Pass active functor rendering threads to HWUI ADPF session

Test: unit tested

Bug: 329219352

Change-Id: I13e83030e5d0891584ba9d62fe6cc1eb332a7b74
diff --git a/libs/hwui/renderthread/HintSessionWrapper.h b/libs/hwui/renderthread/HintSessionWrapper.h
index 41891cd..14e7a53 100644
--- a/libs/hwui/renderthread/HintSessionWrapper.h
+++ b/libs/hwui/renderthread/HintSessionWrapper.h
@@ -20,6 +20,7 @@
 
 #include <future>
 #include <optional>
+#include <vector>
 
 #include "utils/TimeUtils.h"
 
@@ -47,11 +48,15 @@
     nsecs_t getLastUpdate();
     void delayedDestroy(renderthread::RenderThread& rt, nsecs_t delay,
                         std::shared_ptr<HintSessionWrapper> wrapperPtr);
+    // Must be called on Render thread. Otherwise can cause a race condition.
+    void setActiveFunctorThreads(std::vector<pid_t> threadIds);
 
 private:
     APerformanceHintSession* mHintSession = nullptr;
     // This needs to work concurrently for testing
     std::optional<std::shared_future<APerformanceHintSession*>> mHintSessionFuture;
+    // This needs to work concurrently for testing
+    std::optional<std::shared_future<int>> mSetThreadsFuture;
 
     int mResetsSinceLastReport = 0;
     nsecs_t mLastFrameNotification = 0;
@@ -59,6 +64,8 @@
 
     pid_t mUiThreadId;
     pid_t mRenderThreadId;
+    std::vector<pid_t> mPermanentSessionTids;
+    std::vector<pid_t> mActiveFunctorTids;
 
     bool mSessionValid = true;
 
@@ -82,6 +89,8 @@
         void (*reportActualWorkDuration)(APerformanceHintSession* session,
                                          int64_t actualDuration) = nullptr;
         void (*sendHint)(APerformanceHintSession* session, int32_t hintId) = nullptr;
+        int (*setThreads)(APerformanceHintSession* session, const pid_t* tids,
+                          size_t size) = nullptr;
 
     private:
         bool mInitialized = false;