Reland "Move webrtc/{base => rtc_base}" (https://codereview.webrtc.org/2877023002)
Reland the base->rtc_base without adding stub headers (will be done in follow-up CL). This preserves git blame history of all files. BUG=webrtc:7634 NOTRY=True TBR=kwiberg@webrtc.org Change-Id: Iea3bb6f3f67b8374c96337b63e8f5aa3e6181012 Reviewed-on: https://chromium-review.googlesource.com/554611 Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#18821}
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/*
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* Copyright 2016 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_BASE_REFCOUNTEDOBJECT_H_
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#define WEBRTC_BASE_REFCOUNTEDOBJECT_H_
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#include <utility>
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#include "webrtc/base/atomicops.h"
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namespace rtc {
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template <class T>
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class RefCountedObject : public T {
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public:
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RefCountedObject() {}
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template <class P0>
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explicit RefCountedObject(P0&& p0) : T(std::forward<P0>(p0)) {}
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template <class P0, class P1, class... Args>
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RefCountedObject(P0&& p0, P1&& p1, Args&&... args)
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: T(std::forward<P0>(p0),
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std::forward<P1>(p1),
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std::forward<Args>(args)...) {}
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virtual int AddRef() const { return AtomicOps::Increment(&ref_count_); }
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virtual int Release() const {
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int count = AtomicOps::Decrement(&ref_count_);
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if (!count) {
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delete this;
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}
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return count;
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}
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// Return whether the reference count is one. If the reference count is used
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// in the conventional way, a reference count of 1 implies that the current
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// thread owns the reference and no other thread shares it. This call
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// performs the test for a reference count of one, and performs the memory
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// barrier needed for the owning thread to act on the object, knowing that it
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// has exclusive access to the object.
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virtual bool HasOneRef() const {
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return AtomicOps::AcquireLoad(&ref_count_) == 1;
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}
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protected:
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virtual ~RefCountedObject() {}
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mutable volatile int ref_count_ = 0;
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};
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} // namespace rtc
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#endif // WEBRTC_BASE_REFCOUNTEDOBJECT_H_
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