Files
platform-external-webrtc/webrtc/base/buffer.cc
jbauch eec21bdae3 Reland Use CopyOnWriteBuffer instead of Buffer to avoid unnecessary copies.
This CL removes copy and assign support from Buffer and changes various
parameters from Buffer to CopyOnWriteBuffer so they can be passed along
and copied without actually copying the underlying data.

With this changed some parameters to be "const" and fixed an issue when
creating a CopyOnWriteBuffer with empty data.

BUG=webrtc:5155

Review URL: https://codereview.webrtc.org/1823503002

Cr-Commit-Position: refs/heads/master@{#12062}
2016-03-20 13:15:48 +00:00

44 lines
1.1 KiB
C++

/*
* Copyright 2015 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/base/buffer.h"
#include <algorithm>
#include <utility>
namespace rtc {
Buffer::Buffer() : size_(0), capacity_(0), data_(nullptr) {
RTC_DCHECK(IsConsistent());
}
Buffer::Buffer(Buffer&& buf)
: size_(buf.size()),
capacity_(buf.capacity()),
data_(std::move(buf.data_)) {
RTC_DCHECK(IsConsistent());
buf.OnMovedFrom();
}
Buffer::Buffer(size_t size) : Buffer(size, size) {
}
Buffer::Buffer(size_t size, size_t capacity)
: size_(size),
capacity_(std::max(size, capacity)),
data_(new uint8_t[capacity_]) {
RTC_DCHECK(IsConsistent());
}
// Note: The destructor works even if the buffer has been moved from.
Buffer::~Buffer() = default;
}; // namespace rtc