YugabyteDB (2.13.0.0-b42, bfc6a6643e7399ac8a0e81d06a3ee6d6571b33ab)

// Copyright (c) 2012 The Chromium Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

//

// The following only applies to changes made to this file as part of YugaByte development.

//

// Portions Copyright (c) YugaByte, Inc.

//

// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except

// in compliance with the License.  You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software distributed under the License

// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express

// or implied.  See the License for the specific language governing permissions and limitations

// under the License.

//

#include "yb/gutil/ref_counted_memory.h"

#include <glog/logging.h>

namespace yb {

bool RefCountedMemory::Equals(

    const scoped_refptr<RefCountedMemory>& other) const {

  return other.get() &&

         size() == other->size() &&

         (memcmp(front(), other->front(), size()) == 0);

}

RefCountedMemory::RefCountedMemory() {}

RefCountedMemory::~RefCountedMemory() {}

const unsigned char* RefCountedStaticMemory::front() const {

  return data_;

}

size_t RefCountedStaticMemory::size() const {

  return length_;

}

RefCountedStaticMemory::~RefCountedStaticMemory() {}

RefCountedBytes::RefCountedBytes() {}

RefCountedBytes::RefCountedBytes(std::vector<unsigned char> initializer)

    : data_(std::move(initializer)) {}

RefCountedBytes::RefCountedBytes(const unsigned char* p, size_t size)

    : data_(p, p + size) {}

RefCountedBytes* RefCountedBytes::TakeVector(

    std::vector<unsigned char>* to_destroy) {

  auto bytes = new RefCountedBytes;

  bytes->data_.swap(*to_destroy);

  return bytes;

}

const unsigned char* RefCountedBytes::front() const {

  // STL will assert if we do front() on an empty vector, but calling code

  // expects a NULL.

  return size() ? &data_.front() : nullptr;

}

size_t RefCountedBytes::size() const {

  return data_.size();

}

RefCountedBytes::~RefCountedBytes() {}

RefCountedString::RefCountedString() {}

RefCountedString::~RefCountedString() {}

// static

RefCountedString* RefCountedString::TakeString(std::string* to_destroy) {

  auto self = new RefCountedString;

  to_destroy->swap(self->data_);

  return self;

}

const unsigned char* RefCountedString::front() const {

  return data_.empty() ? nullptr :

         reinterpret_cast<const unsigned char*>(data_.data());

}

size_t RefCountedString::size() const {

  return data_.size();

}

RefCountedMallocedMemory::RefCountedMallocedMemory(

    void* data, size_t length)

    : data_(reinterpret_cast<unsigned char*>(data)), length_(length) {

  DCHECK(data || length == 0);

}

const unsigned char* RefCountedMallocedMemory::front() const {

  return length_ ? data_ : nullptr;

}

size_t RefCountedMallocedMemory::size() const {

  return length_;

}

RefCountedMallocedMemory::~RefCountedMallocedMemory() {

  free(data_);

}

}  //  namespace yb