CLANG Tidy

Summary: Closes https://github.com/facebook/rocksdb/pull/2502

Differential Revision: D5326498

Pulled By: siying

fbshipit-source-id: 2f0ac6dc6ca5ddb23cecf67a278c086e52646714

include/rocksdb/env.h

@@ -900,7 +900,7 @@ class EnvWrapper : public Env {
  public:
   // Initialize an EnvWrapper that delegates all calls to *t
   explicit EnvWrapper(Env* t) : target_(t) { }
-  virtual ~EnvWrapper();
+  ~EnvWrapper() override;
 
   // Return the target to which this Env forwards all calls
   Env* target() const { return target_; }
@@ -935,8 +935,8 @@ class EnvWrapper : public Env {
                          const EnvOptions& options) override {
     return target_->NewRandomRWFile(fname, result, options);
   }
-  virtual Status NewDirectory(const std::string& name,
-                              unique_ptr<Directory>* result) override {
+  Status NewDirectory(const std::string& name,
+                      unique_ptr<Directory>* result) override {
     return target_->NewDirectory(name, result);
   }
   Status FileExists(const std::string& f) override {
@@ -998,15 +998,14 @@ class EnvWrapper : public Env {
     return target_->StartThread(f, a);
   }
   void WaitForJoin() override { return target_->WaitForJoin(); }
-  virtual unsigned int GetThreadPoolQueueLen(
-      Priority pri = LOW) const override {
+  unsigned int GetThreadPoolQueueLen(Priority pri = LOW) const override {
     return target_->GetThreadPoolQueueLen(pri);
   }
-  virtual Status GetTestDirectory(std::string* path) override {
+  Status GetTestDirectory(std::string* path) override {
     return target_->GetTestDirectory(path);
   }
-  virtual Status NewLogger(const std::string& fname,
-                           shared_ptr<Logger>* result) override {
+  Status NewLogger(const std::string& fname,
+                   shared_ptr<Logger>* result) override {
     return target_->NewLogger(fname, result);
   }
   uint64_t NowMicros() override { return target_->NowMicros(); }
@@ -1098,10 +1097,10 @@ class WritableFileWrapper : public WritableFile {
     return target_->InvalidateCache(offset, length);
   }
 
-  virtual void SetPreallocationBlockSize(size_t size) override {
+  void SetPreallocationBlockSize(size_t size) override {
     target_->SetPreallocationBlockSize(size);
   }
-  virtual void PrepareWrite(size_t offset, size_t len) override {
+  void PrepareWrite(size_t offset, size_t len) override {
     target_->PrepareWrite(offset, len);
   }
 

include/rocksdb/flush_block_policy.h

@@ -48,11 +48,9 @@ class FlushBlockBySizePolicyFactory : public FlushBlockPolicyFactory {
  public:
   FlushBlockBySizePolicyFactory() {}
 
-  virtual const char* Name() const override {
-    return "FlushBlockBySizePolicyFactory";
-  }
+  const char* Name() const override { return "FlushBlockBySizePolicyFactory"; }
 
-  virtual FlushBlockPolicy* NewFlushBlockPolicy(
+  FlushBlockPolicy* NewFlushBlockPolicy(
       const BlockBasedTableOptions& table_options,
       const BlockBuilder& data_block_builder) const override;
 

include/rocksdb/merge_operator.h

@@ -188,7 +188,7 @@ class MergeOperator {
 // The simpler, associative merge operator.
 class AssociativeMergeOperator : public MergeOperator {
  public:
-  virtual ~AssociativeMergeOperator() {}
+  ~AssociativeMergeOperator() override {}
 
   // Gives the client a way to express the read -> modify -> write semantics
   // key:           (IN) The key that's associated with this merge operation.
@@ -212,14 +212,12 @@ class AssociativeMergeOperator : public MergeOperator {
 
  private:
   // Default implementations of the MergeOperator functions
-  virtual bool FullMergeV2(const MergeOperationInput& merge_in,
-                           MergeOperationOutput* merge_out) const override;
+  bool FullMergeV2(const MergeOperationInput& merge_in,
+                   MergeOperationOutput* merge_out) const override;
 
-  virtual bool PartialMerge(const Slice& key,
-                            const Slice& left_operand,
-                            const Slice& right_operand,
-                            std::string* new_value,
-                            Logger* logger) const override;
+  bool PartialMerge(const Slice& key, const Slice& left_operand,
+                    const Slice& right_operand, std::string* new_value,
+                    Logger* logger) const override;
 };
 
 }  // namespace rocksdb

include/rocksdb/utilities/sim_cache.h

@@ -39,9 +39,9 @@ class SimCache : public Cache {
  public:
   SimCache() {}
 
-  virtual ~SimCache() {}
+  ~SimCache() override {}
 
-  virtual const char* Name() const override { return "SimCache"; }
+  const char* Name() const override { return "SimCache"; }
 
   // returns the maximum configured capacity of the simcache for simulation
   virtual size_t GetSimCapacity() const = 0;

include/rocksdb/utilities/transaction_db.h

@@ -148,7 +148,7 @@ class TransactionDB : public StackableDB {
       StackableDB* db, const TransactionDBOptions& txn_db_options,
       const std::vector<size_t>& compaction_enabled_cf_indices,
       const std::vector<ColumnFamilyHandle*>& handles, TransactionDB** dbptr);
-  virtual ~TransactionDB() {}
+  ~TransactionDB() override {}
 
   // Starts a new Transaction.
   //

include/rocksdb/utilities/write_batch_with_index.h

@@ -97,7 +97,7 @@ class WriteBatchWithIndex : public WriteBatchBase {
       size_t reserved_bytes = 0, bool overwrite_key = false,
       size_t max_bytes = 0);
 
-  virtual ~WriteBatchWithIndex();
+  ~WriteBatchWithIndex() override;
 
   using WriteBatchBase::Put;
   Status Put(ColumnFamilyHandle* column_family, const Slice& key,

include/rocksdb/write_batch.h

@@ -61,7 +61,7 @@ struct SavePoint {
 class WriteBatch : public WriteBatchBase {
  public:
   explicit WriteBatch(size_t reserved_bytes = 0, size_t max_bytes = 0);
-  ~WriteBatch();
+  ~WriteBatch() override;
 
   using WriteBatchBase::Put;
   // Store the mapping "key->value" in the database.

java/src/test/java/org/rocksdb/WriteBatchThreadedTest.java

@@ -62,8 +62,7 @@ public class WriteBatchThreadedTest {
           try (final WriteBatch wb = new WriteBatch();
                final WriteOptions w_opt = new WriteOptions()) {
             for (int i = offset; i < offset + 100; i++) {
-              wb.put(ByteBuffer.allocate(4).putInt(i).array(),
-                  "parallel rocks test".getBytes());
+              wb.put(ByteBuffer.allocate(4).putInt(i).array(), "parallel rocks test".getBytes());
             }
             db.write(w_opt, wb);
           }