Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 89 insertions, 0 deletions

diff --git a/third_party/libwebrtc/rtc_base/ref_counted_object.h b/third_party/libwebrtc/rtc_base/ref_counted_object.h
new file mode 100644
index 0000000000..418c3d80cc
--- /dev/null
+++ b/third_party/libwebrtc/rtc_base/ref_counted_object.h
@@ -0,0 +1,89 @@
+/*
+ *  Copyright 2016 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.
+ */
+#ifndef RTC_BASE_REF_COUNTED_OBJECT_H_
+#define RTC_BASE_REF_COUNTED_OBJECT_H_
+
+#include "api/scoped_refptr.h"
+#include "rtc_base/ref_count.h"
+#include "rtc_base/ref_counter.h"
+
+namespace rtc {
+
+template <class T>
+class RefCountedObject : public T {
+ public:
+  RefCountedObject() {}
+
+  RefCountedObject(const RefCountedObject&) = delete;
+  RefCountedObject& operator=(const RefCountedObject&) = delete;
+
+  template <class P0>
+  explicit RefCountedObject(P0&& p0) : T(std::forward<P0>(p0)) {}
+
+  template <class P0, class P1, class... Args>
+  RefCountedObject(P0&& p0, P1&& p1, Args&&... args)
+      : T(std::forward<P0>(p0),
+          std::forward<P1>(p1),
+          std::forward<Args>(args)...) {}
+
+  void AddRef() const override { ref_count_.IncRef(); }
+
+  RefCountReleaseStatus Release() const override {
+    const auto status = ref_count_.DecRef();
+    if (status == RefCountReleaseStatus::kDroppedLastRef) {
+      delete this;
+    }
+    return status;
+  }
+
+  // Return whether the reference count is one. If the reference count is used
+  // in the conventional way, a reference count of 1 implies that the current
+  // thread owns the reference and no other thread shares it. This call
+  // performs the test for a reference count of one, and performs the memory
+  // barrier needed for the owning thread to act on the object, knowing that it
+  // has exclusive access to the object.
+  virtual bool HasOneRef() const { return ref_count_.HasOneRef(); }
+
+ protected:
+  ~RefCountedObject() override {}
+
+  mutable webrtc::webrtc_impl::RefCounter ref_count_{0};
+};
+
+template <class T>
+class FinalRefCountedObject final : public T {
+ public:
+  using T::T;
+  // Above using declaration propagates a default move constructor
+  // FinalRefCountedObject(FinalRefCountedObject&& other), but we also need
+  // move construction from T.
+  explicit FinalRefCountedObject(T&& other) : T(std::move(other)) {}
+  FinalRefCountedObject(const FinalRefCountedObject&) = delete;
+  FinalRefCountedObject& operator=(const FinalRefCountedObject&) = delete;
+
+  void AddRef() const { ref_count_.IncRef(); }
+  RefCountReleaseStatus Release() const {
+    const auto status = ref_count_.DecRef();
+    if (status == RefCountReleaseStatus::kDroppedLastRef) {
+      delete this;
+    }
+    return status;
+  }
+  bool HasOneRef() const { return ref_count_.HasOneRef(); }
+
+ private:
+  ~FinalRefCountedObject() = default;
+
+  mutable webrtc::webrtc_impl::RefCounter ref_count_{0};
+};
+
+}  // namespace rtc
+
+#endif  // RTC_BASE_REF_COUNTED_OBJECT_H_