1 files changed, 57 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/task_queue/pending_task_safety_flag.cc b/third_party/libwebrtc/api/task_queue/pending_task_safety_flag.cc
new file mode 100644
index 0000000000..437ce0755d
--- /dev/null
+++ b/third_party/libwebrtc/api/task_queue/pending_task_safety_flag.cc
@@ -0,0 +1,57 @@
+/*
+ *  Copyright 2020 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 "api/task_queue/pending_task_safety_flag.h"
+
+namespace webrtc {
+
+// static
+rtc::scoped_refptr<PendingTaskSafetyFlag> PendingTaskSafetyFlag::CreateInternal(
+    bool alive) {
+  // Explicit new, to access private constructor.
+  return rtc::scoped_refptr<PendingTaskSafetyFlag>(
+      new PendingTaskSafetyFlag(alive));
+}
+
+// static
+rtc::scoped_refptr<PendingTaskSafetyFlag> PendingTaskSafetyFlag::Create() {
+  return CreateInternal(true);
+}
+
+rtc::scoped_refptr<PendingTaskSafetyFlag>
+PendingTaskSafetyFlag::CreateDetached() {
+  rtc::scoped_refptr<PendingTaskSafetyFlag> safety_flag = CreateInternal(true);
+  safety_flag->main_sequence_.Detach();
+  return safety_flag;
+}
+
+rtc::scoped_refptr<PendingTaskSafetyFlag>
+PendingTaskSafetyFlag::CreateDetachedInactive() {
+  rtc::scoped_refptr<PendingTaskSafetyFlag> safety_flag = CreateInternal(false);
+  safety_flag->main_sequence_.Detach();
+  return safety_flag;
+}
+
+void PendingTaskSafetyFlag::SetNotAlive() {
+  RTC_DCHECK_RUN_ON(&main_sequence_);
+  alive_ = false;
+}
+
+void PendingTaskSafetyFlag::SetAlive() {
+  RTC_DCHECK_RUN_ON(&main_sequence_);
+  alive_ = true;
+}
+
+bool PendingTaskSafetyFlag::alive() const {
+  RTC_DCHECK_RUN_ON(&main_sequence_);
+  return alive_;
+}
+
+}  // namespace webrtc