Bug 1346923 - Remove PVRManager::GetDisplays sync IPC r=daoshengmu,kanru
authorKearwood Gilbert <kgilbert@mozilla.com>
Wed, 15 Mar 2017 16:40:57 -0700
changeset 348446 65c5873eef0451b7691b99beb2010b09d6b766f9
parent 348445 56dcf92f974c3b05e3d188161a245ae63b68e900
child 348447 da54de0286592e0037360d662e5f4fc649a88a70
push id39173
push userkgilbert@mozilla.com
push dateMon, 20 Mar 2017 18:26:05 +0000
treeherderautoland@65c5873eef04 [default view] [failures only]
perfherder[talos] [build metrics] [platform microbench] (compared to previous push)
reviewersdaoshengmu, kanru
first release with
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
last release without
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
Bug 1346923 - Remove PVRManager::GetDisplays sync IPC r=daoshengmu,kanru - PVRManager::GetDisplays was a sync IPC that was part of an optimization for a use case that has been eliminated by changes to the WebVR spec. - This was an optimization for Navigator.activeVRDisplays that would allow enumeration of displays active in any content process without powering on any additional VR hardware. This will no longer be necessary as the activeVRDisplays has been restricted to returning only the displays active in the current javascript context. MozReview-Commit-ID: F6sOtM9nups
--- a/gfx/vr/ipc/PVRManager.ipdl
+++ b/gfx/vr/ipc/PVRManager.ipdl
@@ -40,20 +40,16 @@ parent:
                  TextureFlags aTextureFlags, uint64_t aSerial);
   async PVRLayer(uint32_t aDisplayID, float aLeftEyeX, float aLeftEyeY, float aLeftEyeWidth, float aLeftEyeHeight, float aRightEyeX, float aRightEyeY, float aRightEyeWidth, float aRightEyeHeight);
   // (Re)Enumerate VR Displays.  An updated list of VR displays will be returned
   // asynchronously to children via UpdateDisplayInfo.
   async RefreshDisplays();
-  // GetDisplays synchronously returns the VR displays that have already been
-  // enumerated by RefreshDisplays() but does not enumerate new ones.
-  sync GetDisplays() returns(VRDisplayInfo[] aDisplayInfo);
   // Reset the sensor of the display identified by aDisplayID so that the current
   // sensor state is the "Zero" position.
   async ResetSensor(uint32_t aDisplayID);
   sync GetSensorState(uint32_t aDisplayID) returns(VRHMDSensorState aState);
   sync SetHaveEventListener(bool aHaveEventListener);
   async ControllerListenerAdded();
--- a/gfx/vr/ipc/VRManagerChild.cpp
+++ b/gfx/vr/ipc/VRManagerChild.cpp
@@ -288,26 +288,16 @@ VRManagerChild::RecvUpdateDisplayInfo(ns
   return IPC_OK();
 VRManagerChild::GetVRDisplays(nsTArray<RefPtr<VRDisplayClient>>& aDisplays)
-  if (!mDisplaysInitialized) {
-    /**
-     * If we haven't received any asynchronous callback after requesting
-     * display enumeration with RefreshDisplays, get the existing displays
-     * that have already been enumerated by other VRManagerChild instances.
-     */
-    nsTArray<VRDisplayInfo> displays;
-    Unused << SendGetDisplays(&displays);
-    UpdateDisplayInfo(displays);
-  }
   aDisplays = mDisplays;
   return true;
 VRManagerChild::RefreshVRDisplaysWithCallback(uint64_t aWindowId)
   bool success = SendRefreshDisplays();
--- a/gfx/vr/ipc/VRManagerParent.cpp
+++ b/gfx/vr/ipc/VRManagerParent.cpp
@@ -237,24 +237,16 @@ VRManagerParent::RecvRefreshDisplays()
   // can resolve even if there are no changes to the VR Displays.
   VRManager* vm = VRManager::Get();
   return IPC_OK();
-VRManagerParent::RecvGetDisplays(nsTArray<VRDisplayInfo> *aDisplays)
-  VRManager* vm = VRManager::Get();
-  vm->GetVRDisplayInfo(*aDisplays);
-  return IPC_OK();
 VRManagerParent::RecvResetSensor(const uint32_t& aDisplayID)
   VRManager* vm = VRManager::Get();
   RefPtr<gfx::VRDisplayHost> display = vm->GetDisplay(aDisplayID);
   if (display != nullptr) {
--- a/gfx/vr/ipc/VRManagerParent.h
+++ b/gfx/vr/ipc/VRManagerParent.h
@@ -81,17 +81,16 @@ protected:
                                               const float& aRightEyeWidth,
                                               const float& aRightEyeHeight) override;
   virtual bool DeallocPVRLayerParent(PVRLayerParent* actor) override;
   virtual void ActorDestroy(ActorDestroyReason why) override;
   void OnChannelConnected(int32_t pid) override;
   virtual mozilla::ipc::IPCResult RecvRefreshDisplays() override;
-  virtual mozilla::ipc::IPCResult RecvGetDisplays(nsTArray<VRDisplayInfo> *aDisplays) override;
   virtual mozilla::ipc::IPCResult RecvResetSensor(const uint32_t& aDisplayID) override;
   virtual mozilla::ipc::IPCResult RecvGetSensorState(const uint32_t& aDisplayID, VRHMDSensorState* aState) override;
   virtual mozilla::ipc::IPCResult RecvSetHaveEventListener(const bool& aHaveEventListener) override;
   virtual mozilla::ipc::IPCResult RecvControllerListenerAdded() override;
   virtual mozilla::ipc::IPCResult RecvControllerListenerRemoved() override;
   virtual mozilla::ipc::IPCResult RecvCreateVRTestSystem() override;
   virtual mozilla::ipc::IPCResult RecvCreateVRServiceTestDisplay(const nsCString& aID, const uint32_t& aPromiseID) override;
   virtual mozilla::ipc::IPCResult RecvCreateVRServiceTestController(const nsCString& aID, const uint32_t& aPromiseID) override;
--- a/ipc/ipdl/sync-messages.ini
+++ b/ipc/ipdl/sync-messages.ini
@@ -944,18 +944,16 @@ description =
 description =
 description =
 description =
 description =
-description =
 description =
 description =
 description =
 description =