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-rw-r--r--layout/ipc/VsyncChild.cpp94
1 files changed, 94 insertions, 0 deletions
diff --git a/layout/ipc/VsyncChild.cpp b/layout/ipc/VsyncChild.cpp
new file mode 100644
index 000000000..45372b89a
--- /dev/null
+++ b/layout/ipc/VsyncChild.cpp
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "VsyncChild.h"
+
+#include "mozilla/VsyncDispatcher.h"
+#include "nsThreadUtils.h"
+
+namespace mozilla {
+namespace layout {
+
+VsyncChild::VsyncChild()
+ : mObservingVsync(false)
+ , mIsShutdown(false)
+ , mVsyncRate(TimeDuration::Forever())
+{
+ MOZ_ASSERT(NS_IsMainThread());
+}
+
+VsyncChild::~VsyncChild()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+}
+
+bool
+VsyncChild::SendObserve()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ if (!mObservingVsync && !mIsShutdown) {
+ mObservingVsync = true;
+ PVsyncChild::SendObserve();
+ }
+ return true;
+}
+
+bool
+VsyncChild::SendUnobserve()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ if (mObservingVsync && !mIsShutdown) {
+ mObservingVsync = false;
+ PVsyncChild::SendUnobserve();
+ }
+ return true;
+}
+
+void
+VsyncChild::ActorDestroy(ActorDestroyReason aActorDestroyReason)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(!mIsShutdown);
+ mIsShutdown = true;
+ mObserver = nullptr;
+}
+
+bool
+VsyncChild::RecvNotify(const TimeStamp& aVsyncTimestamp)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(!mIsShutdown);
+ if (mObservingVsync && mObserver) {
+ mObserver->NotifyVsync(aVsyncTimestamp);
+ }
+ return true;
+}
+
+void
+VsyncChild::SetVsyncObserver(VsyncObserver* aVsyncObserver)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ mObserver = aVsyncObserver;
+}
+
+TimeDuration
+VsyncChild::GetVsyncRate()
+{
+ if (mVsyncRate == TimeDuration::Forever()) {
+ PVsyncChild::SendRequestVsyncRate();
+ }
+
+ return mVsyncRate;
+}
+
+bool
+VsyncChild::RecvVsyncRate(const float& aVsyncRate)
+{
+ mVsyncRate = TimeDuration::FromMilliseconds(aVsyncRate);
+ return true;
+}
+
+} // namespace layout
+} // namespace mozilla