::OK();
   } else if (factory_name == PlainTableFactory().Name()) {
     PlainTableOptions pt_opt;
-    s = GetPlainTableOptionsFromMap(PlainTableOptions(), opt_map, 
-                                    &pt_opt, true);
+    s = GetPlainTableOptionsFromMap(PlainTableOptions(), opt_map, &pt_opt,
+                                    true);
     if (!s.ok()) {
       return s;
     }

util/options_test.cc

@@ -535,7 +535,8 @@ TEST_F(OptionsTest, GetPlainTableOptionsFromString) {
              &new_opt));
 
   // unrecognized EncodingType
-  ASSERT_NOK(GetPlainTableOptionsFromString(table_opt,
+  ASSERT_NOK(GetPlainTableOptionsFromString(
+      table_opt,
       "user_key_len=66;bloom_bits_per_key=20;hash_table_ratio=0.5;"
       "encoding_type=kPrefixXX",
       &new_opt));

utilities/merge_operators/string_append/stringappend.cc

@@ -55,6 +55,3 @@ std::shared_ptr<MergeOperator> MergeOperators::CreateStringAppendOperator() {
 }
 
 } // namespace rocksdb
-
-
-

utilities/merge_operators/string_append/stringappend.h

@@ -12,7 +12,8 @@ namespace rocksdb {
 
 class StringAppendOperator : public AssociativeMergeOperator {
  public:
-  StringAppendOperator(char delim_char);    /// Constructor: specify delimiter
+  // Constructor: specify delimiter
+  explicit StringAppendOperator(char delim_char);
 
   virtual bool Merge(const Slice& key,
                      const Slice* existing_value,
@@ -28,4 +29,3 @@ class StringAppendOperator : public AssociativeMergeOperator {
 };
 
 } // namespace rocksdb
-

utilities/merge_operators/string_append/stringappend2.cc

@@ -110,4 +110,3 @@ MergeOperators::CreateStringAppendTESTOperator() {
 }
 
 } // namespace rocksdb
-

utilities/redis/redis_list_iterator.h

@@ -37,8 +37,8 @@
  * @author Deon Nicholas (dnicholas@fb.com)
  */
 
-#ifndef ROCKSDB_LITE
 #pragma once
+#ifndef ROCKSDB_LITE
 
 #include <string>
 
@@ -65,7 +65,7 @@ class RedisListIterator {
   ///  e) result_ will always contain data_[0..cur_byte_) and a header
   ///  f) Whenever corrupt data is encountered or an invalid operation is
   ///      attempted, a RedisListException will immediately be thrown.
-  RedisListIterator(const std::string& list_data)
+  explicit RedisListIterator(const std::string& list_data)
       : data_(list_data.data()),
         num_bytes_(static_cast<uint32_t>(list_data.size())),
         cur_byte_(0),
@@ -73,7 +73,6 @@ class RedisListIterator {
         cur_elem_length_(0),
         length_(0),
         result_() {
-
     // Initialize the result_ (reserve enough space for header)
     InitializeResult();
 
@@ -269,7 +268,7 @@ class RedisListIterator {
                    data_+cur_byte_+ sizeof(uint32_t) + cur_elem_length_);
   }
 
-  /// Will ThrowError() if neccessary.
+  /// Will ThrowError() if necessary.
   /// Checks for common/ubiquitous errors that can arise after most operations.
   /// This method should be called before any reading operation.
   /// If this function succeeds, then we are guaranteed to be in a valid state.