commit 8cb2188b3b5b923f0a4ae2bdb73ea85c2ae00820
author Ady Abraham <adyabr@google.com> Wed Aug 26 18:22:05 2020 -0700
committer Ady Abraham <adyabr@google.com> Fri Aug 28 10:39:44 2020 -0700
tree 127394526414acf3b6711e23cea499adfe45e725
parent 8735eaccd72bb6880bb02d6cca398722a01cc75e

SurfaceFlinger: DispSync -> VsyncController

Refactor the old DispSync to separate between Vsync math (VsyncTracker)
and fence / vsync callback management (VsyncController)

Bug: 162888874
Test: examine systraces
Test: SF unit tests

Change-Id: Id275620380a21aeb0017e966910cbf24860cecef

services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.cpp

diff --git a/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.cpp b/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.cpp
index 2154a40..ca6ea27 100644
--- a/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.cpp
+++ b/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.cpp
@@ -185,7 +185,7 @@
         mMinVsyncDistance(minVsyncDistance) {}
 
 VSyncDispatchTimerQueue::~VSyncDispatchTimerQueue() {
-    std::lock_guard<decltype(mMutex)> lk(mMutex);
+    std::lock_guard lock(mMutex);
     cancelTimer();
 }
 
@@ -257,7 +257,7 @@
     };
     std::vector<Invocation> invocations;
     {
-        std::lock_guard<decltype(mMutex)> lk(mMutex);
+        std::lock_guard lock(mMutex);
         auto const now = mTimeKeeper->now();
         mLastTimerCallback = now;
         for (auto it = mCallbacks.begin(); it != mCallbacks.end(); it++) {
@@ -289,7 +289,7 @@
 
 VSyncDispatchTimerQueue::CallbackToken VSyncDispatchTimerQueue::registerCallback(
         Callback const& callbackFn, std::string callbackName) {
-    std::lock_guard<decltype(mMutex)> lk(mMutex);
+    std::lock_guard lock(mMutex);
     return CallbackToken{
             mCallbacks
                     .emplace(++mCallbackToken,
@@ -302,7 +302,7 @@
 void VSyncDispatchTimerQueue::unregisterCallback(CallbackToken token) {
     std::shared_ptr<VSyncDispatchTimerQueueEntry> entry = nullptr;
     {
-        std::lock_guard<decltype(mMutex)> lk(mMutex);
+        std::lock_guard lock(mMutex);
         auto it = mCallbacks.find(token);
         if (it != mCallbacks.end()) {
             entry = it->second;
@@ -319,7 +319,7 @@
                                                  ScheduleTiming scheduleTiming) {
     auto result = ScheduleResult::Error;
     {
-        std::lock_guard<decltype(mMutex)> lk(mMutex);
+        std::lock_guard lock(mMutex);
 
         auto it = mCallbacks.find(token);
         if (it == mCallbacks.end()) {
@@ -350,7 +350,7 @@
 }
 
 CancelResult VSyncDispatchTimerQueue::cancel(CallbackToken token) {
-    std::lock_guard<decltype(mMutex)> lk(mMutex);
+    std::lock_guard lock(mMutex);
 
     auto it = mCallbacks.find(token);
     if (it == mCallbacks.end()) {
@@ -372,7 +372,7 @@
 }
 
 void VSyncDispatchTimerQueue::dump(std::string& result) const {
-    std::lock_guard<decltype(mMutex)> lk(mMutex);
+    std::lock_guard lock(mMutex);
     StringAppendF(&result, "\tTimer:\n");
     mTimeKeeper->dump(result);
     StringAppendF(&result, "\tmTimerSlack: %.2fms mMinVsyncDistance: %.2fms\n", mTimerSlack / 1e6f,